1N3994RA

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The 1N3994RA diode is classified as a single Zener diode. These diodes are used to regulate voltage and to protect electronic components when a transient voltage change occurs. They are characterized by their low forward voltage drop, which makes them ideal for use in voltage-regulation circuits. < P > This Zener diode is an inexact reverse breakdown diode that has an avalanche breakdown mechanism. An avalanche breakdown is a process by which the electric field built up across a reverse biased diode will become strong enough to create an avalanche of electrons which are injected into the device. This avalanche of electrons will eventually cause the P-N junction to break down, thus generating a large current. < P > The 1N3994RA can be used in a variety of applications including voltage regulation, voltage-clamping and power supply design. When used as a Zener diode, it is placed in parallel with a regular diode. The Zener voltage of the 1N3994RA is 7.0 volts and its maximum power rating is 0.25 watt. < P > The 1N3994RA is commonly used in power supplies and DC-DC converters to provide regulation and over-voltage protection. It also finds application in voltage sensors, voltage-controlled switches and battery-charger circuits. < P > The working principle of a 1N3994RA Zener diode is based on the breakdown voltage of the device when it is forward biased. When a forward voltage is applied to the diode, it reaches a “knee” point where its current increases dramatically. This is due to the avalanche breakdown phenomenon. As the voltage increases above the breakdown voltage, the current through the diode will remain constant. < P > The 1N3994RA diode has been around for many years and is a well-known and reliable device. Its wide range of operating temperature and its good performance for both temperature and power ensure its continued use in a variety of applications. Its wide operating voltage of 7 volts makes it suitable for use in a variety of circuits.

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