1N5369B/TR8

A Zener diode is an electronic component that is used for voltage regulation. It is an electron tube with a specialised junction structure that makes it easier to control the reverse voltage. The 1N5369B/TR8 is an example from a series of Zener diodes by Onzumi semiconductors, they come packaged in a SOD-323F package — making it suitable for a wide range of applications.

The 1N5369B/TR8 Zener diode is a single type device designed to control the voltage in certain circuits. It is designed specifically for low power circuits requiring a reverse breakdown voltage range of 3.3V to 71V. It comes in two different versions to suit different applications — 200mW and 500mW. As a single diode configuration, it requires only two terminals to operate — an anode (positive) and a cathode (negative).

The device offers extremely reliable operation with high breakdown voltages, low reverse current and low capacitance. It is often used in applications such as voltage regulation, overvoltage protection and transient voltage suppression. It is also often used in automotive applications such as engine control systems, airbag deployment and collision avoidance systems.

The working principle of the 1N5369B/TR8 is that it behaves like a normal diode when forward biased — allowing current to flow from the anode to the cathode. However, the reverse voltage across the terminals exceeds the Breakdown Voltage (Vz) value, the Zener diode begins to conduct — clamping the voltage at Vz. This ensures the voltage across any other components in the circuit never rises above the Vz value. The device is primarily used in circuits where a stable voltage needs to be maintained.

In summary, the 1N5369B/TR8 is an example of a single Zener diode used for applications such as voltage regulation, overvoltage protection, and transient voltage suppression. It offers reliable operation across a wide range of applications, thanks to its low capacitance, low reverse current and high breakdown voltage. It is often used in both consumer electronics and automotive applications, such as engine control systems, airbag deployment and collision avoidance.