The SM15T39CAY is a robust Transil™ transient voltage suppressor (TVS) diode designed and manufactured by STMicroelectronics. This component is specifically engineered to protect sensitive electronic equipment from voltage transients induced by lightning and other transient voltage events. It is a bidirectional TVS diode, meaning it can provide protection in both directions, making it highly versatile for various applications.

Key Features

• Stand-off Voltage: The device has a stand-off voltage of 33.3V, which allows it to remain non-conductive under normal operating conditions until a threshold is exceeded.
• Peak Pulse Power: It offers a high peak pulse power dissipation rating of 1500W (10/1000μs), ensuring effective protection against energy spikes.
• Clamping Voltage: With a clamping voltage of 53.9V, the SM15T39CAY quickly reacts to surge events, clamping excess voltage and diverting it away from sensitive components.
• Low Leakage Current: The device features a low leakage current, minimizing power loss when the device is in standby mode.
• Package: Housed in an SMB (DO-214AA) package, the SM15T39CAY offers a compact footprint for space-constrained applications.

Applications

The SM15T39CAY is suitable for a broad range of applications where transient voltage protection is critical. It is commonly used in:

• Automotive systems
• Industrial electronics
• Power supply units
• Telecommunication systems
• Consumer electronics

Quality and Reliability

STMicroelectronics is renowned for its commitment to quality and reliability, and the SM15T39CAY is no exception. It is designed to meet rigorous industry standards, ensuring long-term reliability and performance in the most challenging environments. The device is RoHS compliant and adheres to ISO 9001 quality management system standards, providing users with confidence in its construction and capability to protect critical circuits.