1N4743AE3/TR13

Overview

The Microchip Technology 1N4743AE3/TR13 is a single silicon Zener diode housed in the DO-41 axial leaded package. It provides a nominal Zener voltage of 13 V with a tolerance of ±5%. The device dissipates up to 1 W of power and operates within a temperature range of -65 °C to +150 °C. Key electrical characteristics include a maximum reverse leakage current of 5 µA, a Zener impedance of 8 Ω, and a test current of 23 mA.

Feature Summary

• Provides stable voltage regulation using a single unidirectional silicon junction
• Features hermetic sealed glass construction for environmental protection
• Supports high thermal stability with an extended operating temperature range

Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in electronic systems
• General purpose clipping and clamping applications

Procurement Notes

Verify the specific suffix configuration against official Microchip documentation to ensure compatibility with required regulatory standards and packaging formats. Confirm that the component meets all necessary industry compliance requirements before integration into final designs.

Selection Notes

Select this component when a robust axial leaded Zener diode is required for high-power dissipation scenarios. Ensure the circuit design accommodates the specified test current and impedance values to maintain accurate voltage regulation under varying load conditions.

Part Context

This part belongs to the standard 1N47xx series of 1-watt Zener diodes manufactured by Microchip Technology. The E3 suffix indicates lead-free composition, while TR13 specifies the reel packaging format used for automated assembly processes.

Replacement Considerations

Cross-reference with other manufacturers offering identical 13V 1W DO-41 specifications. Verify pinout compatibility and thermal resistance parameters to ensure seamless substitution without redesigning the host circuit board.