CDLL4620

Diodes - Zener - Single

CDLL4620 is a single-junction Zener diode with a nominal breakdown voltage of 4.6V. It has a wide operating temperature range, from -65°C to +175°C, making it suitable for a variety of applications.The diode is fabricated from a silicon substrate and consists of two heavily P-doped regions (anode and cathode) separated by a lightly doped N-type region. The PN junction between the two P-doped regions is a Zener diode, which can be used to regulate a voltage source or to provide protection from over-voltage conditions.

Application Field of CDLL4620

CDLL4620 is suitable for a variety of applications, including regulated DC power supplies, voltage reference circuits, and EMI/RFI suppression. It can also be used to provide over-current protection in circuit boards and other electronic equipment. Additionally, the device can be used in automotive and industrial applications, as well as in military and aerospace systems.

Working Principle of CDLL4620

The working principle of the CDLL4620 is based on the Zener effect, which is the ability of a reverse-biased PN junction diode to conduct current at a predetermined voltage level. When the anode-cathode voltage exceeds the breakdown voltage of the diode, the nonlinear behavior of the device causes the current flow to increase. This excess current flow is known as the "Zener effect" and is used to regulate the input voltage of the circuit.

In addition to the Zener effect, the device also has a "body effect" which helps to regulate the diode\'s breakdown voltage. The body effect occurs when the diode is inversely biased and the electrical field created between the two electrodes causes the breakdown voltage to increase. This increase in the breakdown voltage helps to keep the voltage of the device within its specified limits.

The device also has a reverse bias breakdown voltage temperature coefficient (VTC) which helps to maintain the breakdown voltage over a large temperature range. The coefficient is specified as +2.9mV/°C, which means that the breakdown voltage of the device will increase by 2.9mV for every °C rise in temperature.

Finally, the device also has a Dynamic Resistance (RZ) which helps to maintain the voltage within its specified limits. The device\'s Dynamic Resistance is specified as 16ohms, which means that the resistance of the device will increase as the current through it increases. This helps to regulate the current in the circuit and provides protection against overvoltage conditions.

Conclusion

In conclusion, the CDLL4620 is a single-junction Zener diode with a nominal breakdown voltage of 4.6V and a wide operating temperature range. It has several features, including the Zener effect, the body effect, and the VTC and RZ parameters, which help to make it suitable for a variety of applications. By utilizing the Zener effect, it is able to provide voltage regulation and protection from over-voltage conditions.