0000912057-01-534640.txt : 20011010 0000912057-01-534640.hdr.sgml : 20011010 ACCESSION NUMBER: 0000912057-01-534640 CONFORMED SUBMISSION TYPE: S-8 PUBLIC DOCUMENT COUNT: 4 FILED AS OF DATE: 20011005 EFFECTIVENESS DATE: 20011005 FILER: COMPANY DATA: COMPANY CONFORMED NAME: POWER ONE INC CENTRAL INDEX KEY: 0001042825 STANDARD INDUSTRIAL CLASSIFICATION: ELECTRONIC COMPONENTS, NEC [3679] IRS NUMBER: 770420182 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: S-8 SEC ACT: 1933 Act SEC FILE NUMBER: 333-71100 FILM NUMBER: 1753580 BUSINESS ADDRESS: STREET 1: 740 CALLE PLANO CITY: CAMARILLO STATE: CA ZIP: 93012 BUSINESS PHONE: 8059878741 MAIL ADDRESS: STREET 1: 740 CALLE PLANO CITY: CAMARILLO STATE: CA ZIP: 93012 S-8 1 a2060614zs-8.htm S-8 Prepared by MERRILL CORPORATION
QuickLinks -- Click here to rapidly navigate through this document

As filed with the Securities and Exchange Commission on October 5, 2001.

Registration No. 333-      



SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549


FORM S-8

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933


Power-One, Inc.
(Exact name of registrant as specified in its charter)


Delaware   77-0420182
(State or other jurisdiction of
incorporation or organization)
  (I.R.S. Employer
Identification No.)

740 Calle Plano, Camarillo, California 93012
(805) 987-8741
(Address of principal executive offices)

Power-One 2001 Deferred Compensation Plan
(Full title of the plan)

Steven J. Goldman
Chairman and Chief Executive Officer
740 Calle Plano
Camarillo, California 93012
(Name and address of agent for service)


Telephone number, including area code, of agent for service:
(805) 987-8741


Copies to:

Steven J. Goldman   Kendall R. Bishop, Esq.
740 Calle Plano   O'Melveny & Myers LLP
Camarillo, California 93012   1999 Avenue of the Stars, Suite 700
(805) 987-8741   Los Angeles, California 90067-6035
(310) 553-6700

CALCULATION OF REGISTRATION FEE


Title of securities
to be registered

  Amount to be registered
  Proposed maximum
offering price
per share

  Proposed maximum
aggregate
offering price

  Amount of registration fee

Common Stock, par value $.001 per share   2,750,000(1) shares   $5.735(2)   $15,771,250(2)   $3,942.81(2)

(1)
This Registration Statement covers, in addition to the number of shares of common stock stated above, rights to acquire shares of common stock covered by this Prospectus and, pursuant to Rule 416(c), an indeterminate number of interests in the 2001 Deferred Compensation Plan (the "Plan") and shares which by reason of certain events specified in the Plan may become subject to the Plan.

(2)
Pursuant to Rule 457(h), the maximum offering price, per share and in the aggregate, and the registration fee were calculated based upon the average of the high and low prices of Power-One's common stock reported in The Wall Street Journal on October 2, 2001.

The exhibit index included in this Registration Statement is at page 9.





PART I

INFORMATION REQUIRED IN THE
SECTION 10(a) PROSPECTUS

    The documents containing the information specified in this Part I of Form S-8 (plan information and registrant information) will be sent or given to employees as specified by Rule 428(b)(1) of the Securities Act of 1933, as amended (the "Securities Act"). Such documents need not be filed with the Securities and Exchange Commission (the "Commission") either as part of this Registration Statement or as prospectuses or prospectus supplements pursuant to Rule 424. These documents, which include the statement of availability required by Item 2 of Form S-8, and the documents incorporated by reference in this Registration Statement pursuant to Item 3 of Form S-8 (Part II hereof), taken together, constitute a prospectus that meets the requirements of Section 10(a) of the Securities Act.

2



PART II

INFORMATION REQUIRED IN THE
REGISTRATION STATEMENT

Item 3. Incorporation of Certain Documents by Reference

    The following documents of Power-One, Inc. (the "Company") filed with the Commission are incorporated herein by reference:

        (a) The Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2000, as amended;

        (b) The Company's Quarterly Reports on Form 10-Q for the Company's fiscal quarters ended April 1, 2001 and July 1, 2001;

        (c) The descriptions of the Company's Common Stock contained in its Registration Statements on Form 8-A filed on August 19, 1997 and August 9, 2000.

    All documents subsequently filed by the Company pursuant to Sections 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act") before the filing of a post-effective amendment, which indicates that all securities offered hereby have been sold or which deregisters all securities then remaining unsold, shall be deemed to be incorporated by reference into this Registration Statement and to be a part hereof from the date of filing of such documents. Copies of these documents are not required to be filed with this Registration Statement. Any statement contained herein or in a document, all or a portion of which is incorporated or deemed to be incorporated by reference herein, shall be deemed to be modified or superseded for purposes of this Registration Statement to the extent that a statement contained herein or in any other subsequently filed document which also is or is deemed to be incorporated by reference herein modifies or supersedes such statement. Any such statement so modified or superseded shall not be deemed, except as so modified or amended, to constitute a part of this Registration Statement.

Item 4. Description of Securities

    The Company's common stock, par value $.001 per share (the "Common Stock"), is registered pursuant to Section 12 of the Exchange Act, and, therefore, the description of securities is omitted.

