The SM4T12C from STMicroelectronics is a robust Transil™ transient voltage suppression (TVS) diode, designed to protect sensitive electronic equipment from voltage transients induced by load dump and other transient voltage events. It is a part of the SM4T series, known for their high surge capability and fast response time, ensuring reliable protection for a variety of applications.

Key Features

• Stand-off Voltage: The device has a stand-off voltage of 12V, which is the maximum reverse voltage that can be applied without causing a significant increase in leakage current.
• Peak Pulse Power: It offers a peak pulse power dissipation of 400W (10/1000µs surge), allowing it to handle significant power surges without damage.
• Low Clamping Voltage: The SM4T12C features a low clamping voltage, which ensures that the protected component sees a reduced stress voltage during transient conditions.
• Fast Response Time: Its response time is typically less than 1 picosecond from 0V to BV min, providing immediate protection against voltage spikes.
• Low Leakage Current: The device maintains a low leakage current, preserving energy and ensuring minimal impact on the operation of the protected circuit.

Applications

STMicroelectronics' SM4T12C is suitable for a broad range of applications where transient voltage protection is critical. These include:

• Automotive systems
• Industrial applications
• Power supply protection
• Telecommunications systems
• Consumer electronics

Package and Compliance

The SM4T12C is available in an SMA package, which is compact and suitable for automated pick and place manufacturing processes. It complies with the RoHS directive and is certified by industry standards for safety and performance.

Conclusion

With its combination of high surge capability, fast response time, and low clamping voltage, the SM4T12C TVS diode from STMicroelectronics offers excellent transient voltage protection for sensitive circuits. Its robust design and compliance with industry standards make it a reliable choice for engineers looking to safeguard their electronic designs from voltage transients.