| PartNumber | TRF250-120US | TRF250-120US-2 | TRF250-120UST-B-0.5 |
| Description | Resettable Fuses - PPTC | Resettable Fuses - PPTC 60V 3A 10Ohms | Resettable Fuses - PPTC |
| Manufacturer | Littelfuse | Littelfuse | - |
| Product Category | Resettable Fuses - PPTC | Resettable Fuses - PPTC | - |
| RoHS | Y | Y | - |
| Series | TRF250 | TRF250 | - |
| Mounting Style | Through Hole | Through Hole | - |
| Termination Style | Radial | Radial | - |
| Hold Current | 120 mA | 120 mA | - |
| Maximum Voltage | 60 V | 60 V | - |
| Trip Current | 240 mA | 240 mA | - |
| Current Rating Max | 3 A | - | - |
| Resistance | 16 Ohms | 10 Ohms | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Packaging | Bulk | Reel | - |
| Type | PolySwitch Resettable Fuses | PolySwitch Resettable Fuses | - |
| Brand | Littelfuse | Littelfuse | - |
| Pd Power Dissipation | 1 W | 1 W | - |
| Product Type | Resettable Fuses - PPTC | Resettable Fuses - PPTC | - |
| Factory Pack Quantity | 500 | 1500 | - |
| Subcategory | PPTC Resettable Fuses | PPTC Resettable Fuses | - |
| Tradename | PolySwitch | PolySwitch | - |
| Part # Aliases | RF0019-000 | RF0431-000 | - |
| Lead Spacing | - | 5 mm | - |
| Height | - | 4.7 mm | - |
| Length | - | 6 mm | - |
| Width | - | 5.7 mm | - |