1N4747CPE3/TR12

Overview

The Microchip Technology 1N4747CPE3/TR12 is a silicon 1.0-watt Zener diode in a plastic DO-41 axial lead package. It provides voltage regulation at a nominal Zener voltage of 20V with a tight tolerance of ±2%. The device operates within a temperature range of -65°C to +150°C and features RoHS compliant tin plating. Packaged in tape and reel format, it offers low thermal resistance suitable for high-reliability applications.

Feature Summary

• Provides precise voltage regulation with ±2% tolerance
• Features plastic encapsulation for lower thermal resistance
• Includes flexible axial-lead mounting terminals
• Operates reliably across a broad temperature range

Applications

• Voltage reference circuits
• Overvoltage protection systems
• Power supply regulation

Procurement Notes

Verify the specific suffix configuration against official datasheets to confirm tolerance and packaging details. Ensure compatibility with existing assembly processes regarding the axial lead form factor and tape-and-reel handling requirements.

Selection Notes

Select this component when a stable 20V reference with tighter than standard tolerance is required. The plastic construction offers better thermal performance compared to glass equivalents. Verify that the 1W power dissipation rating meets the circuit's thermal management needs.

Part Context

This part belongs to the 1N4728A through 1N4764A series of 1-watt Zener diodes manufactured by Microsemi (now Microchip). The series covers a wide voltage range from 3.3V to 100V. The 'C' suffix denotes the 2% voltage tolerance, while 'P' indicates the plastic DO-41 package.

Replacement Considerations

Equivalent parts include other 20V Zener diodes with ±2% tolerance and 1W power rating in DO-41 packages. Verify electrical characteristics and physical dimensions before substitution.