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| Image | ![]() |
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| Part Number | 30R300UPR | 30R300UPR-S |
| Manufacturer | Littelfuse Inc. | Littelfuse Inc. |
| Package/Case | Radial, Disc | - |
| Series | POLY-FUSE®, 30R | - |
| Packaging | Cut Tape (CT) | Bulk |
| Product Status | Active | Obsolete |
| Type | Polymeric | - |
| Voltage - Max | 30V | - |
| Current - Hold (Ih) (Max) | 3 A | - |
| Current - Trip (It) | 6 A | - |
| Current - Max | 40 A | - |
| Time to Trip | 10.8 s | - |
| Resistance - Initial (Ri) (Min) | 20 mOhms | - |
| Resistance - Post Trip (R1) (Max) | 80 mOhms | - |
| Resistance - 25°C (Typ) | - | - |
| Operating Temperature | -40°C ~ 85°C | - |
| Grade | - | - |
| Qualification | - | - |
| Ratings | - | - |
| Mounting Type | Through Hole | - |
| Size / Dimension | 0.449" L x 0.118" W (11.40mm x 3.00mm) | - |
| Height - Seated (Max) | 0.756" (19.20mm) | - |
| Thickness (Max) | - | - |
| Lead Spacing | 0.201" (5.10mm) | - |
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