STMicroelectronics

SM4T33CAY

SM4T33CAY Description

The SM4T33CAY is an automotive-grade transient voltage suppressor (TVS) diode designed and manufactured by STMicroelectronics. This device is part of the SM4TY, TRANSIL™ series and is specifically engineered to protect sensitive electronic circuits from voltage transients and electrostatic discharges. It features a bidirectional channel, allowing it to protect against both positive and negative voltage spikes. The SM4T33CAY is surface-mountable, making it ideal for space-constrained applications.

SM4T33CAY Features

• Voltage Ratings: The SM4T33CAY has a reverse standoff voltage of 28V and a maximum clamping voltage of 59V at a peak pulse current of 39A (8/20µs). It also has a minimum breakdown voltage of 31.1V, ensuring robust protection against voltage spikes.
• Power Handling: With a peak pulse power rating of 400W, the SM4T33CAY can handle high-energy transients without compromising its performance.
• Current Handling: The device can handle peak pulse currents of 39A (8/20µs) and 33A (10/1000µs), making it suitable for applications with high transient current demands.
• Mounting Type: The SM4T33CAY is designed for surface mount applications, which is ideal for space-constrained designs.
• Package: The device is available in a tape and reel (TR) packaging, which is suitable for automated assembly processes.
• Compliance: The SM4T33CAY is compliant with the RoHS3 directive and is classified as REACH unaffected, ensuring environmental and regulatory compliance.
• Moisture Sensitivity Level: With an MSL of 1 (Unlimited), the SM4T33CAY can be stored and used in a wide range of environmental conditions without the risk of moisture-related damage.

SM4T33CAY Applications

The SM4T33CAY is ideal for various automotive and industrial applications where voltage transient protection is crucial. Some specific use cases include:

• Automotive Electronics: Protecting automotive control units, sensors, and communication interfaces from voltage transients and electrostatic discharges.
• Industrial Control Systems: safeguarding PLCs, motor drives, and other control equipment from voltage spikes and surges.
• Telecommunications: protecting communication equipment from voltage transients and electrostatic discharges in harsh environments.
• Consumer Electronics: protecting portable devices and home appliances from voltage spikes and electrostatic discharges.

Conclusion of SM4T33CAY

The SM4T33CAY is a high-performance TVS diode that offers robust voltage transient protection for sensitive electronic circuits. Its automotive-grade design, bidirectional channel, and surface-mount packaging make it an ideal choice for a wide range of applications where voltage transient protection is critical. With its unique combination of voltage, current, and power ratings, the SM4T33CAY stands out as a reliable and efficient solution for protecting electronic systems from voltage transients and electrostatic discharges.