1N4732CE3/TR13

Overview

The Microsemi Corporation 1N4732CE3/TR13 is a silicon 1.0-watt Zener diode in the 1N4728AP thru 1N4764AP series, featuring a nominal voltage of 4.7V with a tight ±2% tolerance. It utilizes a plastic DO-41 (DO-204AL) axial-lead package and operates within a temperature range of -65°C to +150°C. The device provides voltage regulation over a broad operating current and temperature range, with a maximum dynamic impedance of 8 Ohms at a test current of 53 mA. It is moisture classified as Level 1 per IPC/JEDEC J-STD-020B.

Feature Summary

• Provides precise voltage regulation with a tight ±2% tolerance on nominal Zener voltage.
• Features flexible axial-lead mounting terminals for through-hole applications.
• Constructed with a void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards.
• RoHS compliant devices are available with an 'e3' suffix indicating annealed matte-Tin plating.

Applications

• Voltage regulation circuits requiring stable reference voltages.
• Protection against voltage spikes in electronic systems.
• Power supply output stabilization.

Procurement Notes

Verify that the ordering suffix includes both 'C' for the 2% tolerance and 'e3' for RoHS compliance. Confirm the 'TR13' designation matches the required tape and reel packaging standard. Ensure the component meets specific military screening requirements if applicable, as prefixes like MQ or MX may be necessary for JAN or JANTX levels.

Selection Notes

Select this component when a 4.7V reference with high precision is required in a standard axial package. The plastic construction offers lower thermal resistance compared to glass-body options. Consider the power derating curves for operation above 25°C ambient temperature. Verify compatibility with existing PCB footprints designed for DO-41 packages.

Part Context

This part belongs to the widely used 1N4728A through 1N4764A series of 1-watt Zener diodes. The series covers a voltage selection from 3.3 to 100 volts. The 'C' suffix indicates a tighter 2% tolerance compared to the standard 5% 'A' suffix. The 'e3' suffix denotes RoHS compliance with tin plating.

Replacement Considerations

Equivalent parts include other manufacturers' 1N4732A variants with matching 4.7V and 1W ratings. For tighter tolerances, verify availability of 1N4732C equivalents. Surface mount alternatives such as SMAJ4732A or MLL4732A are electrically equivalent but require different mounting considerations.