| Part Number | 1812L050PR | 1812L020PR |
|---|---|---|
| Manufacturer | Littelfuse Inc. | Littelfuse Inc. |
| Category | PTC Resettable Fuses | PTC Resettable Fuses |
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| Product Status | Active | Active |
| Type | Polymeric | Polymeric |
| Voltage - Max | 15V | 30V |
| Current - Max | 100 A | 100 A |
| Current - Hold (Ih) (Max) | 500 mA | 200 mA |
| Current - Trip (It) | 1 A | 400 mA |
| Time to Trip | 150 ms | 20 ms |
| Resistance - Initial (Ri) (Min) | 150 mOhms | 800 mOhms |
| Resistance - Post Trip (R1) (Max) | 1 Ohms | 5 Ohms |
| Resistance - 25°C (Typ) | - | - |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Ratings | - | - |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 1812 (4532 Metric), Concave | 1812 (4532 Metric), Concave |
| Size / Dimension | 0.179" L x 0.128" W (4.55mm x 3.24mm) | 0.179" L x 0.128" W (4.55mm x 3.24mm) |
| Height - Seated (Max) | - | - |
| Thickness (Max) | 0.030" (0.75mm) | 0.039" (1.00mm) |
| Lead Spacing | - | - |