Item 5. Interests of Named Experts and Counsel

    Not Applicable.

Item 6. Indemnification of Directors and Officers

    Section 145 of the General Corporation Law of Delaware, the Company's state of incorporation, allows Delaware companies to provide certain indemnification rights for the benefit of their officers, directors, employees and agents. The Company's Restated Certificate of Incorporation ("Certificate") and Amended and Restated Bylaws ("Bylaws") contain indemnification provisions covering directors, employees and agents of the Company.

    The Certificate requires the Company to indemnify a person covered by the indemnification provisions ("Indemnitee") to the fullest extent permitted by applicable law. The indemnification is for expenses, liabilities and losses (including, but not limited to, attorney's fees, judgments, amounts paid in settlements, fines and penalties) (collectively, the "Expenses") reasonably incurred by an Indemnitee named or involved in a threatened, pending or completed proceeding whether civil, administrative or criminal in nature.

3


    An Indemnitee is not entitled to indemnification in the following circumstances. The first is when a proceeding is initiated by him/her without the Company's prior approval. The second is when an Indemnitee's conduct (which is the subject of the proceeding) does not meet the standard of conduct (see below) called for under the Delaware indemnification statutes. Additionally, if an Indemnitee is found liable for negligence or misconduct in the performance of his/her duty to the Company in the proceeding for which indemnification is sought, he/she may be indemnified but only if the court in which the proceeding was brought finds that the Indemnitee is entitled to indemnification of expenses (and at an amount) which the court deems appropriate.

    A majority of the Board of Directors of the Company who are not a party to the proceeding, the Company's legal counsel, if requested by the Board, or the Company's stockholders may determine whether or not an Indemnitee has met the necessary standard of conduct. An Indemnitee's standard of conduct called for by the Delaware statute on civil disputes requires that he/she acted in good faith and in a manner he/she reasonably believed to be in, or not opposed to, the best interests of the Company. The applicable standard on criminal matters requires that the Indemnitee have no reasonable cause to believe that his/her conduct was unlawful.

    The Company will reimburse Expenses incurred by an Indemnitee who is an officer or director of the Company in defending a proceeding even if it has not been finally resolved but only if the officer/director promises in writing to reimburse the Company for amounts advanced in case it is determined that the officer/director was not entitled to be indemnified by the Company. In case an indemnity claim is not paid within 30 days of written payment demand, the Company may be liable for the Indemnitee's costs of enforcing his indemnity rights.

    The indemnification provisions in the Certificate and Bylaws are not intended to and do not supersede, diminish or replace any other indemnity rights that an Indemnitee may presently have or acquire in the future due to, but not limited to, statutory changes, contract(s) entered into, action by the stockholders or the Board of Directors. Moreover, any repeal or modification of the current indemnification provisions in the Certificate or Bylaws will not diminish any indemnification rights that an Indemnitee may have had with respect to proceedings that arose before the repeal or modification of the indemnification provisions.

    In case some of the indemnification provisions in the Certificate or Bylaws are legally invalidated, the Company will continue to be obligated to indemnify an Indemnitee for Expenses for which indemnification is available under the indemnification provisions that were not legally invalidated and to the full extent permitted by applicable law.

    The Company's Certificate eliminates personal liability of directors to the Company or its stockholders for monetary damages for breach of fiduciary duty as a director, except for: (i) any breach of the duty of loyalty to the Company or its stockholders; (ii) acts or omissions not in good faith or that involve intentional misconduct or knowing violations of law; (iii) liability under Section 174 of the Delaware General Corporation Law relating to certain unlawful dividends and stock repurchases; or (iv) any transaction from which the director derived an improper personal benefit.

    The Company has entered into individual indemnification agreements with its directors, executive officers, and certain other officers. The indemnification agreements provide for indemnification to the fullest extent permitted by law and provide contractual assurance to directors and officers that indemnity and advancement of expenses will be available to them regardless of any amendment or revocation of the Company's Bylaws.

    The Bylaws permit the Company to purchase and maintain insurance on behalf of any director, officer, employee or agent of the Company against liability asserted against him or her in any such capacity, whether or not the Company would have the power to indemnify him or her against such liability under the provisions of the Bylaws.

4


Item 7. Exemption from Registration Claimed

    Not applicable.

Item 8. Exhibits

    See the attached Exhibit Index.

Item 9. Undertakings

    (a) The undersigned registrant hereby undertakes:

        (1) To file, during any period in which offers or sales are being made, a post-effective amendment to this Registration Statement:

          (i) To include any prospectus required by Section 10(a)(3) of the Securities Act;

          (ii) To reflect in the prospectus any facts or events arising after the effective date of the Registration Statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the Registration Statement; and

          (iii) To include any material information with respect to the plan of distribution not previously disclosed in the Registration Statement or any material change to such information in the Registration Statement;

          Provided, however, that paragraphs (a)(1)(i) and (a)(1)(ii) do not apply if the Registration Statement is on Form S-3, Form S-8, or Form F-3, and the information required to be included in a post-effective amendment by those paragraphs is contained in periodic reports filed with or furnished to the Commission by the registrant pursuant to Section 13 or Section 15(d) of the Exchange Act that are incorporated by reference in the Registration Statement;

        (2) That, for the purpose of determining any liability under the Securities Act, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof; and

        (3) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.

