1N5266B/TR

Single Zener Diodes Overview

The Microchip Technology 1N5266B/TR is a 0.5 W glass axial-lead Zener diode in the DO-35 package, featuring a nominal voltage of 68 V with ±5% tolerance (suffix B). It operates within a temperature range of -65°C to +175°C and includes a TR suffix for tape-and-reel packaging. Key electrical parameters include a maximum reverse leakage current of 100 nA at 43 V, a dynamic impedance of 230 Ω at 0.25 mA, and a positive temperature coefficient of +0.097 %/°C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass axial-lead construction
• Regulates voltage across broad operating currents and temperatures
• Minimal capacitance characteristics
• Inherently radiation hard

Single Zener Diodes Applications

• Voltage regulation over wide operating ranges
• Reference voltage generation
• Protection circuits requiring minimal capacitance

Single Zener Diodes Procurement Notes

Verify that the part number includes the 'TR' suffix to confirm tape-and-reel packaging rather than bulk supply. Ensure the 'B' suffix is present to guarantee the required ±5% voltage tolerance. Confirm the manufacturer origin matches Microchip or authorized successor entities like Microsemi Scottsdale Division to ensure compliance with specified JEDEC registration and screening standards.

Single Zener Diodes Selection Notes

Select this component when a 68 V reference with tight ±5% tolerance is required in an axial-lead form factor. The positive temperature coefficient makes it suitable for applications where predictable voltage drift is necessary. Verify that the 0.5 W power dissipation rating aligns with the thermal design constraints of the target circuit environment.

Single Zener Diodes Part Context

This device belongs to the 1N5221 through 1N5281B series of 0.5 W Zener Voltage Regulators. These components are widely recognized for their extensive selection covering voltages from 2.4 to 200 V. The series provides standard tolerances alongside tighter options identified by specific suffix letters on the part number.

Single Zener Diodes Replacement Considerations

Surface mount equivalents are available as MLL5221 to MLL5281B in the DO-213AA MELF style package. For non-suffix versions, check if looser tolerances meet the application requirements.