1N4752AP/TR12

Overview

The Microchip Technology 1N4752AP/TR12 is a silicon 1.0-watt Zener diode in the 1N4728AP through 1N4764AP series, housed in a plastic DO-41 or DO-204AL axial-lead package. It provides voltage regulation with a nominal Zener voltage of 33V and a standard tolerance of ±5%. The device operates within an ambient temperature range of -65°C to +150°C and features a maximum dynamic impedance of 45 ohms at a test current of 7.5 mA. It includes a tape and reel option for automated assembly.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals suitable for standard PCB layouts
• Constructed with a 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 1-watt power dissipation
• Clipping and wave shaping applications
• Reference voltage sources in electronic systems

Procurement Notes

Verify that the part number suffix TR12 corresponds to the specified tape and reel packaging configuration as defined by EIA-296 standards. Confirm RoHS compliance status if required, noting that devices with the e3 suffix are compliant while others may contain lead. Ensure the supplier documentation matches the Microsemi Scottsdale Division specifications for the 1N4728AP through 1N4764AP series.

Selection Notes

Select this component when a 33V Zener voltage with 5% tolerance is required in a plastic axial-lead package. Consider the thermal resistance characteristics, which differ between lead-mounted and board-mounted configurations. Evaluate the need for military screening prefixes if higher reliability levels such as JAN or JANTX are necessary for the specific application environment.

Part Context

This component belongs to the JEDEC registered 1N4728A to 1N4764A series manufactured by Microsemi's Scottsdale Division. The series offers extensive voltage selection from 3.3 to 100 volts. The plastic construction (P suffix) provides lower thermal resistance compared to glass-body options. Surface mount equivalents are available in SMAJ and MLL packages for designs requiring different form factors.

Replacement Considerations

Surface mount equivalents include SMAJ4752A and MLL4752A. Glass-body versions are designated with a G suffix, such as 1N4752AG.