The SMAJ51A is a surface-mount Transient Voltage Suppressor (TVS) Diode manufactured by JSCJ (JCET). Supreme Components International is an authorised distributor of JSCJ components. This diode is designed to protect sensitive electronic circuits from voltage transients induced by lightning, inductive load switching, and electrostatic discharge (ESD). It features a standoff voltage of 51V and a peak pulse power dissipation of 400W. The SMAJ51A is housed in a compact SMA package, making it suitable for high-density PCB layouts. Its fast response time and low clamping voltage ensure effective protection for downstream components. Applications include I/O protection, VCC bus protection, and control line protection in consumer electronics, telecommunications equipment, and industrial automation systems. This robust TVS diode enhances the reliability and longevity of electronic devices by mitigating the effects of transient voltage events.