1N4744PE3/TR8

Overview

The Microchip Technology 1N4744PE3/TR8 is a silicon planar power Zener diode housed in a plastic DO-41 axial lead package. It provides voltage regulation with a nominal Zener voltage of 15 V and a standard tolerance of ±5%. The device supports a maximum power dissipation of 1.0 W at 25°C, with a test current of 17 mA and a maximum dynamic impedance of 14 Ohms. It operates within a temperature range of -65°C to +150°C and features RoHS compliant annealed matte-tin plating.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for through-hole applications
• Constructed with void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards
• Non-sensitive to electrostatic discharge per MIL-STD-750 Method 1020

Applications

• Voltage regulation circuits requiring 15 V reference
• Power supply protection and clamping applications
• General purpose electronic equipment utilizing axial-lead components

Procurement Notes

Verify the specific manufacturer origin, as the 1N4744 series has been produced by multiple entities including Microsemi and Microchip Technology. Confirm that the 'e3' suffix indicates RoHS compliance and the 'TR' suffix denotes tape and reel packaging. Ensure the component meets the required JEDEC registration standards for the intended application environment.

Selection Notes

Select this component when a 15 V Zener voltage with 5% tolerance is required in a 1 W power rating. The plastic DO-41 package offers lower thermal resistance compared to glass-body options. Consider the maximum reverse current and dynamic impedance specifications to ensure compatibility with the circuit's leakage and stability requirements.

Part Context

This part belongs to the 1N4728AP through 1N4764AP series of 1.0 Watt Zener diodes. The series covers a voltage selection from 3.3 to 100 volts. The 'P' suffix designates plastic construction, while the 'A' suffix indicates the 5% voltage tolerance standard for this family of devices.

Replacement Considerations

Compatible substitutes include other 1N4744 variants such as 1N4744A or 1N4744P, provided they match the 15 V Zener voltage, 1 W power rating, and DO-41 package dimensions. Verify electrical characteristics like dynamic impedance and reverse current before substitution.