Metal oxide varistors consist of approximately 90% zinc oxide as a ceramic base material plus other filler materials for the formation of junctions between the zinc oxide grains. The Metal Oxide Varistor or MOV for short, is a voltage dependent resistor in which the resistance material is a metallic oxide, primarily zinc oxide (ZnO) pressed into a ceramic like material.
Metal oxide varistors has become the most common type of voltage clamping device today and are available for use at a wide range of voltages and currents. The use of a metallic oxide within their construction means that MOV’s are extremely effective in absorbing short term voltage transients and have higher energy handling capabilities.
The metal oxide varistor starts conduction at a specific voltage and stops conduction when the voltage falls below a threshold voltage. The difference between a standard silicon carbide (SiC) varistor and a MOV type varistor is that the leakage current through the MOV’s zinc oxide material is very small current at normal operating conditions and its speed of operation in clamping transients is much faster.
Features:
NTE Type No. | Case Diameter | Maximum Ratings (TA = 25°C) | Characteristics | |||||
---|---|---|---|---|---|---|---|---|
Continuous | Transient | |||||||
RMS Voltage (Volts) | DC Voltage (Volts) | Energy (10/1000μs) (Joules) |
Peak Current (8/20μs) (Amps) |
Nominal Varistor Voltage @ 1mA DC Test Current (Volts) |
Maximum Clamping Voltage, VC @ Test Current (8/20μs) (Volts) |
Transient Power Dissipation (Watts) |
||
Vm (AC) | Vm (DC) | WTM | ITM | VNOM | VCL | PD | ||
1V010 | 8.5mm | 10 | 12 | 0.8 | 250 | 18 | 45 | 0.25 |
2V010 | 16mm | 10 | 12 | 3.5 | 1000 | 18 | 45 | 0.60 |
1V014 | 8.5mm | 14 | 18 | 1.2 | 250 | 22 | 55 | 0.25 |
2V014 | 16mm | 14 | 18 | 4.0 | 1000 | 22 | 55 | 0.60 |
1V015 | 8.5mm | 15 | 20 | 1.0 | 250 | 24 | 52 | 0.25 |
2V015 | 16mm | 15 | 20 | 4.5 | 1000 | 24 | 48 | 0.60 |
1V017 | 8.5mm | 17 | 22 | 1.3 | 250 | 27 | 60 | 0.25 |
2V017 | 16mm | 17 | 22 | 5.0 | 1000 | 27 | 53 | 0.10 |
1V020 | 9mm Max | 20 | 26 | 1.5 | 250 | 33 | 65 | 0.20 |
2V020 | 16mm | 20 | 26 | 6.0 | 1000 | 33 | 70 | 0.60 |
1V025 | 8.5mm | 25 | 31 | 1.7 | 250 | 39 | 80 | 0.25 |
2V025 | 16mm | 25 | 31 | 7.0 | 1000 | 39 | 80 | 0.60 |
1V030 | 8.5mm | 30 | 38 | 2.3 | 250 | 47 | 95 | 0.25 |
2V030 | 16mm | 30 | 38 | 8.5 | 1000 | 47 | 95 | 0.60 |
1V035 | 8.5mm | 35 | 45 | 2.7 | 250 | 56 | 110 | 0.25 |
2V035 | 16mm | 35 | 45 | 10.0 | 1000 | 56 | 110 | 0.60 |
1V040 | 8.5mm | 40 | 55 | 3.2 | 250 | 68 | 135 | 0.25 |
2V040 | 16mm | 40 | 55 | 13.0 | 1000 | 68 | 135 | 0.60 |
1V050 | 8.5mm | 50 | 66 | 4.0 | 250 | 82 | 150 | 0.25 |
2V050 | 16mm | 50 | 66 | 14.0 | 1000 | 82 | 150 | 0.60 |
1V060 | 8.5mm | 60 | 80 | 6.0 | 1200 | 100 | 175 | 0.25 |
2V060 | 16mm | 60 | 80 | 18.0 | 4500 | 100 | 175 | 0.60 |
1V075 | 8.5mm | 75 | 95 | 5.0 | 1200 | 120 | 205 | 0.25 |
2V075 | 16mm | 75 | 95 | 21.0 | 4500 | 120 | 205 | 0.60 |
1V095 | 8.5mm | 95 | 125 | 7.0 | 1200 | 150 | 250 | 0.25 |
2V095 | 16mm | 95 | 125 | 29.0 | 4500 | 150 | 250 | 0.60 |
1V115 | 8.5mm | 115 | 150 | 10.0 | 1200 | 171 | 295 | 0.25 |
2V115 | 16mm | 115 | 150 | 35.0 | 4500 | 171 | 300 | 0.60 |
1V130 | 8.5mm | 135 | 180 | 10.0 | 1200 | 216 | 355 | 0.25 |
2V130 | 16mm | 135 | 180 | 39.0 | 4500 | 216 | 355 | 0.60 |
524V13 | 23mm | 135 | 180 | 72.0 | 6500 | 216 | 355 | 1.00 |
1V150 | 8.5mm | 135 | 210 | 10.0 | 1200 | 240 | 410 | 0.25 |
2V150 | 16mm | 160 | 210 | 40.0 | 4500 | 240 | 410 | 0.60 |
524V15 | 23mm | 160 | 210 | 80.0 | 6500 | 240 | 410 | 1.00 |
1V175 | 8.5mm | 170 | 225 | 12.0 | 1200 | 270 | 450 | 0.25 |
524V17 | 23mm | 170 | 225 | 90.0 | 6500 | 270 | 450 | 1.00 |
1V250 | 8.5mm | 250 | 320 | 20.0 | 1200 | 390 | 630 | 0.25 |
2V250 | 16mm | 250 | 320 | 70.0 | 4500 | 390 | 630 | 0.60 |
524V25 | 23mm | 250 | 320 | 129.0 | 6500 | 390 | 630 | 1.00 |
1V275 | 8.5mm | 275 | 330 | 20.0 | 1200 | 430 | 685 | 0.25 |
2V275 | 16mm | 275 | 330 | 72.0 | 4500 | 430 | 685 | 0.60 |
524V27 | 23mm | 275 | 330 | 135.0 | 6500 | 430 | 685 | 1.00 |
1V300 | 8.5mm | 300 | 370 | 22.0 | 1200 | 470 | 740 | 0.25 |
2V300 | 16mm | 300 | 370 | 79.0 | 4500 | 470 | 740 | 0.60 |
524V30 | 23mm | 300 | 370 | 149.0 | 6500 | 470 | 740 | 1.00 |
2V420 | 16mm | 420 | 560 | 90.0 | 4500 | 680 | 1110 | 0.60 |
524V42 | 23mm | 420 | 560 | 160.0 | 6500 | 680 | 1110 | 1.00 |
2V480 | 16mm | 480 | 640 | 105.0 | 4500 | 750 | 1240 | 0.60 |
524V48 | 23mm | 480 | 640 | 180.0 | 6500 | 750 | 1240 | 1.00 |