TPSMC12A

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In the electronics safety arena, TVS (Transient Voltage Suppression) diodes play a major role. These components are designed to protect sensitive circuit elements from destructive transient events, like electrostatic discharge (ESD) and electrical overstress (EOS). In order to achieve its function, TVS diodes require an understanding of the device application field and their working principles. This is where the TPSMC12A comes in.

The TPSMC12A is especially designed to provide voltage protection for portable electronic devices. This type of diode consists of a Zener diode and a fast-acting avalanche rating (MARx) in a single, SOD-523 package. It is an excellent solution for mitigating severe transient overvoltage events that applications with very small form factors.

When connected in series with a device, the TPSMC12A monitors the supply and signal lines for transients. It consists of a highly resistive Shottky (exhibited by its low clamping voltage) diode that is connected in parallel with an Avalanche breakdown diode. When the peak pulse voltage level of a transient goes above a certain voltage level, known as the trigger voltage (Vbr), the Avalanche diode is activated. This shunts the majority of the energy away while the Shottky diode bleeds off any remaining current.

The TPSMC12A is designed to be robust and reliable. It has an operating temperature capable of -55°C to +125°C, with a peak reverse self-leakage current of 80µA. At breakdown, its typical avalanche energy is 130mJ. As it is compliant to RoHS standards, this makes it perfect for use in consumer electronics, telecom, automotive and other applications.

The device has a Vbr of 8-24V and 8.5µA of Ibr with stand-offs ranging from 12-19V. It is capable of clamping at least 24A during a surge from 8/20µs. The peak 30000A pulse of a 1000µs waveform is 12V. These are the basic characteristics of the TPSMC12A.

Overall, the TPSMC12A is designed to provide reliable voltage protection in portable electronic devices. Its combination of a Zener diode, Silicon diode and Avalanche diode ensures efficient protection against transient overvoltages and ESD. Its compact design and excellent temperature range make it a perfect fit for applications with small form factors. As this device is RoHS compliant, many applications are now adopting its use in their products for superior protection.

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