The SMBJ18CA-M3/5B is a surface-mount transient voltage suppressor (TVS) diode manufactured by Vishay. It is designed to protect sensitive electronic components from voltage transients induced by lightning, electrostatic discharge (ESD), and inductive switching.

Applications

• Protection of I/O Interfaces
• Overvoltage transient protection in sensitive equipment
• Data line protection
• Telecommunication equipment
• Industrial controls
• Consumer electronics

Features

• Surface Mount SMB Package
• Bidirectional configuration
• Glass passivated chip junction
• Excellent clamping capability
• Low incremental surge resistance
• Fast response time: typically less than 1.0 ps from 0 V to VBR minimum
• Meets MSL level 1, per J-STD-020, LF maximum peak of 260 °C
• AEC-Q101 qualified

Benefits

• Provides robust overvoltage protection, preventing damage to downstream components.
• Fast response time ensures rapid clamping of transient voltages.
• Surface mount package allows for easy integration into automated assembly processes.
• High surge capability enables reliable protection against high-energy transients.
• Increases the reliability and lifespan of electronic equipment by mitigating the effects of transient voltage events.

Additional Details

The SMBJ18CA-M3/5B has a standoff voltage of 18V and a peak pulse power of 600W. It is RoHS compliant and halogen-free. The device operates over a wide temperature range, making it suitable for various environments. The bidirectional configuration provides protection for AC circuits or DC circuits where reverse polarity transients may occur. Its compact SMB package allows for efficient board space utilization.

The device's glass-passivated junction contributes to its high reliability and stable electrical characteristics. The CA suffix indicates that it is a bidirectional TVS diode. The M3/5B suffix indicates specific packaging and material requirements, further ensuring quality and traceability.