CDLL5933B

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The CDLL5933B is one type of single Zener diodes. It is a series of Small Signal Zener Diodes of 3.2V to 75V Zener voltages, providing ESD protection and stable Zener voltage over a wide temperature range. It is performance-enhanced and offers a good ESD protection level.

The CDLL5933B is available in a SOT-23 surface-mount package and features enhanced Zener voltage regulation with an additional avalanche breakdown. It also has a low Zener impedance, rapid switching speed, and excellent stability with temperature. The series also offers a variety of voltage breakdowns from 3.2V to 75V.

Applications of CDLL5933B include ESD and surge protection, overvoltage protection, telecom equipment, diagnostics, Industrial processes, etc. This type of diode is mainly used in automotive and consumer electronics where reverse power input protection with high surge capability is desired.

The working principle of CDLL5933B is based on the two distinct operation modes: Zener and avalanche breakdown. During Zener breakdown, the voltage of the diode is determined by the amount of Zener voltage. Zener breakdown occurs when the reverse bias voltage across the diode reaches the Zener voltage, and current flows through the diode and its associated resistors. When the voltage is further increased and exceeds the breakdown voltage, avalanche breakdown occurs leading to a further increase in current. This increases the power dissipation of the diode and provides enhanced surge capability.

The CDLL5933B series features various Zener and avalanche breakdown voltages to meet various applications. It has a Zener impedance of up to 3kΩ, peak forward voltage of up to 5V, fast switch-on time and low leakage current to enable maximum efficiency. In addition, it has an ESD protection level of up to 8KV HBM that surpasses industry standards.

In summary, the CDLL5933B is a single Zener diode from the SOT-23 family which is usually used for ESD, surge, and overvoltage protection. It has fast switching speed, low leakage current, low Zener impedance, and excellent stability over temperature. The series offers a variety of breakdown voltages from 3.2V to 75V to meet various applications, and features an ESD protection level of 8KV HBM.

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