Zener Diodes - Single BZD27C36PW

A Zener diode is a special type of semiconductor diode that uses a reversed bias voltage to allow reverse current to flow. Zener diodes are heavily used in power regulation and control applications. The BZD27C36PW is a single diode in a standard SOD-323F surface mount package. This semiconductor device has an operating temperature range of -55°C to +150°C, a maximum power dissipation of 500mW, and a maximum working voltage of 36V.

Application Field

The BZD27C36PW is optimized for use as a high quality voltage regulator. As a Zener reference diode, this device provides a stable reference voltage that can be used to create a fixed voltage source for any digital circuit. The BZD27C36PW is especially useful in power control systems because it provides the required protection against excessive voltage spikes and prevents possible damage to sensitive components.

The BZD27C36PW can also be used as a voltage regulator in battery charging systems and DC-DC converter applications. It provides reliable reverse-breakdown protection and provides excellent temperature stability and line regulation. This makes it an ideal choice for applications requiring good voltage regulation over a range of temperatures.

Working principle

The basic principle behind the BZD27C36PW is known as the Zener effect. This phenomenon was named after the researcher Clarence Zener, who discovered it in 1934. The Zener effect occurs when a reverse-biased voltage is applied to a diode.

When the applied voltage exceeds the threshold voltage (the Zener voltage), a very small reverse current known as the Zener current starts to flow through the diode. This Zener current is determined by the amount of reverse bias applied. The Zener voltage is determined by the amount of doping in the diode, so the higher the doping level, the higher the Zener voltage.

In a Zener diode, the Zener current flows in such a way that it maintains a constant voltage regardless of the changing load current or the changing temperature conditions. This makes it ideal for applications in which precision voltage regulation is necessary. The BZD27C36PW, with its low operating voltage, low power dissipation, and high current rating, is well-suited for such applications.