STMicroelectronics

SM6T22CAY

SM6T22CAY Description

The SM6T22CAY from STMicroelectronics is a high-performance bidirectional Zener-type TVS diode designed for robust transient voltage suppression in automotive and industrial applications. Part of the SM6TY, TRANSIL™ series, it features a 18.8V reverse standoff voltage (Typ) and a 20.9V minimum breakdown voltage, ensuring reliable protection against voltage spikes. With a clamping voltage of 30.6V at peak pulse current (Ipp) and a peak pulse power dissipation of 600W, it effectively safeguards sensitive electronics from ESD, lightning-induced surges, and other transient events. The device is AEC-Q101 qualified, making it ideal for automotive-grade applications.

SM6T22CAY Features

• Bidirectional Protection: Single-channel design for clamping both positive and negative transients.
• High Surge Handling: 102A peak pulse current (8/20µs) and 600W peak pulse power for robust surge suppression.
• Low Clamping Voltage: 30.6V max clamping voltage ensures minimal stress on protected circuits.
• Automotive Compliance: AEC-Q101 qualified and ROHS3/REACH compliant, suitable for harsh environments.
• Surface-Mount Package: SMB (DO-214AA) package with Tape & Reel (TR) packaging for automated assembly.
• Wide Operating Range: -55°C to +150°C junction temperature range for extreme conditions.

SM6T22CAY Applications

• Automotive Electronics: Protects ECUs, CAN buses, and infotainment systems from load dump and ISO 7637-2 transients.
• Industrial Systems: Safeguards PLC I/Os, sensors, and power supplies against inductive switching surges.
• Telecom/Networking: Shields RS-485, Ethernet, and PoE interfaces from ESD and lightning-induced surges.
• Consumer Electronics: Used in USB ports, HDMI lines, and battery charging circuits for transient suppression.

Conclusion of SM6T22CAY

The SM6T22CAY stands out as a high-reliability TVS diode with superior clamping performance, automotive-grade robustness, and bidirectional protection. Its low clamping voltage and high surge capability make it ideal for mission-critical applications where transient immunity is paramount. Whether in automotive, industrial, or telecom systems, this device ensures long-term durability and compliance with stringent industry standards.