Ly Varistor Surge Protection Device
Ly Varistor Surge Protection Device
Product overview
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.
Features
1.Wide voltage range 47V-1200V
2.High nonlinear coefficient
3.Large discharge current capacity
Main applications
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
Model and connotation
| ↓ | ↓ | ↓ | ↓ | ↓ |
|
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 |
Specifications
|
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 |
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