What is Automotive Relay?

Automotive relays are relays used in automobiles. Such relays have high switching load power, high shock resistance, and vibration resistance. Most power supplies in automobiles use 12V, and most of the coil voltages are designed to be 12V. Because it's supplied by the battery, the voltage is unstable. The pull-up voltage V≤60%VH (rated working voltage), and the coil overvoltage is allowed to reach 1.5VH. Besides, the power consumption of the coil is relatively large, generally 1.6-2W, and the temperature rise is relatively high.

The environmental requirements are quite harsh: in the engine compartment, the ambient temperature range is -40℃-125℃, and the ambient temperature range of other locations is -40℃-85℃. The relay used in the engine compartment must withstand sand, dust, water, and salt, oil, vibration, and shock.