STMicroelectronics 1-Element Uni-Directional TVS Diode 400 W 2-Pin SMA Flat SMA4F20A

STMicroelectronics SMA4F20A is a uni-directional TVS diode designed for reliable protection against transient voltage surges in sensitive electronic circuits. Featuring a single element chip and a compact 2-pin SMA flat surface mount package, it provides a peak pulse power rating of 400 W for a pulse duration of 10/1000 μs and withstands up to 2.5 kW for 8/20 μs pulses.

The device offers a minimum breakdown voltage of 22.2 V and a maximum reverse stand-off voltage of 20 V, ensuring effective clamping at 42.8 V to safeguard circuits from damaging spikes. The diode is designed with low leakage currents (0.2 μA at 25 °C and 1 μA at 85 °C), making it suitable for high-end applications requiring minimal power loss and high stability.

Its flat and thin form factor (1.05 mm height) allows space-efficient mounting on PCBs, with dimensions of 4.6 mm length and 2.9 mm width. The device operates reliably across a wide temperature range from -55°C to 175°C, supporting harsh industrial environments.

Additional features include a peak pulse current capability of 54 A, matte tin lead plating for enhanced solderability, and compatibility with various industrial, laboratory, electronic manufacturing, and automotive surge protection applications (though automotive standard compliance is not specified).

This TVS Diode belongs to the SMA4FxxA series by STMicroelectronics and is manufactured in Morocco. Its robust construction and precise electrical parameters make it ideal for protecting telecommunications, power supplies, industrial automation systems, and other critical electronic equipment from electrostatic discharge (ESD) and transient voltage events.

Protects circuits from transient surges with 400 W peak pulse power rating. Uni-directional single element design for fast response and reliable protection. Surface mount SMA flat package enabling compact and efficient printed circuit board layouts.

Wide operating temperature range from -55°C to 175°C for industrial use. Low leakage current enhances circuit performance and energy efficiency. Matte tin lead finish ensures durability and ease of soldering. High peak pulse current rating of 54 A supports severe surge conditions.

Designed for long-term reliability and stability in high-end electronics. Explore a large selection of semiconductor protection components at EnvMart to find trusted devices like the STMicroelectronics SMA4F20A for your electronic protection needs.