The SMBJ78CHE3/5B is a Transient Voltage Suppressor (TVS) diode manufactured by Vishay. It is designed to protect sensitive electronic components from voltage transients induced by lightning, inductive load switching, and electrostatic discharge (ESD). This is a bidirectional TVS diode.

Applications

• I/O Ports
• VCC bus protection
• Data line protection
• Microprocessor protection
• Voltage suppression in sensitive electronic equipment

Features

• Glass passivated junction
• Bidirectional
• Excellent clamping capability
• Low incremental surge resistance
• Typical IR less than 1 μA above 10 V
• AEC-Q101 qualified available
• UL Recognized File # E187329
• Compliant to RoHS directive 2011/65/EU and in accordance to WEEE 2002/96/EC

Benefits

• Provides robust overvoltage protection for sensitive electronic circuits.
• Enhances the reliability of electronic systems by preventing damage from transient voltage events.
• Excellent clamping capability ensures a low clamping voltage, protecting downstream components.
• The device's compact size makes it suitable for space-constrained applications.
• Reduces downtime and repair costs associated with voltage-related failures.

Additional Details

The SMBJ78CHE3/5B has a standoff voltage of 78 V. It offers a peak pulse power dissipation of 600 W at 10/1000 μs waveform. The TVS diode has a fast response time, allowing it to quickly clamp transient voltages. The operating junction temperature ranges from -55 °C to +150 °C. It exhibits a low reverse leakage current. The diode meets MSL level 1, per J-STD-020, LF maximum peak of 260 °C. The part is RoHS compliant. The maximum clamping voltage at peak pulse current is about 126 V. The AEC-Q101 qualification makes this part a good option for automotive applications.