1N4744CE3/TR13

Overview

The Microchip Technology 1N4744CE3/TR13 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 15 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-compliant annealed matte-tin plating. Packaged in tape and reel format per EIA-296 standards, it offers flexible mounting terminals and void-free transfer molded epoxy construction.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features tight ±2% voltage tolerance for precision applications
• Constructed with void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards
• Offers flexible axial-lead mounting terminals compatible with standard PCB layouts

Applications

• Voltage reference circuits requiring precise regulation
• Power supply protection against overvoltage transients
• General-purpose voltage clamping in electronic systems

Procurement Notes

Verify the specific manufacturer origin, as the datasheet references Microsemi Scottsdale Division while the model prefix indicates Microchip Technology. Confirm that the TR13 suffix corresponds to the specified tape and reel packaging configuration. Ensure compliance requirements match the RoHS-compliant annealed matte-tin plating described in the mechanical specifications.

Selection Notes

Select this component when a 15 V regulation point with high accuracy is required. The ±2% tolerance distinguishes it from standard 5% or 10% variants. Consider the plastic DO-41 package for through-hole assembly where higher thermal resistance compared to glass-body options is acceptable. Verify power dissipation limits relative to ambient temperature derating curves.

Part Context

This part belongs to the JEDEC registered 1N4728A through 1N4764A series of 1-watt Zener diodes. The 'e3' suffix denotes RoHS compliance, while the 'C' suffix specifies the tighter voltage tolerance. The 'TR' suffix indicates availability in tape and reel packaging for automated assembly processes.

Replacement Considerations

Standard replacements include 1N4744A (5% tolerance) or 1N4744D (1% tolerance). Surface mount equivalents such as SMAJ4744A are available. Verify that substitute parts maintain the required 15 V nominal voltage and 1 W power dissipation rating.