CDLL4903

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The CDLL4903 Zener diode is a single 5.6 V Zener diode. It is a commonly used device in a wide range of applications, including power supply regulation, peripheral circuit protection, and surge protection. This device works by allowing current to flow through it in one direction and blocking current in the other direction. The working principle of the diode involves using an electric field to create a barrier to the current flow in reverse direction.The CDLL4903 can be used in applications that require low-voltage, high-current protection, such as TV and computer protection circuits, power supply over-voltage protection, DC-DC converter over-voltage protection, automotive electronics over-voltage protection, and more. It is suitable for a range of operating temperatures, from -65℃ to 150℃ and a wide range of power ratings, from 1/4W to 5W. The diode has a standard 5.6V Zener voltage and a minimum 6.2V breakdown voltage.The primary principle of operation of a Zener diode is the Zener effect. Zener diodes are designed to conduct in reverse polarity when a certain breakdown voltage is exceed. The breakdown happens due to the strong electric field within the diode. When the applied voltage exceeds the breakdown voltage, electricity starts to rapidly flow through the diode in reverse direction. This process is known as Zener breakdown.When a current flows through the Zener diode, it creates a voltage drop, which depends on its current-voltage characteristic. This characteristic is also known as its Zener knee. The Zener knee is where the Zener diode\'s breakdown voltage is reached, and the current begins to flow in reverse direction. By controlling the voltage at which this breakdown occurs, it is possible to regulate the flow of current through the diode.The reverse breakdown voltage of the CDLL4903 is 5.6V, and it has a maximum reverse voltage of 8V. It has a very low forward voltage drop of only 0.2V. Additionally, the low reverse leakage of the device enables it to work very efficiently in high-current applications. This Zener diode also has a relatively low thermal resistance, which allows it to operate at higher temperatures without significantly increasing its power dissipation. The low thermal resistance also makes it ideal for high-current applications requiring precise regulation.In summary, the CDLL4903 is a commonly used Zener diode that has a wide range of applications, including power supply regulation, peripheral circuit protection, and surge protection. It has an efficient reverse leakage, low voltage drop, and low thermal resistance, making it suitable for high-current applications. The operating temperature range is from -65℃ to 150℃ and the power rating range is from 1/4W to 5W.

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