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| PartNumber | V20E420 | V20E40P | V20E420AUTO |
| Description | Varistors 420Vrms 10kA 600pF 20mm Disc | Varistors 40Vrms 8kA 9000pF 20mm Disc | Varistors RADIAL VARISTOR 20MM ROHS/LEAD FREE |
| Manufacturer | Littelfuse Inc. | Littelfuse Inc. | - |
| Product Category | TVS - Varistors, MOVs | TVS - Varistors, MOVs | - |
| Series | UltraMOV | LV UltraMOV | - |
| Product | MOV | MOV | - |
| Type | Varistors | Radial Leaded Varistors | - |
| Packaging | Bulk | Bulk | - |
| Termination Style | Radial | Radial | - |
| Tradename | UltraMOV | UltraMOV | - |
| Mounting | Radial | Through Hole | - |
| Operating Temperature Range | - 55 C to + 85 C | - 40 C to + 85 C | - |
| Package Case | Disc 20mm | Disc 20mm | - |
| Capacitance | 600 pF | 8500 pF | - |
| Mounting Type | Through Hole | Through Hole | - |
| Number of Circuits | 1 | 1 | - |
| Diameter | 20 mm | 20 mm | - |
| Varistor Voltage Min | 612V | 61.2V | - |
| Varistor Voltage Typ | 680V | 68V | - |
| Varistor Voltage Max | 748V | 74.8V | - |
| Current Surge | 10kA | 8kA | - |
| Maximum AC Volts | 420VAC | 40VAC | - |
| Maximum DC Volts | 560VDC | 56VDC | - |
| Energy | 320J | 150J | - |
| Voltage Rating AC | 420 VAC | 40 VAC | - |
| Voltage Rating DC | 560 VDC | 56 VDC | - |
| Clamping Voltage | 1.12 kV | 135 V | - |
| Peak Surge Current | 10 kA | 8000 A | - |
| Surge Energy Rating | 1120 J | 140 J | - |
| Current Rating | - | 20 A | - |
| Height | - | - | - |
| Length | - | - | - |
| Width | - | 5.6 mm | - |
| Tolerance | - | - | - |
| Lead Spacing | - | 8.5 mm | - |
| Varistor Voltage | - | 68 VDC | - |
| Case Code in | - | - | - |
| Case Code mm | - | - | - |