1N4732CPE3/TR8

Overview

The Microsemi Corporation 1N4732CPE3/TR8 is a silicon 1-watt Zener diode in the JEDEC registered 1N4728A to 1N4764AP series. It provides voltage regulation with a nominal Zener voltage of 4.7 V and a tight tolerance of ±2%. The device features a plastic DO-41 (DO-204AL) axial-lead package, RoHS compliance indicated by the e3 suffix, and tape-and-reel packaging per EIA-296 standards. Maximum ratings include a power dissipation of 1.0 watts at 25°C, an operating temperature range from -65°C to +150°C, and a maximum dynamic impedance of 8 ohms at a test current of 53 mA.

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 (ESD) per MIL-STD-750 Method 1020

Applications

• Voltage regulation circuits requiring precise tolerance
• Power supply reference voltage generation
• Overvoltage protection in electronic systems

Procurement Notes

Verify that the component matches the specific 4.7 V nominal voltage and ±2% tolerance requirements. Confirm the presence of the 'e3' suffix for RoHS compliance and the 'TR' suffix for tape-and-reel packaging. Ensure the manufacturer designation aligns with Microsemi Corporation specifications before finalizing procurement orders.

Selection Notes

Select this component when a 4.7 V Zener voltage with ±2% tolerance is required. The plastic DO-41 package offers lower thermal resistance compared to glass-body options. Consider the 1.0-watt steady-state power dissipation capability and the specified operating temperature range for circuit design compatibility.

Part Context

This part belongs to the popular 1N4728AP through 1N4764AP 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. The C suffix specifically denotes the tighter ±2% tolerance available within this product line.

Replacement Considerations

Surface mount equivalents are available as SMAJ4732A or MLL4732A. Other military screening levels can be obtained by adding prefixes such as MQ, MX, MV, or MSP to the base part number.

FAQ

What does the 'C' suffix indicate in the part number?

The 'C' suffix indicates a standard voltage tolerance of plus or minus 2%.

Is the device sensitive to electrostatic discharge?

No, the device is non-sensitive to ESD per MIL-STD-750 Method 1020.