1N5280B/TR

Single Zener Diodes Overview

The Microchip Technology 1N5280B/TR is a 500 mW glass axial-lead Zener diode in the DO-35 package. It provides an 8.2 V nominal Zener voltage with a ±5% tolerance, indicated by the 'B' suffix. The device operates within a temperature range of -65°C to +175°C and features a maximum reverse current of 500 nA at 7.5 V. Electrical characteristics include a test current of 20 mA, a maximum Zener impedance of 8.0 Ohms at 0.25 mA, and a positive voltage temperature coefficient of +0.062 %/°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features minimal capacitance suitable for high-frequency applications
• Inherently radiation hard per MicroNote 050 specifications

Single Zener Diodes Applications

• Voltage reference circuits requiring precise regulation
• Overvoltage protection in sensitive electronic systems
• Power supply output stabilization

Single Zener Diodes Procurement Notes

Verify that the ordering suffix matches the required tolerance and packaging configuration. Confirm RoHS compliance status if applicable, as standard versions may differ from e3 variants. Ensure the supplier documentation aligns with the specific JEDEC registration requirements for the component series.

Single Zener Diodes Selection Notes

Select this component when a 500 mW power rating and 8.2 V breakdown voltage are required. The B suffix ensures a tighter 5% tolerance compared to standard A suffix devices. Consider the DO-35 package dimensions and thermal resistance characteristics for PCB layout and heat dissipation planning.

Single Zener Diodes Part Context

This part belongs to the 1N5221 through 1N5281B series of 0.5 watt Zener Voltage Regulators. The series offers a wide selection of voltages from 2.4 to 200 volts. These components are JEDEC registered and utilize a hermetically sealed glass axial-lead DO-35 package for reliable performance in various environments.

Single Zener Diodes Replacement Considerations

Equivalent parts within the same series include 1N5280A (10% tolerance) or 1N5280C (2% tolerance). Surface mount equivalents are available in the MLL5221 to MLL5281B MELF style package.