The SMAJ18A is an ESD Suppressor Transient Voltage Suppressor (TVS) Diode manufactured by Yageo. It is part of the DO-214AC package series intended for surface mounting on printed circuit boards. This diode has an maximum stand-off voltage of 18 Volts and has a working peak pulse power dissipation rating of 600W. The device has a clamping voltage of 29.2 Volts and is supplied on a 13” reel to enable high-speed automated assembly. It is intended for use in telecommunications, computers, network equipment and other situations involving voltage spikes.