STMicroelectronics 1-Element Uni-Directional TVS Diode, 400 W Peak Pulse Power, 2-Pin SMA Flat SMA4F22A

STMicroelectronics SMA4F22A is a 1-element uni-directional transient voltage suppression (TVS) diode designed for protecting sensitive electronic circuits against transient surges and electrostatic discharge (ESD). This discrete semiconductor device is packaged in a compact 2-pin SMA flat surface mount package, ideal for space-constrained PCB assembly in industrial, automotive, telecommunications, and consumer electronics applications.

With a peak pulse power dissipation of 400 W at 10/1000 μs waveform and up to 2.5 kW at 8/20 μs, the SMA4F22A efficiently clamps voltage spikes and protects downstream components. It exhibits a minimum breakdown voltage of 24.4 V and a maximum reverse stand-off voltage of 22 V, ensuring precise suppression within defined voltage limits.

The device maintains low leakage currents of 0.2 μA at 25 °C and no more than 1 μA at 85 °C, contributing to minimal power loss and enhanced performance. It can operate reliably over a wide temperature range from -55 °C to a maximum junction temperature of 175 °C, making it suitable for harsh environments.

The thin planar package is only 1.05 mm in height, with a length of 4.6 mm and a width of 2.9 mm, allowing for efficient use of PCB space. Matte tin plating on leads provides corrosion resistance and facilitates soldering processes during manufacturing.

This product is manufactured in Morocco and features planar technology to provide long-term reliability and thermal stability. Its robust ESD protection and a maximum peak pulse current of 48 A make it a reliable choice for transient voltage suppression in industrial, semiconductor, electronics manufacturing, and telecommunications sectors.

Provides transient voltage suppression to protect sensitive circuits from surges. High peak pulse power ratings ensure effective clamping during voltage spikes. Low leakage current improves circuit efficiency and reduces power consumption.

Compact SMA flat package fits well in limited PCB area applications. Wide operating temperature range supports use in industrial and automotive environments. Lead finishing with matte tin plating ensures good solderability and corrosion resistance.

Designed for surface mount technology with 2-pin configuration for easy PCB integration. Manufactured under quality standards with no additional certifications stated.

This TVS Diode is ideal for use in protection circuits in power supplies, telecom equipment, industrial control systems, and automotive electronics. Browse our collection of semiconductor devices and electronic components from STMicroelectronics at EnvMart for reliable high-quality industrial grade products.