1N4745PE3/TR8

Overview

The Microchip Technology 1N4745PE3/TR8 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 at a nominal Zener voltage of 16 V with a standard tolerance of ±5%. The device operates within a temperature range of -65°C to +150°C and features RoHS-compliant annealed matte-tin plating on its terminals.

Feature Summary

• Plastic encapsulated construction offering lower thermal resistance compared to glass-body options
• Moisture classification Level 1 per IPC/JEDEC J-STD-020B requiring no dry pack
• Flexible axial-lead mounting terminals for standard through-hole integration

Applications

• Voltage regulation over broad operating current and temperature ranges
• General purpose circuit protection and reference applications
• Power supply design utilizing axial-lead mounting

Procurement Notes

Verify that the specific part number includes the required suffixes for your application requirements. Confirm the presence of the 'P' suffix indicates plastic construction and the 'e3' suffix denotes RoHS compliance. Ensure the 'TR' suffix matches your preferred tape and reel packaging format before finalizing procurement orders.

Selection Notes

Select this component when a 16 V regulation point with 5% tolerance is required in a high-power 1 W dissipation class. Consider the plastic body for improved thermal performance relative to glass variants. Verify that the axial lead configuration fits the mechanical constraints of the target printed circuit board layout.

Part Context

This device belongs to the JEDEC registered 1N4728A through 1N4764A series manufactured by Microsemi Scottsdale Division. The series covers a wide voltage selection from 3.3 to 100 volts. The specific model utilizes a plastic molded epoxy body meeting UL94V-0 standards, distinguishing it from the glass-body G-suffix options available in the same family.

Replacement Considerations

Equivalent parts include other manufacturers' 1N4745A devices in DO-41 packages. For surface mount needs, SMAJ4745A or MLL4745A equivalents are available within the same voltage and power series.