1N4731A-TAP

Overview

The Vishay 1N4731A-TAP is a silicon planar power Zener diode in the 1N4728A to 1N4761A series, housed in an axial DO-41 (DO-204AL) package. It provides a nominal Zener voltage of 4.3 V with a standard tolerance of ±5%. The device dissipates up to 1.3 W at thermal equilibrium and operates within a junction temperature range of -65 °C to +175 °C. Electrical characteristics include a maximum reverse leakage current of 10 µA at 1 V, a dynamic resistance of 9 Ω at a test current of 58 mA, and a forward voltage of 1.2 V at 200 mA.

Feature Summary

• Silicon planar construction designed for high-power stabilization and clipping applications
• Standardized Zener voltage tolerance of ±5% across the series
• Hermetically sealed glass encapsulation providing robust environmental protection

Applications

• Voltage stabilization circuits
• Signal clipping applications

Procurement Notes

Verify that the ordering suffix 'TAP' corresponds to the specific taped-and-reeled or ammopack configuration required for automated assembly processes. Confirm compliance with RoHS directives and material categorization standards as defined by the manufacturer's documentation before finalizing procurement specifications.

Selection Notes

Select this component when a 4.3 V regulation point is required with a 1.3 W power dissipation capacity. Ensure the application environment remains within the specified -65 °C to +175 °C operating range. Verify that the DO-41 through-hole package dimensions align with the target PCB layout constraints.

Part Context

This part belongs to the Vishay 1N4728A to 1N4761A series of single Zener diodes. These components are manufactured using silicon planar technology and are available in both plastic and hermetically sealed glass body options. The series covers a wide voltage range from 3.3 V to 75 V, serving as a foundational discrete semiconductor solution for general-purpose voltage regulation tasks.

Replacement Considerations

Direct substitutes include the 1N4731A-TR variant from Vishay, which shares identical electrical parameters but utilizes reel packaging instead of the TAP format. Other manufacturers producing JEDEC-compliant 1N4731A devices in the DO-41 package may also serve as functional equivalents.