Fast Response 10D 561k Metal Oxide Varistor Low Clamping Ratio And No Following-On Current

Metal oxide varistors are key protection devices for power and electronic systems, which directly determine the safety and reliability of system operation. This book systematically introduces the basic research, preparation process, performance regulation and application progress of zinc oxide and other varistors, including conduction and aging mechanism, microstructure electrical characteristics, microstructure testing and microstructure simulation analysis, research progress of high-gradient low residual voltage oxide varistors, titanium oxide, tin oxide and other system varistors, and establishes the correlation between microstructure characteristics and macroscopic characteristics of varistors relationship
Electrical properties
A piezoresistor remains non-conductive during normal operation. As a parallel mode device, varistors are commonly used to suppress line voltage surges when the voltage across the varistor is well below its "clamping voltage". There are two reasons for the failure of varistors.
As a result of unsuccessful attempts to limit very large surges caused by events such as lightning strikes, catastrophic failures occur in which the energy involved is many orders of magnitude higher than the varistor can handle. The subsequent currents generated by the impact may melt, burn or even vaporize the varistor. This thermal runaway is due to a lack of uniformity at individual grain boundary junctions, which causes the dominant current path to fail under thermal stress when the energy (usually measured in joules) of the transient pulse is too high (i.e., significantly above the "absolute maximum rating" manufacturer). The potential for catastrophic failure can be reduced by over-rating or by using specially selected MOVs in parallel.

Specifications:

Part Number	Vac(V)	Vdc(V)	V1mA(V)	Ip(A)	Vc(V)	I(A)Standard	I(A)High Surge	(J)Standard	(J)High Surge	Rated power(W)	C@1KHz(pf)
10D180K(J)	11	14	18(15-21.6)	5	36	500	1000	2.1	3.0	0.05	5600
10D220K(J)	14	18	22(19.5-26)	5	43	500	1000	2.5	5.0	0.05	4500
10D270K(J)	17	22	27(14-31)	5	53	500	1000	3.0	6.0	0.05	3700
10D330K(J)	20	26	33(29.5-36.5)	5	65	500	1000	4.0	7.0	0.05	3000
10D390K(J)	25	31	39(35-43)	5	77	500	1000	4.6	9.0	0.05	2400
10D470K(J)	30	38	47(42-52)	5	93	500	1000	5.5	11	0.05	2100
10D560K(J)	35	45	56(50-62)	5	110	500	1000	7.0	13	0.05	1800
10D680K(J)	40	56	68(61-75)	5	135	500	1000	8.2	15	0.05	1500
10D820K(J)	50	65	82(74-90)	25	135	2500	3500	12	17	0.4	1200
10D101K(J)	60	85	100(90-110)	25	165	2500	3500	15	18	0.4	1000
10D121K(J)	75	100	120(108-132)	25	200	2500	3500	18	21	0.4	830
10D151K(J)	95	125	150(135-165)	25	250	2500	3500	22	25	0.4	670
10D181K(J)	115	150	180(162-198)	25	300	2500	3500	27	30	0.4	560
10D201K(J)	130	170	200(180-220)	25	340	2500	3500	30	35	0.4	500
10D221K(J)	140	180	220(198-242)	25	360	2500	3500	32	39	0.4	450
10D241K(J)	150	200	240(216-264)	25	395	2500	3500	35	42	0.4	420
10D271K(J)	175	225	270(243-297)	25	455	2500	3500	37	49	0.4	370
10D301K(J)	190	250	300(270-330)	25	500	2500	3500	40	54	0.4	330
10D331K(J)	210	275	330(297-363)	25	550	2500	3500	43	58	0.4	300
10D361K(J)	230	300	360(324-396)	25	595	2500	3500	47	65	0.4	280
10D391K(J)	250	320	390(351-429)	25	650	2500	3500	60	70	0.4	260
10D431K(J)	275	350	430(387-473)	25	710	2500	3500	65	80	0.4	230
10D471K(J)	300	385	470(423-517)	25	775	2500	3500	67	85	0.4	210
10D511K(J)	320	415	510(459-561)	25	845	2500	3500	69	90	0.4	200
10D561K(J)	350	460	560(504-616)	25	925	2500	3500	70	92	0.4	180
10D621K(J)	385	505	620(558-682)	25	1025	2500	3500	72	95	0.4	160
10D681K(J)	420	560	680(612-748)	25	1120	2500	3500	75	98	0.4	150
10D751K(J)	460	615	750(675-825)	25	1240	2500	3500	77	100	0.4	130
10D781K(J)	485	640	780(702-858)	25	1290	2500	3500	80	105	0.4	130
10D821K(J)	510	670	820(738-902)	25	1355	2500	3500	85	110	0.4	120
10D911K(J)	550	745	910(819-1001)	25	1500	2500	3500	93	130	0.4	110
10D102K(J)	625	825	1000(900-1100)	25	1650	2500	3500	102	140	0.4	100
10D112K(J)	680	895	1100(990-1210)	25	1815	2500	3500	115	155	0.4	90

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