BZX84W-C39F

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	39V
Tolerance:	±5%
Power - Max:	40W
Impedance (Max) (Zzt):	130 Ohms
Current - Reverse Leakage @ Vr:	50nA @ 27.3V
Voltage - Forward (Vf) (Max) @ If:	900mV @ 10mA
Operating Temperature:	150°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	SC-70, SOT-323
Supplier Device Package:	SC-70

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The BZX84W-C39F diode is a single Zener diode from the Diodes family. It is a general purpose diode, designed for use in a variety of applications. It is well-suited for power supply design, thermal protection, and voltage regulation.The BZX84W-C39F diode has a maximum power dissipation rating of 400mW at a typical operating temperature range of –55°C to +125°C. It also has a breakdown voltage of 39V with a positive voltage between 36-75V and a maximum reverse current of 5mA at 0V. Its capacitance is relatively low, at 200pF±30% at 1MHz/25°C.The BZX84W-C39F diode has a reverse breakdown voltage of 39V and is able to dissipate power up to a maximum of 400mW. When the reverse current flowing through the diode is below the rated level, the diode is in forward conduction state and the blocking current is the same as the forward current. When the reverse voltage is increased to a value more than the breakdown voltage, the diode is in reverse biased and allows a large flow of reverse current that depends on the applied voltage. The BZX84W-C39F diode is designed to be used in a variety of applications such as DC/DC converters, signal generation circuits, headlight dimmers, and power supply filters. In all these applications, it serves as a reliable protection to sensitive components from over-voltage and over-current conditions.The use of BZX84W-C39F diodes in DC/DC converters makes the system more reliable and efficient as it can regulate the input voltage required by the load. The diode functions as an electronic resistor in this type of applications. It prevents the input voltage from exceeding the specified limit while allowing an unrestricted forward current when the input voltage is lower than the breakdown voltage.In signal generation circuits, BZX84W-C39F diodes are used to limit the forward current and to decrease the circuit output swing. Its low capacitance also makes it suitable for frequency stabilization and precision timing applications.The BZX84W-C39F diode can also be used as a headlight dimmer in automotive applications. The device functions as a low impedance resistor in reverse conduction state. This helps maintain the desired light level when the power supply voltage changes.The BZX84W-C39F diode is also well suited for power supply filtering. In this application, it suppresses line noise through proper side-clamping and voltage regulation. This helps to ensure the smooth operation of the power supply, protecting the downstream electronics from potential excessive voltage.Overall, the BZX84W-C39F diode is an ideal choice for a variety of applications requiring voltage control and protection. Its combination of low capacitance, high reverse breakdown voltage and high power dissipation makes it a reliable and cost-effective solution for voltage regulation, signal processing and noise suppression. Its general-purpose design makes it well-suited for a wide range of applications.

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