Document And Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 28, 2024	Feb. 17, 2025
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 28, 2024
Document Transition Report	false
Entity File Number	0-16088
Entity Registrant Name	CPS TECHNOLOGIES CORP.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	04-2832509
Entity Address, Address Line One	111 South Worcester Street
Entity Address, City or Town	Norton
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	02766-2102
City Area Code	508
Local Phone Number	222-0614
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	CPSH
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float	$ 21
Entity Common Stock, Shares Outstanding (in shares)		14,525,960
Auditor Name	PKF O’Connor Davies, LLP
Auditor Location	Boston, Massachusetts
Auditor Firm ID	127
Entity Central Index Key	0000814676
Current Fiscal Year End Date	--12-28
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Amendment Flag	false