3SMC90CA TR13 Circuit Protection

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Transient voltage suppression ( TVS ) diodes are designed to provide protection against electrical overstress ( EOS ) such as electrostatic discharge ( ESD ), inductive glitches, and lightning. They are also used for EMI/RFI power-line filtering applications. The 3SMC90CA TR13 is a unidirectional transient voltage suppression ( TVS ) diode able to provide a clamping voltage avarage of 14V for 8/20μs surge pulse and a low leakage of 0.1μA .

The 3SMC90CA TR13 is typically used in power supplies, data line interfaces, high voltage rectifiers, medical equipment, lightning protection for telecom/data line, power line communication systems, and ESD protection. Its low leakage current is ideal for long-term supply voltage hold applications, such as power supplies, doorbells, and infotainment systems. In addition, the \'3SMC\' can be safely used without regard to polarity, and its wide operating temperature range gives it superior performance over temperature compared to its counterparts.

The working principle of the 3SMC90CA TR13 is based on semiconductor physics. It essentially consists of a junction diode connected in series with a MOSFET. When the voltage across the diode exceeds the threshold voltage, the diode begins to conduct current, the MOSFET acts as an impedance, reducing the current flow through the diode. This reduces the overshoot of the surge pulses, thus protecting the protected circuit from damage. The diode also serves to limit the amount of current that can flow through the system during high-surge events.

In addition, the 3SMC90CA TR13 offers contact protection and secondary protection. Contact protection involves a symmetrical layout of the anode and cathode which prevents shortcircuit and introduces no additional weight to the protected circuit. Secondary protection comes in the form of thermal stress minimization for the circuit caused by overvoltage events. This is achieved through the use of a reverse-biased diode inversion layer to dissipate thermal energy, thus reducing electrical stress to the protected device.

In summary, the 3SMC90CA TR13 is a unidirectional transient voltage suppression ( TVS ) diode able to provide protection against overvoltage events. Its low leakage current is suitable for long-term supply voltage hold applications, and its contact protection and secondary protection capabilities make it suitable for a wide range of applications. It is simple design and operation makes it easy to use and maintain.

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