1N5277

Single Zener Diodes Overview

The Microchip Technology 1N5277 is a single Zener diode voltage regulator designed for through-hole mounting in the DO-35 axial leaded package. It provides a nominal Zener voltage of 160 V with a maximum power dissipation of 500 mW. The device features a reverse leakage current of up to 116 uA and a Zener impedance of 1.7 kOhms at the specified test current. Operating temperatures range from -65 C to +200 C, with a voltage temperature coefficient of 0.11 %/C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation at high voltage levels using silicon junction technology.
• Features hermetically sealed glass construction suitable for demanding environments.
• Offers high thermal stability with an extended maximum operating temperature rating.

Single Zener Diodes Applications

• High-voltage reference circuits requiring precise regulation.
• Overvoltage protection stages in industrial control systems.
• Clamping applications in aerospace and defense electronics.

Single Zener Diodes Procurement Notes

Verify the specific tolerance suffix (A or B) required for your design, as these variants differ in leakage current and maximum operating temperature. Confirm RoHS compliance status if environmental regulations apply to your project. Ensure the DO-35 package dimensions match your PCB footprint constraints before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component when a 160 V regulation point is necessary within a 500 mW power budget. Consider the 1N5277B variant if lower leakage current and tighter voltage tolerance are critical, noting its reduced maximum temperature rating compared to the standard A version. Evaluate the high Zener impedance impact on circuit noise performance.

Single Zener Diodes Part Context

This part belongs to the widely recognized 1N52xx series of Zener diodes manufactured by Microchip Technology. These components serve as fundamental building blocks for voltage regulation and protection across various electronic industries. The series offers standardized JEDEC registration, ensuring broad compatibility and availability for legacy and modern designs alike.

Single Zener Diodes Replacement Considerations

Direct substitutes include other manufacturers' 1N5277 equivalents meeting identical electrical specifications. Cross-reference with 1N5277B for tighter tolerance requirements if thermal limits allow. Verify pinout and package compatibility when considering surface-mount alternatives like the BUR-1 series.