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| Part Number | TRF250-120T-RA-B-0.5 | TRF250-120T-RF-B-0.5 | TRF250-120T-RC-B-0.5 | TCF250-120T-RA-B-0.5 | TRF250-120T-R1-B-0.5 | TRF250-120T-R2-B-0.5 |
|---|---|---|---|---|---|---|
| Manufacturer | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. |
| Product Status | Active | Active | Active | Active | Active | Active |
| Type | Polymeric | Polymeric | Polymeric | Polymeric | Polymeric | Polymeric |
| Voltage - Max | 60V (250V Int) | 60V (250V Int) | 60V (250V Int) | 60V (250V Int) | 60V (250V Int) | 60V (250V Int) |
| Current - Max | 3 A | 3 A | 3 A | 3 A | 3 A | 3 A |
| Current - Hold (Ih) (Max) | 120 mA | 120 mA | 120 mA | 120 mA | 120 mA | 120 mA |
| Current - Trip (It) | 240 mA | 240 mA | 260 mA | 240 mA | 240 mA | 240 mA |
| Time to Trip | 1.2 s | 900 ms | 3 s | 600 ms | 1 s | 750 ms |
| Resistance - Initial (Ri) (Min) | 7 Ohms | 6 Ohms | 5.4 Ohms | 6.3 Ohms | 6 Ohms | 8 Ohms |
| Resistance - Post Trip (R1) (Max) | 16 Ohms | 16 Ohms | 14 Ohms | 18 Ohms | 16 Ohms | 16 Ohms |
| Resistance - 25°C (Typ) | - | - | - | - | - | - |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Ratings | - | - | - | - | - | - |
| Mounting Type | Through Hole | Through Hole | Through Hole | Surface Mount | Through Hole | Through Hole |
| Package / Case | Radial, Disc | Radial, Disc | Radial, Disc | Nonstandard SMD | Radial, Disc | Radial, Disc |
| Size / Dimension | 0.256" L x 0.181" W (6.50mm x 4.60mm) | 0.256" L x 0.181" W (6.50mm x 4.60mm) | 0.256" L x 0.181" W (6.50mm x 4.60mm) | 0.217" L x 0.217" W (5.50mm x 5.50mm) | 0.256" L x 0.181" W (6.50mm x 4.60mm) | 0.256" L x 0.181" W (6.50mm x 4.60mm) |
| Height - Seated (Max) | 0.433" (11.00mm) | 0.433" (11.00mm) | 0.433" (11.00mm) | - | 0.433" (11.00mm) | 0.433" (11.00mm) |
| Thickness (Max) | - | - | - | 0.091" (2.30mm) | - | - |
| Lead Spacing | 0.197" (5.00mm) | 0.197" (5.00mm) | 0.197" (5.00mm) | - | 0.197" (5.00mm) | 0.197" (5.00mm) |
