| Part Number | MF-USML400/12-2 | MF-USML450/12-2 |
|---|---|---|
| Manufacturer | Bourns Inc. | Bourns Inc. |
| Category | PTC Resettable Fuses | PTC Resettable Fuses |
|
|
|
| Product Status | Active | Active |
| Type | Polymeric | Polymeric |
| Voltage - Max | 12V | 12V |
| Current - Max | 50 A | 50 A |
| Current - Hold (Ih) (Max) | 4 A | 4.5 A |
| Current - Trip (It) | 8 A | 9 A |
| Time to Trip | 5 s | 2 s |
| Resistance - Initial (Ri) (Min) | 2 MOhms | 2 MOhms |
| Resistance - Post Trip (R1) (Max) | 18 mOhms | 14 mOhms |
| Resistance - 25°C (Typ) | - | - |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Ratings | - | - |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 1210 (3225 Metric), Concave | 1210 (3225 Metric), Concave |
| Size / Dimension | 0.127" L x 0.101" W (3.22mm x 2.58mm) | 0.127" L x 0.101" W (3.22mm x 2.58mm) |
| Height - Seated (Max) | - | - |
| Thickness (Max) | 0.047" (1.20mm) | 0.047" (1.20mm) |
| Lead Spacing | - | - |