    (b) The undersigned registrant hereby undertakes that, for purposes of determining any liability under the Securities Act, each filing of the registrant's annual report pursuant to Section 13(a) or 15(d) of the Exchange Act (and, where applicable, each filing of an employee benefit plan's annual report pursuant to Section 15(d) of the Exchange Act) that is incorporated by reference in the Registration Statement shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

    (c) Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers and controlling persons of the registrant pursuant to the provisions described in Item 6 above, or otherwise, the registrant has been advised that in the opinion of the Commission such indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the registrant of expenses incurred or paid by a director, officer or controlling person of the registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities Act and will be governed by the final adjudication of such issue.

5



SIGNATURES

    The Registrant.  Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Camarillo, State of California, on October 4, 2001.

    POWER-ONE, INC.

 

 

By:

 

/s/ 
STEVEN J. GOLDMAN   
Steven J. Goldman
Chief Executive Officer


POWER OF ATTORNEY

    Each person whose signature appears below constitutes and appoints Steven J. Goldman and Eddie K. Schnopp his true and lawful attorneys-in-fact and agents, each acting alone, with full powers of substitution and resubstitution, for him and in his name, place and stead, in any and all capacities, to sign any and all amendments (including post-effective amendments) to this Registration Statement, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Commission, granting unto said attorneys-in-fact and agents, each acting alone, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, each acting alone, or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

    Pursuant to the requirements of the Securities Act, this Registration Statement has been signed below by the following persons in the capacities and on the dates indicated.

Signature
  Title
  Date

/s/ STEVEN J. GOLDMAN   
Steven J. Goldman

 

Chairman and Chief Executive Officer (principal executive officer)

 

October 4, 2001

/s/ 
EDDIE K. SCHNOPP   
Eddie K. Schnopp

 

Senior Vice President-Finance, and Chief Eddie K. Schnopp Financial Officer (principal financial and accounting officer)

 

October 4, 2001

/s/ 
JON E.M. JACOBY   
Jon E.M. Jacoby

 

Director

 

October 4, 2001

/s/ 
DR. HANSPETER BRÄNDLI   
Dr. Hanspeter Brändli

 

Director

 

October 4, 2001

6



/s/ 
JAY WALTERS   
Jay Walters

 

Director

 

October 4, 2001

/s/ 
KENDALL R. BISHOP   
Kendall R. Bishop

 

Director

 

October 4, 2001

/s/ 
MARK MELLIAR-SMITH   
Mark Melliar-Smith

 

Director

 

October 4, 2001

    The Plan.  Pursuant to the requirements of the Securities Act of 1933, the Committee has caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the city of Camarillo, state of California, on the 4th day of October, 2001.

    POWER-ONE INC. 2001 DEFERRED
COMPENSATION PLAN

Date: October 4, 2001

 

By:

 

/s/ 
JON E.M. JACOBY   
        Jon E.M. Jacoby
    Title:   On behalf of the Committee of the Power-One, Inc. 2001 Deferred Compensation Plan

7



EXHIBIT INDEX

Exhibit Number

  Description
4   2001 Deferred Compensation Plan
5   Opinion of O'Melveny & Myers LLP (opinion re legality)
23.1   Consent of Independent Auditors
23.2   Consent of O'Melveny & Myers LLP (included in Exhibit 5)
24   Power of Attorney (included in this Registration Statement under "Signatures")

8




QuickLinks

PART I INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS
PART II INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
SIGNATURES
POWER OF ATTORNEY
EXHIBIT INDEX
EX-4 3 a2060614zex-4.htm EX-4 Prepared by MERRILL CORPORATION
QuickLinks -- Click here to rapidly navigate through this document
    Exhibit 4


POWER-ONE, INC.

2001 DEFERRED COMPENSATION PLAN




POWER-ONE, INC.
2001 DEFERRED COMPENSATION PLAN

TABLE OF CONTENTS

 
   
  Page

ARTICLE I—TITLE, PURPOSE AND AUTHORIZED SHARES

 

1

ARTICLE II—DEFINITIONS

 

1
2.1    Board of Directors   1
2.2    Cause   1
2.3    Code   1
2.4    Common Stock   1
2.5    Committee   1
2.6    Company   1
2.7    Compensation   1
2.8    Deferral Period   1
2.9    Director   1
2.10   Disability   1
2.11   Effective Date   2
2.12   Eligible Director   2
2.13   Eligible Employee   2
2.14   Employee   2
2.15   Exchange Act   2
2.16   Fair Market Value   2
2.17   Participant   2
2.18   Payment Date   2
2.19   Plan   2
2.20   Salary   2
2.21   Stock Unit   2
2.22   Stock Unit Account   2

ARTICLE III—PARTICIPATION

 

3

ARTICLE IV—DEFERRAL ELECTIONS

 

3
4.1    Elections to Defer Compensation   3
4.2    Irrevocability   3

ARTICLE V—DEFERRAL ACCOUNTS

 

3
5.1    Stock Unit Account   3
5.2    Limitations on Rights Associated with Stock Units   4
5.3    Vesting and Forfeiture of Stock Units   4

i


5.4    Distribution of Benefits   5
5.4    Adjustments in Case of Changes in Common Stock   5
5.5    Company's Right to Withhold   6

ARTICLE VI—ADMINISTRATION

 

6
6.1    Rights and Duties   6
6.2    Indemnity and Liability   6

ARTICLE VII—PLAN CHANGES AND TERMINATION

 

7

ARTICLE VIII—MISCELLANEOUS

 

