| PartNumber | V421DHB34 | V421DA40 | V421DB40 |
| Description | Varistors DHB Series | Varistors 420V 40kA 6000pF | Varistors 420V 40kA 6000pF |
| Manufacturer | Littelfuse | Littelfuse Inc. | Littelfuse Inc. |
| Product Category | Varistors | TVS - Varistors, MOVs | TVS - Varistors, MOVs |
| RoHS | Y | - | - |
| Series | DHB34 | DA | DB |
| Product | MOV | - | - |
| Mounting Style | PCB Mount | - | - |
| Termination Style | Radial | Screw | - |
| Voltage Rating AC | 420 VAC | 420 VAC | - |
| Voltage Rating DC | 680 VDC | 560 VDC | - |
| Clamping Voltage | 1.13 kV | 1.13 kV | - |
| Diameter | 34 mm | 60 mm | - |
| Peak Surge Current | 40 kA | 40 kA | - |
| Capacitance | 3000 pF | 3000 pF | - |
| Minimum Operating Temperature | - 55 C | - | - |
| Maximum Operating Temperature | + 85 C | - | - |
| Packaging | Bulk | Bulk | Bulk |
| Brand | Littelfuse | - | - |
| Product Type | Varistors | - | - |
| Factory Pack Quantity | 30 | - | - |
| Subcategory | Varistors | - | - |
| Type | - | Varistor | - |
| Mounting | - | SMD/SMT | - |
| Operating Temperature Range | - | - 55 C to + 85 C | - |
| Height | - | 15 mm | - |
| Length | - | 62 mm | - |
| Package Case | - | Encased Disc | Blade Type, Encased |
| Mounting Type | - | Chassis Mount | Chassis Mount |
| Number of Circuits | - | 1 | 1 |
| Varistor Voltage Min | - | 612V | 612V |
| Varistor Voltage Typ | - | 680V | 680V |
| Varistor Voltage Max | - | 748V | 748V |
| Current Surge | - | 40kA | 40kA |
| Maximum AC Volts | - | 420VAC | 420VAC |
| Maximum DC Volts | - | 560VDC | 560VDC |
| Energy | - | 600J | 600J |
| Surge Energy Rating | - | 600 J | - |