1N4744A-TR

Overview

The Vishay 1N4744A-TR is a silicon planar power Zener diode in the DO-204AL (DO-41) axial through-hole package. It provides a nominal Zener voltage of 15 V with a standard tolerance of ±5%. The device supports a maximum power dissipation of 1300 mW and operates within a junction temperature range up to 175 °C. Electrical characteristics include a test current of 17 mA, a maximum dynamic resistance of 14 Ω at the test current, and a reverse leakage current of 5 µA at 11.4 V. The forward voltage is specified as 1.2 V maximum at a forward current of 200 mA.

Feature Summary

• Designed for use in stabilizing and clipping circuits requiring high power ratings
• Utilizes silicon planar technology for robust voltage regulation
• Features a standard Zener voltage tolerance of ±5%

Applications

• Voltage stabilization
• Clipping circuits

Procurement Notes

Verify that the ordering code suffix matches the required packaging format, such as TR for taped units on a 14-inch reel or TAP for ammopack configurations. Confirm compliance requirements against specific regional standards, including RoHS3 and REACH status, prior to procurement. Ensure the component meets AEC-Q101 automotive qualification if intended for automotive-grade applications.

Selection Notes

Select this component when a 15 V reference point is required with a ±5% tolerance. Consider the 1300 mW power dissipation capability and the thermal resistance of 110 K/W for heat management. Verify that the operating ambient temperature remains within the -65 °C to +175 °C storage range and that the junction temperature does not exceed 175 °C during operation.

Part Context

This part belongs to the Vishay 1N4728A to 1N4761A series of Zener diodes. The series covers a wide Zener voltage range from 3.3 V to 75 V. All devices in this family share the same DO-41 package dimensions and similar electrical testing conditions, allowing for consistent design integration across different voltage requirements.

Replacement Considerations

Substitute parts must match the 15 V nominal Zener voltage, ±5% tolerance, and 1.3 W power rating. Verify that alternative components utilize the DO-41 axial package and meet the same thermal and electrical specifications defined in the datasheet.