1N5227BE3/TR

Single Zener Diodes Overview

The Microchip Technology 1N5227BE3/TR is a Zener diode with a nominal voltage of 3.6 V and a maximum power dissipation of 0.5 W at 25°C. It features a DO-35 glass axial-lead package, a test current of 20 mA, and a maximum reverse leakage current of 15 µA at 1 V. The device has a maximum Zener impedance of 24 Ω at 1 mA and a voltage temperature coefficient of -0.065 %/°C. Operating temperatures range from -65°C to +175°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range.
• Features hermetically sealed glass axial-lead construction for durability.
• Includes RoHS compliant plating options identified by the e3 suffix.

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection
• Clamping applications

Single Zener Diodes Procurement Notes

Verify that the ordering suffixes match the required specifications. The 'e3' suffix indicates RoHS compliance, while the 'TR' suffix specifies tape and reel packaging. Confirm the manufacturer origin, as this component originates from the Microsemi Scottsdale Division now part of Microchip Technology. Ensure the specific tolerance and screening requirements align with the standard JEDEC registration data provided in the datasheet.

Single Zener Diodes Selection Notes

Select this component when a 3.6 V Zener voltage is required within the 1N5221 through 1N5281B series. The B suffix guarantees a 5% voltage tolerance. Consider the thermal resistance of 250 °C/W junction-to-lead and derating curves if operating near the maximum power limits. Verify compatibility with existing PCB layouts designed for the DO-35 package dimensions.

Single Zener Diodes Part Context

This device belongs to the popular 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 available in various military screening levels with specific prefixes. The 1N5227 variant specifically targets the low-voltage end of the breakdown spectrum.

Single Zener Diodes Replacement Considerations

Compatible replacements include other manufacturers' 1N5227B equivalents or variants within the same 1N5221-1N5281B family. Cross-reference with MLL5227B surface mount equivalents if board space requires a MELF package change. Verify that any substitute maintains the 3.6 V nominal voltage and 500 mW power rating.

Single Zener Diodes FAQ

What does the 'e3' suffix indicate on this part number?

The 'e3' suffix denotes that the device is RoHS compliant and utilizes annealed matte-tin plating.

How is the polarity indicated on the 1N5227BE3/TR?

Polarity is indicated by a band on the cathode end of the glass body.