1N5955PE3/TR12

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Diodes – Zener – Single have wide range applications and the 1N5955PE3/TR12 is a typical example that serves multiple functions. A Zener diode operates in a reverse-voltage breakdown mode, wherein an applied reverse voltage exceeds the breakdown voltage during which the current flow sharply rises and surge of forward voltage voltage occurs. It can be used as a voltage regulator, surge suppressor, voltage reference, and dynamic resistance etc. This article aims to visualize the application field and working principle of the 1N5955PE3/TR12.

Application Field

The main application fields of 1N5955PE3/TR12 are:

• Surge Suppression: The 1N5955PE3/TR12 can be used to protect downstream components from transient voltages and overcurrent conditions along with the help of resistors known as snubbers. The clamps the voltage to the rated voltage by absorbing the energy of the surge.
• Voltage Regulation: It is primarily used in constant-voltage applications such as regulating a power supply, designing a voltage reference, or clamping a signal.
• Switching regulation: We can employ a Zener diode in combination with SCRs and transistors as it ensures precise control of the signal.

Working Principle

The 1N5955PE3/TR12 is a low-power switching type Zener diode. It is a two-terminal semiconductor device which offers a precise reverse breakdown voltage over a wide range of temperatures and current variations. It works with a three-terminal device found in power supply circuits to provide custom voltage regulation.

The Zener diode operates in a breakdown region when an applied reverse voltage exceeds the breakdown voltage of the device in the process of operation. This is when the current flow sharply rises and a surge of forward voltage occurs. The voltage difference between the diode and the source indicates the dynamic resistance properties of the device. This can be used to tailor the load and reverse current to the zener, by adjusting the load resistance. With this feature, it can be used in constant voltage applications, thus being suitable for voltage regulation, surge protection, and signal clamping.

The rated voltage of 1N5955PE3/TR12 is 3V and the maximum power dissipation is 500 mW. It is a 2-pin SOD-323 diode which makes it suitable for usage in high frequencies and as it is quite small in size, we can use it in a variety of devices depending on the required application. It is suitable for operating temperatures -55°C – +150°C.

Conclusion

To conclude, 1N5955PE3/TR12 is a 3V rated, 500 mW power, two-pin SOD-323 diode which can be used in many applications due to its high frequency operation ability and small size. It mainly finds its usage in surge suppression, voltage regulation, and switching regulation. When subjected to reverse voltage, it goes into breakdown mode, wherein current flow sharply rises and a surge of forward voltage occurs. It is suitable for temperatures –55°C – +150°C and is a reliable device for voltage regulation.

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