1N4769

Overview

The Microchip Technology 1N4769 is a temperature-compensated Zener reference diode designed for precision voltage regulation. It features a nominal Zener voltage of 9.1 V with a tight tolerance of 5%. The device operates in the low current range, typically tested at 500 µA, and exhibits a very low voltage temperature coefficient of 0.0005 %/°C. It is housed in a DO-204AA-2 (DO-35) axial through-hole package with a power dissipation rating of 500 mW. The component supports an extended operating temperature range from -65°C to +175°C, ensuring stability in demanding environments.

Feature Summary

• Temperature compensated design for stable reference voltage across wide thermal ranges
• Low current operation optimized for precision applications
• Metallurgically bonded double plug construction for reliability

Applications

• Precision voltage reference circuits
• Temperature compensated oscillator circuits
• High-stability power supply regulation

Procurement Notes

Verify the specific suffix (e.g., TR for reel packaging) against the official datasheet to ensure correct packaging configuration. Confirm RoHS compliance status as it varies by manufacturer lot and region. Cross-reference the maximum ratings and electrical characteristics directly with the latest Microchip documentation to ensure compatibility with system requirements before procurement.

Selection Notes

Select this component when a stable 9.1 V reference is required under varying thermal conditions. The low temperature coefficient makes it suitable for high-precision analog circuits. Ensure the circuit design accommodates the low test current requirement. Verify that the through-hole DO-35 package fits the PCB layout constraints and that the power derating curve aligns with the expected ambient temperature profile.

Part Context

This part belongs to the 1N4765 through 1N4774A series of temperature-compensated Zener reference diodes manufactured by Microchip Technology. These devices are characterized by their metallurgical bonding and double plug construction, which contribute to long-term stability. The series is specifically engineered for applications requiring minimal voltage drift over temperature, distinguishing them from standard Zener diodes.

Replacement Considerations

Direct substitutes within the same family include parts like 1N4765A or 1N4772A, provided they share the identical 9.1 V nominal voltage and temperature compensation characteristics. Verify pinout and package dimensions match exactly. Ensure any alternative meets the same strict temperature coefficient and leakage current specifications.