7
8.1    Limitation on Participants' Rights   7
8.2    Beneficiaries   7
8.3    Benefits Not Assignable; Obligations Binding Upon Successors   8
8.4    Governing Law; Severability   8
8.5    Compliance With Laws   8
8.6    Headings Not Part of Plan   8

ii



POWER-ONE, INC.
2001 DEFERRED COMPENSATION PLAN


ARTICLE I
TITLE, PURPOSE AND AUTHORIZED SHARES

    This Plan shall be known as the "Power-One, Inc. 2001 Deferred Compensation Plan." The purpose of this Plan is to motivate and retain eligible employees and non-employee directors of Power-One, Inc. by permitting them to defer compensation and affording them the opportunity to link that compensation to an equity interest in the Company. The total number of shares of Common Stock that may be delivered under this Plan is 2,750,000, subject to adjustments contemplated by Section 5.5.


ARTICLE II
DEFINITIONS

    Whenever the following terms are used in this Plan they shall have the meaning specified below unless the context clearly indicates to the contrary:

    2.1  Board of Directors shall mean the Board of Directors of the Company.

    2.2  Cause shall mean a determination by the Committee that the Participant (a) has committed a material breach of the Participant's duties and responsibilities (other than as a result of incapacity due to a Disability), (b) has been convicted of a felony, or entered a plea of guilty or nolo contendre with respect to such a crime, (c) has violated any fiduciary duty or duty of loyalty owed to the Company, (d) has been generally incompetent or grossly negligent in the discharge of the Participant's duties and responsibilities, (e) has engaged or is engaging in the immoderate use of alcoholic beverages or narcotics or other substance abuse, or (f) has violated in any material respect any of the Company's established employment policies in effect from time to time.

    2.3  Code shall mean the Internal Revenue Code of 1986, as amended.

    2.4  Common Stock shall mean the common stock of the Company.

    2.5  Committee shall mean the Compensation Committee of the Board of Directors or the Board of Directors.

    2.6  Company shall mean Power-One, Inc., a Delaware corporation, and its subsidiaries, successors and assigns.

    2.7  Compensation shall mean (1) in the case of an Eligible Employee, the Salary, at the rate in effect on the date that he or she files his or her election to participate, that the Eligible Employee will earn from the Company during the Deferral Period, and (2) in the case of an Eligible Director, the annual retainer and regular meeting fees, at the rates in effect at the beginning of the Deferral Period, that will become payable by the Company to an Eligible Director during the Deferral Period.

    2.8  Deferral Period shall mean the period beginning on the Effective Date and ending on October 20, 2002; provided, however, that in the case of any individual who first becomes an Eligible Employee after the Effective Date, the Deferral Period shall mean such lesser period of time beginning on the first day of the first pay period beginning after the deferral election is filed in accordance with Section 4.1 and ending on October 20, 2002.

    2.9  Director shall mean an individual who is a member of the Board of Directors and is not an Employee.

    2.10  Disability shall mean a "permanent and total disability" within the meaning of Section 22(e)(3) of the Code.

1


    2.11  Effective Date shall mean October 22, 2001.

    2.12  Eligible Director shall mean an individual who is a Director on the Effective Date.

    2.13  Eligible Employee shall mean a full-time salaried Employee of the Company who is employed in the United States and any full-time salaried Employee of the Company employed in such jurisdictions outside of the United States as the Committee designates.

    2.14  Employee shall mean each person who renders services to the Company with the status of an "employee" as that term is defined in Section 3121(d) of the Code.

    2.15  Exchange Act shall mean the Securities Exchange Act of 1934, as amended from time to time.

    2.16  Fair Market Value shall mean as of any date, the value of Common Stock determined as follows:

    (a)  If the Common Stock is listed on any established stock exchange or a national market system, including without limitation the Nasdaq National Market or The Nasdaq SmallCap Market of The Nasdaq Stock Market, the Fair Market Value of a share of Common Stock shall be the closing sales price for such stock (or the closing bid, if no sales were reported) as quoted on such exchange or system on the day of determination (or, if the day of determination is not a market trading day, then on the last market trading day prior to the day of determination), as reported in The Wall Street Journal or such other source as the Committee deems reliable;

    (b)  If the Common Stock is regularly quoted by a recognized securities dealer but selling prices are not reported, the Fair Market Value of a Share of Common Stock shall be the mean between the high bid and low asked prices for the Common Stock on the day of determination (or, if the day of determination is not a market trading day, then on the last market trading day prior to the day of determination), as reported in The Wall Street Journal or such other source as the Committee deems reliable; or

    (c)  In the absence of an established market for the Common Stock, the Fair Market Value shall be determined in good faith by the Committee.

    2.17  Participant shall mean any Eligible Employee or Eligible Director who elects to defer Compensation in accordance with Section 4.1.

    2.18  Payment Date shall mean the first day following the first public release of actual earnings of the Company for the fiscal year ending December 31, 2002.

    2.19  Plan shall mean the Power-One, Inc. 2001 Deferred Compensation Plan, as amended from time to time.

    2.20  Salary shall mean the Eligible Employee's base pay prior to any deferrals under this Plan or any other nonqualified deferred compensation plan maintained by the Company or any salary reduction contributions to a plan described in Section 401(k) of the Code or in Section 125 of the Code.

    2.21  Stock Unit  shall mean a non-voting unit of measurement which is deemed for bookkeeping purposes to be equivalent to one outstanding share of Common Stock of the Company solely for purposes of this Plan.

