1N4762CPE3/TR12

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Diodes are a type of semiconductor component that acts like valves to control the current flow from negative to positive. Zener diodes are special application diodes that can use the current in reverse direction for voltage stabilization. The 1N4762CPE3/TR12 is a single Zener diode designed for providing temperature-stable, precise power reference voltages.

Application

The 1N4762CPE3/TR12 is a silicon planar power Zener diode with a zero-temperature coefficient. It is used primarily in communications and power supply designs, particularly in computing and telecom applications. The diode is mainly used in DC power supplies, voltage regulation circuits, battery regulators, and switching power supplies. The Zener also finds application in along with resistors and inductors in RF circuits and radio receivers.

Features

The 1N4762CPE3/TR12 features a wide range of operating temperature, from -65°C~ 150°C and a high voltage of 10 W. It also has a VzDC of 43 V and Power rating at Pd of 100 mWatts. Other features include breakdown voltage temperature coefficient of 0.06 V/°C, Norton thermal resistance of 3.0 °C/W and Vz tolerance of ±5%. The diode has a low Vz temperature coefficient and a low Vz current leakage, making it suitable for precision systems.

Working Principle

The 1N4762CPE3/TR12 Zener diode operates by allowing a certain amount of current to flow in the reverse direction, even when no electric current is flowing in the forward-biased direction. When an external voltage is applied to the anode-cathode junction above the breakdown voltage of the diode, a reverse-biased current flows through it. This current stabilizes the voltage across the diode, and helps maintain a stable output voltage under varying load conditions.

After the voltage reaches the breakdown voltage, the Zener diode enters the Zener region, where it dissipates power in the form of heat. This power dissipation occurs through the ohmic (resistive) losses of the junction, and the amount of voltage across the diode is maintained (approximately constant). This enables it to maintain a constant voltage across the load or between the supply voltage and the load, within certain limits.

Conclusion

The 1N4762CPE3/TR12 is a programmable Zener diode with a wide range of applications in computing and telecom systems. It features high temperature range and a wide breakdown voltage, making it suitable for precision systems requiring voltage regulation. The diode is also capable of maintaining a stable output voltage, making it suitable for battery regulator and switching power supplies applications.

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