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MYL3 lightning protection varistor series
The varistor is a voltage-limiting protection device. Utilizing the nonlinear characteristics of the varistor, when overvoltage occurs between the two poles of the varistor, the varistor can clamp the voltage to a relatively fixed voltage value, thereby protecting the subsequent circuit. The main parameters of the varistor are: varistor voltage, current capacity, junction capacitance, response time, etc.
- Commodity name： MYL3 lightning protection varistor series
- 产品描述
- 产品规格及参数
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The varistor is a voltage-limiting protection device. Utilizing the nonlinear characteristics of the varistor, when overvoltage occurs between the two poles of the varistor, the varistor can clamp the voltage to a relatively fixed voltage value, thereby protecting the subsequent circuit. The main parameters of the varistor are: varistor voltage, current capacity, junction capacitance, response time, etc.
The response time of the varistor is ns level, which is faster than the air discharge tube and slightly slower than the TVS tube. Generally, its response speed can meet the requirements for over-voltage protection of electronic circuits. The junction capacitance of a varistor is generally in the order of hundreds to thousands of Pf. In many cases, it is not suitable to be directly used in the protection of high-frequency signal lines. When used in the protection of AC circuits, its large junction capacitance will increase leakage. Current needs to be fully considered when designing protective circuits. The flow capacity of the varistor is larger, but smaller than that of the gas discharge tube.
The biggest feature of the varistor is that when the voltage applied to it is lower than its threshold "UN", the current flowing through it is extremely small, equivalent to a closed valve. When the voltage exceeds UN, its The resistance becomes smaller, which causes the current flowing through it to surge without much change in the impact on other circuits, thereby reducing the impact of overvoltage on subsequent sensitive circuits. Using this function, abnormal overvoltage that often occurs in the circuit can be suppressed and the circuit can be protected from overvoltage damage.
Product type description:
MYL3 type varistor has the characteristics of large current capacity, wide voltage range, short response time, good surge suppression, and easy installation and replacement. Therefore, it is widely used in railway automatic signals, traffic control centers, communication relay stations, low-voltage power distribution, semiconductor devices and various electrical equipment operating over-voltage protection and atmospheric over-voltage protection.
1. Characteristics
●Wide voltage range (47V～1200V)
● Large nonlinear coefficient
● Large flow capacity
● Fast response time (≤20ns)
2. Main uses
● Semiconductor device protection
● Surge overvoltage protection for household appliances
● Surge overvoltage protection for communication, measurement and control instruments
● Overvoltage protection for solenoid valve and relay operation 3. Model name, appearance, structure and dimensions:
Note: ①The maximum peak current (8/20us wave) of MYL3B and MYL3C products is (10-20)KV
Product dimensions: (mm)
Specification
Overall dimensions (mm)W1±2 W2±2 W3±2 H±1 Dmax d±1 mx
25D 48 34 twenty two 42 15 4.5 M4
34S 62 51 twenty four 56 15 4.5 M4
40D 62 51 twenty four 56 15 4.5 M4
60D 100 86 40 100 twenty four 7 M6 
4. Main technical parameters:
modelMaximum continuous operating voltageVaristor voltageMaximum limit
voltageFlow capacity (8/20u s)Maximum energy
(J)capacitanceAC(V)DC(V)V1mAVp(V)lp(A)1 time(A)2 times (A)2ms1KH Z (pF)MYL3 □ 25D201K 130 170 200(180-220) 340 150 15000 10000 100 3200 MYL3□25D221K 140 180 220(198-242) 360 150 15000 10000 120 3100 MYL3□25D241K 150 200 240(216-264) 395 150 15000 10000 130 3000 MYL3□25D271K 175 225 270(243-297) 455 150 15000 10000 160 2800 MYL3□25D301K 190 245 300(270-330) 495 150 15000 10000 160 2500 MYL3□25D331K 215 275 330(297-363) 540 150 15000 10000 160 2100 MYL3□25D361K 230 300 360(324-396) 595 150 15000 10000 180 1850 MYL3□25D391K 250 320 390(351-429) 650 150 15000 10000 200 1500 MYL3□25D431K 275 350 430(387-473) 710 150 15000 10000 220 1250 MYL3□25D471K 300 385 470(423-517) 775 150 15000 10000 250 1100 MYL3□25D511K 320 415 510(459-561) 855 150 15000 10000 270 1000 MYL3□25D561K 350 455 560(504-616) 945 150 15000 10000 270 950 MYL3□25D621K 380 505 620(558-682) 1025 150 15000 10000 270 900 MYL3□25D681K 420 560 680(612-748) 1120 150 15000 10000 270 850 MYL3□25D751K 460 615 750(675-825) 