| Part Number | 1812L150/12DR | 1812L160/12DR | 
|---|---|---|
| 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 | 12V | 12V | 
| Current - Max | 100 A | 100 A | 
| Current - Hold (Ih) (Max) | 1.5 A | 1.6 A | 
| Current - Trip (It) | 3 A | 2.8 A | 
| Time to Trip | 500 ms | 1 s | 
| Resistance - Initial (Ri) (Min) | 40 mOhms | 30 mOhms | 
| Resistance - Post Trip (R1) (Max) | 110 mOhms | 100 mOhms | 
| 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) | 0.049" (1.25mm) | 0.049" (1.25mm) | 
| Lead Spacing | - | - |