    2.22  Stock Unit Account shall mean the bookkeeping account maintained by the Company on behalf of each Participant that is credited with Stock Units in accordance with Section 5.1.

2



ARTICLE III
PARTICIPATION

    Participation in the Plan is voluntary. Each Eligible Employee and Eligible Director shall become a participant in the Plan by electing to defer his or her Compensation in accordance with Article IV.


ARTICLE IV
DEFERRAL ELECTIONS

    4.1  Elections to Defer Compensation.  

    (a)  Eligible Employee Deferrals.  Each Eligible Employee may make an irrevocable election to defer up to 50% of his or her Compensation into Stock Units by filing an election with the Company that conforms with the requirements of this Article IV, on a form provided by the Committee. The election form shall signify the portion of the Eligible Employee's Compensation that he or she elects to defer. Any such election must be filed with the Company no later than October 18, 2001 and shall become binding and irrevocable on such date. Notwithstanding the preceding sentence, an individual who first becomes an Eligible Employee after the Effective Date may elect to participate in the Plan by filing a deferral election with the Company no later than 30 days following the later of his or her employment commencement date or the date he or she becomes an Eligible Employee, which election shall be effective on the first day of the pay period beginning after such election is filed.

    (b)  Eligible Director Deferrals.  Each Eligible Director may make an irrevocable election to defer up to 100% of his or her Compensation into Stock Units by filing an election with the Company that conforms with the requirements of this Article IV, on a form provided by the Committee. The election form shall signify the portion of the Eligible Director's Compensation that he or she elects to defer. Any such election must be filed with the Company no later than October 18, 2001 and shall become binding and irrevocable on such date.

    4.2  Irrevocability.  Any election filed pursuant to this Article IV shall be irrevocable.


ARTICLE V
DEFERRAL ACCOUNTS

    5.1  Stock Unit Account.  

    (a)  Crediting of Stock Units.  The Committee shall establish and maintain a Stock Unit Account for each Participant under the Plan, which shall be a memorandum account on the books of the Company. The Committee shall credit each Participant's Stock Unit Account with a number of Stock Units based on the total amount of Compensation that the Participant has elected to defer during the Deferral Period. In the case of a Participant who commences participation in the Plan on or prior to October 31, 2001, the number of Stock Units credited to his or her Stock Unit Account shall be equal to two times the total amount of his or her Compensation to be deferred divided by the lesser of (i) $6.00 or (ii) the average of the Fair Market Value of the Company's Common Stock on each of the ten business days prior to and including the date that the Plan is adopted by the Board of Directors by Unanimous Written Consent. In the case of a Participant who commences participation in the Plan after October 31, 2001, the number of Stock Units credited to his or her Stock Unit Account shall be equal to two times the total amount of his or her Compensation to be deferred divided by the average of the Fair Market Value of the Company's Common Stock on each of the ten business days preceding the first day of the Deferral Period. Any fractional Stock Units shall be rounded up to a whole Stock Unit.

3


    (b)  Subsequent Changes in Compensation.  Amounts deferred by Participants under this Plan shall be deducted ratably from actual Salary in the case of Employees, or annual retainers and meeting fees in the case of Directors, during the Deferral Period regardless of any increases or decreases in actual Salary or the rates of the Directors' annual retainer or meeting fees. Any increases in actual Salary or retainers or meeting fees shall be paid in cash without regard to any deferral elections under this Plan.

    5.2  Limitations on Rights Associated with Stock Units.  

    The Stock Units credited to a Participant's Stock Unit Account shall be used solely as a device to determine the number of shares of Common Stock to be eventually distributed to such Participant in accordance with this Plan. The Stock Units shall not be treated as property or as a trust fund of any kind. All shares of Common Stock or other amounts attributed to the Stock Units shall be and remain the sole property of the Company, and each Participant's right in the Stock Units is limited to the right to receive shares of Common Stock in the future as herein provided. No Participant shall be entitled to any voting or other shareholder rights with respect to Stock Units granted under this Plan. The number of Stock Units credited under this Section shall be subject to adjustment in accordance with Section 5.5.

    5.3  Vesting and Forfeiture of Stock Units  

    (a)  Employees.  

        (i)  Vesting.  Except as described in paragraph (ii) below, the interest of a Participant who is an Employee in 50% of the Stock Units credited to his or her Stock Unit Account (the "First Half of the Stock Units") shall vest and become non-forfeitable ratably at the end of each pay period that the Participant remains employed during the Deferral Period. The interest of a Participant in the other 50% of the number of Stock Units credited to his or her Stock Unit Account (the "Second Half of the Stock Units") shall vest and become non-forfeitable on the Payment Date if he or she remains employed by the Company until the Payment Date; provided, however, that the Second Half of the Stock Units shall become vested to the same extent as the First Half of the Stock Units if, prior to the Payment Date, the Participant dies or incurs a Disability or the Company terminates his or her employment for a reason other than Cause.

        (ii)  Forfeiture for Unpaid Leave of Absence.  Notwithstanding anything to the contrary in paragraph (i) above, if a Participant who is an Employee takes an unpaid leave of absence during the Participant's Deferral Period, such Participant shall forfeit, and the number of Stock Units credited to the Participant's Stock Unit Account shall automatically be reduced by, the number of Stock Units that is equal to the number of Stock Units credited to the Participant's Stock Unit Account multiplied by a fraction, the numerator of which is the number of pay periods in the Participant's Deferral Period during which the Participant is on such leave, and the denominator of which is the total number of pay periods in the Participant's Deferral Period. The Stock Units forfeited under this paragraph shall be deemed to consist of equal numbers of the First Half of the Stock Units and the Second Half of the Stock Units.

