1N5257B-T

Single Zener Diodes Overview

The Diodes Incorporated 1N5257B-T is a discontinued 33V epitaxial Zener diode housed in a DO-35 glass axial package. It features a nominal Zener voltage of 33V with a ±5% tolerance and operates at a test current of 3.8mA. The device dissipates up to 500mW of power, maintains a maximum dynamic impedance of 58Ω, and exhibits a reverse leakage current of 0.1µA. Its operating temperature range spans from -65°C to +175°C.

Single Zener Diodes Feature Summary

• Epitaxial construction for high stability
• Lead-free finish compliant with RoHS directives
• Hermetic glass case design

Single Zener Diodes Applications

• Voltage regulation circuits
• Reference voltage generation
• 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 replacement components meet all original electrical specifications and mechanical requirements before integration into designs.

Single Zener Diodes Selection Notes

Select surface mount equivalents such as the MMSZ52xxB series for modern designs. Ensure new selections match the required 33V rating, 500mW power dissipation, and DO-35 form factor constraints if space is limited.

Single Zener Diodes Part Context

Part of the 1N5221B-1N5267B series of 500mW Zener diodes. The suffix '-T' indicates tape and reel packaging for automated assembly. This series provides standard voltage tolerances for general-purpose applications.

Single Zener Diodes Replacement Considerations

Use MMSZ5257B or MMSZ5257BS series for surface mount replacements.

Single Zener Diodes FAQ

What is the status of the 1N5257B-T?

The part is obsolete and discontinued.

Does the -T suffix change the electrical function?

No, it only specifies tape and reel packaging.