53D Series Metal Oxide Varistors

The body of varistor is a matrix structure composed of zinc oxide particles. The grain boundaries between particles are similar to the electrical characteristics of bidirectional PN junctions. When the voltage is low, these grain boundaries are in the high impedance state, and when the voltage is high, they will be in the breakdown state, which is a kind of non-linear device.

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Data sheet:
53DSerise -.pdf

Application

Communication base station power supply
Railway signal power supply
Low voltage distribution equipment, control equipment, etc. below 1000V
Building distribution
Electric welder

Dimension

Product shape	Series	Varistor voltage	T max
	53D	201-271	7.5
		301-621	9.5
		681-911	11.2
		102-122	12.8
		142-182	16

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Automotive System

Industrial Instrumentation

USB Interface

Part NO	Varistor Voltage		Maximum allowable voltage		Maximum Limited Voltage	Withstanding Surge current（8/20μs）times		Rated Wattage	Energy（2ms）
	0.1mA		AC	DC	500A	I max	In	（W）	J
	(V)		(V)		(V)	(A)		（W）	J
53D201K	200	185-225	130	170	340	70	30	1.6	330
53D221K	220	198-242	140	180	360	70	30	1.6	355
53D241K	240	216-264	150	200	395	70	30	1.6	380
53D271K	270	243-297	175	225	455	70	30	1.6	430
53D301K	300	270-330	190	250	500	70	30	1.6	455
53D331K	330	297-363	210	275	550	70	30	1.6	480
53D361K	360	324-396	230	300	595	70	30	1.6	510
53D391K	390	351-429	250	320	650	70	30	1.6	550
53D431K	430	387-473	275	350	710	70	30	1.6	635
53D471K	470	423-517	300	385	775	70	30	1.6	640
53D511K	510	459-561	320	415	845	70	30	1.6	640
53D561K	560	504-616	350	460	925	70	30	1.6	645
53D621K	620	558-682	385	505	1025	70	30	1.6	655
53D681K	680	612-748	420	560	1120	70	30	1.6	710
53D751K	750	675-825	460	615	1240	70	30	1.6	790
53D781K	780	702-858	485	640	1290	70	30	1.6	820
53D821K	820	738-902	510	670	1355	70	30	1.6	860
53D911K	910	819-1001	550	745	1500	70	30	1.6	950
53D102K	1000	900-1100	625	825	1650	70	30	1.6	990
53D122K	1200	1080-1320	750	980	1980	70	30	1.6	1015
53D152K	1500	1350-1650	900	1220	2475	70	30	1.6	1140
53D182K	1800	1620-1980	1000	1465	2970	70	30	1.6	1370

Part NO	Varistor Voltage		Maximum allowable voltage		Maximum Limited Voltage	Withstanding Surge current（8/20μs）times		Rated Wattage	Energy（2ms）
	0.1mA		AC	DC	500A	I max	In	（W）	J
	(V)		(V)		(V)	(A)		（W）	J
53D201K	200	185-225	130	170	340	70	30	1.6	330
53D221K	220	198-242	140	180	360	70	30	1.6	355
53D241K	240	216-264	150	200	395	70	30	1.6	380
53D271K	270	243-297	175	225	455	70	30	1.6	430
53D301K	300	270-330	190	250	500	70	30	1.6	455
53D331K	330	297-363	210	275	550	70	30	1.6	480
53D361K	360	324-396	230	300	595	70	30	1.6	510
53D391K	390	351-429	250	320	650	70	30	1.6	550
53D431K	430	387-473	275	350	710	70	30	1.6	635
53D471K	470	423-517	300	385	775	70	30	1.6	640
53D511K	510	459-561	320	415	845	70	30	1.6	640
53D561K	560	504-616	350	460	925	70	30	1.6	645
53D621K	620	558-682	385	505	1025	70	30	1.6	655
53D681K	680	612-748	420	560	1120	70	30	1.6	710
53D751K	750	675-825	460	615	1240	70	30	1.6	790
53D781K	780	702-858	485	640	1290	70	30	1.6	820
53D821K	820	738-902	510	670	1355	70	30	1.6	860
53D911K	910	819-1001	550	745	1500	70	30	1.6	950
53D102K	1000	900-1100	625	825	1650	70	30	1.6	990
53D122K	1200	1080-1320	750	980	1980	70	30	1.6	1015
53D152K	1500	1350-1650	900	1220	2475	70	30	1.6	1140
53D182K	1800	1620-1980	1000	1465	2970	70	30	1.6	1370

53D Series Metal Oxide Varistors

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