STMicroelectronics 1-Element Bi-Directional TVS Diode, 400 W, 2-Pin DO-214 SM4T14CAY

STMicroelectronics SM4T14CAY is a 1-element bi-directional transient voltage suppressor (TVS) diode designed for automotive and industrial surge protection applications. It features a robust 400-watt peak pulse power rating within a compact and reliable 2-pin DO-214AC (SMA) surface mount package. The diode provides effective protection of sensitive electronic circuits by clamping voltage surges caused by load dumps, electrostatic discharges, and other transient voltage events.

The device is engineered to meet automotive industry requirements and is qualified under the AEC-Q101 standard, ensuring durability and performance in harsh environments. It operates over a wide temperature range from -55°C to 150°C, making it suitable for under-hood automotive applications and other demanding industrial settings.

With a minimum breakdown voltage of 13.3 V, maximum reverse stand-off voltage of 12 V, and a clamping voltage of 25.3 V, the SM4T14CAY is ideal for protecting circuits exposed to transient surges up to 91 A peak pulse current. The low maximum reverse leakage current of 1 μA minimizes power loss and standby heat generation.

This transient voltage suppressor is constructed as a single diode element with bi-directional protection, effectively handling surges from both positive and negative polarity. Its compact size (4.6 mm length, 2.9 mm width, 2.45 mm height) and surface mount design support high-density PCB layouts.

Typical applications include automotive electronic modules, industrial control systems, telecommunications infrastructure, and any equipment requiring stringent protection against transient voltage spikes defined by ISO 7637-2 and ISO 10605 standards.

Contains a single diode element with bi-directional protection. Peak pulse power dissipation of 400 W supports robust surge tolerance. Wide operating temperature range from -55°C to 150°C enables versatile use. Meets automotive standard AEC-Q101 for high reliability.

Compact DO-214AC (SMA) surface mount package facilitates integration. Minimum breakdown voltage of 13.3 V and maximum stand-off voltage of 12 V. Maximum peak pulse current of 91 A for strong transient handling. Low maximum reverse leakage current of 1 μA reduces power loss.

This STMicroelectronics SM4T14CAY TVS diode is part of the SM4TxxCAY series, which provides reliable surge protection for a variety of sensitive electronics. EnvMart customers seeking high-quality transient voltage suppressors for automotive or industrial use will find it well suited for safeguarding circuits against voltage spikes and electrostatic discharge.

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