1N5249B-T

Single Zener Diodes Overview

The Diodes Incorporated 1N5249B-T is an obsolete epitaxial Zener diode with a nominal voltage of 19 V and a tolerance of ±5%. It features a maximum power dissipation of 500 mW, a reverse leakage current of 0.1 µA at 14 V, and a maximum Zener impedance of 23 Ω. The device operates within a temperature range of -65°C to +175°C and utilizes a DO-35 glass axial package.

Single Zener Diodes Feature Summary

• Epitaxial planar die construction for high stability
• Hermetic glass DO-35 package design
• 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 discontinued by the manufacturer. Verify availability through authorized distributors or secondary markets. Confirm that replacement units match original specifications, as obsolescence may necessitate design modifications or alternative sourcing strategies.

Single Zener Diodes Selection Notes

Select this part only if legacy compatibility is required. Note that surface mount equivalents are available from the same manufacturer family. Ensure thermal derating is applied above 75°C to maintain safe junction temperatures during operation.

Single Zener Diodes Part Context

Part of the 1N5221B through 1N5267B series of 500mW Zener diodes. The suffix '-T' indicates tape and reel packaging containing 10,000 units per reel. This specific variant is no longer in active production.

Single Zener Diodes Replacement Considerations

MMSZ52xxB series (Surface Mount)

Single Zener Diodes FAQ

What is the maximum operating temperature?

The maximum operating and storage temperature range is up to +175°C.

Is the device lead-free?

Yes, the device has a lead-free finish and is compliant with EU RoHS directives.