1N5277A(DO-35)TR

Single Zener Diodes Overview

The Microsemi 1N5277A(DO-35)TR is a Zener diode with a nominal voltage of 160 V and a 10% tolerance. It operates in the DO-35 glass axial-lead package, dissipating up to 0.5 watts at 25°C. The device features a maximum reverse current of 116 µA and a Zener impedance of 5500 Ohms at IZK = 0.25 mA. It withstands temperatures from -65°C to +175°C and includes a tape-and-reel option for automated assembly.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Hermetically sealed glass axial-lead construction ensures environmental durability
• Inherently radiation hard per MicroNote 050 specifications
• Flexible mounting terminals support standard through-hole PCB integration

Single Zener Diodes Applications

• Voltage reference circuits requiring high-voltage stability
• Overvoltage protection stages in power supply designs
• Clamping applications in high-impedance signal paths

Single Zener Diodes Procurement Notes

Verify that the suffix TR confirms tape-and-reel packaging compliance with EIA-296 standards. Confirm the A suffix indicates the required 10% voltage tolerance. Ensure the component matches the specified JEDEC type number for guaranteed parameter limits on breakdown voltage, reverse current, and forward voltage.

Single Zener Diodes Selection Notes

Select this part when a 160 V Zener voltage is required within a DO-35 package. Consider the 10% tolerance if tighter precision is unnecessary. Evaluate thermal derating requirements based on the 0.5-watt dissipation limit and ambient temperature conditions during operation.

Single Zener Diodes Part Context

This component belongs to the 1N5221 through 1N5281B series of 0.5-watt Zener Voltage Regulators. The series offers voltages from 2.4 to 200 volts with various tolerance options identified by suffix letters. It represents a standard JEDEC registered device suitable for general-purpose regulation tasks.

Single Zener Diodes Replacement Considerations

Equivalent parts include the 1N5277A without the TR suffix for bulk packaging or the 1N5277B for 5% tolerance. Surface mount equivalents are available in the MLL5221 to MLL5281B series using the DO-213AA MELF package.