1N4739A-TAP

Overview

The Vishay General Semiconductor - Diodes Division 1N4739A-TAP is a silicon planar power Zener diode housed in the DO-41 (DO-204AL) axial through-hole package. It provides a nominal Zener voltage of 9.1 V with a standard tolerance of ±5%. The device supports a maximum power dissipation of 1.3 W and operates within a junction temperature range up to 175 °C. Key electrical characteristics include a test current of 28 mA, a maximum dynamic resistance of 700 Ω at low currents, and a reverse leakage current of 10 µA at 7 V.

Feature Summary

• Designed for use in stabilizing and clipping circuits requiring high power ratings
• Utilizes silicon planar technology for robust performance
• Features a glass passivated junction for environmental protection

Applications

• Voltage stabilization
• Clipping circuits

Procurement Notes

Verify that the ordering suffix '-TAP' corresponds to the specific ammopack packaging configuration containing 5000 units per reel as defined in the official Vishay datasheet. Confirm compliance with RoHS directives and material categorization standards by referencing the manufacturer's documentation before finalizing procurement orders.

Selection Notes

Select this component when a 9.1 V reference or regulation point is required in through-hole designs. Ensure the circuit can accommodate the specified 28 mA test current and that the thermal environment allows for the rated 1.3 W power dissipation without exceeding the 175 °C junction temperature limit.

Part Context

This part belongs to the 1N4728A through 1N4761A series of Zener diodes manufactured by Vishay Semiconductors. The series covers a wide voltage range from 3.3 V to 75 V, all sharing the same DO-41 package and general structural specifications while varying in specific voltage and current parameters.

Replacement Considerations

Other manufacturers produce equivalents under the 1N4739A designation. Verify that any substitute matches the 9.1 V nominal voltage, ±5% tolerance, and 1.3 W power rating to ensure functional compatibility.