1N4739P/TR8

Overview

The Microchip Technology 1N4739P/TR8 is a silicon Zener diode with a nominal voltage of 9.1 V and a power dissipation rating of 1 W. It features a standard tolerance of ±10% and operates within a temperature range of -65°C to +150°C. The device utilizes a DO-41 axial lead package and includes a TR suffix indicating tape and reel packaging.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for through-hole integration
• Constructed with a void-free transfer molded thermosetting epoxy body

Applications

• Voltage regulation in electronic circuits
• Overvoltage protection applications
• Reference voltage generation

Procurement Notes

Verify the specific manufacturer designation, as historical records indicate Microsemi production for this part number. Confirm RoHS compliance status by checking for an e3 suffix, as the base P suffix does not guarantee it. Ensure the TR suffix matches the required tape and reel specifications for automated assembly processes.

Selection Notes

Select this component when a 9.1 V reference with 1 W capability is required. The plastic encapsulation offers lower thermal resistance compared to glass-body options. Verify that the ±10% tolerance meets circuit requirements, as tighter tolerances require different suffix designations.

Part Context

This component belongs to the 1N4728AP through 1N4764AP series of 1.0 watt Zener diodes. The series provides extensive voltage selection from 3.3 to 100 volts. The 'P' suffix specifically identifies the plastic encapsulated variant within this JEDEC registered lineup.

Replacement Considerations

Surface mount equivalents are available as SMAJ4739A or MLL4739A. Glass-body hermetic variants exist under the G suffix designation.