1N4745APE3/TR8

Overview

The Microchip Technology 1N4745APE3/TR8 is a silicon 1.0-watt Zener diode in the 1N4728AP through 1N4764AP series, manufactured by Microsemi's Scottsdale Division. It provides voltage regulation with a nominal Zener voltage of 16 V and a standard tolerance of ±5%. The device features a plastic DO-41 (DO-204AL) axial-lead package and operates within a temperature range of -65°C to +150°C. Electrical characteristics include a maximum dynamic impedance of 16 Ohms at a test current of 15.5 mA, a maximum reverse current of 57 µA, and a forward voltage of 1.2 V maximum 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 circuit integration
• Constructed with a void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B requiring no dry pack

Applications

• Voltage regulation in power supply circuits
• Reference voltage generation in electronic systems
• Overvoltage protection applications

Procurement Notes

Verify that the ordering suffix 'e3' confirms RoHS compliance and 'TR' indicates tape and reel packaging as specified in the datasheet. Confirm the manufacturer origin is Microsemi or its successor entity, Microchip Technology, to ensure alignment with the JEDEC registered part number specifications and mechanical data provided.

Selection Notes

Select this component when a 16 V regulated output is required with a 5% tolerance. Ensure the application supports the 1.0-watt power dissipation rating and the specific thermal resistance requirements for the plastic DO-41 package. Verify that the operating environment falls within the -65°C to +150°C temperature range defined for the device.

Part Context

This part belongs to the popular 1N4728AP through 1N4764AP series of 1.0-watt Zener diodes. The series offers an extensive voltage selection from 3.3 to 100 volts. The 'P' suffix designates the plastic construction option, which provides lower thermal resistance compared to the glass-body options available for these same JEDEC part numbers.

Replacement Considerations

Surface mount equivalents are available as SMAJ4745A and MLL4745A. Consult the factory for other surface mount options if leaded packages are unsuitable for the target assembly process.