1N5280BE3/TR

Single Zener Diodes Overview

The Microchip Technology 1N5280BE3/TR is a 500 mW glass axial-lead Zener diode housed in a DO-35 package. It provides a nominal Zener voltage of 190 V with a standard tolerance of ±5%, indicated by the 'B' suffix. The device operates within a temperature range of -65°C to +175°C and features a maximum reverse leakage current of 0.1 µA at 190 V. Key electrical parameters include a test current of 0.66 mA, a Zener impedance of 2400 Ohms at the test current, and a temperature coefficient of +0.110 %/°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features minimal capacitance characteristics suitable for high-frequency applications
• Constructed with a hermetically sealed glass axial-lead package for durability
• Inherently radiation hard per MicroNote 050 specifications

Single Zener Diodes Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection stages in electronic systems
• Precision clipping and clamping applications
• Power supply regulation modules

Single Zener Diodes Procurement Notes

Verify that the ordering suffix includes both 'e3' for RoHS compliance and 'TR' for tape and reel packaging. Confirm the specific manufacturer origin, as this part number falls under the Microsemi Scottsdale Division product line now managed by Microchip Technology. Ensure the component matches the JEDEC registered type requirements for your design specifications.

Single Zener Diodes Selection Notes

Select this component when a 190 V breakdown voltage is required with tight ±5% tolerance. The DO-35 glass package offers flexible axial-lead mounting terminals. Consider the positive temperature coefficient for thermal stability analysis. Verify that the 500 mW power dissipation rating meets the thermal constraints of the target application environment.

Single Zener Diodes Part Context

This device belongs to the 1N5221 through 1N5281B series of 0.5 watt Zener Voltage Regulators. The series covers a wide voltage selection from 2.4 to 200 volts. The 'e3' suffix denotes RoHS compliant devices with matte-tin plating, while the 'TR' suffix indicates availability in tape and reel format for automated assembly processes.

Single Zener Diodes Replacement Considerations

Direct substitutes within the same series include other 1N52xx B-suffix variants with different voltage ratings. For equivalent performance in a surface mount configuration, consider the MLL5280B MELF style package. Military screening levels are available via JAN, JANTX, or JANS prefixes if higher reliability standards are required.