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| PartNumber | SMOV25S301NP | SMOV25S321MP | SMOV25S301MP |
| Description | Varistors Thermally Protected SMOV25S | Varistors 320Vac 420Vdc 25mm SQ | Varistors 300Vac 385Vdc 25mm SQ |
| Manufacturer | Littelfuse | Littelfuse | Littelfuse |
| Product Category | Varistors | Varistors | Varistors |
| RoHS | Y | Y | Y |
| Series | 25S | 25S | 25S |
| Packaging | Bulk | Bulk | Bulk |
| Brand | Littelfuse | Littelfuse | Littelfuse |
| Product Type | Varistors | Varistors | Varistors |
| Factory Pack Quantity | 32 | 32 | 32 |
| Subcategory | Varistors | Varistors | Varistors |
| Tradename | SMOV | SMOV | SMOV |
| Product | - | MOV | MOV |
| Mounting Style | - | PCB Mount | PCB Mount |
| Termination Style | - | Radial | Radial |
| Voltage Rating AC | - | 320 VAC | 300 VAC |
| Voltage Rating DC | - | 510 VDC | 470 VDC |
| Varistor Voltage | - | 561 V | 517 V |
| Clamping Voltage | - | 825 V | 765 V |
| Peak Surge Current | - | 20 kA | 20 kA |
| Surge Energy Rating | - | 390 J | 370 J |
| Capacitance | - | 1080 pF | 1150 pF |
| Minimum Operating Temperature | - | - 45 C | - 45 C |
| Maximum Operating Temperature | - | + 75 C | + 75 C |
| Current Rating | - | 10 A | 10 A |
| Height | - | 35.5 mm | 35.5 mm |
| Length | - | 30.5 mm | 30.5 mm |
| Width | - | 16 mm | 16 mm |