1N4751APE3/TR12

Overview

The Microchip Technology 1N4751APE3/TR12 is a silicon planar 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 30 V with a standard tolerance of ±10%. The device dissipates up to 1.0 W at 25°C and operates within a temperature range of -65°C to +150°C. Key electrical characteristics include a maximum dynamic impedance of 40 Ω at a test current of 8.5 mA, a maximum reverse leakage current of 5 µA at 22.8 V, and a forward voltage drop 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 standard 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 in power supply circuits
• Overvoltage protection for sensitive electronic components
• Reference voltage generation in analog signal processing

Procurement Notes

Verify that the ordering suffix TR12 corresponds to the tape and reel packaging format as specified by EIA-296 standards. Confirm RoHS compliance status associated with the e3 suffix. Ensure the component meets the required JEDEC registration for the 1N4751A type number before finalizing procurement specifications.

Selection Notes

Select this component when a 30 V regulation point is required with a ±10% tolerance. Consider the 1.0 W power dissipation capability and the thermal resistance of 45 °C/W junction-to-lead. Verify compatibility with the DO-41 package dimensions and lead spacing for the target printed circuit board layout.

Part Context

This part belongs to the widely used 1N4728A through 1N4764A series of 1.0 Watt Zener diodes. The 'P' suffix indicates plastic construction, which offers lower thermal resistance compared to glass-body options. The 'e3' suffix designates RoHS compliant devices with annealed matte-tin plating on the terminals.

Replacement Considerations

Compatible replacements include other manufacturers' equivalents of the 1N4751A or 1N4751AP within the same 1W, 30V, DO-41 specification class.