1N4769A

Overview

The Microchip Technology 1N4769A is a temperature-compensated Zener diode designed for precision voltage regulation applications. It features a nominal Zener voltage of 9.1 V with a tight tolerance of ±5%. The device operates in the DO-204AA (DO-35) axial through-hole package and dissipates up to 500 mW of power. Key electrical characteristics include a maximum reverse leakage current of 10 µA, a Zener impedance of 350 Ohms, and a low voltage temperature coefficient of 0.0005 %/°C. It supports an extended operating temperature range from -65°C to +175°C.

Feature Summary

• Temperature compensated design ensures stable reference voltage across wide thermal variations
• Precision voltage regulation with tight manufacturing tolerance for accuracy-critical circuits
• Robust construction utilizing metallurgically bonded double plug technology

Applications

• Precision voltage reference sources in measurement instrumentation
• Temperature-stable regulator circuits requiring minimal drift
• High-reliability aerospace and defense electronic systems

Procurement Notes

Verify compliance requirements as this component may not meet RoHS standards depending on the specific revision. Confirm the exact suffix designation during ordering, as packaging options such as reel or bulk may vary by manufacturer lot. Ensure the procurement channel provides traceability documentation suitable for regulated industries given the specialized nature of temperature-compensated devices.

Selection Notes

Select this component when circuit stability under thermal stress is critical. The low temperature coefficient makes it superior to standard Zener diodes for reference applications. Verify that the 500 mW power dissipation rating aligns with the thermal management capabilities of the target PCB layout and ambient operating conditions.

Part Context

This part belongs to the 1N47xxA series of temperature-compensated Zener diodes manufactured by Microchip Technology. These components are engineered specifically for applications demanding high voltage stability over extreme temperature ranges. The series utilizes advanced junction technologies to minimize drift, distinguishing them from general-purpose voltage regulators.

Replacement Considerations

Direct substitutes within the same family include the 1N4768A and 1N4770A. Cross-manufacturer equivalents must be verified against the specific 0.0005 %/°C temperature coefficient requirement to ensure functional parity.