LY type varistor has advantages of large discharge current capacity, wide voltage range, quick response, strong surge suppression, easy installation and replacement and so on. lt is widely used in switching overvoltage protection and atmospheric overvoltage protection for railway automatic signal, traffic control center, communication relay station, low-voltage distribution, semiconductor device and all kinds of electric apparatuses.1.Wide voltage range 47V-1200V 2.High nonlinear coefficient 3.Large discharge current capacity

Model	Varistor voltage	Max allowable loop voltage		Max clamping voltage	Energy tolerance	Max peak current		Capacitance    (reference value)
						1time	2time
	V(V)	Acrms	DC	V150A(V)	(J)	(A)	(A)	pF
LYA25D341	430(387-473)	275	350	710	220	15000	10000	1250
LYA25D471	470(423-517)	300	385	775	250	15000	10000	1100
LYA25D511	510(459-561)	320	415	845	270	15000	10000	1000
LYA25D561	560(504-616)	350	455	925	270	15000	10000	950
LYA25D621	620(538-682)	385	505	1025	270	15000	10000	900
LYA25D681	680(612-748)	420	560	1120	270	15000	10000	850
LYA25D751	750(675-825)	460	615	1240	300	15000	10000	800
LYA25D781	780(702-858)	485	640	1280	300	15000	10000	750
LYA25D821	820(738-902)	510	670	1355	325	15000	10000	720
LYA25D911	910(819-1001)	550	745	1500	360	15000	10000	680
LYA25D102	1000(900-1100)	625	825	1650	400	15000	10000	650
LYA25D112	1100(990-1210)	680	895	1815	440	15000	10000	600

 

Model	Varistor voltage	Max allowable loop voltage		Max clamping voltage	Energy tolerance	Max peak current		Capacitance    (reference value)
						1time	2time
	V(V)	Acrms	DC	V150A(V)	(J)	(A)	(A)	pF
LYA25S341	430(387-473)	275	350	710	360	25000	20000	4200
LYA25S471	470(423-517)	300	385	775	360	25000	20000	3800
LYA25S511	510(459-561)	320	415	845	390	25000	20000	3500
LYA25S561	560(504-616)	350	455	925	390	25000	20000	3150
LYA25S621	620(538-682)	385	505	1025	390	25000	20000	2800
LYA25S681	680(612-748)	420	560	1120	400	25000	20000	2500
LYA25S751	750(675-825)	460	615	1240	440	25000	20000	2100
LYA25S781	780(702-858)	485	640	1280	440	25000	20000	1800
LYA25S821	820(738-902)	510	670	1355	500	25000	20000	1500
LYA25S911	910(819-1001)	550	745	1500	550	25000	20000	1100
LYA25S102	1000(900-1100)	625	825	1650	600	25000	20000	900
LYA25S112	1100(990-1210)	680	895	1815	650	25000	20000	850

1.Protection of semiconductor devices 2.Household electric surge and overvoltage protection 3.Surge protection of communication, measurement and control instruments 4.Switching overvoltage protection of solenoid valves and relays

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LY type varistor	Series: A, B,C	Dia.of chip	Product category	Varistor voltage: the first two digits indicates the value of varistor voltage, the next digit show the number of effective zero