1N4732PE3/TR12

Overview

The Microsemi Corporation 1N4732PE3/TR12 is a silicon 1-watt Zener diode in the 1N4728AP-1N4764AP,e3 series. It provides voltage regulation with a nominal Zener voltage of 4.7 V and 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 8 Ohms at a test current of 53 mA. It utilizes a plastic DO-41 (DO-204AL) axial-lead package, classified as moisture Level 1, and includes an 'e3' suffix indicating RoHS compliance.

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 4.7 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. The 'P' indicates plastic construction, while 'e3' confirms RoHS compliance. Confirm the 'TR12' designation aligns with the specific tape and reel packaging requirements for your assembly process. Ensure compatibility with the manufacturer's current product lifecycle status before procurement.

Selection Notes

Select this component when a 4.7 V Zener voltage with ±5% tolerance is required in a 1-watt power rating. The plastic DO-41 package offers lower thermal resistance compared to glass-body options. Consider the specified maximum reverse current and dynamic impedance values to ensure they meet the circuit's leakage and stability requirements under expected operating conditions.

Part Context

This part belongs to the widely used 1N4728A through 1N4764A series of silicon Zener diodes manufactured by Microsemi. The series covers a voltage selection from 3.3 to 100 volts. The 'e3' suffix denotes RoHS-compliant devices available from the manufacturer, offering a plastic encapsulated alternative to traditional glass-body variants within the same JEDEC registered numbering system.

Replacement Considerations

Compatible substitutes include other manufacturers' 1N4732A or 1N4732AP equivalents in the DO-41 package. Verify that replacement parts maintain the 4.7 V nominal voltage, 1 W power dissipation, and ±5% tolerance specifications to ensure functional interchangeability.