The SMBJ120CA/2 is a transient voltage suppressor (TVS) diode manufactured by Vishay. This bidirectional TVS diode is specifically designed to protect sensitive electronic components from voltage transients caused by lightning, inductive load switching, and electrostatic discharge (ESD). As part of the SMBJ series, it features a compact size and high surge capability.

Applications

• Protection of I/O interfaces
• Overvoltage protection in sensitive equipment
• Surge protection in consumer electronics
• Protection of data lines and power lines
• Automotive electronics protection

Features

• Bidirectional TVS diode
• Surface mount SMB package
• Low profile package
• Glass passivated junction
• Excellent clamping capability
• Low incremental surge resistance
• Fast response time: Typically less than 1.0 ps from 0 V to BV min
• High temperature soldering guaranteed: 260 °C/10 seconds at terminals
• AEC-Q101 qualified

Benefits

• Provides robust overvoltage protection for sensitive circuits
• Compact size allows for use in space-constrained applications
• High surge capability ensures reliable protection against transient events
• Fast response time minimizes voltage overshoot
• AEC-Q101 qualification ensures reliability in automotive applications
• Easy to integrate into existing designs
• Bidirectional protection simplifies circuit design

Technical Specifications

The SMBJ120CA/2 has a standoff voltage of 120 V and a breakdown voltage between 133 V and 147 V. Its maximum peak pulse power dissipation is 600 W. The clamping voltage at peak pulse current is typically 193 V. It is designed to operate over a temperature range of -65 °C to +150 °C.

The SMBJ120CA/2 utilizes a glass passivated junction, which provides high reliability and stability. The device's construction meets stringent quality standards, making it suitable for demanding applications where overvoltage protection is critical. The bidirectional functionality makes it easier to implement in circuits where the polarity of the transient voltage is unknown or can vary.