1N4750AP/TR12

Overview

The Microchip Technology 1N4750AP/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 with tape and reel packaging. It provides voltage regulation at a nominal Zener voltage of 27V with a standard tolerance of ±5%. 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 lead temperature. Electrical characteristics include a test current of 9.5 mA, a maximum dynamic impedance of 35 ohms at the test current, and a maximum reverse current of 5 µA at a test voltage of 20.6 V.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for standard through-hole applications
• 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 electronic circuits
• Reference voltage sources
• Overvoltage protection

Procurement Notes

Verify that the part number suffix TR12 corresponds to the specific tape and reel packaging configuration required for automated assembly processes. Confirm that the component meets the necessary environmental and quality standards for the intended application, as specifications may vary based on manufacturing revisions or specific screening levels not detailed in the general datasheet.

Selection Notes

Select this component when a 27V Zener voltage with 5% tolerance is required for power dissipation up to 1.0 watt. Consider the plastic DO-41 package for its lower thermal resistance compared to glass-body options. Ensure the operating environment stays within the specified -65°C to +150°C temperature range and that the circuit design accounts for the derating curves provided in the documentation.

Part Context

This component belongs to the widely used 1N47xx series of 1-watt Zener diodes, offering an extensive voltage selection from 3.3 to 100 volts. The 'P' suffix indicates plastic encapsulation, which offers advantages over glass bodies, while the 'TR12' suffix denotes tape and reel packaging suitable for high-volume surface mount or through-hole automated insertion equipment.

Replacement Considerations

Equivalent parts include other manufacturers' 1N4750A variants in DO-41 packages. For tighter tolerances, consider 1N4750C (2%) or 1N4750D (1%). Surface mount equivalents are available as SMAJ4750A or MLL4750A.