    (b)  Directors.  The interest of a Participant who is a Director in 50% of the Stock Units credited to his Stock Unit Account (the "First Half of the Stock Units") shall vest and become non-forfeitable as follows: Five-seventeenths (5/17ths) of the First Half of the Stock Units shall vest ratably at the end of each month that the Participant remains in service as a Director during his or her Deferral Period and three-seventeenths (3/17ths) shall vest for each of the four regularly scheduled meetings of the Board of Directors during the Deferral Period that the Participant attends. The interest of a Participant who is a Director in the other 50% of the Stock Units credited to his Stock Unit Account (the "Second Half of the Stock Units") shall vest and become non-forfeitable on the Payment Date if he or she remains in the service of the Company until the Payment Date; provided, however, that the Second Half of the Stock Units credited to a Participant's Stock Unit Account shall become vested to the same extent as the First Half of the Stock Units if, prior to the Payment Date, the Participant dies or incurs a Disability.

4


    5.4  Distribution of Benefits.  

    (a)  Time and Manner of Distribution.  Except as provided in subsection (b) below, the Stock Units credited to a Participant's Stock Unit Account, reduced by any forfeitures under Section 5.3, shall be distributed to the Participant in a lump sum on the Payment Date.

    (b)  Effect of a Termination of Service on Distribution.  Notwithstanding subsection (a):

        (i)  Termination by Company without Cause, death or Disability.  If, prior to the Payment Date, a Participant dies or incurs a Disability, or in the case of a Participant who is an Employee, the Participant's employment is terminated by the Company for any reason other than for Cause, the Participant (or his or her Beneficiary as defined in Section 8.2) shall be entitled to a distribution of the vested Stock Units credited to his or her Stock Unit Account as of the date of his or her termination of employment. Thus, the number of Stock Units to be distributed to such a Participant who is an Employee shall be equal to the total number of Stock Units then credited to his or her Stock Unit Account multiplied by a fraction, the numerator of which is the number of pay periods from the beginning of the Participant's Deferral Period to the date of his or her termination of employment (rounded up to the nearest whole number) and the denominator of which is the total number of pay periods in his or her Deferral Period. The number of Stock Units to be distributed to a Participant who is a Director shall be equal to the total number of Stock Units then credited to his or her Stock Unit Account multiplied by a fraction, the numerator of which is the sum of (A) $5,000 multiplied by a fraction in which the numerator is the number of months that the Participant served as a member of the Board of Directors (rounded up to the nearest whole number) and the denominator is 12 plus (B) $3,000 for each regularly scheduled meeting attended by the Participant during the Deferral Period, and the denominator of which is $17,000. Such distribution shall be made within 30 days of the Participant's termination of employment. Immediately following the distribution of such vested Stock Units, all unvested Stock Units remaining credited to a Participant's Stock Unit Account shall be forfeited and the Participant shall not be entitled to any benefits with respect to such unvested Stock Units.

        (ii)  Termination by Company for Cause or Termination by Participant.  If, prior to the Payment Date, a Participant voluntarily terminates his or her employment by or services to the Company or, in the case of a Participant who is an Employee, the Company terminates the Participant's employment for Cause, then the Participant shall be entitled to a distribution of the vested portion of the Stock Units then credited to the Participant's Stock Unit Account (representing the First Half of the Stock Units). Thus, the number of Stock Units to be distributed shall be equal to the total number of the First Half of the Stock Units then credited to his or her Stock Unit Account multiplied by the applicable fraction (for an Employee or a Director) described in Section 5.3(b)(i) above. Such distribution shall be made within 30 days following the Participant's termination of employment or services. Immediately following such a distribution of vested Stock Units, all unvested Stock Units remaining credited to a Participant's Stock Unit Account shall be forfeited, and the Participant shall not be entitled to any benefits with respect to such unvested Stock Units.

    (c)  Form of Distribution.  Stock Units credited to a Participant's Stock Unit Account that become vested and are distributed shall be distributed in the form of an equivalent whole number of shares of the Company's Common Stock. Fractional shares shall be disregarded.

    5.4  Adjustments in Case of Changes in Common Stock.  If any stock dividend, stock split, reverse stock- split, re-capitalization, split-up, split-off, spin-off, liquidation or similar change in capitalization or any distribution to holders of the Company's Common Stock (other than cash dividends and cash distributions) shall occur, proportionate and equitable adjustments shall be made in the number and type of shares of Common Stock or other property reserved and of Stock Units credited under this Plan.

5


    5.5  Company's Right to Withhold.  In the sole discretion of the Committee, the Company shall satisfy any tax withholding obligation (including without limitation, any income, employment, social security or other tax imposed by any federal, state, local or foreign jurisdiction) arising upon distribution of a Participant's Stock Unit Account by either (a) requiring the Participant to pay or provide for payment in cash of the amount of any taxes that the Company may be required to withhold with respect to the benefits hereunder or (b) reducing the number of shares of Common Stock otherwise deliverable to the Participant by the appropriate number of shares, valued at their then Fair Market Value, to satisfy the minimum withholding obligation with respect to the benefits hereunder.


