1N5249B-TAP

Single Zener Diodes Overview

The Vishay 1N5249B-TAP is a silicon planar power Zener diode in the 1N5221 to 1N5267 series. It provides a nominal Zener voltage of 19 V with a standard tolerance of ±5%. The device operates at a test current of 6.6 mA and dissipates up to 500 mW. Packaged in DO-35 (DO-204AH) axial through-hole housing, it supports junction temperatures up to 175 °C.

Single Zener Diodes Feature Summary

• Utilizes silicon planar technology for robust voltage regulation
• Features a standard ±5% Zener voltage tolerance designated by the 'B' suffix
• Designed for high thermal stability with a maximum junction temperature of 175 °C

Single Zener Diodes Applications

• Voltage stabilization circuits
• Reference voltage generation
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify the specific ordering code matches the required tolerance and packaging format. Confirm that the DO-35 lead spacing aligns with the target printed circuit board layout. Ensure the application environment remains within the specified thermal equilibrium limits to maintain accurate Zener voltage performance.

Single Zener Diodes Selection Notes

Select this component when a precise 19 V reference is required in an axial package. Consider the dynamic resistance and temperature coefficient characteristics for precision applications. Evaluate the 500 mW power dissipation capability against the expected operating current to ensure safe thermal margins.

Single Zener Diodes Part Context

This part belongs to the Vishay 1N5221 to 1N5267 series of small signal Zener diodes. The series covers a wide range of nominal voltages from 2.4 V to 75 V. These components are widely used in general-purpose electronic designs requiring reliable voltage clamping or regulation.

Single Zener Diodes Replacement Considerations

Cross-reference other manufacturers offering 19 V Zener diodes in the DO-35 package. Verify that alternative parts meet the same 500 mW power rating and ±5% tolerance specifications to ensure functional compatibility.