The SMBJ70CA is a surface-mount bi-directional transient-voltage suppressor (TVS) diode. It is RoHS compliant and manufactured by Taiwan Semiconductor Manufacturing Company (TWGMC). The device is designed to protect against voltage transients induced by ESD (electrostatic discharge) and lightning on telecom, data, and signal lines. It has an unidirectional and bidirectional working voltage of 70 volts with peak pulse power of 600 watts. The SMBJ70CA features a low-clamping voltage, low power consumption, low leakage current, and fast response time. It is suitable for use in a wide range of applications, such as telecom and networking, consumer electronic, automotive electronics, and power supplies.