1N4744AP/TR8

Overview

The Microchip Technology 1N4744AP/TR8 is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 15 V with a tight tolerance of ±5%. The device operates in a DO-41 axial through-hole package and supports a maximum power dissipation of 1 W. Key electrical characteristics include a test current of 17 mA, a maximum reverse leakage current of 5 µA, and a Zener impedance of 14 Ohms. It functions within an extended temperature range from -65 °C to +175 °C.

Feature Summary

• Provides precise voltage regulation with a 15 V nominal breakdown voltage and ±5% tolerance.
• Capable of handling 1 W power dissipation in a robust DO-41 axial leaded package.
• Engineered for high-temperature reliability with an operational range extending up to +175 °C.

Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection stages in electronic systems
• General-purpose voltage regulation in power supplies

Procurement Notes

Verify the specific suffix TR8 indicates tape-and-reel packaging when ordering. Confirm RoHS compliance status as documentation may vary by production batch. Ensure the DO-41 package dimensions match your PCB footprint requirements before finalizing procurement plans.

Selection Notes

Select this component when a 15 V regulated output is required with strict tolerance limits. The 1 W power rating suits moderate current applications. Verify that the 14 Ohm impedance meets your circuit's noise and stability specifications compared to higher or lower impedance alternatives.

Part Context

This part belongs to the standard 1N47xx series of Zener diodes manufactured by Microchip Technology. These components are widely used in discrete semiconductor designs for basic voltage clamping and reference tasks. The 1N4744AP variant specifically offers tighter voltage accuracy than standard commercial grades.

Replacement Considerations

Cross-reference with other manufacturers' 1N4744A parts for equivalent 15 V, 1 W specifications. Ensure any substitute matches the DO-41 package and ±5% tolerance requirement. Verify thermal performance ratings align with the original design constraints.