1N4745AE3/TR13

Overview

The Microchip Technology 1N4745AE3/TR13 is a silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 16 V with a tolerance of ±5%. The device operates in the DO-204AL (DO-41) axial through-hole package and dissipates up to 1 W of power. Key electrical parameters include a maximum reverse leakage current of 100 nA, a Zener impedance of 16 Ohms at a test current of 15.5 mA, and a forward voltage of 1.2 V at 200 mA. It supports an operating temperature range from -65°C to +175°C.

Feature Summary

• Provides stable voltage regulation within specified tolerances using silicon junction technology.
• Capable of handling high thermal loads with extended operational temperature limits.
• Constructed in a robust axial leaded package suitable for standard through-hole mounting.

Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in power supply systems
• Clamping applications for transient signal suppression

Procurement Notes

Verify the specific suffix configuration against official Microchip documentation to ensure compatibility with required packaging formats. Confirm RoHS compliance status and environmental declarations prior to integration. Cross-reference datasheet revisions to validate parameter consistency. Ensure procurement channels provide authentic components with traceable manufacturing records.

Selection Notes

Select this component when a 16 V regulation point is required with moderate precision. Evaluate thermal management requirements given the 1 W dissipation capability. Consider the axial package constraints for PCB layout. Compare leakage and impedance characteristics against circuit sensitivity requirements to ensure adequate performance margins.

Part Context

This part belongs to the widely recognized 1N4745 series of 1-watt Zener diodes manufactured by Microchip Technology. The 'e3' designation indicates lead-free construction compliant with environmental standards. The 'TR13' suffix typically denotes reel packaging for automated assembly processes, distinguishing it from bulk or tape-and-reel variants with different quantities.

Replacement Considerations

Direct substitutes include other 1N4745 series variants such as 1N4745AE3 or 1N4745G, provided package and tolerance specifications match. Verify that alternative sources maintain identical Zener voltage and impedance profiles. Ensure replacement parts meet the same thermal and electrical ratings for seamless integration.