The NEC EP2S / EP1S 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 sound pressure level of EP2S / EP1S series is 57 dBA nominal when the relay operates, and 49 dBA nominal when the relay releases.
This document provides technical specifications, dimensions, and application details for the NEC EP2S/EP1S series of automotive relays. These devices are designed as PC-board mount types suitable for motor controls requiring high quality and performance, specifically noted for their low sound pressure operation.
The datasheet covers two main variants: the H Bridge Type (EP2S) and the Separate Type (EP1S). It includes detailed coil ratings, contact specifications such as switching voltage and current capacity, mechanical life expectancy, and environmental operating limits. Schematic diagrams and PCB pad layouts are also provided to assist in design integration.
| Sound Pressure Level (Operate) | 57 dBA nominal |
|---|---|
| Sound Pressure Level (Release) | 49 dBA nominal |
| Contact Form | 1 form C x2 (H bridge type and separate type) |
| Contact Material | Silver oxide complex alloy |
| Contact Switching Voltage | 16 Vdc max. |
| Ambient Temperature Range | -40°C to +85°C |
They are suitable for power window control, electrical door lock, and wiper systems.
The EP2S series is an H Bridge Type, while the EP1S series is a Separate Type.
The mechanical life is approximately 1x10^5 operations.