The NEC EP2F / EP1F series are PC-board mount type automotive relays suitable for various motor controls and other applications that require a high level of quality and performance. The operate temperature range for EP2F / EP1F series is –40˚C through +125˚C. By this high heat resistivity, the contact carrying current of EP2F / EP1F series at 25˚C increases 1.3 or 1.4 times compared with that of EP2 / EP1 series.
The EP2F/EP1F series are PCB‑mount automotive relays designed for motor and solenoid reversible control, power windows, sunroofs and wiper systems. They feature high heat resistivity, allowing higher contact carrying current compared with earlier series.
Technical specifications include contact material, resistance, switching voltage, current ratings, operate/release times, power consumption, insulation resistance, and environmental limits. Detailed coil ratings and mechanical life data are provided for both H‑bridge and separate‑type configurations.
| Operating Temperature Range | -40 °C to +125 °C |
|---|---|
| Contact Material | Silver oxide complex alloy |
| Contact Resistance | 50 mΩ max (measured at 7 A) |
| Contact Switching Voltage | 16 Vdc max |
| Contact Carrying Current (25 °C) | 35 A (2 min, 12 Vdc) |
| Operate Time | ≈5 ms at 12 Vdc |
| Release Time | ≈2 ms at 12 Vdc |
| Normal Operate Power | 0.64 W at 12 Vdc |
| Insulation Resistance | 100 MΩ min (at 500 Vdc) |
| Breakdown Voltage | 500 Vdc min (1 min) |
The relays operate from –40 °C up to +125 °C.
The contacts are made of a silver oxide complex alloy.
The relay can carry 30 A for up to 2 minutes at 12 Vdc when the ambient temperature is 125 °C.