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| Part Number | RHEF050 | RKEF050 | RHEF650 | RHEF070 | RHEF450 | RHEF550 | RHEF750 |
|---|---|---|---|---|---|---|---|
| Manufacturer | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. |
| Product Status | Active | Active | Active | Active | Active | Active | Active |
| Type | Polymeric | Polymeric | Polymeric | Polymeric | Polymeric | Polymeric | Polymeric |
| Voltage - Max | 30V | 60V | 16V | 30V | 16V | 16V | 16V |
| Current - Max | 40 A | 40 A | 100 A | 40 A | 100 A | 100 A | 100 A |
| Current - Hold (Ih) (Max) | 500 mA | 500 mA | 6.5 A | 700 mA | 4.5 A | 5.5 A | 7.5 A |
| Current - Trip (It) | 920 mA | 1 A | 12 A | 1.4 A | 7.8 A | 10 A | 13.1 A |
| Time to Trip | 2.5 s | 800 ms | 5.5 s | 3.2 s | 3 s | 6 s | 7 s |
| Resistance - Initial (Ri) (Min) | 480 mOhms | 320 mOhms | 11 mOhms | 300 mOhms | 22 mOhms | 15 mOhms | 9.4 mOhms |
| Resistance - Post Trip (R1) (Max) | 1.1 Ohms | 900 mOhms | 26 mOhms | 800 mOhms | 54 mOhms | 37 mOhms | 22 mOhms |
| Resistance - 25°C (Typ) | - | - | - | - | - | - | - |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 85°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C |
| Ratings | - | - | - | - | - | - | - |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole |
| Package / Case | Radial, Disc | Radial, Disc | Radial, Disc | Radial, Disc | Radial, Disc | Radial, Disc | Radial, Disc |
| Size / Dimension | 0.291" Dia x 0.118" T (7.40mm x 3.00mm) | 0.280" L x 0.140" W (7.10mm x 3.56mm) | 0.500" L x 0.118" W (12.70mm x 3.00mm) | 0.272" L x 0.118" W (6.90mm x 3.00mm) | 0.409" L x 0.118" W (10.40mm x 3.00mm) | 0.441" Dia x 0.118" T (11.20mm x 3.00mm) | 0.551" L x 0.118" W (14.00mm x 3.00mm) |
| Height - Seated (Max) | 0.500" (12.70mm) | 0.450" (11.43mm) | 0.874" (22.20mm) | 0.425" (10.80mm) | 0.614" (15.60mm) | 0.744" (18.90mm) | 0.925" (23.50mm) |
| Thickness (Max) | - | - | - | - | - | - | - |
| Lead Spacing | 0.199" (5.05mm) | 0.199" (5.05mm) | 0.199" (5.05mm) | 0.199" (5.05mm) | 0.199" (5.05mm) | 0.199" (5.05mm) | 0.199" (5.05mm) |
