1N5228BE3/TR

Single Zener Diodes Overview

The Microchip Technology 1N5228BE3/TR is a 0.5 W glass axial-lead Zener diode in the DO-35 package. It provides a nominal Zener voltage of 3.9 V with a ±5% tolerance (B suffix). The device operates within a temperature range of -65°C to +175°C and features a maximum reverse current of 23 µA at 2.4 V. Electrical characteristics include a test current of 20 mA, a Zener impedance of 23 Ω at 0.25 mA, and a voltage temperature coefficient of -0.060 %/°C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass axial-lead construction for reliable operation
• Regulates voltage across a broad operating current and temperature range
• Inherently radiation hard per MicroNote 050
• Non-sensitive to electrostatic discharge

Single Zener Diodes Applications

• Voltage regulation circuits
• Reference voltage sources
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify that the ordering suffix 'e3' confirms RoHS compliance and 'TR' indicates tape-and-reel packaging. Confirm the B suffix matches the required 5% voltage tolerance. Ensure the component meets specific military screening requirements if applicable, as these require distinct prefixes not included in this standard part number.

Single Zener Diodes Selection Notes

Select this component when a 3.9 V reference with tight 5% tolerance is required. The negative temperature coefficient makes it suitable for applications where voltage stability over temperature is critical. Verify that the 0.5 W power dissipation rating aligns with the thermal design constraints of the target circuit.

Single Zener Diodes Part Context

This device belongs to the 1N5221 through 1N5281B series of 0.5 W Zener Voltage Regulators. The series offers a wide selection of voltages from 2.4 V to 200 V in standard DO-35 packages. The 'e3' suffix denotes RoHS compliant devices, while the 'TR' suffix specifies tape-and-reel packaging for automated assembly.

Single Zener Diodes Replacement Considerations

Consult the manufacturer's datasheet for equivalent parts within the same series or surface mount equivalents like the MLL5221 to MLL5281B in DO-213AA MELF packages. Verify that any substitute maintains the required 3.9 V nominal voltage and ±5% tolerance.

Single Zener Diodes FAQ

What is the voltage temperature coefficient for the 1N5228BE3?

The voltage temperature coefficient is -0.060 %/°C.

How is the polarity indicated on the 1N5228BE3?

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