The automatic parking system for cars is a system that automatically parks the car in the correct parking spot without human intervention. Due to the harsh working environment of automobiles, transient phenomena such as turning on and off the onboard power supply and load often occur, resulting in large surge voltages in the circuit, generally exceeding several times the power supply voltage. This is extremely destructive to other electronic devices in the car. Therefore, it is urgent to carry out surge protection for the automatic parking system of the car.

SOCAY has recommended the SM8S33A and a high-power transient voltage diode focus for surge protection in 24V automatic parking systems. The device adopts DO-218AB surface mount packaging, which is easy to solder. SM8S33A can provide unidirectional protection, with low leakage current and low forward voltage drop, and fast response time. It compliant with AEC-Q101 automotive standards, and can pass the ISO7637-2 (5a) automotive load drop test with a surge level of 174V, 350ms, and 4Ω.

The working voltage of SM8S33A is 33V, and the maximum power can reach 6600W.

SM8S33A has strong high temperature resistance and a working temperature range of -55 ℃~+175 ℃.

Typical parameters of SM8S33A transient suppression diode:

Off state voltage VRMM: 33V

Breakdown voltage VBR: 36.7~40.6V

Clamp voltage VC (@ IPP=124A): 53.3V

Maximum power Ppp: 6600W

Protection application of SM8S33A transient suppression diode: