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Varistor_20D471K

发布时间:2021-09-09 10:31:36人气:

Functions of varistor products

      Piezoresistive characteristics is to be added on it when the voltage is lower than its threshold "UN", current flow through the tiny, equivalent to a closing valves, when the voltage is more than the UN, its resistance decreases, which makes the flow through the current surge in, little change and the impact on the rest of the circuit, so as to reduce the influence of overvoltage is sensitive to subsequent circuit. By using this function, the abnormal overvoltage which often occurs in the circuit can be suppressed and the circuit can be protected from the damage of overvoltage.


Advantages of varistor products:

●  Fast reaction time, low leakage current

●   Superior voltage ratio

●   High efficiency surge current processing ability

●   Stable performance of restraining voltage characteristics

●  The allowable deviation of voltage sensitive voltage is K±10%, L±15%, M±20%

Varistor products application range

●  Protect IC, diode, screen mask semiconductor and other semiconductor electronic components

●  Surge absorption of relays and solenoid valves  

●  Surge protection for communication measurement and electronic control


Product parameters of varistor

Part.NoVaristor voltage

Maximum
 allowable voltage

Maximum limiting voltage

Maximum
 peak current

Static
power

EnergyTypical capacitance
V1mA
(V)
ACDCV100A1 Time2 Times(W)(10/1000μs)(J)1kHz
(PF)
(V)(V)(V)(8/20μs)(8/20μs)
(A)(A)
20D180K18(16-20)111438200010000.29.439,000 
20D220K22(20-24)141843200010000.210.832,000 
20D270K27(24-30)172253200010000.213.822,000 
20D330K33(30-36)202665200010000.217.518,000 
20D390K39(35-43)253177200010000.218.616,000 
20D470K47(42-52)303893200010000.223.5 14,000 
20D560K56(50-62)3545110200010000.227.0 12,000 
20D680K68(61-75)4056135200010000.243.210,000 
20D820K82(74-90)5065135650040001.0 44 5,800 
20D101K100(90-110)6085165650040001.0 56 4,800 
20D121K120(108-132)75100200650040001.0 64 3,800 
20D151K150(135-165)95125250650040001.0 88 3,000 
20D181K180(162-198)115150300650040001.0 104 2600
20D201K200(185-225)130170340650040001.0 114 2400
20D221K220(198-242)140180360650040001.0 124 1800
20D241K240(216-264)150200395650040001.0 134 1500
20D271K270(247-303)175225455650040001.0 155 1400
20D301K300(270-330)195250505650040001.0 168 1350
20D331K330(297-363)210275550650040001.0 184 1300
20D361K360(324-396)230300595650040001.0 208 1250
20D391K390(351-429)250320650650040001.0 240 1180
20D431K430(387-473)275350710650040001.0 264 1100
20D471K470(423-517)300385775650040001.0 280 1050
20D511K510(459-561)320418842650040001.0 296 1000
20D561K560(504-616)350460920650040001.0 312 970
20D621K620(558-682)3855051,025 650040001.0 328 950
20D681K680(612-748)4205601,120 650040001.0 344 900
20D751K750(675-825)4606151,240 650040001.0 360 850
20D781K780(702-858)4856401,290 650040001.0 368 750
20D821K820(738-902)5106701,355 650040001.0 376 700
20D911K910(819-1001)5507451,500 650040001.0 408 600
20D102K1000(900-1100)6258251,650 650040001.0 448 500
20D112K1100(990-1210)6808951,815 650040001.0 496 450
20D182K1800(1620-1980)100014652,970 650040001.0 682 220
The clamping voltage  from 180K to 680K is  tested with current 25A




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