1N4771A

Overview

The 1N4771A is a temperature-compensated Zener diode manufactured by Microchip Technology. It features a nominal Zener voltage of 9.1V with a 5% tolerance and operates at a test current of 1 mA. The device has a maximum power dissipation of 0.5W and utilizes the DO-35 axial glass package. It exhibits a maximum Zener impedance of 20 Ohms and a maximum reverse leakage current of 50 nA. The component supports an operating temperature range from -65°C to +175°C.

Feature Summary

• Temperature compensated design for stable voltage regulation across wide thermal ranges
• Axial glass encapsulation in DO-35 package for through-hole mounting
• High maximum junction temperature rating up to 175°C

Applications

• Precision voltage reference circuits requiring low temperature drift
• Overvoltage protection in sensitive electronic systems
• Voltage regulator stages in industrial instrumentation

Procurement Notes

Verify the specific suffix or revision code against the manufacturer's official datasheet to ensure compatibility with temperature compensation specifications. Confirm RoHS compliance status as it may vary by production batch. Cross-reference the part number with authorized distributors to validate authenticity and traceability before procurement.

Selection Notes

Select this component when precise voltage stability over temperature is critical. The 9.1V breakdown point suits applications needing mid-range reference voltages. Ensure the circuit design accommodates the 0.5W power limit and 1 mA test current conditions for accurate performance validation.

Part Context

This part belongs to the standard Zener diode family produced by Microchip Technology. It is designed for general-purpose voltage regulation tasks where thermal stability is a primary concern. The DO-35 package allows for easy integration into printed circuit boards using standard through-hole assembly techniques.

Replacement Considerations

Consult official substitution guides for equivalent temperature-compensated Zener diodes with matching 9.1V ratings and DO-35 packaging. Verify that alternative parts meet the same 175°C maximum operating temperature and 0.5W power dissipation requirements.