NZX27A,133

Diodes - Zener - Single

The NZX27A,133 is a single Zener diode typically employed in power supplies and voltage regulation circuitry. This diode uses a reversed-biased semiconductor junction, which is designed to pass a current in one direction while blocking in the other.

Applications

The NZX27A,133 is typically used in applications requiring precise voltage regulation, such as in power supplies, clocks, and amplifiers. This diode is also used to create voltage dividers for voltage regulation in all manner of electronic circuits. It can be used as a voltage reference element in precision circuitry, and it is also used as a \'free-wheeling\' diode in circuits such as motor controllers, where it is often necessary to divert current around a system in order to protect components.

Working Principle

When a current is passed from the cathode side of the NZX27A,133 diode to the anode, the diode functions like a normal diode, blocking any current flowing in the opposite direction. When the reverse voltage applied through the diode reaches the Zener voltage (or \'threshold voltage\') of the diode, the diode allows a current to flow in the reverse direction, creating a path of least resistance. The breakdown voltage of the NZX27A,133 is measured at approximately 13.3 volts, and the Zener voltage remains constant beyond this level, regardless of the current passing through it. In this state, the diode stabilizes the voltage applied to a circuit, preventing it from rising above the Zener voltage.

Conclusion

The NZX27A,133 is a single Zener diode typically used for precise voltage regulation in power supplies, clocks and amplifiers, as well as for voltage reference elements. Utilizing a reversed-biased junction, this diode is designed to pass a current in one direction while blocking in the other. When a reverse voltage applied to the diode reaches its threshold value—13.3 volts in the case of the NZX27A,133—the diode will allow current to flow in the reverse direction, preventing the voltage from exceeding the threshold.