CDLL5915D

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CDLL5915D diode belongs to Single Zener family and offers versatile applications including protection, regulation and circuit design. It exhibits a low total capacitance performance and an effective suppression of voltage transients. Available breakdown voltage ranges from 25 V to 90 V.

General features of the CDLL5915D diode include:

• Low total capacitance
• Very strong ESD protection
• High-temperature reverse voltage range
• Low maximum continuous leakage current
• Excellent stability at reverse voltages

Application fields of the CDLL5915D diode is quite wide and includes:

• Computer and peripheral board protection
• Automotive electronics
• Telecom equipment
• Home audio/video equipment
• Industrial controls
• Consumer electronics
• Portable devices
• Avionics

The working principle of the CDLL5915D diode is based on its Zener behavior. The diode uses the Zener effect to reduce the voltage rise time of an applied voltage lest the device be destroyed by a high voltage transient. The device consists of a pair of p-n junction diodes connected in series and forming a voltage divider. When the voltage is low, the junction between the two diodes is blocked, resulting in current flowing through the external circuit only and no current through the diode itself. However, when the applied voltage is above the Zener voltage, the diode’s reverse conduction capability becomes stronger, leading to current flowing across the diode’s junction and into the external circuit.

The Zener diode also has a normal reverse breakdown characteristic, meaning that when the reverse voltage applied on the device is above the Zener voltage, the current will continue to rise exponentially. This characteristic is also used for stabilizing the output of a power supply as it will naturally cut off any voltage spikes that exceed a certain level. It is also commonly used for protecting microelectronic power switches from electrostatic discharge.

The CDLL5915D diode is a reliable and versatile device for applications where strong ESD protection, good stability and high temperature reverse voltage range is needed. Its low total capacitance performance in combination with its effective suppression of voltage transients make it especially suitable for consumer and automotive electronics.

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