ARTICLE VI
ADMINISTRATION

    6.1  Rights and Duties.  Subject to the limitations of this Plan, the Committee shall be charged with the general administration of this Plan and the responsibility for carrying out its provisions, and shall have powers necessary to accomplish those purposes, including, but not by way of limitation, the following:

    (a)  To construe, interpret and administer this Plan;

    (b)  To resolve any questions concerning the amount of benefits payable to a Participant (except that no member of the Committee shall participate in a decision relating solely to his or her own benefits);

    (c)  To make all other determinations required by this Plan;

    (d)  To maintain all the necessary records for the administration of this Plan; and

    (e)  To make and publish forms, rules and procedures for elections under and for the administration of this Plan.

    The determination of the Committee made in good faith as to any disputed question or controversy and the Committee's determination of benefits payable to Participants shall be conclusive. In performing its duties, the Committee shall be entitled to rely on information, opinions, reports or statements prepared or presented by: (i) officers or employees of the Company whom the Committee believes to be reliable and competent as to such matters; and (ii) counsel (who may be employees of the Company), independent accountants and other persons as to matters which the Committee believes to be within such persons' professional or expert competence. The Committee shall be fully protected with respect to any action taken or omitted by it in good faith pursuant to the advice of such persons. The Committee may delegate ministerial, bookkeeping and other non-discretionary functions to individuals who are officers or employees of the Company.

    6.2  Indemnity and Liability.  All expenses of the Committee shall be paid by the Company and the Company shall furnish the Committee with such clerical and other assistance as is necessary in the performance of its duties. No member of the Committee shall be liable for any act or omission of any other member of the Committee nor for any act or omission on his or her own part, excepting only his or her own willful misconduct or gross negligence. To the extent permitted by law, the Company shall indemnify and save harmless each member of the Committee against any and all expenses and liabilities arising out of his or her membership on the Committee, excepting only expenses and liabilities arising out of his or her own willful misconduct or gross negligence, as determined by the Board of Directors.

6



ARTICLE VII
PLAN CHANGES AND TERMINATION

    The Board of Directors shall have the right to amend this Plan in whole or in part from time to time or may at any time suspend or terminate this Plan; provided, however, that no amendment or termination shall cancel or otherwise adversely affect in any way, without his or her written consent, any Participant's rights with respect to Stock Units credited to his or her Stock Unit Account. Any amendments authorized hereby shall be stated in an instrument in writing, and all Participants shall be bound thereby upon receipt of notice thereof.

    The Plan shall continue in effect until all matters relating to Stock Units and the accrual and distribution in respect of Compensation deferred under the Plan and the administration of the Plan has been completed and all payments hereunder have been made, at which time the Plan shall automatically terminate without further action by the Board of Directors. If the Board of Directors decides to discontinue or terminate this Plan prior to the Payment Date, it shall notify the Committee and participants in this Plan of its action in an instrument in writing, and this Plan shall be terminated at the time therein set forth, and all participants shall be bound thereby. In such event, the Stock Units then credited to a Participant's Stock Unit Account shall be distributed in accordance with Section 5.4(b)(1).


ARTICLE VIII
MISCELLANEOUS

    8.1  Limitation on Participants' Rights.  Participation in this Plan shall not give any Participant the right to be retained in the employ of the Company or continue to serve as a member of the Board, as the case may be, or any rights or interests other than as herein provided. No Participant shall have any right to any payment or benefit hereunder except to the extent provided in this Plan. This Plan shall create only a contractual obligation on the part of the Company as to such amounts and shall not be construed as creating a trust. This Plan, in and of itself, has no assets. Participants shall have only the rights of general unsecured creditors of the Company with respect to amounts credited and benefits payable, if any, on their Stock Unit Account.

    8.2  Beneficiaries.  

    (a)  Beneficiary Designation.  Upon forms provided by the Company each Participant may designate in writing the Beneficiary or Beneficiaries (as defined in Section 8.2(b)) whom such Participant desires to receive any amounts payable under this Plan after his or her death. A Participant from may from time to time change his or her designated Beneficiary or Beneficiaries without the consent of such Beneficiary or Beneficiaries by filing a new designation in writing with the Committee. However, if a married Participant wishes to designate a person other than his or her spouse as Beneficiary, such designation shall be consented to in writing by the spouse. The Participant may change any election designating a Beneficiary or Beneficiaries without any requirement of further spousal consent if the spouse's consent so provides. Notwithstanding the foregoing, spousal consent shall not be necessary if it is established that the required consent cannot be obtained because the spouse cannot be located or because of other circumstances prescribed by the Committee. The Company and the Committee may rely on the Participant's designation of a Beneficiary or Beneficiaries last filed in accordance with the terms of this Plan.

    (b)  Definition of Beneficiary.  A Participant's "Beneficiary" or "Beneficiaries" shall be the person, persons, trust or trusts so designated by the Participant or, in the absence of such designation, entitled by will or the laws of descent and distribution to receive the Participant's benefits under this Plan in the event of the Participant's death, and shall mean the Participant's executor or administrator if no other Beneficiary is identified and able to act under the circumstances.

7


    8.3  Benefits Not Assignable; Obligations Binding Upon Successors.  Benefits of a Participant under this Plan shall not be assignable or transferable and any purported transfer, assignment, pledge or other encumbrance or attachment of any payments or benefits under this Plan, or any interest therein, other than by operation of law or pursuant to Section 8.2, shall not be permitted or recognized. Obligations of the Company under this Plan shall be binding upon successors of the Company.

