Voltage resistance, Zener diodes, High-voltage transients, TVS diode array

 SM6T Series 600 W 36 V Bi Directional Transient Voltage Suppressor - DO-214AA

https://www.futureelectronics.com/p/electromechanical--circuit-protection--tvs-diodes/sm6t36cay-stmicroelectronics-6152925