1N4746AGE3/TR

Overview

The Microchip Technology 1N4746AGE3/TR 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 +175°C. Packaged in the DO-204AL (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 is suitable for robust circuit protection and reference voltage generation tasks.

Feature Summary

• Provides stable voltage regulation with a nominal 18 V output.
• Capable of handling up to 1 W of power dissipation.
• Operates reliably across a wide industrial temperature range.
• Constructed using high-reliability silicon technology.

Applications

• Voltage regulation in power supply circuits
• Overvoltage protection for sensitive electronic components
• Reference voltage sources in measurement equipment

Procurement Notes

Verify the specific suffix 'AGE3' against official Microchip documentation to confirm RoHS compliance status and lead-free manufacturing details. Ensure the ordering quantity aligns with manufacturer packaging requirements. Confirm that the DO-41 package dimensions match your PCB layout constraints before finalizing procurement orders.

Selection Notes

Select this component when a precise 18 V regulation point is required with high thermal stability. The 1 W power rating allows for use in moderate current applications without excessive heat sinking. Verify that the ±5% tolerance meets your circuit's accuracy requirements compared to tighter tolerance alternatives.

Part Context

This part belongs to the standard 1N47xx series of Zener diodes manufactured by Microchip Technology. These devices are widely used in general-purpose electronics for their reliability and standardized performance characteristics. The series offers various voltage options within a consistent physical package form factor.

Replacement Considerations

Direct substitutes include the 1N4746A and 1N4746AG. Verify pinout compatibility and ensure the replacement part meets the same 1 W power dissipation and 18 V Zener voltage specifications.