MOTOROLA SEMICONDUCTOR TECHNICAL DATA Order this.
1SMA18AT3G - 400 Watt Peak Power Zener Transient Voltage Suppressors
1SMA18AT3 - 400 Watt Peak Power Zener Transient Voltage Suppressors
SZ1SMA18AT3G - TVS Diodes
1SMA18AT3 - Zener Transient Voltage Suppressors