1N4756P/TR12

Overview

The Microchip Technology 1N4756P/TR12 is a silicon 1.0-watt Zener diode in the 1N4728AP through 1N4764AP series, housed in a plastic DO-41 axial lead package. It provides voltage regulation with a nominal Zener voltage of 47 V and a standard tolerance of ±5%. The device operates within a temperature range of -65°C to +150°C and features a maximum dynamic impedance of 80 Ohms at a test current of 5.5 mA. It includes a tape and reel packaging option for automated assembly.

Feature Summary

• Plastic encapsulated construction offering lower thermal resistance compared to glass-body options
• Moisture classification Level 1 requiring no dry pack storage
• ESD nonsensitive per MIL-STD-750 Method 1020
• Flexible axial-lead mounting terminals

Applications

• Voltage regulation over broad operating current and temperature ranges
• General purpose circuit protection
• Reference voltage generation

Procurement Notes

Verify the specific suffix configuration against official datasheets to confirm material composition and screening levels. Ensure the ordering quantity aligns with the manufacturer's specified reel multiples. Confirm RoHS compliance status if required by the end application standards.

Selection Notes

Select this component when a 47 V regulation point is required with a 5% tolerance. Consider the plastic package for improved thermal performance relative to glass variants. Verify that the 1.0 W power dissipation rating meets the thermal requirements of the target circuit environment.

Part Context

This part belongs to the JEDEC registered 1N4728A to 1N4764A series manufactured by Microsemi (now Microchip Technology). The 'P' suffix indicates plastic construction, while 'TR' denotes tape and reel packaging. The series covers voltages from 3.3 V to 100 V.

Replacement Considerations

Equivalent parts include other manufacturers' 1N4756A or 1N4756AP devices. Verify pinout compatibility and ensure the replacement meets the same 1.0 W power dissipation and 47 V Zener voltage specifications.