BZX84C27-TP

Diodes - Zener - Single

The BZX84C27-TP is a 3.2 volt Zener diode. It is designed to work as a voltage regulator or shunting device, providing a regulated voltage level in excess of 12 volts. The device is designed to provide a regulated voltage level while dealing with large, fast transient changes in supply voltages.

Application Field

The BZX84C27-TP finds use in a variety of applications requiring a regulated input voltage. The device has been used mainly in power supplies and audio amplifier applications. It is also used for voltage clamping and for noise suppression.

Working Principle

The BZX84C27-TP is based on a Zener diode. It does not require an external power source to function, as it operates with the existing supply voltage on the circuit. The device has an integrated surface mount case which allows it to fit in small spaces, or otherwise inaccessible locations.

The working principle of a Zener diode is based on the principle of avalanche breakdown. When the reverse voltage applied across the p-n junction of the device exceeds its breakdown voltage, a heavy current begins to flow. Once this current reaches a certain level, the junction will maintain a constant voltage across itself. This is known as the Zener voltage.

The BZX84C27-TP has a Zener Voltage of 3.2 volts. This voltage is kept constant within a range of up to 12 volts on the input supply. In order for this to happen, a certain amount of current must be flowing through the diode. This current is called the test current, and is typically 40 mA for the BZX84C27-TP.

When used as a voltage regulator, the Zener diode can be connected between the output and ground. This will cause the output voltage to stay at the Zener voltage level unless the output voltage tries to exceed it. In that case, the Zener diode will act as a clamp and will limit the output voltage to the Zener voltage.

Conclusion

The BZX84C27-TP has a wide variety of applications, including power supplies and audio amplifier applications, as well as voltage clamping and noise suppression. Its working principle is based on the principle of avalanche breakdown and the Zener voltage level is kept constant within a range of up to 12 volts through the test current.