1N4755APE3/TR12

Overview

The Microchip Technology 1N4755APE3/TR12 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 43 V and a standard tolerance of ±5%. The device operates within a temperature range of -65°C to +150°C and features RoHS compliance indicated by the e3 suffix. Electrical characteristics include a maximum reverse current of 5 µA at 22 V and a dynamic impedance of 70 Ω at a test current of 6.0 mA.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for through-hole applications
• Constructed with void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards
• Non-sensitive to electrostatic discharge per MIL-STD-750 Method 1020

Applications

• Voltage regulation circuits requiring 43 V reference
• Power supply protection and clamping applications
• General-purpose electronic equipment utilizing axial-lead components

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm packaging configuration. The TR12 designation indicates tape and reel packaging; ensure compatibility with automated assembly equipment. Confirm RoHS compliance status and moisture sensitivity level requirements prior to procurement to align with storage and handling protocols.

Selection Notes

Select this component when a 43 V Zener voltage with ±5% tolerance is required in a 1 W power dissipation package. The plastic DO-41 construction offers lower thermal resistance compared to glass-body options. Ensure the application environment stays within the specified -65°C to +150°C operating temperature range and verify that the maximum regulator current of 110 mA meets circuit demands.

Part Context

This part belongs to the JEDEC registered 1N4728A to 1N4764A series of silicon Zener diodes manufactured by Microsemi (now Microchip Technology). The series covers a voltage selection from 3.3 to 100 volts. The 'P' suffix denotes plastic encapsulation, while the 'e3' suffix confirms RoHS compliance with annealed matte-tin plating on the terminals.

Replacement Considerations

Compatible substitutes within the same series include 1N4755A, 1N4755AP, and 1N4755Pe3. Verify that alternative packages or suffixes match the required thermal resistance and regulatory compliance specifications.