TVS zener diode, Transient voltage suppression diode, What is a TVS Diodes - tatanh1983/conchodom GitHub Wiki

SM Series 12 V 400 W Asymmetrical TVS Diode for Extended Common-Mode - SOT-23

https://www.futureelectronics.com/p/electromechanical--circuit-protection--tvs-diodes/sm712-tct-semtech-1709229