1N4751PE3/TR8

Overview

The Microchip Technology 1N4751PE3/TR8 is a silicon 1.0-watt Zener diode housed in a plastic DO-204AL (DO-41) axial-lead package. It provides voltage regulation with a nominal Zener voltage of 30 V and a standard tolerance of ±5%. The device operates within a temperature range of -65°C to +150°C, featuring a maximum reverse current of 5 µA at 22.8 V and a dynamic impedance of 40 Ohms at the test current of 8.5 mA. It includes RoHS compliance indicated by the e3 suffix and tape-and-reel packaging specified by the TR8 suffix.

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 30 V reference
• Power supply protection and clamping applications
• General-purpose electronic equipment utilizing axial-lead components

Procurement Notes

Verify that the ordering suffix matches the required specifications: 'P' indicates plastic construction, 'e3' confirms RoHS compliance, and 'TR8' denotes the specific tape and reel packaging format. Confirm the manufacturer source is Microchip or authorized distributor to ensure authenticity. Check datasheet revisions for any updates to electrical characteristics or mechanical dimensions before finalizing procurement orders.

Selection Notes

Select this component when a 30 V Zener voltage with 5% tolerance is required in a 1 W power dissipation class. The plastic DO-41 package offers lower thermal resistance compared to glass-body options. Ensure the application environment stays within the -65°C to +150°C operating range. Consider the dynamic impedance and knee characteristics if precise regulation at low currents is critical for the design.

Part Context

This part belongs to the 1N4728AP through 1N4764AP series of silicon 1-watt Zener diodes manufactured by Microsemi (now Microchip). The series covers a wide voltage selection from 3.3 to 100 volts. The 1N4751 variant specifically targets the 30 V segment of this extensive lineup, offering a balance of performance and availability for general industrial and commercial electronics.

Replacement Considerations

Compatible substitutes include other 1N4751 variants with identical electrical ratings but different packaging, such as the glass-body 1N4751G. Surface mount equivalents like SMAJ4751A are available for designs transitioning to SMT. Verify that any replacement maintains the same 30 V nominal voltage, 1 W power rating, and ±5% tolerance.