STMicroelectronics Uni-Directional TVS Diode 400 W, Surface Mount DO-214 Package, 2-Pin SMAJ18A-TR

STMicroelectronics SMAJ18A-TR is a high-performance uni-directional Transient Voltage Suppressor (TVS) diode designed to protect sensitive electronic equipment from transient voltage spikes and electrostatic discharges. Housed in a surface-mount DO-214 package, this single-element device is ideal for preventing damage in industrial, electronic, and automotive circuits.

This TVS diode can dissipate up to 400 W peak pulse power, effectively safeguarding circuit components by clamping transient voltages to a safe level of 29.2 V. Its maximum reverse stand-off voltage of 18 V provides protection during normal operation, while its maximum peak pulse current rating of 13.7 A handles high-energy spikes efficiently.

Operating across a broad temperature range from -55°C to 150°C, the SMAJ18A-TR is suitable for harsh environments found in manufacturing, industrial control systems, and power electronics applications. Its compact dimensions (4.6 mm length, 2.9 mm width, and 2.25 mm height) enable space-saving PCB layouts.

The diode features a low maximum reverse leakage current of 1 μA, ensuring minimal current loss and energy efficiency. The product complies with standard electronic component packaging norms but does not carry specific automotive or other certifications.

Single-element diode configuration for precise transient voltage protection. Uni-directional protection ideal for voltage-sensitive electronic devices. High peak pulse power dissipation capability of 400 W. Surface mount DO-214 package for easy integration into PCB assemblies.

Wide operating temperature range from -55°C to 150°C enables versatile use. Efficient voltage clamping at 29.2 V across transient events. 18 V maximum reverse stand-off voltage for reliable standard operation. Peak pulse current handling of up to 13.7 A for surge robustness.

Compact physical size supports compact electronic designs. Low leakage current reduces energy consumption in protected circuits.

This TVS diode is a critical component in protecting electronic devices against transient voltage surges in industries including electronics manufacturing, industrial automation, HVAC control systems, and power supplies. Engineers and technicians rely on the SMAJ18A-TR for effective overvoltage protection in circuit design.

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