BZX84C9V1W-TP Discrete Semiconductor Products

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Diodes - Zener - Single is a type of diode applied in circuits to provide a regulated voltage. As one of the most popular Zener diode applications, the BZX84C9V1W-TP is widely used in commercial, military, and consumer electronics for reverse polarity protection and voltage regulation, especially in audio and video systems. The general design and working principle of this diode will be discussed in detail in this article.

The BZX84C9V1W-TP is a 9V Zener diode with 2 Watt Power Dissipation Capability at 300 °C Derated above 25 °C. It is made up of an N-type semiconductor material for the anode and a P-type semiconductor material for the cathode. The diode has a maximum forward voltage of 1.65 volts and a Zener voltage of 8.9 volts. It is packaged in a DO-204AL axial lead form with a maximum reverse leakage current of 5mA and a low forward voltage drop of 0.8 volts. The diode features a fast reverse recovery time less than 5μs, a low forward voltage, and a low inductance of only 0.8nH.

The basic operating principle of the BZX84C9V1W-TP is quite simple. A small current flows through it when the anode is connected to a positive source and the cathode is connected to a negative source. As the voltage across it increases, a breakdown occurs and the current begins to increase dramatically until it reaches a Zener voltage of 8.9VDC. As the current continues to increase, the Zener diode begins to conduct to regulate the voltage and the current. This helps to maintain a stable voltage output across the diode.

The common applications of the BZX84C9V1W-TP include reverse polarity protection, voltage regulation, audio and video systems, pulse width modulation circuits, and low voltage power supplies. It is also extensively used in automotive electronics and other consumer electronics. The diode can be used in series with an LED or a transistor to provide an overvoltage protection. It can also be used as a voltage regulator in a wide range of motor control circuits.

The BZX84C9V1W-TP comes with many advantages. It has a low thermal resistance and a high temperature coefficient of resistance. It can handle up to 2 Watts of power dissipation and the low forward voltage drop of 0.8V helps to reduce power loss and improve the efficiency of the circuit. The diode also comes with an internal Zener capacitance to help maintain a stable voltage output over a wide frequency range.

In conclusion, the BZX84C9V1W-TP is an ideal choice for a wide range of applications. With its low forward and reverse voltage drop, high temperature coefficient of resistance, fast recovery time, and low inductance, it provides the stability, power dissipation, reverse polarity protection and voltage regulation required for audio and video systems, automotive electronics and other consumer electronics. The device is also available in a small DO-204AL package making it easy to install and accommodate in small spaces.

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