SMBJ15CA 600W, 15V TVS in SMB The SMBJ series is designed to protect sensitive electronic equipment from voltage transients caused by lightning and other transient voltage events. This device is commonly used to protect against surges below 600 W (10/1000 μs). Planar technology makes it suitable for high-end devices and SMPS that require low leakage current and high junction temperature for long-term reliability and stability. The SMBJ series is available in the SMB(DO-214AA) package. It's a diode on a generic control board.

SMBJ15CA BM is a universal control board diode for Antminer, Whatsminer, Innosilicon, Avalon, etc.