The SMCJ20A is an Electronic Part manufactured by Yenji. It is a Transient Voltage Suppressor (TVS) with a DO-214AB form factor and is compliant with Restriction or Hazardous Substances (RoHS) standards. It is designed to provide protection against voltage transient surges, clamping, and more for multiple electronic components, devices, and circuits. It is capable of handling high power, high repetitive peak pulse current up to 20A. The device is widely used in various electronic industries such as automotive, communication, and industrial due to its high surge capability, good clamping capability, and low leakage current. It is also available in commercial, industrial, and military temperature ranges.