1N4782

Overview

The Microchip Technology 1N4782 is a silicon voltage reference diode designed for precision regulation. It features an 8.5 V nominal Zener voltage with a 5% tolerance and operates at a test current of 1 mA. The device dissipates up to 250 mW of power and maintains a maximum dynamic impedance of 100 Ohms. It utilizes a DO-204AA glass axial package, supporting through-hole mounting. The component functions within a temperature range of -55°C to +100°C, offering a low voltage temperature coefficient of 0.002 %/°C and a maximum reverse leakage current of 10 uA.

Feature Summary

• Temperature compensated design ensures stable voltage regulation across varying thermal conditions
• Hermetically sealed glass encapsulation provides environmental protection and reliability
• Low dynamic impedance characteristics support precise voltage reference applications

Applications

• Precision voltage reference circuits requiring stable DC levels
• Temperature compensated regulator designs
• High-reliability electronic systems utilizing through-hole technology

Procurement Notes

Verify the specific suffix (e.g., TR) against official datasheets to confirm packaging format and compliance status. Confirm RoHS certification requirements as standard variants may not be compliant. Ensure the manufacturer source matches Microchip Technology specifications before procurement.

Selection Notes

Select this component when a stable 8.5 V reference is required in a hermetic glass package. Consider the 250 mW power dissipation limit and 100 Ohm impedance for circuit stability. Verify that the operating temperature range meets system thermal constraints.

Part Context

This part belongs to the industry-standard 1N47xx series of Zener diodes. It serves as a voltage reference element within discrete semiconductor components. The DO-204AA package defines its physical footprint for axial leaded mounting configurations.

Replacement Considerations

Cross-reference with other manufacturers' 1N4782 equivalents. Verify electrical parameters such as Zener voltage tolerance and dynamic impedance match the original specifications.