Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jul. 04, 2020	Jul. 03, 2021	Jul. 04, 2020
Segment Reporting Information [Line Items]
Net revenues	$ 819,120	$ 581,717	$ 1,583,752	$ 1,194,558
Gross profit	229,272	130,670	432,221	277,910
Restructuring and severance Costs	0	(743)	0	(743)
Unallocated Selling, General, and Administrative Expenses	(103,900)	(89,127)	(209,585)	(188,959)
Operating income	125,372	40,800	222,636	88,208
Unallocated Other Income (Expense)	(8,192)	(11,060)	(18,299)	(22,334)
Consolidated Income Before Taxes	117,180	29,740	204,337	65,874
Distributors [Member]
Segment Reporting Information [Line Items]
Net revenues	492,809	349,562	916,934	655,008
OEMs [Member]
Segment Reporting Information [Line Items]
Net revenues	277,418	190,799	572,055	451,928
EMS Companies [Member]
Segment Reporting Information [Line Items]
Net revenues	48,893	41,356	94,763	87,622
Industrial [Member]
Segment Reporting Information [Line Items]
Net revenues	322,133	226,877	592,934	441,988
Automotive [Member]
Segment Reporting Information [Line Items]
Net revenues	247,029	133,834	503,002	335,777
Telecommunications [Member]
Segment Reporting Information [Line Items]
Net revenues	22,956	33,496	47,858	63,188
Computing [Member]
Segment Reporting Information [Line Items]
Net revenues	64,632	55,719	124,531	100,942
Consumer Products [Member]
Segment Reporting Information [Line Items]
Net revenues	43,609	22,571	84,404	43,124
Power Supplies [Member]
Segment Reporting Information [Line Items]
Net revenues	42,045	32,176	77,291	57,370
Military and Aerospace [Member]
Segment Reporting Information [Line Items]
Net revenues	43,173	41,451	84,711	85,386
Medical [Member]
Segment Reporting Information [Line Items]
Net revenues	33,543	35,593	69,021	66,783
Asia [Member]
Segment Reporting Information [Line Items]
Net revenues	347,343	260,625	669,803	477,709
Europe [Member]
Segment Reporting Information [Line Items]
Net revenues	268,828	179,928	537,151	412,980
Americas [Member]
Segment Reporting Information [Line Items]
Net revenues	202,949	141,164	376,798	303,869
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	195,077	100,557	363,844	215,458
Operating Segments [Member] | MOSFETS [Member]
Segment Reporting Information [Line Items]
Net revenues	167,937	118,944	321,160	235,837
Gross profit	47,434	26,978	84,542	55,130
Operating income	37,510	17,602	64,717	36,260
Operating Segments [Member] | Diodes [Member]
Segment Reporting Information [Line Items]
Net revenues	174,815	124,187	331,993	239,530
Gross profit	41,757	24,904	76,173	44,422
Operating income	36,120	19,814	64,941	34,236
Operating Segments [Member] | Optoelectronic Components [Member]
Segment Reporting Information [Line Items]
Net revenues	75,795	49,130	153,566	103,309
Gross profit	24,522	11,728	50,148	26,313
Operating income	20,152	7,948	41,362	18,634
Operating Segments [Member] | Resistors [Member]
Segment Reporting Information [Line Items]
Net revenues	194,722	140,412	381,324	299,620
Gross profit	57,929	32,513	111,902	77,286
Operating income	51,365	27,879	98,741	66,764
Operating Segments [Member] | Inductors [Member]
Segment Reporting Information [Line Items]
Net revenues	85,539	65,185	168,997	138,970
Gross profit	28,680	20,252	56,431	43,239
Operating income	26,244	17,713	51,534	38,023
Operating Segments [Member] | Capacitors [Member]
Segment Reporting Information [Line Items]
Net revenues	120,312	83,859	226,712	177,292
Gross profit	28,950	15,218	53,025	35,573
Operating income	23,686	10,524	42,549	25,594
Operating Segments [Member] | Corporate Other [Member]
Segment Reporting Information [Line Items]
Net revenues	0	0	0	0
Gross profit	0	(923)	0	(4,053)
Operating income	0	(923)	0	(4,053)
Unallocated Amount to Segment [Member]
Segment Reporting Information [Line Items]
Restructuring and severance Costs	0	(743)	0	(743)
Impact of COVID-19 Pandemic on Selling, General, and Administrative Expenses	0	747	0	430
Unallocated Selling, General, and Administrative Expenses	(69,705)	(59,761)	(141,208)	(126,937)
Unallocated Other Income (Expense)	$ (8,192)	$ (11,060)	$ (18,299)	$ (22,334)