1N5248B-T

Single Zener Diodes Overview

The Diodes Incorporated 1N5248B-T is a discontinued 500mW epitaxial Zener diode with an 18V nominal voltage and ±5% tolerance. It operates within a temperature range of -65°C to +175°C, featuring a DO-35 glass axial package. The device exhibits a maximum Zener impedance of 21Ω at a test current of 7.0mA and a reverse leakage current of 0.1µA at 14V. Thermal resistance from junction to ambient air is rated at 300°C/W.

Single Zener Diodes Feature Summary

• Epitaxial construction for high stability
• Hermetic glass DO-35 package
• 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 marked as obsolete and discontinued by the manufacturer. Procurement should be avoided for new designs. Verify end-of-life status through official channels before considering any remaining stock for legacy maintenance or repair purposes.

Single Zener Diodes Selection Notes

Designers must transition to surface mount equivalents such as the MMSZ52xxB series. These modern replacements offer similar electrical characteristics while utilizing smaller form factors suitable for contemporary automated assembly processes.

Single Zener Diodes Part Context

The 1N5248B belongs to the 1N5221B through 1N5267B family of 500mW Zener diodes. This series provides a wide range of standard voltage values in a traditional axial leaded package, historically serving as a baseline for discrete voltage reference applications.

Single Zener Diodes Replacement Considerations

Use MMSZ52xxB series components as direct functional replacements. Ensure the selected surface mount variant matches the required 18V specification and power dissipation limits.