The SM4T39AY is a high-quality Transil™ diode from STMicroelectronics, designed to provide state-of-the-art transient voltage surge protection for sensitive electronic components. This robust diode is a part of STMicroelectronics' commitment to offering advanced circuit protection solutions that cater to a wide range of applications, including consumer electronics, automotive systems, and industrial equipment.

Key Features

• Stand-off Voltage: The SM4T39AY features a stand-off voltage of 33.3V, making it suitable for protecting circuits with a working voltage up to this level.
• Peak Pulse Power Dissipation: With an impressive peak pulse power dissipation of 400W (10/1000μs surge waveform), this diode can effectively handle significant transient power spikes, ensuring the safety and reliability of electronic systems.
• Low Leakage Current: The low leakage current of the SM4T39AY minimizes power loss when the diode is in its standby state, contributing to the overall energy efficiency of the system.
• High Surge Capability: The device is designed to withstand high surge events, providing reliable protection against voltage transients induced by lightning, inductive load switching, and other surge sources.
• Fast Response Time: The Transil™ diode offers a fast response time to transient over-voltages, which is crucial for protecting sensitive electronic components from immediate damage.

Applications

The SM4T39AY is versatile and can be used in a variety of applications, including:

• Power supply protection
• AC/DC applications
• Telecommunication systems
• Computers and consumer electronics
• Automotive electronics
• Industrial electronics

Quality and Reliability

STMicroelectronics ensures that the SM4T39AY meets the highest quality and reliability standards. The device is RoHS compliant and adheres to international safety certifications. This commitment to quality guarantees that the SM4T39AY will perform reliably in even the most demanding environments, providing peace of mind to designers and engineers.