STMicroelectronics SM15T39A Transil™ TVS Diode

The SM15T39A is a high-performance Transil™ transient voltage suppressor (TVS) diode designed by STMicroelectronics to protect sensitive electronic equipment from voltage transients induced by load dump and other transient voltage events. This TVS diode is optimized for use in a wide range of applications, including automotive systems, industrial platforms, and consumer electronics, where reliable protection against voltage spikes is critical.

Key Features

• Stand-off Voltage: The SM15T39A has a stand-off voltage of 33.3V, making it suitable for a range of applications that require a specific operating voltage level.
• Peak Pulse Power: It offers a peak pulse power dissipation of 1500W (10/1000μs), providing robust protection against surges and ensuring the longevity of the protected device.
• Clamping Voltage: During a transient event, the clamping voltage is a critical parameter. The SM15T39A features a low clamping voltage, minimizing stress on the protected circuit.
• Package: Packaged in a compact SMB (DO-214AA) footprint, the SM15T39A is designed for surface-mount applications and is compatible with standard PCB layouts.
• Temperature Range: The device operates within a junction temperature range of -55°C to +150°C, ensuring reliable performance across a wide range of environmental conditions.
• Compliance: It is compliant with industrial standards such as ISO 7637-2 and ISO 16750-2, which are particularly relevant for automotive applications.

Applications

The SM15T39A is ideal for protecting sensitive circuits in various applications, including:

• Automotive control units
• Power supply lines
• Industrial systems
• Microcontroller protection
• Portable devices

With its combination of high peak pulse power capability, low clamping voltage, and compact design, the SM15T39A from STMicroelectronics is an excellent choice for designers looking to enhance the reliability and durability of their electronic systems against transient voltage events.