1N4751PE3/TR12

Overview

The Microchip Technology 1N4751PE3/TR12 is a silicon 1-watt Zener diode in the 1N4728AP through 1N4764AP series. It provides voltage regulation at a nominal Zener voltage of 30 V with a standard tolerance of ±10%. The device operates within a temperature range of -65°C to +150°C and features a DO-41 axial lead package. Electrical characteristics include a maximum dynamic impedance of 40 Ohms at a test current of 8.5 mA, a maximum reverse current of 30 µA, and a forward voltage of 1.2 V maximum at 200 mA.

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 (ESD) 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 the specific suffix configuration against official datasheets to confirm RoHS compliance and packaging type. The TR12 designation indicates tape and reel packaging; ensure compatibility with automated assembly equipment. Confirm that the manufacturer source aligns with current Microchip Technology or authorized distributor records for authenticity.

Selection Notes

Select this component when a 30 V Zener voltage with ±10% tolerance is required in a plastic DO-41 package. Consider the 1 W power dissipation rating and thermal resistance values for heat management. Ensure the operating environment stays within the specified -65°C to +150°C range and verify lead length requirements for soldering processes.

Part Context

This part belongs to the JEDEC registered 1N4728A to 1N4764A series of silicon 1-watt Zener diodes. The 'P' suffix denotes plastic construction, which offers lower thermal resistance compared to glass-body options. The 'e3' suffix indicates RoHS compliance with annealed matte-tin plating on terminals. The series covers voltages from 3.3 V to 100 V with various tolerance options.

Replacement Considerations

Compatible replacements include other 1N4751 variants such as 1N4751A or 1N4751AP if tolerance and package match. Surface mount equivalents like SMAJ4751A are available for space-constrained designs. Verify that substitute parts meet the same 1 W power rating and 30 V Zener specification.