| PartNumber | V39ZS20PX2855 | V39ZS20P | V39ZS20PX10 |
| Description | Varistors 20MM Radial | Varistors 20MM Radial | Varistors 20MM Radial |
| Manufacturer | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. |
| Product Category | TVS - Varistors, MOVs | TVS - Varistors, MOVs | TVS - Varistors, MOVs |
| Series | ZS | ZS | ZS |
| Packaging | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) |
| Package Case | Disc 20mm | Disc 20mm | Disc 20mm |
| Mounting Type | Through Hole | Through Hole | Through Hole |
| Number of Circuits | 1 | 1 | 1 |
| Varistor Voltage Min | 35.1V | 35.1V | 35.1V |
| Varistor Voltage Typ | 39V | 39V | 39V |
| Varistor Voltage Max | 42.9V | 42.9V | 42.9V |
| Current Surge | 2kA | 2kA | 2kA |
| Maximum AC Volts | 25VAC | 25VAC | 25VAC |
| Maximum DC Volts | 31VDC | 31VDC | 31VDC |
| Energy | 20J | 20J | 20J |