1N5228B-T

Single Zener Diodes Overview

The Diodes Incorporated 1N5228B-T is a discontinued 500mW epitaxial Zener diode housed in a DO-35 glass axial package. It provides a nominal Zener voltage of 3.9V with a ±5% tolerance, tested at 20mA. Key electrical characteristics include a maximum Zener impedance of 23Ω and a reverse leakage current of 10µA at 1V. The device operates within a temperature range of -65°C to +175°C and features a negative temperature coefficient of -0.060%/°C.

Single Zener Diodes Feature Summary

• Epitaxial construction for high stability
• Hermetic glass compression bond package
• Lead-free finish compliant with RoHS directives

Single Zener Diodes Applications

• Voltage regulation circuits
• Reference voltage sources
• Overvoltage protection

Single Zener Diodes Procurement Notes

This component is officially obsolete and discontinued by the manufacturer. Verify availability through authorized distributors or secondary markets. Confirm that the specific lot meets required quality standards, as production has ceased. Ensure compatibility with existing designs before sourcing from alternative suppliers.

Single Zener Diodes Selection Notes

Select this part only if legacy design compatibility is mandatory. For new designs, consider surface mount equivalents such as the MMSZ52xxB series recommended by the manufacturer. Evaluate thermal derating requirements carefully, as power dissipation must be reduced above 75°C ambient temperature.

Single Zener Diodes Part Context

Part of the 1N5221B through 1N5267B series of 0.5W Zener regulators. These devices offer a wide selection of voltages from 2.4V to 200V in standard 5% or 10% tolerances. The series utilizes JEDEC registered DO-35 packages suitable for through-hole mounting.

Single Zener Diodes Replacement Considerations

MMSZ5228B-7-F (Diodes Incorporated)

Single Zener Diodes FAQ

What is the status of the 1N5228B-T?

The part is obsolete and discontinued.

What is the recommended replacement?

Use the MMSZ52xxB series.