CDLL937

CDLL937 Application Field and Working Principle

CDLL937 is a kind of zener diode. But what exactly is a zener diode and what are its application fields and working principles?

What is a Zener Diode?

A Zener diode is a type of diode that allows electricity to flow in the opposite direction than a normal diode, similar to avalanche diodes, when the reverse voltage it is exposed to reaches its specified breakdown voltage, Vz. When this happens the current through the diode exponentially increases with the voltage across it increasing until reaching the saturation current, Is. The other advantage of the Zener diode is its ability to maintain a stable voltage across its terminals.

What are its Application Fields?

Zener diodes have a variety of application fields. One of its most common use is in voltage regulation. It can regulate a voltage against fluctuations from a source by connecting it in series to the load and using it as a voltage limit where the voltage can\'t rise to a higher value until the current the source can supply is sufficient for the load.

Other important application fields of zener diodes are in protection circuits, over-voltage protection, reverse polarity protection and EMI/RFI suppression, among other applications. It can also be used as a solid-state switch or voltage reference and for signal clipping.

What is the Working Principle of the CDLL937?

The CDLL937 is a high-voltage and low current Zener diode, specifically designed for electrical noise suppression. It has a maximum reverse voltage of 9.3 V and a maximum peak reverse current of 500 mA. This Zener diode is also very heat and shock resistant.

The CDLL937 operates with a reverse voltage when an external voltage exceeds its breakdown voltage level. When the external voltage of a circuit connected to the CDLL937 reaches the breakdown voltage the current, at that moment, becomes close to the saturation flow rate, creating a stable reverse bias of the diode. At this point, the excess current is blocked by the diode and then redirected in the external circuit, allowing the voltage to not exceed the breakdown voltage level to protect the circuit from damage.

Conclusion

The CDLL937 Zener diode is a reliable component when it comes to electrical noise suppression and over-voltage protection. Its wide variety of applications and its reliable temperature range makes it the perfect component for many different uses and circuits.