1N5256B-T

Single Zener Diodes Overview

The Diodes Incorporated 1N5256B-T is a discontinued 30V epitaxial Zener diode housed in a DO-35 glass axial package. It features a nominal voltage of 30V with a ±5% tolerance and a maximum power dissipation of 500mW at 25°C ambient temperature. The device operates within a junction temperature range of -65°C to +175°C, exhibits a maximum reverse current of 0.1µA at 23V, and has a Zener impedance of 49Ω at the test current of 4.2mA.

Single Zener Diodes Feature Summary

• Epitaxial planar die construction for high stability
• Hermetic glass DO-35 case with solderable terminals
• Lead-free finish compliant with RoHS directives

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 Diodes Incorporated. Verify availability through authorized distributors or secondary markets. Confirm that replacement components meet all original electrical specifications and mechanical dimensions. Ensure compliance with project-specific environmental and safety requirements before integration.

Single Zener Diodes Selection Notes

Select verified substitute parts from the MMSZ52xxB series as recommended by the manufacturer. Evaluate alternative vendors offering equivalent DO-35 packaged Zener diodes. Compare thermal resistance and impedance characteristics against the original datasheet parameters. Validate that replacement packages match the required PCB footprint and lead spacing.

Single Zener Diodes Part Context

The 1N5256B belongs to the 1N5221B through 1N5267B series of 500mW Zener diodes. This family provides a wide selection of voltages from 2.4V to 75V in standard DO-35 packages. The specific suffix '-T' indicates tape and reel packaging for automated assembly processes.

Single Zener Diodes Replacement Considerations

Diodes Incorporated recommends using the MMSZ52xxB series as direct replacements. Cross-reference other manufacturers' 1N5256 equivalents ensuring identical voltage, power rating, and package type.