SMCJ16CA-Q Circuit Protection

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The SMCJ16CA-Q from ON Semiconductor is a three-terminal, bidirectional surface mount TVS (transient voltage suppressor) diode designed to provide protection against ESD (electrostatic discharge), EFT (electrical fast transient) and lightning induced transient voltage. The device is intended to protect sensitive components from voltage transients generated by lightning, inductive load switching, static discharge or other asynchronous transients. It is available in a 4-pin SOT-23 package.

The SMCJ16CA-Q is a bi-directional diode designed to provide protection against changes in voltage between two terminals, such as those caused by lightning or ESD. It has an internal junction designed to absorb any over-voltage and prevent it from reaching the protected device. It features a low clamped voltage with low leakage current, and is designed to shunt transient voltage spikes up to 16 V. The device can hold up to 1 A of continuous current. Its design makes it ideal for applications such as BASs (building automation systems), automotive, telecom equipment, medical equipment, and consumer electronics.

The working principle of the TVS diode is quite simple. It is essentially a reverse-biased semiconductor with a very low reverse breakdown voltage. The device is placed between two power lines in order to reduce voltage transients that can result from electrical influences such as ESD, lightning, and inductive load switching. When an over-voltage condition occurs, the diode conducts and provides a path to ground to reduce the voltage to a safe level. This prevents damage to sensitive components and provides an efficient solution for protecting them.

The SMCJ16CA-Q is ideal for a variety of applications that require protection against lightning, ESD, and other electrical transients. Its low leakage current, low clamped voltage, and ability to withstand 1 A of continuous current makes it a reliable solution for those looking to protect their sensitive devices from voltage transients.

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