BZX384C3V9-E3-18

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	3.9V
Tolerance:	±5%
Power - Max:	200mW
Impedance (Max) (Zzt):	90 Ohms
Current - Reverse Leakage @ Vr:	5µA @ 1V
Operating Temperature:	-55°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	SC-76, SOD-323
Supplier Device Package:	SOD-323

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Diodes - Zener - Single

BZX384C3V9-E3-18 is a type of single zener diode which is a form of semiconductor component that passes current in one direction only. A zener diode is used to regulate or maintain a specific voltage level across its terminal. This specific diode is packaged in a small SOD123 package, featuring a Vz rating of 3.9V and a Pd max value of 25mW. This diode is rated for an operating temperature range of -55C to +125C and has a maximum thermal resistance of 125C/W. The device itself is a general-purpose diode designed to provide stability as well as protection in many power supply applications.The primary application field of this diode is in various power supply applications such as audio equipment, RF amplifiers, motor control, and power supplies. The device has an absolute maximum rating of 40V, meaning that its use must be restricted to those components operating in an environment with a specified lower breakdown voltage. Its capability to hold a constant voltage, regardless of the current supplied, makes it an ideal choice for designing a reliable power supply.The working principle of the BZX384C3V9-E3-18 is quite simple. The device comprises a P-type material at the anode and an N-type material at the cathode. This combination allows for a flow of electrons from the higher voltage point to the lower voltage point. When the voltage across the diode reaches a specific value, called the breakdown voltage, or Vz, electrons start to flow from the low-voltage anode to the high-voltage cathode side. This can cause current to surge and, if the voltage exceeds the breakdown rating of the device, the diode may become damaged.To prevent this, a zener diode should be used in combination with a resistor. The diode will drop the voltage, while the resistor will limit the amount of current allowed to pass through the device. This will ensure that, in the event of an overvoltage condition, there will be sufficient current limiting to protect the device from damage.Some of the other applications of this device include the use of protection and clamping circuits, level switching, temperature controlled switching, noise suppression, and negative voltage clamping. The device is also suitable for use in high-frequency oscillators and RF power amplifiers as it is able to provide stability and protection against overvoltage conditions.Overall, the BZX384C3V9-E3-18 is a versatile device with a wide range of uses due to its ability to provide reliable and precise control over a wide voltage range. In the event of an overvoltage, the device will protect components from damage or allow for smooth current flow. This makes the device ideal for use in a wide range of power supply applications, as well as many other electronic applications.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description