The SM4T28AY is a high-performance transient voltage suppressor (TVS) diode from STMicroelectronics, designed to protect sensitive electronic equipment from voltage transients induced by system inductance, lightning, and other transient voltage events. This robust diode is part of ST's Transil™ series, which is renowned for its ability to safeguard circuits by clamping unwanted high-voltage spikes to a safe threshold.

Key Features

• Stand-off Voltage: The SM4T28AY offers a stand-off voltage of 28V, making it suitable for a range of applications that require protection against specific voltage thresholds.
• Peak Pulse Power: It can handle peak pulse power dissipation of 400W (10/1000μs), ensuring effective protection against high energy transients.
• Low Clamping Voltage: The device has a low clamping voltage relative to its stand-off voltage, which minimizes stress on the protected component during a transient event.
• Fast Response Time: The diode responds in less than a picosecond from 0V to BV min, providing immediate protection upon detection of a transient voltage.
• Operating Temperature Range: The SM4T28AY operates effectively across a wide temperature range from -55°C to +150°C, ensuring reliability in extreme conditions.

Applications

The SM4T28AY is ideal for protecting sensitive electronics in a variety of applications, including:

• Industrial systems
• Consumer electronics
• Automotive electronics
• Telecommunication devices
• Power supply protection
• Computer systems

Quality and Reliability

STMicroelectronics is committed to providing products that meet the highest standards of quality and reliability. The SM4T28AY is manufactured to stringent specifications, and its performance is rigorously tested to ensure that it meets the needs of even the most demanding applications.