3EZ62D2/TR12

3EZ62D2/TR12 Application Field and Working Principle

The 3EZ62D2/TR12 diode is a single polarity axial leaded, silicon zener diode, designed for use in a variety of electronic circuits. It offers a stable voltage and predictable dynamic resistance over a wide current range, making it ideal for various power supply and regulator applications.

This diode is designed to be surface-mounted on printed circuit boards, and features a maximum power dissipation rate of 500mW. It also has a thermal resistance of 95°C/W, a maximum forward voltage of 0.9V at IF=15mA, and a reverse voltage of 62V.

General Features

• Single polarity axial leaded
• Max Power Dissipation Rate: 500mW
• Thermal Resistance: 95°C/W
• Max Forward Voltage: 0.9V at IF=15mA
• Reverse Voltage: 62V

Applications

The 3EZ62D2/TR12 diode is suitable for a range of applications, including high-frequency switching power supplies, high-voltage DC/DC converters, LED string regulators, LED drivers, LED lighting and displays, modulators and controllers, over-voltage protection, motor controls, and LCD monitors.

Working Principle

Zener diodes, such as the 3EZ62D2/TR12, are designed to conduct current in one direction when a certain voltage threshold is reached. When the zener voltage, or breakdown voltage is reached, the diode has become “forward biased” and will allow current to flow between the anode (positive) and cathode (negative) terminals. This current flow is limited only by the external circuit, as the zener diode itself has no inherent limitation. This is a key difference between zener and regular silicon diodes. Regular silicon diodes will typically only allow current to flow in the anode to cathode direction, and the current is limited by the diode\'s junction impedance.

The 3EZ62D2/TR12 diode has a maximum reverse voltage of 62V. This means that when the voltage across the diode exceeds 62V, the diode will conduct current in the opposite direction (from cathode to anode). This reverse current flow is limited to a maximum of 500mW, as that is the maximum power dissipation rate of the diode. This prevents the diode from being damaged by excessive current.

In addition to its reverse breakdown voltage, the 3EZ62D2/TR12 also has a max forward voltage of 0.9V at IF=15mA. This means that the diode will not pass any current when the voltage across it is less than 0.9V. This allows the diode to be used as a voltage regulator in some applications, as it will limit the voltage to 0.9V while providing the necessary current to the circuit.