    8.4  Governing Law; Severability.  The validity of this Plan or any of its provisions shall be construed, administered and governed in all respects under and by the laws of the state of incorporation of the Company. If any provisions of this instrument shall be held by a court of competent jurisdiction to be invalid or unenforceable, the remaining provisions hereof shall continue to be fully effective.

    8.5  Compliance With Laws.  This Plan and the offer, issuance and delivery of shares of Common Stock through the deferral of compensation under this Plan are subject to compliance with all applicable federal and state laws, rules and regulations (including but not limited to state and federal securities law) and to such approvals by any listing, agency or any regulatory or governmental authority as may, in the opinion of counsel for the Company, be necessary or advisable in connection therewith. Any securities delivered under this Plan shall be subject to such restrictions, and the person acquiring such securities shall, if requested by the Company, provide such assurances and representations to the Company as the Company may deem necessary or desirable to assure compliance with all applicable legal requirements.

    8.6  Headings Not Part of Plan.  Headings and subheadings in this Plan are inserted for reference only and are not to be considered in the construction of the provisions hereof.

8




QuickLinks

POWER-ONE, INC. 2001 DEFERRED COMPENSATION PLAN
POWER-ONE, INC. 2001 DEFERRED COMPENSATION PLAN
TABLE OF CONTENTS
POWER-ONE, INC. 2001 DEFERRED COMPENSATION PLAN
ARTICLE I TITLE, PURPOSE AND AUTHORIZED SHARES
ARTICLE II DEFINITIONS
ARTICLE III PARTICIPATION
ARTICLE IV DEFERRAL ELECTIONS
ARTICLE V DEFERRAL ACCOUNTS
ARTICLE VI ADMINISTRATION
ARTICLE VII PLAN CHANGES AND TERMINATION
ARTICLE VIII MISCELLANEOUS
EX-5 4 a2060614zex-5.htm EX-5 Prepared by MERRILL CORPORATION

Exhibit 5

    O


O'MELVENY & MYERS LLP

LOS ANGELES   1999 Avenue of the Stars, Seventh Floor   TYSONS CORNER

IRVINE SPECTRUM

 

Los Angeles, California 90067-6035

 

WASHINGTON, D.C.

MENLO PARK

 

TELEPHONE (310) 553-6700

 

HONG KONG
NEWPORT BEACH   FACSIMILE (310) 246-6779   LONDON
NEW YORK   INTERNET: www.omm.com   SHANGHAI
SAN FRANCISCO       TOKYO

October 5, 2001

 

 

 

OUR FILE NUMBER
681,331-999

VIA EDGAR


Power-One, Inc.
740 Calle Plano
Camarillo, California 93012

Ladies and Gentlemen:

    We have acted as special counsel to Power-One, Inc., a Delaware corporation (the "Company") in connection with the preparation and filing by the Company with the Securities and Exchange Commission of a Registration Statement on Form S-8 (the "Registration Statement") under the Securities Act of 1933, as amended, with respect to 2,750,000 shares of Common Stock of the Company, par value $0.001 per share, and additional rights (together with the Common Stock, the "Shares") to be issued pursuant to the Company's 2001 Deferred Compensation Plan (the "Plan").

    We have examined originals or copies of those corporate and other records and documents we considered appropriate. We have assumed the genuineness of all signatures, the authenticity of all documents submitted to us as originals and the conformity with originals of all documents submitted to us as copies.

    On the basis of such examination, our reliance upon the assumptions in this opinion and our consideration of those questions of law we considered relevant, and subject to the limitations and qualifications in this opinion, we are of the opinion that the Shares have been duly authorized by all necessary corporate action on the part of the Company, and when issued in accordance with such authorization and in accordance with the terms of the Plan, and the countersigning of any certificates representing the Shares by a duly authorized signatory of the registrar for the Company's Common Stock, or the book-entry of the Shares by the transfer agent for the Company's Common Stock in the name of The Depository Trust Company, or its nominee, the Shares will be validly issued, fully paid and non-assessable.

    The law covered by this opinion is limited to the General Corporate Law of the State of Delaware. We express no opinion as to the laws of any other jurisdiction and no opinion regarding the statutes, administrative decisions, rules, regulations or requirements of any county, municipality, subdivision or local authority of any jurisdiction.

    We consent to your filing this opinion as an exhibit to the Registration Statement.

    This opinion is expressly limited to the matters set forth above and we render no opinion, whether by implication or otherwise, as to any other matters. We assume no obligation to update or supplement this opinion to reflect any facts or circumstances that arise after the date of this opinion and come to our attention, or any future changes in law.

                        Respectfully submitted,

                        /s/ O'MELVENY & MYERS LLP



EX-23.1 5 a2060614zex-23_1.htm EX-23.1 Prepared by MERRILL CORPORATION
QuickLinks -- Click here to rapidly navigate through this document

Exhibit 23.1

[Deloitte & Touche LLP Letterhead]


INDEPENDENT AUDITORS' CONSENT

    We consent to the incorporation by reference in this Registration Statement of Power-One, Inc. on Form S-8 of our report dated January 19, 2001, appearing in the Annual Report on Form 10-K of Power-One, Inc. for the year ended December 31, 2000.

/s/ Deloitte & Touche LLP

Los Angeles, California
October 2, 2001




QuickLinks

INDEPENDENT AUDITORS' CONSENT