CDLL5919D

Series:	--
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	5.6V
Tolerance:	±1%
Power - Max:	1.25W
Impedance (Max) (Zzt):	2 Ohms
Current - Reverse Leakage @ Vr:	5µA @ 3V
Voltage - Forward (Vf) (Max) @ If:	1.2V @ 200mA
Operating Temperature:	-65°C ~ 175°C
Mounting Type:	Surface Mount
Package / Case:	DO-213AB, MELF
Supplier Device Package:	DO-213AB

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CDLL5919D Application Field and Working Principle

CDLL5919D, classified under diodes-zener-single, is a single, high-voltage, low-power, subminiature zener diode developed by EPC. This device provides an efficient way to regulate voltage, dissipate power and protect against over-voltage surges.

Features

CDLL5919D is packaged in a tiny SOT-89P form factor that serves as an ideal choice for space-constrained designs. It is designed to deliver high breakdown voltage and reverse leakage current at a low operating current. This device exhibits a maximum stable leakage current of 500uA and a maximum peak pulse voltage of 65V. The maximum power dissipation of CDLL5919D is 500mW, with a zener voltage range of 3.3V to 36V and a operating temperature range of -55°C to +150°C.

Applications of CDLL5919D

Due to its small size and exceptional performance, CDLL5919D is suitable for a wide range of applications. It can be used in voltage regulators, signal line clamps, or surge suppression.The device exhibits excellent overload protection characteristics and can be used in automotive, industrial, consumer, and medical applications. It is also well suited for protecting susceptible circuits from voltage transients caused by electrostatic discharge/spikes.

Working Principle of CDLL5919D

The CDLL5919D is a silicon zener diode with two terminals - an anode and a cathode. CDLL5919D operates like a normal diode, meaning that current will flow in the direction of the anode and not in the direction of the cathode. When the voltage applied across the terminals is less than the zener breakdown voltage, the diode acts as an open switch, resulting in no current flowing through it.When the applied voltage equals or exceeds the breakdown voltage (Vz), the device is capable of conducting a current known as zener current (Iz). This current will remain nearly constant regardless of the applied voltage, as long as the applied voltage is maintained at or above the breakdown voltage. This current is then used to regulate or stabilize the voltage across the diode. This is the core principle working behind CDLL5919D.

Conclusion

CDLL5919D is a single, high-voltage, low-power, subminiature zener diode that has been developed by EPC. It is packaged in a tiny SOT-89P form factor, making it the ideal choice for space-constrained designs. With a maximum stable leakage current of 500uA and a maximum peak pulse voltage of 65V, this device is suitable for a wide range of applications. Its working principle is based on the principle of zener breakdown voltage, making it highly efficient in voltage regulation, power dissipation and over-voltage surge protection.

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