1N4746AGE3

Overview

The Microchip Technology 1N4746AGE3 is a silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 18 V with a tolerance of ±5%. The device supports a maximum power dissipation of 1 W and operates within an extended temperature range from -65°C to +200°C. Packaged in the DO-41 axial through-hole format, it exhibits a maximum reverse leakage current of 5 µA at 13.7 V and a dynamic impedance of 20 Ohms. This component complies with RoHS standards and is suitable for general-purpose circuit protection and reference voltage generation.

Feature Summary

• Provides stable voltage regulation with a nominal 18 V output.
• Supports high thermal operation up to 200°C junction temperature.
• Utilizes a robust DO-41 axial leaded package for through-hole mounting.

Applications

• Voltage reference circuits
• Overvoltage protection
• General-purpose voltage regulation

Procurement Notes

Verify compliance with specific environmental directives such as RoHS before procurement. Confirm that the DO-41 package dimensions match the target PCB footprint. Ensure the operating temperature range aligns with the final application environment. Cross-reference datasheet parameters against design requirements to guarantee performance stability under varying load conditions.

Selection Notes

Select this component when a 18 V regulation point is required in through-hole designs. Consider the 1 W power rating for thermal management capabilities. Evaluate the 20 Ohm dynamic impedance for noise sensitivity in precision applications. Compare against other series members if different voltage levels or package types are needed.

Part Context

This part belongs to the standard 1N47xx series of Zener diodes manufactured by Microchip Technology. It shares functional similarities with other devices in the family but is distinguished by its specific 18 V rating and axial leaded construction. The series is widely used in industrial and consumer electronics for basic voltage clamping and regulation tasks.

Replacement Considerations

Equivalent parts include the 1N4746A and 1N4746AG. Verify pinout compatibility and thermal characteristics when substituting.