1N4732APE3/TR8

Overview

The Microsemi Corporation 1N4732APE3/TR8 is a silicon 1.0-watt Zener diode in the 1N4728AP-1N4764AP series, housed in a plastic DO-41 (DO-204AL) axial-lead package. 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 includes RoHS compliance via the 'e3' suffix and tape-and-reel packaging indicated 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 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 specific ordering suffix matches the required configuration, as the 'P' indicates plastic construction and 'e3' denotes RoHS compliance. Confirm the 'TR8' suffix aligns with the desired tape-and-reel packaging format. Ensure compatibility with existing assembly processes regarding lead plating and moisture sensitivity classification Level 1 requirements.

Selection Notes

Select this component when a 4.7 V Zener voltage with ±5% tolerance is required in a plastic axial-lead package. Consider the 1 W power dissipation rating and thermal resistance characteristics for heat management. Verify that the operating temperature range of -65°C to +150°C meets environmental specifications. Compare against glass-body options if lower thermal resistance is not critical.

Part Context

This part belongs to the Microsemi Scottsdale Division 1N4728AP thru 1N4764AP series of silicon 1-watt Zener diodes. The series offers extensive voltage selection from 3.3 to 100 volts. The 'A' suffix specifies a 5% tolerance, while the 'P' suffix designates the plastic encapsulated version, which offers lower thermal resistance compared to glass-body alternatives.

Replacement Considerations

Equivalent parts include other manufacturers' 1N4732A or 1N4732AP variants. For RoHS compliance, ensure replacements carry an 'e3' suffix or equivalent designation. Verify that substitute packages match the DO-41/DO-204AL form factor and that electrical parameters such as Zener voltage and power dissipation are compatible.