SMCJ300A is a unidirectional Transient Voltage Suppressor (TVS) diode from the Bourns SMCJ Series, designed for surge and ESD protection applications. This high voltage TVS diode is part of the extended voltage range offering standoff voltages from 180 V to 440 V. The SMCJ Series features a power wattage rating of 1500 W, providing robust protection for sensitive electronic components. It is available in a compact chip package format, making it suitable for portable communications, computing, and power equipment applications where space is limited and high voltage protection is required.