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| Part Number | RXEF300 | RXEF300K | RXE300 |
|---|---|---|---|
| Manufacturer | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. |
| Product Status | Active | Active | Obsolete |
| Type | Polymeric | Polymeric | Polymeric |
| Voltage - Max | 72V | 72V | 72V |
| Current - Max | 40 A | 40 A | 40 A |
| Current - Hold (Ih) (Max) | 3 A | 3 A | 3 A |
| Current - Trip (It) | 6 A | 6 A | 6 A |
| Time to Trip | 19.8 s | 19.8 s | 19.8 s |
| Resistance - Initial (Ri) (Min) | 40 mOhms | 40 mOhms | 40 mOhms |
| Resistance - Post Trip (R1) (Max) | 100 mOhms | 100 mOhms | 100 mOhms |
| Resistance - 25°C (Typ) | - | - | - |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | - |
| Ratings | - | - | - |
| Mounting Type | Through Hole | Through Hole | Through Hole |
| Package / Case | Radial, Disc | Radial, Disc | Radial, Disc |
| Size / Dimension | 0.941" Dia x 0.118" T (23.90mm x 3.00mm) | 0.910" Dia x 0.118" T (23.11mm x 3.00mm) | 0.941" Dia x 0.118" T (23.90mm x 3.00mm) |
| Height - Seated (Max) | 1.126" (28.60mm) | 1.154" (29.30mm) | 1.126" (28.60mm) |
| Thickness (Max) | - | - | - |
| Lead Spacing | 0.400" (10.15mm) | 0.400" (10.15mm) | 0.400" (10.15mm) |
