1N5242B-T

Single Zener Diodes Overview

The Diodes Incorporated 1N5242B-T is a discontinued epitaxial Zener diode with a nominal voltage of 12 V and a tolerance of ±5%. It features a maximum power dissipation of 500 mW and operates within a temperature range of -65°C to +175°C. The device utilizes a DO-35 glass case and is supplied in tape and reel packaging. Electrical characteristics include a maximum Zener impedance of 30 Ω at a test current of 20 mA, a forward voltage of 1.1 V at 200 mA, and a reverse leakage current of 1 µA at 9.1 V.

Single Zener Diodes Feature Summary

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

Single Zener Diodes Applications

• Voltage regulation circuits
• Reference voltage sources
• Surge protection applications

Single Zener Diodes Procurement Notes

This component is officially marked as obsolete and discontinued by the manufacturer. Sourcing new units from authorized channels is not possible. Buyers must verify the authenticity and condition of any available surplus stock carefully. Procurement should focus on identifying valid replacement components rather than acquiring this specific part number.

Single Zener Diodes Selection Notes

Designers requiring a 12 V Zener diode should transition to active alternatives. The datasheet explicitly recommends using the MMSZ52xxB series as surface mount equivalents. Selection criteria should prioritize matching the required voltage tolerance, power dissipation capabilities, and thermal resistance specifications to ensure circuit reliability.

Single Zener Diodes Part Context

The 1N5242B belongs to the 1N5221B through 1N5267B family of 500 mW epitaxial Zener diodes manufactured by Diodes Incorporated. This series covers a wide range of voltage ratings from 2.4 V to 75 V. The 1N5242B specifically addresses the 12 V segment within this lineup, utilizing standard axial leaded packaging.

Single Zener Diodes Replacement Considerations

The official datasheet directs users to use the MMSZ52xxB series as replacements. These are surface mount equivalents designed to supersede the obsolete axial leaded parts.

Single Zener Diodes FAQ

What is the status of the 1N5242B-T?

The part is officially obsolete and discontinued by Diodes Incorporated.

What is the recommended replacement for this component?

The datasheet specifies using the MMSZ52xxB series as the direct replacement.