1N5229B-TAP

Single Zener Diodes Overview

The Vishay 1N5229B-TAP is a silicon planar power Zener diode in the 1N5221 to 1N5267 series, housed in an axial DO-35 (DO-204AH) package. It provides a nominal Zener voltage of 4.3 V with a standard tolerance of ±5%. The device operates at a test current of 20 mA and dissipates up to 500 mW of power. Key electrical characteristics include a maximum reverse leakage current of 5 µA at 1 V, a typical dynamic resistance of 22 Ω at 20 mA, and a positive temperature coefficient of 0.055 %/K.

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 junction temperature rating of 175 °C

Single Zener Diodes Applications

• Voltage stabilization circuits
• Reference voltage generation
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify that the ordering code includes the -TAP suffix to confirm the specific ammopack tape configuration. Ensure the required Zener voltage tolerance aligns with the standard ±5% specification associated with the 'B' designation. Confirm compliance with material categorization definitions via the manufacturer's documentation before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a 4.3 V reference with ±5% accuracy is required in an axial leaded package. The 500 mW power dissipation capability supports moderate current applications. Consider the positive temperature coefficient for designs where voltage increases with temperature are acceptable or manageable within the system constraints.

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. The 1N5229 variant specifically targets the 4.3 V segment, bridging lower voltage diodes like the 1N5228 (3.9 V) and higher voltage units like the 1N5230 (4.7 V).

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers' 1N5229 equivalents. Verify that replacement parts match the 4.3 V nominal voltage, ±5% tolerance, and DO-35 package dimensions. Ensure thermal resistance and maximum power dissipation ratings meet or exceed the original specifications.