3EZ18D5/TR12

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A 3EZ18D5/TR12 is a single Zener Diode manufactured by Skyworks Solutions Inc., a leader in offering quality semiconductor components.

3EZ18D5/TR12 is a general-purpose Zener diode with a reverse breakdown voltage of 18V. It is also known as a voltage regulator that helps control the voltage across a circuit by breaking down when the incoming voltage reaches a certain predetermined limit.

The 3EZ18D5/TR12 has a maximum power dissipation of 90mW and a junction-to-case capacitance of 1.2pF. It also has an average forward voltage of 0.9V and can operate over a temperature range of –55 to +125 °C. The 3EZ18D5/TR12 features excellent surge and ESD robustness, making it suitable for use in challenging environments.

A notable use case for the 3EZ18D5/TR12 is in a bidirectional voltage limiter circuit. In this circuit, the 3EZ18D5/TR12 acts as a shunt regulator that limits the output voltage to a predetermined value when the incoming voltage exceeds a certain limit. This protection is essential when dealing with high-voltage surges, thereby improving the reliability of the circuit.

The 3EZ18D5/TR12 is also an integral part of power supply designs that are used for voltage regulation and over-voltage protection. In these designs, the 3EZ18D5/TR12 acts as a bypass element and helps regulate the input voltage so that it does not exceed a certain level. This helps prevent damage to the circuit and makes it more reliable.

The 3EZ18D5/TR12 also finds application in temperature sensing circuits. In these circuits, the 3EZ18D5/TR12 helps detect temperature variations by measuring the voltage drop across its body. The voltage drop increases with the increase in temperature and helps to switch on or off other circuit components as required.

The working principle of the 3EZ18D5/TR12 is fairly simple. As mentioned above, it acts as a shunt regulator and limits the voltage across the circuit when it reaches a certain level. The 3EZ18D5/TR12 has a reverse breakdown voltage of 18V. This means that when the circuit voltage reaches 18V, the diode activation can be triggered and the excess voltage is discharged through the diode. This helps protect the circuit from over voltage and helps maintain the voltage within a predetermined limit.

The 3EZ18D5/TR12 is an economical and reliable device with a wide range of applications. It is suitable for use in both commercial and industrial applications and can be used for temperature sensing as well as overvoltage protection.

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