STMicroelectronics 1-Element Uni-Directional TVS Diode 400 W, 2-Pin DO-221 SMA4F33AY

STMicroelectronics SMA4F33AY 1-Element Uni-Directional TVS Diode delivers exceptional transient voltage suppression offering a peak pulse power dissipation rating of 400 W (10/1000 μs) and up to 2.5 kW (8/20 μs). This device employs planar technology to ensure compatibility with high-end automotive circuits that require low leakage current, high junction temperature capability, and long-term reliability.

Its surface mountable DO-221 package is flat and thin with dimensions of 4.6 mm length, 2.9 mm width, and 1.05 mm height, facilitating compact PCB layouts. The unidirectional diode configuration provides efficient protection against positive transient overvoltages, with a minimum breakdown voltage of 36.7 V and clamping voltage of 69.7 V.

This TVS Diode operates effectively across a wide temperature range from -55°C to 175°C, assuring robustness in varied industrial and automotive environments. It supports peak pulse current capability of 33 A, while maintaining a low maximum reverse leakage current of 1 μA. The device also meets the automotive AEC-Q101 standard underscoring its quality for automotive system applications.

Lead finishing with matte tin plating enhances solderability and corrosion protection, making it suitable for demanding manufacturing processes. The SMA4F33AY device is designed to protect sensitive electronic circuits from surges, transient voltage, and electrostatic discharge, ensuring device longevity and system stability.

This diode is ideally used in industrial electronics, automotive electronic protection systems, telecommunication equipment, and other high-reliability electronics requiring transient voltage suppression.

Designed for surface mount applications with unidirectional diode configuration. Minimum breakdown voltage of 36.7 V ensures reliable voltage clamping. Operational temperature range from -55°C to 175°C for demanding environments.

Low leakage current of 1 μA enhances circuit stability and efficiency. Automotive standard AEC-Q101 compliant for high reliability applications. Compact dimensions of 4.6 mm length, 2.9 mm width, and 1.05 mm height enable easy PCB integration.

Matte tin plated leads provide effective solderability and corrosion resistance. Capable of handling peak pulse current of 33 A ensuring surge resilience. Flat, thin package supports thermal management up to 200 W at maximum junction temperature.

Protects sensitive circuits against electrostatic discharge and voltage spikes. Discover more high-quality electronic components by exploring the Electronics & Electricals category on EnvMart for reliable semiconductor solutions.