1N4754P/TR12

Overview

The Microchip Technology 1N4754P/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 39 V and a standard tolerance of ±10%. The device operates within a temperature range of -65°C to +150°C and features a maximum power dissipation of 1.0 watts at 25°C. Electrical characteristics include a test current of 6.5 mA, a maximum dynamic impedance of 60 Ohms, and a maximum reverse current of 5 µA.

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 applications.
• Non-sensitive to electrostatic discharge (ESD) per MIL-STD-750 Method 1020.

Applications

• Voltage regulation over broad operating current and temperature ranges
• Reference voltage sources in electronic circuits
• Surge protection and clamping applications

Procurement Notes

Verify that the ordering suffix 'TR' corresponds to the tape and reel packaging option as defined by EIA-296 standards. Confirm the specific manufacturer documentation for the exact electrical parameters associated with the 'P' suffix indicating plastic construction. Ensure compatibility with RoHS compliance requirements if applicable, noting that RoHS versions utilize an 'e3' suffix.

Selection Notes

Select this component for applications requiring a 39 V regulation point with ±10% tolerance. Consider the plastic DO-41 package for its lower thermal resistance relative to glass equivalents. Evaluate the 1.0 W power dissipation capability against circuit load requirements. Verify that the operating temperature range of -65°C to +150°C meets environmental constraints.

Part Context

This part belongs to the JEDEC registered 1N4728A to 1N4764A series of 1.0 watt Zener diodes manufactured by Microsemi (now Microchip Technology). The series offers extensive voltage selection from 3.3 to 100 volts. The 'P' suffix designates the plastic molded epoxy body variant, which provides improved thermal performance compared to the glass-body 'G' suffix options available for the same JEDEC numbers.

Replacement Considerations

Surface mount equivalents are available as SMAJ4754A or MLL4754A. Consult the factory for other surface mount options or tighter tolerance variants identified by different suffix letters.