| PartNumber | V56ZA20PX10 | V56ZA20 | V56ZA20P |
| Description | Varistors 20MM Radial | Varistors 2kA 10000pF | Varistors 2kA 10000pF |
| Manufacturer | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. |
| Product Category | TVS - Varistors, MOVs | TVS - Varistors, MOVs | TVS - Varistors, MOVs |
| Series | ZA | ZA | ZA |
| Packaging | Bulk Alternate Packaging | Bulk | Bulk Alternate Packaging |
| 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 | 50.4V | 50.4V | 50.4V |
| Varistor Voltage Typ | 56V | 56V | 56V |
| Varistor Voltage Max | 61.6V | 61.6V | 61.6V |
| Current Surge | 2kA | 2kA | 2kA |
| Maximum AC Volts | 35VAC | 35VAC | 35VAC |
| Maximum DC Volts | 45VDC | 45VDC | 45VDC |
| Energy | 30J | 30J | 30J |
| Product | - | MOV | - |
| Mounting | - | Radial | - |
| Operating Temperature Range | - | - 55 C to + 85 C | - |
| Capacitance | - | 10000 pF | - |
| Diameter | - | 20 mm | - |
| Voltage Rating AC | - | 35 VAC | - |
| Voltage Rating DC | - | 45 VDC | - |
| Clamping Voltage | - | 110 V | - |
| Peak Surge Current | - | 2 kA | - |