This document is about the technical data of NEC/TOKIN EC2 series and EE2 series miniature signal relays
The handbook describes the basic characteristics, mechanical structure, and electrical specifications of NEC's EC2 and EE2 miniature signal relays. It includes data on switching power, coil parameters, contact resistance, thermal and magnetic characteristics, and high‑frequency behavior.
Extensive test data are presented, covering environmental tests (temperature, moisture, vibration, shock), as well as contact life tests under various resistive loads. Test conditions such as 125 Vac 0.5 A (test G) and 30 Vdc 1 A (test H) are detailed, along with operating and release voltage measurements.
| Contact load voltage (Test G) | 125 Vac |
|---|---|
| Contact load current (Test G) | 0.5 A |
| Contact load voltage (Test H) | 30 Vdc |
| Contact load current (Test H) | 1 A |
NEC/TOKIN devices are classified into three quality grades: Standard, Special, and Specific.
Standard‑grade devices are recommended for computers, office equipment, communications equipment, test and measurement equipment, audio‑visual equipment, home electronic appliances, machine tools, personal electronic equipment, and industrial robots.
A diode may be connected in parallel with the relay coil to protect the IC from the counter‑electromotive force.