1N4755AP/TR12

Overview

The Microchip Technology 1N4755AP/TR12 is a silicon 1.0-watt Zener diode in the 1N4728AP through 1N4764AP series, housed in a plastic DO-41 or DO-204AL package. It provides voltage regulation with a nominal Zener voltage of 43 volts and a standard tolerance of plus or minus 5%. The device operates within an ambient temperature range of -65°C to +150°C and features a maximum dynamic impedance of 70 ohms at a test current of 6.0 mA. It is supplied in tape and reel packaging.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for standard PCB integration
• Constructed with a void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards
• Moisture classified as Level 1 per IPC/JEDEC J-STD-020B requiring no dry pack

Applications

• Voltage regulation circuits
• Reference voltage sources
• Overvoltage protection

Procurement Notes

Verify that the part number suffix TR12 corresponds to the specified tape and reel packaging configuration. Confirm the manufacturer origin, as historical production was under Microsemi before acquisition by Microchip Technology. Ensure compliance requirements match the specific RoHS status indicated by the suffix if applicable.

Selection Notes

Select this component when a 43-volt regulation point is required with a 5% tolerance. The plastic DO-41 package offers lower thermal resistance compared to glass-body options. Consider the 1.0-watt power dissipation limit and derating curves for high-temperature environments. Verify lead length requirements against the specified thermal resistance values.

Part Context

This component belongs to the JEDEC registered 1N4728A to 1N4764A series of 1.0-watt Zener diodes. The 'P' suffix designates the plastic encapsulated construction, while the 'TR' suffix indicates tape and reel packaging. This series covers a wide voltage selection from 3.3 to 100 volts.

Replacement Considerations

Equivalent parts include 1N4755A (glass body) or 1N4755G. Surface mount equivalents are available as SMAJ4755A or MLL4755A.