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| Part Number | RUSB250 | RUSBF250 |
|---|---|---|
| Manufacturer | Littelfuse Inc. | Littelfuse Inc. |
| Product Status | Obsolete | Active |
| Type | Polymeric | Polymeric |
| Voltage - Max | 16V | 16V |
| Current - Max | 40 A | 40 A |
| Current - Hold (Ih) (Max) | 2.5 A | 2.5 A |
| Current - Trip (It) | 5 A | 5 A |
| Time to Trip | 40 s | 40 s |
| Resistance - Initial (Ri) (Min) | 20 mOhms | 20 mOhms |
| Resistance - Post Trip (R1) (Max) | 60 mOhms | 60 mOhms |
| Resistance - 25°C (Typ) | - | - |
| Operating Temperature | - | -40°C ~ 85°C |
| Ratings | - | - |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | Radial, Disc | Radial, Disc |
| Size / Dimension | 0.449" L x 0.118" W (11.40mm x 3.00mm) | 0.449" L x 0.118" W (11.40mm x 3.00mm) |
| Height - Seated (Max) | 0.720" (18.30mm) | 0.720" (18.30mm) |
| Thickness (Max) | - | - |
| Lead Spacing | 0.199" (5.05mm) | 0.118" (3.00mm) |
