1N4784

Overview

The Microchip Technology 1N4784A/TR is a temperature-compensated Zener diode designed for precision voltage regulation applications. It features an 8.5 V nominal Zener voltage with a tight 5% tolerance and operates within a wide temperature range from -65°C to +175°C. The device dissipates up to 500 mW of power in a DO-204AA-2 axial package. Key electrical characteristics include a maximum reverse leakage current of 10 µA, a Zener impedance of 100 Ohms at a test current of 1 mA, and a low voltage temperature coefficient of 0.0005 %/°C.

Feature Summary

• Temperature compensated design ensures stable voltage regulation across extreme environmental conditions
• High reliability construction supports operation in demanding industrial and aerospace environments
• Precision voltage reference capability with tight tolerance specifications

Applications

• Precision voltage reference circuits requiring minimal thermal drift
• Industrial control systems operating under wide temperature variations
• Aerospace and defense electronic instrumentation

Procurement Notes

Verify the specific suffix (e.g., /TR) against your bill of materials, as it indicates reel packaging. Confirm RoHS compliance status directly with the manufacturer or authorized distributor, as indicated by the 'N' designation in available data. Ensure the required operating temperature range aligns with the component's specified limits before finalizing procurement decisions.

Selection Notes

Select this component when precise voltage stability over temperature is critical. The 1N4784A offers superior thermal compensation compared to standard Zener diodes. Verify that the 500 mW power dissipation rating meets the circuit requirements. Consider the axial DO-204AA-2 package for through-hole mounting compatibility in existing designs.

Part Context

This part belongs to Microchip's established line of temperature-compensated Zener diodes. These components are engineered for high-reliability applications where standard voltage references may fail due to thermal instability. The product family serves critical markets including aerospace, defense, and industrial automation.

Replacement Considerations

Consult official Microchip documentation for verified cross-reference part numbers. Do not substitute with generic Zener diodes lacking temperature compensation features. Verify pinout and package dimensions match the DO-204AA-2 specification.