The SM4T47CAY from STMicroelectronics is a robust transient voltage suppression (TVS) diode, designed to protect sensitive electronic equipment from voltage transients induced by system inductive load switching and lightning surges. A part of the Transil™ series, this TVS diode offers a quick and reliable response to the fast-rising voltage spikes, which are common in modern electronic systems.

Key Features

• Stand-off Voltage: The device features a stand-off voltage of 47V, providing a margin of safety for electronic circuits that may experience high voltage transients.
• Peak Pulse Power: With a peak pulse power dissipation of 400W (10/1000µs), the SM4T47CAY is capable of handling significant energy associated with transient events.
• Low Clamping Voltage: The low clamping voltage ensures that the sensitive components downstream are well protected from overvoltage conditions.
• Fast Response Time: The diode's response time is virtually instantaneous (<1ps from 0V to BV min), providing immediate protection against voltage spikes.
• Package: Housed in an SMB (DO-214AA) package, the SM4T47CAY is designed for surface mount applications and is compatible with high-volume electronic assembly processes.

Applications

The SM4T47CAY is ideal for protecting voltage-sensitive components in a variety of applications, including:

• Power supply devices
• Communication systems
• Automotive electronics
• Industrial control systems
• Consumer electronics

Reliability and Safety

STMicroelectronics is known for their commitment to reliability and the SM4T47CAY is no exception. It meets ISO 9001 and ISO 14001 standards, ensuring a high level of quality and environmental management in its production. Additionally, the device is RoHS compliant, minimizing the environmental impact by restricting the use of certain hazardous substances in its manufacture.