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SIGNIFICANT CUSTOMERS AND EXPORT SALES (Tables)
12 Months Ended
Dec. 31, 2011
Risks and Uncertainties [Abstract]  
Customers accounted for 10% or more of total net revenues [Table Text Block]

The following customers each accounted for 10% or more of total net revenues:
 
Year Ended December 31,
Customer
2011
 
2010
 
2009
Avnet

19
%
 
17
%
 
15
%
ATM Electronic Corporation

13
%
 
11
%
 
10
%
Customers representing 10% or more of accounts receivable [Table Text Block]
The following customers each represented 10% or more of accounts receivable:
 
Customer
December 31,
2011
 
December 31,
2010
Avnet
36
%
 
21
%
ATM Electronic Corporation
10
%
 
*

 _______________
*less than 10%
International sales [Table Text Block]
The revenue percentages are comprised of the following:
 
Year Ended December 31,
 
2011
 
2010
 
2009
Hong Kong/China
39
%
 
33
%
 
26
%
Taiwan
21
%
 
23
%
 
30
%
Korea
16
%
 
20
%
 
22
%
Western Europe (excluding Germany)
10
%
 
8
%
 
8
%
Japan
6
%
 
6
%
 
4
%
Singapore
2
%
 
2
%
 
2
%
Germany
1
%
 
2
%
 
2
%
Other
1
%
 
1
%
 
1
%
Total foreign revenue
96
%
 
95
%
 
95
%
    
Revenue mix by product family [Table Text Block]
Revenue mix by product family for the years ended December 31, 2011, 2010 and 2009 was as follows:
 
 
Years Ended December 31,
Product Family
2011
 
2010
 
2009
LinkSwitch
42
%
 
37
%
 
33
%
TinySwitch
33
%
 
38
%
 
43
%
TOPSwitch
23
%
 
24
%
 
23
%
Other
2
%
 
1
%
 
1
%

Revenue mix by end markets served [Table Text Block]
Revenue mix by end markets served is comprised of the following:
 
Year Ended December 31,
End Market
2011
 
2010
 
2009
Consumer
38
%
 
38
%
 
35
%
Communications
28
%
 
31
%
 
34
%
Industrial electronics
22
%
 
19
%
 
17
%
Computer
12
%
 
12
%
 
14
%