SMDA15-6/TR13

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TVS - Diodes: SMDA15-6/TR13 Application Field and Working Principle

TVS (transient voltage suppressors) diodes, also called Special Purpose Diodes, are used in electronic circuits and systems to protect them from overvoltage and surges that can be caused by electrostatic discharge or lightning. The SMDA15-6/TR13 is an example of such a diode, a chip form-factor diode specifically designed to provide a low capacitance, low clamping voltage, and fast response time for sensitive circuits.

The SMDA15-6/TR13 is a surface-mount Uni-directional Transient Voltage Suppressor diode optimized for ESD, EFT, and surge protection in demanding high-speed, low voltage signal paths. It is specifically manufactured to provide protection against ESD, EFT or lightning surge events for up to 1,500W, up to 100V, and up to 8A. The device features a low capacitance of 0.4pF when biased at 5V, and it has a response time of less than 1nS when subject to 8/20μS waveforms.

The application field of the SMDA15-6/TR13 is quite wide. It can be used for applications where high ESD protection is needed in sensitive electronics and signal processing systems, such as in consumer electronics, communication systems, industrial equipment, automotive electronics, lighting systems, as well as medical and military devices. In addition, it can also be used in high-frequency signal paths like 40/100G Ethernet, USB 3.0, and high-frequency digital transmission, for which it provides a good level of protection without degrading signal quality.

The working principle of the SMDA15-6/TR13 is fairly simple. When a high-voltage transient signal is applied, the diode starts to conduct, and this causes its resistance to decrease. This in turn causes the current to flow through the diode, thus reducing the voltage on the device side, and eventually clamping it to the diode’s rated voltage value. When the voltage transient passes, the diode returns to its original state and stops conducting.

To summarize, the SMDA15-6/TR13 is an example of a TVS diode, specifically designed to provide a low capacitance, low clamping voltage, and fast response time. Its application field is very wide, including consumer electronics, communication systems, industrial equipment, automotive electronics, lighting systems, medical, and military devices. Its working principle is that it clamps the voltage to its rated value in order to protect sensitive electronic circuits and systems from surges and overvoltage.

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