1N4732CP/TR8

Overview

The Microsemi Corporation 1N4732CP/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 with a TR suffix indicating tape and reel packaging. It provides voltage regulation at a nominal Zener voltage of 4.7 V with a tight tolerance of ±2%, as indicated by the 'C' suffix. The device operates within a temperature range of -65°C to +150°C and features flexible mounting terminals.

Feature Summary

• Provides precise voltage regulation with a tight ±2% tolerance on the nominal Zener voltage.
• Features a void-free transfer molded thermosetting epoxy body that meets UL94V-0 standards.
• Offers lower thermal resistance compared to glass-body options for the same JEDEC part numbers.
• Includes flexible axial-lead terminals suitable for standard through-hole mounting.

Applications

• Voltage regulation over broad operating current and temperature ranges
• High-density circuit designs requiring low parasitic characteristics
• Applications necessitating specific tight voltage tolerances

Procurement Notes

Verify the exact ordering suffix against official Microsemi documentation to confirm the specific tolerance and packaging configuration. Confirm RoHS compliance status if required, as standard versions may differ from e3 variants. Ensure the TR suffix matches the intended automated assembly requirements.

Selection Notes

Select this component when a 4.7 V reference requires tighter stability than standard 5% or 10% devices offer. The plastic construction provides better thermal performance than glass equivalents. Verify that the 1W power dissipation rating aligns with the thermal management capabilities of the target PCB layout.

Part Context

This part belongs to the widely used 1N4728A through 1N4764A series of 1-watt Zener diodes registered by JEDEC. The series covers an extensive voltage selection from 3.3 V to 100 V. The 'P' suffix designates the plastic encapsulated version, while the 'TR' suffix indicates tape and reel packaging for automated processing.

Replacement Considerations

Surface mount equivalents are available as SMAJ4732A and MLL4732A. Other manufacturers produce electrically equivalent parts under the base number 1N4732, but verify pinout and tolerance specifications match the original design requirements.