1N4766A/TR

Overview

The Microchip Technology 1N4766A/TR is a single Zener diode housed in a DO-204AA (DO-35) axial leaded package. It features a nominal Zener voltage of 9.1 V with a tolerance of ±5%. The device has a power dissipation rating of 500 mW and operates within a temperature range of -65 °C to +175 °C. Key electrical parameters include a maximum reverse leakage current of 10 µA, a Zener impedance of 350 Ω, and a test current of 3.3 mA.

Feature Summary

• Temperature compensated design for stable voltage regulation across wide thermal ranges
• Axial through-hole construction suitable for standard PCB mounting techniques
• High-temperature operation capability up to 175 °C junction temperature

Applications

• Voltage reference circuits requiring thermal stability
• Overvoltage protection in industrial control systems
• Clamping applications in high-temperature electronic assemblies

Procurement Notes

Verify the specific suffix TR indicates tape and reel packaging when ordering. Confirm the manufacturer's current lead time as it may vary due to production schedules. Ensure the DO-204AA footprint matches your board layout requirements before finalizing procurement decisions.

Selection Notes

Select this component when a 9.1 V regulated voltage is required in space-constrained axial packages. Consider the 500 mW power rating against expected circuit currents. Verify that the 350 Ω impedance meets noise sensitivity requirements for your specific signal path.

Part Context

This part belongs to the 1N47xx series of temperature-compensated Zener diodes manufactured by Microchip Technology. These devices are designed for precision applications where voltage stability over temperature is critical compared to standard Zener diodes.

Replacement Considerations

Check for direct equivalents from other manufacturers offering identical 9.1 V, 500 mW specifications in DO-35 packages. Verify pinout compatibility and ensure replacement parts meet the same ±5% tolerance and temperature range requirements.