Schedule II - Valuation And Qualifying Accounts

12 Months Ended

Jan. 29, 2012

Schedule II - Valuation And Qualifying Accounts [Abstract]

Schedule II - Valuation And Qualifying Accounts

SCHEDULE II

SEMTECH CORPORATION AND SUBSIDIARIES

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS

THREE YEARS ENDED JANUARY 29, 2012

	Balance at Beginning of Year		Charged (Reversal) to Costs and Expenses		Deductions			Balance at End of Year
Year ended January 31, 2010
Allowance for doubtful accounts	$	843,000	$	459,000	$	—		$	1,302,000
Year ended January 30, 2011
Allowance for doubtful accounts	$	1,302,000	$	53,924	$	(247,703	)	$	1,108,221
Year ended January 29, 2012
Allowance for doubtful accounts	$	1,108,221	$	332,154	$	(887,500	)	$	552,875