1N4732CPE3/TR12

Overview

The Microsemi Corporation 1N4732CPE3/TR12 is a silicon 1.0-watt Zener diode in the 1N4728AP through 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 tight tolerance of ±2%, indicated by the 'C' suffix. The device operates within a temperature range of -65°C to +150°C and features RoHS compliance via the 'e3' suffix. Packaged in tape and reel format per EIA-296 standards as denoted by the 'TR12' suffix, it offers flexible mounting terminals and void-free transfer molded epoxy construction.

Feature Summary

• Provides precise voltage regulation with a standard ±2% tolerance on nominal Zener voltage
• Features flexible axial-lead mounting terminals for standard PCB integration
• Constructed with a void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards
• RoHS compliant with annealed matte-Tin plating solderable per MIL-STD-750

Applications

• Voltage regulation over broad operating current and temperature ranges
• General purpose electronic circuits requiring stable reference voltages
• Protection against voltage spikes in power supply lines

Procurement Notes

Verify that the ordering suffix accurately reflects the required specifications before procurement. The 'C' suffix confirms a ±2% voltage tolerance, while 'P' indicates plastic encapsulation and 'e3' denotes RoHS compliance. Confirm the 'TR12' suffix matches the required tape and reel packaging format. Ensure compatibility with the specified DO-41 package dimensions and lead spacing for your assembly process.

Selection Notes

Select this component when a tight ±2% voltage tolerance is required for the 4.7 V Zener voltage point within the 1N4732 series. The plastic DO-41 package offers lower thermal resistance compared to glass-body options. Consider the tape and reel packaging if automated surface or through-hole mounting is utilized. Verify that the 1.0 W power dissipation rating and -65°C to +150°C operating temperature range meet the environmental requirements of the target application.

Part Context

This part belongs to the widely used JEDEC registered 1N4728A through 1N4764A series of 1.0 Watt Zener diodes manufactured by Microsemi's Scottsdale Division. The series covers a voltage selection from 3.3 to 100 volts. While standard versions offer 5% or 10% tolerances, the 'C' suffix variant specifically addresses applications demanding tighter precision. The plastic construction distinguishes it from the glass-body counterparts available in the same family.

Replacement Considerations

Equivalent parts include other manufacturers' 1N4732C devices in DO-41 packages. For higher reliability needs, military screened variants such as JAN1N4732C are available with specific prefixes. Surface mount equivalents like SMAJ4732A or MLL4732A may be considered if footprint reduction is necessary, though mechanical differences apply.