CDLL4118

The CDLL4118 series of Zener diodes are a single terminal device that can provide efficient, cost-effective protection against electrical transients. It offers a wide operating range with an effective reverse voltage range from 5V to 24V. Its features include a low turn-on voltage, low forward voltage drop, and fast recovery time from over-voltage protection. It is equipped with an on-chip surface mount Zener diode for reverse voltage protection and low power dissipation. The diode also offers built-in shielding to reduce electromagnetic interference.

The CDLL4118 series of Zener diodes are most commonly used in automotive and industrial applications. They are used to provide voltage buffering and spike protection in a variety of power control and sensor circuits. They are also used in data communications equipment, including digital instruments, computers, and other devices that require protection from over-voltages.

The working principle of the CDLL4118 series of Zener diode is based on a current limiting between its two terminals. When the forward voltage applied is greater than the static Zener voltage, a zener current will flow through the diode and the excess voltage is converted into heat energy. The power dissipation of the diode is taken into account when selecting its operating conditions. The reverse leakage current of the diode also helps to stabilize the voltage supply.

The CDLL4118 series of Zener diodes are usually used in single configurations, with a maximum rated voltage of 24V. When the diode is used in series with another voltage regulator, it helps provide a more reliable protection from over-voltage transients. When the current through it increases, it creates a junction potential that clamps the voltage between the terminals. This reduces the risk of high electromagnetic interference and also helps to protect sensitive components from over-voltage transients.

In summary, the CDLL4118 series of Zener diodes are an efficient, cost-effective way to protect sensitive components from over-voltage transients. With its rapid recovery time and small forward voltage drop, the diode is ideally suited for use in a variety of applications and provides a reliable way to guard against potential damage due to over-voltage protection.