| PartNumber | SMD1210P150TSA | SMD125F-2 | SMD125-2 |
| Description | Resettable Fuses - PPTC | Resettable Fuses - PPTC 1.25A 15V 40A Imax | PTC RESET FUSE 15V 1.25A 2SMD |
| Manufacturer | Littelfuse | Littelfuse | TE Connectivity Raychem Circuit Protection |
| Product Category | Resettable Fuses - PPTC | Resettable Fuses - PPTC | PTC Resettable Fuses |
| RoHS | N | Y | - |
| Series | SMD-P | SMD | PolySwitchR |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Termination Style | SMD/SMT | SMD/SMT | - |
| Hold Current | 1.5 A | 1.25 A | - |
| Maximum Voltage | 6 V | 15 V | - |
| Trip Current | 3 A | 2.5 A | - |
| Current Rating Max | 40 A | 40 A | - |
| Resistance | 110 mOhms | 250 mOhms | - |
| Package / Case | 1210 (3225 metric) | 2920 (7351 metric) | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Length | 3.43 mm | 7.98 mm | - |
| Type | PolyFuse Resettable Fuses | PolySwitch Resettable Fuses | - |
| Width | 2.8 mm | 5.44 mm | - |
| Brand | Littelfuse | Littelfuse | - |
| Product Type | Resettable Fuses - PPTC | Resettable Fuses - PPTC | - |
| Subcategory | PPTC Resettable Fuses | PPTC Resettable Fuses | - |
| Tradename | POLY-FUSE | PolySwitch | - |
| Packaging | - | Reel | Digi-ReelR |
| Height | - | 3 mm | - |
| Moisture Sensitive | - | Yes | - |
| Pd Power Dissipation | - | 1.7 W | - |
| Factory Pack Quantity | - | 2000 | - |
| Part # Aliases | - | C21209-000 RF0320-000 | - |
| Package Case | - | - | 2-SMD |
| Current Max | - | - | 40A |
| Current Hold Ih Max | - | - | 1.25A |
| Voltage Max | - | - | 15V |
| Current Trip It | - | - | 2.5A |
| R Min Max | - | - | 0.070 ~ 0.250 Ohm |
| Time to Trip | - | - | 2s |