| PartNumber | RXEF300 | RXEF300-2 | RXEF300-1 |
| Description | Resettable Fuses - PPTC Radial Lead 3A 72V 40A Imax | Resettable Fuses - PPTC Radial Lead 3A 72V 40A Imax | Resettable Fuses - PPTC 3A 72V 40A Imax |
| Manufacturer | Littelfuse | Littelfuse | Littelfuse |
| Product Category | Resettable Fuses - PPTC | Resettable Fuses - PPTC | Resettable Fuses - PPTC |
| RoHS | Y | Y | Y |
| Series | RXEF | RXEF | RXEF |
| Mounting Style | Through Hole | Through Hole | Through Hole |
| Termination Style | Radial | Radial | Radial |
| Hold Current | 3 A | 3 A | 3 A |
| Maximum Voltage | 72 V | 72 V | 72 V |
| Trip Current | 6 A | 6 A | 6 A |
| Current Rating Max | 40 A | 40 A | 40 A |
| Resistance | 100 mOhms | 100 mOhms | 100 mOhms |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Lead Spacing | 10.9 mm | - | 10.9 mm |
| Packaging | Bulk | Reel | Bulk |
| Diameter | 23.9 mm | 23.9 mm | 23.9 mm |
| Height | 3 mm | - | 3 mm |
| Length | 28.6 mm | - | 28.6 mm |
| Type | PolySwitch Resettable Fuses | PolySwitch Resettable Fuses | PolySwitch Resettable Fuses |
| Brand | Littelfuse | Littelfuse | Littelfuse |
| Pd Power Dissipation | 2.8 W | 2.8 W | 2.8 W |
| Product Type | Resettable Fuses - PPTC | Resettable Fuses - PPTC | Resettable Fuses - PPTC |
| Factory Pack Quantity | 250 | 1000 | 250 |
| Subcategory | PPTC Resettable Fuses | PPTC Resettable Fuses | PPTC Resettable Fuses |
| Tradename | PolySwitch | PolySwitch | PolySwitch |
| Part # Aliases | E37266-000 RF2650-000 | D44820-000 RF2693-000 | RF0513-000 RF2707-000 |
| Unit Weight | 0.048643 oz | 0.048643 oz | 0.048643 oz |