1240 150 15000 10000 300 800 MYL3□25D821K 510 670 820(738-902) 1355 150 15000 10000 300 750 MYL3□25D911K 550 745 910(819-1001) 1500 150 15000 10000 325 720 MYL3□25D102K 625 825 1000(900-1100) 1650 150 15000 10000 360 680 MYL3□25D112K 680 895 1100(990-1210) 1815 150 15000 10000 400 650 MYL3□25D122K 705 970 1200(1080-1320) 1980 150 15000 10000 440 600 MYL3□34S201K 130 170 200(185-225) 340 200 25000 20000 270 6900 MYL3□34S221K 140 180 220(198-242) 360 200 25000 20000 270 6300 MYL3□34S241K 150 200 240(216-264) 395 200 25000 20000 300 5400 MYL3□34S271K 175 225 270(243-297) 455 200 25000 20000 300 4900 MYL3□34S301K 190 245 300(270-330) 495 200 25000 20000 330 4200 MYL3□34S331K 215 275 330(297-363) 540 200 25000 20000 350 3950 MYL3□34S361K 230 300 360(324-396) 595 200 25000 20000 350 3700 MYL3□34S391K 250 320 390(351-429) 650 200 25000 20000 370 3400 MYL3□34S431K 275 350 430(387-473) 710 200 25000 20000 400 3200 MYL3□34S471K 300 385 470(423-517) 775 200 25000 20000 430 3000 MYL3□34S511K 320 415 510(459-561) 855 200 25000 20000 460 2800 MYL3□34S561K 350 455 560(504-616) 945 200 25000 20000 500 2600 MYL3□34S621K 380 505 620(558-682) 1025 200 25000 20000 550 2450 MYL3□34S681K 420 560 680(612-748) 1120 200 25000 20000 600 2200 MYL3□34S751K 460 615 750(675-825) 1240 200 25000 20000 650 1700 MYL3□34S821K 510 670 820(738-902) 1355 200 25000 20000 700 1400 MYL3□34S911K 550 745 910(819-1001) 1500 200 25000 20000 750 1300 MYL3□34S102K 625 825 1000(900-1100) 1650 200 25000 20000 800 1150 MYL3□34S112K 680 895 1100(990-1210) 1815 200 25000 20000 900 850 MYL3□34S122K 705 970 1200(1080-1320) 1980 200 25000 20000 1050 740 MYL3□40D201K 130 170 200(185-225) 340 400 30000 20000 270 8000 MYL3□40D221K 140 180 220(198-242) 360 400 30000 20000 300 7900 MYL3□40D241K 150 200 240(216-264) 395 400 30000 20000 300 7800 MYL3□40D271K 175 225 270(243-297) 455 400 30000 20000 300 7500 MYL3□40D301K 190 245 300(270-330) 495 400 30000 20000 330 7300 MYL3□40D331K 215 275 330(297-363) 540 400 30000 20000 350 6800 MYL3□40D361K 230 300 360(324-396) 595 400 30000 20000 350 6300 MYL3□40D391K 250 320 390(351-429) 650 400 30000 20000 370 6000 MYL3□40D431K 275 350 430(387-473) 710 400 30000 20000 400 5500 MYL3□40D471K 300 385 470(423-517) 775 400 30000 20000 430 5000 MYL3□40D511K 320 415 510(459-561) 855 400 40000 25000 460 4700 MYL3□40D561K 350 455 560(504-616) 945 400 40000 25000 500 4450 MYL3□40D621K 380 505 620(558-682) 1025 400 40000 25000 550 4100 MYL3□40D681K 420 560 680(612-748) 1120 400 40000 25000 600
3700 MYL3□40D751K 460 615 750(675-825) 1240 400 40000 25000 650 3500 MYL3□40D781K 485 640 780(702-858) 1280 400 40000 25000 650 3100 MYL3□40D821K 510 670 820(738-902) 1355 400 40000
25000 700 2700 MYL3□40D911K 550 745 910(819-1001) 1500 400 40000 25000 750 2450 MYL3□40D102K 625 825 1000(900-1100) 1650 400 40000 25000 800 2100 MYL3□40D112K 680 895 1100(990-1210) 1815 400 40000 25000 900 1700 MYL3□60D201K 130 170 200(185-225) 340 500 50000 30000 450 16000 MYL3□60D221K 140 180 220(198-242) 360 500 50000 30000 450 15000 MYL3□60D241K 150 200 240(216-264) 395 500 50000 30000 530 14500 MYL3□60D271K 175 225 270(243-297) 455 500 50000 30000 550 12000 MYL3□60D301K 190 245 300(270-330) 495 500 50000 30000 600 10500 MYL3□60D331K 215 275 330(297-363) 540 500 50000 30000 650 9500 MYL3□60D361K 230 300 360(324-396) 595 500 70000 45000 700 8300 MYL3□60D391K 250 320 390(351-429) 650 500 70000 45000 880 7600 MYL3□60D431K 275 350 430(387-473) 710 500 70000 45000 950 7000 MYL3□60D471K 300 385 470(423-517) 775 500 70000 45000 1000 6500 MYL3□60D511K 320 415 510(459-561) 855 500 70000 45000 1100 5200 MYL3□60D561K 350 455 560(504-616) 945 500 70000 45000 1200 4500 MYL3□60D621K 380 505 620(558-682) 1025 500 70000 45000 1300 4000 MYL3□60D681K 420 560 680(612-748) 1120 500 70000 45000 1500 3600 MYL3□60D751K 460 615 750(675-825) 1240 500 70000 45000 1500 3100 MYL3□60D781K 485 640 780(702-858) 1280 500 70000 45000 1600 2850 MYL3□60D821K 510 670 820(738-902) 1355 500 70000 45000 1800 2700 MYL3□60D911K 550 745 910(819-1001) 1500 500 70000 45000 2000 2500 MYL3□60D102K 625 825 1000(900-1100) 1650 500 70000 45000 2300 2300 MYL3□60D112K 680 895 1100(990-1210) 1815 500 70000 45000 2600 2000 MYL3□60D122K 705 970 1200(1080-1320) 1980 500 70000 45000 2600 1900 Note:
①The electrical parameters of MYL3B and MYL3C products refer to the MYL3A product.
②Operating Temperature Range: -40to85℃
③Storage Temperature Range: -40to110℃
The company can also produce varistors with higher voltages according to customer requirements. Currently, the company can produce the highest varistor The voltage is 2700V
Key words:
MYL3 lightning protection varistor series
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