1N4752PE3/TR12

Overview

The Microchip Technology 1N4752PE3/TR12 is a silicon 1-watt Zener diode in the 1N4728AP through 1N4764AP series. It provides voltage regulation with a nominal Zener voltage of 33 V and a standard tolerance of ±5%. The device operates within a temperature range of -65°C to +150°C and features a plastic DO-41 (DO-204AL) axial-lead package. 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 25.1 V, and a forward voltage of 1.2 V maximum 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 void-free transfer molded thermosetting epoxy meeting UL94V-0 standards
• Non-sensitive to electrostatic discharge per MIL-STD-750 Method 1020

Applications

• Voltage regulation circuits requiring 33 V reference
• Power supply protection and clamping applications
• General-purpose electronic equipment utilizing axial-lead components

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm packaging configuration. The TR12 suffix indicates tape and reel packaging; ensure compatibility with automated assembly equipment. Confirm RoHS compliance status via official datasheets as manufacturing processes may evolve. Cross-reference part numbers with current Microchip Technology listings to validate availability and revision levels before finalizing procurement plans.

Selection Notes

Select this component for designs requiring a 33 V Zener voltage with ±5% tolerance. The plastic DO-41 package offers lower thermal resistance compared to glass-body options. Ensure the application current remains within the specified test current parameters to maintain accuracy. Consider the maximum power dissipation rating and derating curves when designing for elevated ambient temperatures or high-power scenarios.

Part Context

This component belongs to the JEDEC registered 1N4728A to 1N4764A series manufactured by Microchip Technology's Scottsdale Division. The series covers a voltage selection from 3.3 to 100 volts. The 'e3' suffix denotes RoHS compliant devices with annealed matte-Tin plating. The 'P' suffix identifies the plastic encapsulated construction, distinguishing it from glass-body variants.

Replacement Considerations

Surface mount equivalents are available as SMAJ4752A or MLL4752A. Verify pinout compatibility and thermal management requirements when transitioning from axial-lead to surface-mount packages. Consult factory documentation for other specific form-factor alternatives.