1N4752APE3/TR12

Overview

The Microchip Technology 1N4752APE3/TR12 is a silicon 1.0-watt Zener diode in the 1N4728AP to 1N4764AP series, housed in a plastic DO-41 (DO-204AL) axial-lead package. It provides voltage regulation at a nominal Zener voltage of 33 V with a standard tolerance of ±5%. The device operates within a temperature range of -65°C to +150°C and features RoHS compliance indicated by the e3 suffix. Electrical characteristics include a maximum dynamic impedance of 45 Ohms at a test current of 7.5 mA, a maximum reverse current of 5 µA at 25 V, and a maximum forward voltage of 1.2 V at 200 mA.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for through-hole applications
• 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 robust thermal performance
• Applications necessitating low parasitic requirements due to plastic encapsulation
• General-purpose electronic equipment utilizing standard JEDEC registered components

Procurement Notes

Verify that the specific part number includes the TR suffix to confirm tape and reel packaging as specified. Confirm the presence of the e3 suffix to ensure RoHS compliant annealed matte-Tin plating on the terminals. Cross-reference the A suffix to validate the required 5% voltage tolerance against design specifications. Ensure compatibility with the DO-41 footprint during PCB layout verification.

Selection Notes

Select this component when a 33 V reference is required with a 5% tolerance and 1.0 W power dissipation capability. The plastic construction offers lower thermal resistance compared to glass-body options, making it suitable for high-density mounting. Verify that the operating environment remains within the -65°C to +150°C range and that surge current limits are respected during transient conditions.

Part Context

This device belongs to the widely used 1N4728A through 1N4764A series of silicon Zener diodes. The series covers a voltage selection from 3.3 V to 100 V. The 'P' suffix denotes plastic encapsulation, while the 'e3' suffix indicates lead-free, RoHS-compliant manufacturing. These components are JEDEC registered and serve as standard replacements for legacy glass-body variants in modern designs.

Replacement Considerations

Surface mount equivalents are available as SMAJ4752A or MLL4752A. Glass-body versions exist under the same JEDEC numbering but utilize different packaging materials.