1N4732APE3/TR12

Overview

The Microsemi Corporation 1N4732APE3/TR12 is a silicon 1.0-watt Zener diode in the 1N4728AP to 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 TR.

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 1.0 watt power dissipation
• General-purpose electronic equipment utilizing axial-lead components
• Power supply reference designs within specified thermal limits

Procurement Notes

Verify that the specific ordering suffix matches the required configuration, as variations exist for military screening prefixes and lead plating types. Confirm RoHS compliance status based on the presence of the e3 suffix. Ensure the tape-and-reel specification aligns with automated assembly requirements. Cross-reference datasheet revision C for accurate electrical parameters before finalizing procurement specifications.

Selection Notes

Select this component when a 4.7 V regulation point is required with a 5% tolerance. The plastic DO-41 package offers lower thermal resistance compared to glass-body options. Consider the 1.0-watt power rating and derating curves for high-temperature environments. Verify compatibility with existing PCB footprints designed for DO-204AL packages.

Part Context

This part belongs to the widely used 1N4728A through 1N4764A series of silicon Zener diodes manufactured by Microsemi's Scottsdale Division. The series covers voltages from 3.3 V to 100 V. The 'P' suffix denotes plastic construction, while 'e3' indicates RoHS-compliant annealed matte-tin plating. The 'TR' suffix specifies tape-and-reel packaging.

Replacement Considerations

Surface mount equivalents are available as SMAJ4732A or MLL4732A. Glass-body versions use the G suffix instead of P. Military screening levels require adding MQ, MX, MV, or MSP prefixes.