1N4741CPE3/TR12

Overview

The Microchip Technology 1N4741CPE3/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 11 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, it offers flexible mounting terminals and void-free epoxy construction.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for standard 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 ordering suffix matches the required specifications: 'C' indicates a 2% voltage tolerance, 'P' denotes plastic construction, 'e3' confirms RoHS compliance, and 'TR12' specifies the tape and reel packaging format. Confirm the manufacturer origin, as this part number originates from the Microsemi Scottsdale Division, now part of Microchip Technology. Ensure the procurement documentation aligns with the specific JEDEC registration and screening requirements if applicable to your design.

Selection Notes

Select this component when a 11 V Zener voltage with high precision (+/- 2%) is required in a 1-watt power dissipation class. The plastic DO-41 package offers lower thermal resistance compared to glass-body options. Consider the maximum dynamic impedance of 8 Ohms and reverse current characteristics for circuit stability. Verify that the operating environment stays within the specified -65°C to +150°C range and that the lead length allows for proper heat dissipation according to the derating curves.

Part Context

This device belongs to the popular 1N4728A through 1N4764A series of 1.0-watt Zener diodes. The series provides an extensive voltage selection from 3.3 to 100 volts. While standard 'A' suffix devices offer 5% tolerance, the 'C' suffix variant ensures tighter +/- 2% accuracy. These plastic encapsulated Zeners are moisture classified as Level 1, eliminating the need for dry pack storage. The series is JEDEC registered and available in various military screening levels upon request.

Replacement Considerations

Compatible substitutes include other 1N4741 variants with matching electrical characteristics. For equivalent performance, consider parts with 11 V Zener voltage, 1 W power rating, and +/- 2% tolerance in a DO-41 package. Ensure any replacement maintains RoHS compliance if required by the assembly process.