The SMAJ78A is a surface-mount Transient Voltage Suppressor (TVS) diode manufactured by JSCJ (JCET). Supreme Components International is an authorised distributor of this component. 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 peak pulse power dissipation of 400W. The SMAJ78A has a reverse standoff voltage of 78V and is housed in a compact SMA package, making it suitable for high-density PCB layouts. This TVS diode is commonly used in telecommunications equipment, industrial control systems, and consumer electronics to enhance system reliability and prevent damage from voltage surges. Its fast response time and low clamping voltage ensure effective protection for downstream components.