1N4782/TR

Overview

The Microchip Technology 1N4782/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 a low voltage temperature coefficient of 0.002%/°C. The device operates in the DO-7 (DO-204AA) axial through-hole package, dissipating up to 250 mW. It supports a wide operating temperature range from -55°C to +100°C, with a maximum reverse leakage current of 10 µA at the test current of 1 mA.

Feature Summary

• Temperature compensated design ensures stable voltage regulation across varying thermal conditions
• Low voltage temperature coefficient minimizes drift for high-precision reference requirements
• Robust axial leaded construction suitable for standard through-hole mounting processes

Applications

• Precision voltage reference circuits requiring minimal thermal drift
• Temperature-compensated regulator designs
• Test and measurement instrumentation inputs
• Industrial control systems with strict stability requirements

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm the exact packaging configuration. Ensure the requested quantity aligns with the manufacturer's reel minimum order quantities. Confirm that the DO-7 package dimensions match the target PCB footprint constraints before finalizing procurement orders.

Selection Notes

Select this component when circuit stability under thermal variation is critical. The 8.5 V rating suits mid-range reference needs. Compare the 0.002%/°C coefficient against standard Zener alternatives to validate performance gains. Ensure the 250 mW power dissipation capability meets the circuit's thermal load expectations without excessive derating.

Part Context

This part belongs to the 1N47xx series of Zener diodes manufactured by Microchip Technology. The 'TR' suffix typically indicates tape and reel packaging for automated assembly. The series offers various voltage options within the DO-7 package, providing a standardized solution for discrete voltage regulation tasks in commercial and industrial electronics.

Replacement Considerations

Cross-reference with other manufacturers offering 8.5 V temperature-compensated Zener diodes in the DO-7 package. Verify that substitute parts meet the identical 0.002%/°C temperature coefficient and 250 mW power rating specifications to maintain circuit performance integrity.