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Diodes - Zener - Single

The 1N5342AE3/TR13 is a medium-powered Zenner diode, specifically designed for use in any type of application that requires reverse voltage protection. It ensures that no reverse current is able to flow through the diode, and is ideal for high-side switching applications when a fast, reliable voltage protection needs to be provided. This diode is available in an SOT-23 package.

Application Field

The 1N5342AE3/TR13 diode is mainly used in voltage protection applications, such as in high-side switching. It can be used in any type of circuit that needs reverse voltage protection, such as power supplies, DC-DC converters, and motor controllers. It can also be used in automotive applications, where its low forward voltage drop of 0.35V provides additional protection from over-voltage spikes.

Working Principle

The 1N5342AE3/TR13 diode works by allowing current to pass through it in one direction and blocking current to flow in the opposite direction. This prevents the build up of any reverse voltage across the diode, thus providing voltage protection. When the voltage across the diode reaches a certain level, known as the Zener voltage, a small amount of current is allowed to flow back across the diode. This clamps the actual voltage at a value that is predetermined by the Zener breakdown voltage of the diode itself.

The 1N5342AE3/TR13 diode can effectively clamp voltages up to 5.1V, and has a reverse breakdown voltage of 5.0V with a 150mA DC test current. It also has a Zener impedance of 4.5 ohms, meaning it can handle relatively high power levels without any issues. Furthermore, this diode has a peak pulse current of 1 Amp, meaning it can handle any pulses of up to this level without concern.

Conclusion

The 1N5342AE3/TR13 diode is an excellent choice for any application that requires voltage protection, such as high-side switching and other smartphone and automotive applications. It is also a great option for project designs that need reverse voltage protection, due to its robust and reliable reverse breakdown voltage capabilities. Its low forward voltage helps eliminate any over-voltage spikes and its Zener impedance helps it handle relatively high power levels, making it an ideal choice for applications demanding reliable voltage protection.

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