BZX84C4V3-TP

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The BZX84C4V3-TP is a small signal Zener diode designed to protect sensitive electronics from voltage spikes, often caused by lightning strikes or power outages. It is a single diode with a voltage breakdown of 4.3 volts and typical power dissipation of 350 mW. The device has glass ceramic passivation for environmental protection.

The BZX84C4V3-TP is designed to operate in the reverse-breakdown region and works as a voltage regulator. When the voltage rises above the Zener voltage, the diode conducts backwards, diverting current away from the load. This reduces the voltage at the load to the Zener voltage.

The reverse-breakdown breakdown region is also known as Zener breakdown and occurs when a significant electric field is applied across a semi-conductor junction. As the voltage is increased, electrons are pulled away from the junction, creating a gap. When the gap is large enough, current can flow directly through it. The voltage at which this occurs is referred to as the Zener voltage.

The BZX84C4V3-TP has a wide range of applications in a variety of power supplies and voltage regulators. It can be used in battery chargers, DVRs, automotive systems, LED drivers, power management systems, and other applications. The device offers protection from over-voltage and protects equipment from electrical noise, such as surges from nearby lightning strikes.

In applications where a device is subjected to extreme temperature cycling or prolonged exposure to high temperature, the device offers improved reliability. The glass ceramic passivation provides excellent humidity resistance, as well as prevents dust and moisture from penetrating the passivation layer. This increases the overall reliability of the device.

The BZX84C4V3-TP is a reliable and effective device for voltage regulation and protection. The reverse-breakdown region works to divert current away from the load and protect sensitive electronics from voltage spikes. With its wide range of applications and improved reliability, the BZX84C4V3-TP is an ideal choice for any application requiring protection from electrical noise and over-voltage.

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