1N4732PE3/TR8

Overview

The Microsemi Corporation 1N4732PE3/TR8 is a silicon 1.0-watt Zener diode in the 1N4728AP-1N4764AP series, housed in a plastic DO-204AL (DO-41) axial lead package. It provides voltage regulation with a nominal Zener voltage of 4.7 V and a standard tolerance of ±5%. The device features a maximum dynamic impedance of 8 Ohms at a test current of 53 mA and a maximum reverse leakage current of 10 µA at 1 V. It operates within a temperature range of -65°C to +150°C and includes RoHS compliance indicated by the e3 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 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
• Reference voltage sources
• Overvoltage protection

Procurement Notes

Verify that the specific ordering suffix matches the required specifications. Confirm the presence of the 'e3' suffix indicates RoHS compliant annealed matte-Tin plating. Ensure the 'TR' suffix corresponds to the Tape & Reel packaging option as defined by EIA-296 standards. Cross-reference the part number against the manufacturer's official documentation to confirm availability and exact electrical tolerances.

Selection Notes

Select this component when a 4.7 V regulation point is required with a 5% tolerance. The plastic encapsulation offers lower thermal resistance compared to glass-body options. Consider the axial lead format for manual assembly or PCB designs requiring through-hole mounting. Verify power dissipation requirements against the derating curves provided in the datasheet for ambient temperatures exceeding 25°C.

Part Context

This component belongs to the 1N4728AP thru 1N4764AP series of silicon Zener diodes manufactured by Microsemi's Scottsdale Division. The series covers a voltage selection from 3.3 to 100 volts. The 'P' suffix designates the plastic construction variant, while the 'e3' suffix denotes RoHS compliance. These devices are JEDEC registered and offer extensive voltage selection for general-purpose regulation tasks.

Replacement Considerations

Equivalent parts include other manufacturers' 1N4732A or 1N4732AP variants. For surface mount needs, SMAJ4732A or MLL4732A are available equivalents. Glass-body versions like 1N4732G share the same electrical characteristics but differ in thermal resistance and package material.