3EZ18D5-TP

Diodes - Zener - Single

The 3EZ18D5-TP is a single zener diode capable of handling up to 500 mW of power. It is designed to provide a stabilized reverse voltage output in a broad range of circuitry and applications. The diode’s operating temperature range is -55 to +150°C and it is housed in a SOD-123 package.

Application Field

The 3EZ18D5-TP zener diode is well-suited for a variety of applications, including voltage regulation, transient voltage suppression, voltage clamping, EMI/RFI protection, as well as in switching and logic applications. This diode is particularly suitable for use in automotive electronics, battery-powered applications, and other power management systems.

Working Principle

The operation of a zener diode is based on the principle of avalanche breakdown. When the reverse bias applied to the diode reaches a critical value, the electric field in the depletion region exceeds the breakdown strength of the junction, and a large number of electrons and holes are created by the impact ionization process. This creates a large current through the diode and a large voltage drop across it. The 3EZ18D5-TP provides a stable voltage output at a given reverse bias. It is usually used with a resistor in series to limit the maximum current to a safe value.

The zener breakdown voltage of the 3EZ18D5-TP is typically 17.5V with an operating temperature range of -55 to +150°C. Its maximum power dissipation is 500 mW and the maximum current is 5 mA at 25°C. The maximum reverse current of the diode is 100 nA and its forward voltage is 1V at 500mA. The diode also has a series resistance of 0.15 ohms.

Conclusion

The 3EZ18D5-TP is a single zener diode capable of withstanding up to 500 mW of power. It is suitable for a range of applications, including voltage regulation, EMI/RFI protection, and other power management systems. The diode operates on the principle of avalanche breakdown, providing a stabilized reverse voltage output at a given reverse bias. Its typical zener breakdown voltage is 17.5V, with a maximum current of 5 mA and a maximum forward voltage of 1V at 500mA. Its maximum power dissipation and series resistance are 500 mW and 0.15 ohms, respectively. As such, the 3EZ18D5-TP is an ideal choice for low-current, low-voltage applications.