1N4744E3/TR13

Overview

The Microchip Technology 1N4744E3/TR13 is a silicon 1-watt Zener diode in the 1N4728AP through 1N4764AP series. It provides voltage regulation at a nominal 15 V with a standard 5% tolerance. The device operates within a temperature range of -65°C to +150°C and features a plastic DO-41 (DO-204AL) package. Electrical characteristics include a maximum dynamic impedance of 14 Ohms at a test current of 17 mA, a maximum reverse current of 5 µA at 1 V, and a maximum forward voltage of 1.2 V at 200 mA.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for standard PCB integration
• Constructed with a void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards
• RoHS compliant devices available with an e3 suffix indicating annealed matte-Tin plating

Applications

• General purpose voltage regulation circuits
• Power supply reference voltage generation
• Overvoltage protection in electronic systems

Procurement Notes

Verify that the ordering suffix TR13 corresponds to the tape and reel packaging option specified in the datasheet as adding a TR suffix. Confirm the RoHS compliance status associated with the e3 suffix matches project requirements. Ensure the component meets the specific JEDEC registration standards for the 1N4744A type number before finalizing procurement orders.

Selection Notes

Select this component when a 15 V regulation point is required with a 5% tolerance. The 1 W power dissipation rating supports applications requiring higher thermal stability than lower wattage variants. The plastic encapsulation offers lower thermal resistance compared to glass-body options. Verify that the axial lead configuration fits the mechanical constraints of the target printed circuit board design.

Part Context

This part belongs to the popular 1N4728AP through 1N4764AP series of 1.0 watt Zener diodes manufactured by Microsemi Scottsdale Division. The series covers a wide voltage selection from 3.3 to 100 volts. The 1N4744 variant specifically targets the 15 V regulation segment within this extensive lineup of plastic encapsulated devices.

Replacement Considerations

Surface mount equivalents such as SMAJ4744A or MLL4744A are available from the same manufacturer family. Consult the factory for other surface mount options if space constraints require a different form factor while maintaining similar electrical performance characteristics.