| Part Number | MF-R400 | MF-R900 |
|---|---|---|
| Manufacturer | Bourns Inc. | Bourns Inc. |
| Category | PTC Resettable Fuses | PTC Resettable Fuses |
|
|
|
| Product Status | Active | Active |
| Type | Polymeric | Polymeric |
| Voltage - Max | 30V | 30V |
| Current - Max | 40 A | 40 A |
| Current - Hold (Ih) (Max) | 4 A | 9 A |
| Current - Trip (It) | 8 A | 18 A |
| Time to Trip | 12.7 s | 20 s |
| Resistance - Initial (Ri) (Min) | 10 mOhms | 5 mOhms |
| Resistance - Post Trip (R1) (Max) | 50 mOhms | 20 mOhms |
| Resistance - 25°C (Typ) | - | - |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Ratings | - | - |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | Radial, Disc | Radial, Disc |
| Size / Dimension | 0.567" L x 0.118" W (14.40mm x 3.00mm) | 0.953" L x 0.118" W (24.20mm x 3.00mm) |
| Height - Seated (Max) | 0.976" (24.80mm) | 1.295" (32.90mm) |
| Thickness (Max) | - | - |
| Lead Spacing | 0.201" (5.10mm) | 0.402" (10.20mm) |