1N4769A/TR

Overview

The 1N4769A/TR is a temperature-compensated Zener diode manufactured by Microchip Technology. It features a nominal Zener voltage of 9.1 V with a tolerance of ±5%. The device operates in the DO-204AH (DO-35) axial through-hole package and dissipates up to 500 mW. Key electrical parameters include a maximum reverse leakage current of 10 µA, a Zener impedance of 350 Ohms at a test current of 500 µA, and a voltage temperature coefficient of 0.0005 %/°C. It supports an operating temperature range from -65 °C to +175 °C.

Feature Summary

• Temperature compensated design for stable voltage regulation across wide thermal ranges
• High reliability construction suitable for demanding industrial environments
• Axial leaded package configuration for standard through-hole mounting

Applications

• Precision voltage reference circuits requiring low temperature drift
• Industrial control systems operating under extreme thermal conditions
• Test and measurement equipment calibration standards

Procurement Notes

Verify the specific suffix TR indicates tape and reel packaging when ordering. Confirm the DO-204AH package designation matches your PCB footprint requirements. Ensure the 9.1 V Zener voltage aligns with your circuit design specifications before finalizing procurement. Cross-reference the manufacturer part number with official Microchip documentation to confirm current production status.

Selection Notes

Select this component when precise voltage stability over temperature is critical. The low temperature coefficient makes it superior to standard Zener diodes for reference applications. Consider the 500 mW power rating for thermal management in enclosed spaces. Verify that the axial package style fits your assembly process constraints.

Part Context

This component belongs to the Microchip 1N4769 series of temperature-compensated Zener diodes. These devices are engineered to minimize voltage drift caused by thermal changes. The series is commonly used in high-precision analog circuits where standard Zener diodes would introduce unacceptable error due to temperature variations.

Replacement Considerations

Consult official Microchip substitution guides for verified equivalents. Generic replacements may not match the specific temperature coefficient or leakage current characteristics required for precision applications.