Taiwan Semiconductor 1-Element Uni-Directional TVS Diode 1.5 kW, 2-Pin DO-214 SMCJ43A

Taiwan Semiconductor SMCJ43A is a high-performance 1-element uni-directional transient voltage suppressor (TVS) diode designed for surface mounting on printed circuit boards. It provides superior protection against voltage spikes and transient surges up to 1.5 kW peak pulse power, ensuring electronic component reliability in demanding environments.

This TVS diode features a glass-passivated junction and a 2-pin DO-214 package that delivers excellent clamping capability with fast response. It supports a minimum breakdown voltage (Vbr) of 47.8 volts and withstands a maximum reverse stand-off voltage (Vwm) of 43 volts, making it ideal for suppressing transient overvoltages.

The diode operates effectively in a wide temperature range from -55°C to 150°C, suitable for harsh industrial and commercial applications. Its compact dimensions of 7.15 mm length, 6.25 mm width, and 2.75 mm height allow easy integration in tight PCB layouts.

With a peak pulse current (Ippm) rating of 21.6 amps and a clamping voltage (Vc) of 69.4 volts, the SMCJ43A offers reliable surge protection and low-leakage current (5 μA max), enhancing circuit longevity. It is free from automotive standard compliance requirements but meets Federal Bureau of Investigation (FBI) approval criteria.

Typical use cases include transient suppression in power management circuits, telecommunications equipment, industrial controls, and consumer electronics protection. Its surface-mount design facilitates automated assembly and improved production efficiency.

Single-element diode configuration for efficient protection. Uni-directional design ensures controlled voltage clamping. Peak pulse power dissipation of 1.5 kW offers robust surge handling. Compact DO-214 surface-mount package optimized for PCB applications.

Operates reliably between -55°C to 150°C temperature range. Minimum breakdown voltage of 47.8 volts and maximum reverse stand-off voltage of 43 volts. Fast response time with low incremental surge resistance. Maximum peak pulse current rating of 21.6 amps ensures effective transient suppression.

Dimensions: length 7.15 mm, width 6.25 mm, height 2.75 mm for efficient mounting. Applications include protection in industrial, telecommunications, automotive, and consumer electronics circuits.

Browse EnvMart’s Electronics & Electricals category for a wide range of semiconductor components including TVS Diodes, diodes, and power management ICs to support your industrial and commercial designs.