The SMBJ78CA is a bidirectional transient voltage suppressor diode designed for surge and ESD protection in compact surface-mount applications. It features a working peak reverse voltage of 78 V, a breakdown voltage range of 86.7 V to 95.8 V, and a maximum reverse voltage of 10 V, with a maximum clamping voltage of 126 V at 4.8 A peak current. The device is housed in a DO-214AA (SMB) package and offers fast response times of less than 5.0 picoseconds, making it ideal for protecting sensitive electronics in portable communications, computing, and video equipment from transient overvoltage events. With 600 watts of power dissipation capability and RoHS compliance, the SMBJ78CA is well-suited for IEC 61000-4-2 ESD, IEC 61000-4-4 EFT, and IEC 61000-4-5 surge protection applications.