STMicroelectronics 1-Element Bi-Directional TVS Diode 400 W, Surface Mount DO-214 Package SMAJ70CA-TR

The STMicroelectronics SMAJ70CA-TR is a 1-element, bi-directional Transient Voltage Suppression (TVS) diode designed to provide efficient protection for sensitive electronic components from voltage spikes and surges. Packaged in a surface mount DO-214 form factor, this diode delivers a high peak pulse power dissipation of 400 watts, making it suitable for demanding industrial, commercial, and automotive applications.

Its bi-directional configuration allows it to handle transient voltages from both positive and negative directions, making it ideal for AC and DC power protection circuits. The device features a minimum breakdown voltage of 77.8 volts and a maximum reverse stand-off voltage of 70 volts, ensuring reliable voltage clamping with a maximum clamping voltage of 146 volts to safely clamp high-voltage spikes.

The SMAJ70CA-TR supports a robust maximum peak pulse current of 16 amperes, designed to absorb significant transient energy without damage. It handles operating temperatures between -55°C and 150°C, enabling functionality in extreme temperature environments commonly encountered in industrial and automotive sectors.

With compact dimensions of 4.6 mm length, 2.9 mm width, and 2.45 mm height, this TVS diode fits onto high-density PCBs, offering protection without compromising board space. Its low maximum reverse leakage current of just 1 microampere helps maintain circuit efficiency by reducing leakage losses.

This product is a member of the trusted SMAJxxCA series by STMicroelectronics, ensuring consistency and quality for transient voltage suppression needs. The diode is surface mountable for automated placement and manufacturing efficiency.

Common applications include protecting power supplies, telecommunications equipment, automotive electronics, and consumer devices from damaging voltage transients caused by lightning, inductive load switching, or electrostatic discharge.

Single-element diode configuration for precise transient protection. Bi-directional operation for AC and DC voltage spike suppression. 400 W peak pulse power dissipation for high transient energy handling. Surface mount DO-214 package for compact PCB footprint.

Wide operating temperature range from -55°C to 150°C. Low reverse leakage current to improve circuit efficiency. Compact dimensions: 4.6 x 2.9 x 2.45 mm. Member of SMAJxxCA series ensuring reliability and quality. Protects electronics in industrial, automotive, and commercial environments.

Explore more STMicroelectronics TVS Diode solutions and industrial semiconductor products in the EnvMart catalog to enhance your design and protection strategies.