1N4734PE3/TR8

Overview

The Microchip Technology 1N4734PE3/TR8 is a silicon 1.0-watt Zener diode in the 1N4728AP through 1N4764AP series, housed in a plastic DO-41 (DO-204AL) axial lead package. It provides voltage regulation at a nominal Zener voltage of 5.6 V with a standard tolerance of ±5%. The device operates within a temperature range of -65°C to +150°C and features a maximum dynamic impedance of 5 Ohms at a test current of 45 mA. It includes RoHS compliance indicated by the e3 suffix and 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 applications
• Constructed with a 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 5.6 V reference
• General purpose electronic equipment power supplies
• Industrial control systems operating in wide temperature environments

Procurement Notes

Verify that the ordering suffix TR8 corresponds to the specific tape and reel configuration required for automated assembly processes. Confirm that the e3 suffix indicates RoHS compliant annealed matte-Tin plating solderable per MIL-STD-750 method 2026. Ensure the component meets the moisture classification Level 1 requirement without dry pack constraints.

Selection Notes

Select this component when a 1-watt power dissipation rating and plastic encapsulation are preferred over glass-body options for lower thermal resistance. Consider the ±5% voltage tolerance suitable for general regulation tasks. Verify compatibility with FR4 PC board mounting conditions for steady-state power ratings.

Part Context

This part belongs to the JEDEC registered 1N4728A to 1N4764A series manufactured by Microsemi Scottsdale Division. The series offers extensive voltage selection from 3.3 to 100 volts. The plastic molded variant provides distinct mechanical advantages compared to glass-body counterparts while maintaining identical electrical characteristics for the same JEDEC number.

Replacement Considerations

Equivalent parts include other manufacturers' 1N4734A devices in DO-41 packages. Surface mount equivalents such as SMAJ4734A or MLL4734A may be considered if layout changes are permitted.