The SMBJ22HE3/52 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).

Applications

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

Features

• Glass passivated junction
• Available in unidirectional polarity only
• 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 SMBJ22HE3/52 has a standoff voltage of 22 V. The device provides a peak pulse power dissipation of 600 W at 10/1000 μs waveform. Its fast response time allows quick clamping of transient voltages. The operating junction temperature ranges from -55 °C to +150 °C. It exhibits a low reverse leakage current, typically less than 1 μA above 10 V. It meets MSL level 1, per J-STD-020, LF maximum peak of 260 °C. The device is RoHS compliant. The clamping voltage at peak pulse current is about 35.5V. It is often used in automotive applications due to its AEC-Q101 qualification.