1N4752PE3/TR8

Overview

The Microchip Technology 1N4752PE3/TR8 is a silicon 1.0-watt Zener diode in the 1N4728AP-1N4764AP series, housed in a plastic DO-41 (DO-204AL) axial-lead package. 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 RoHS-compliant annealed matte-tin plating. 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 that the ordering suffix TR8 corresponds to the tape and reel packaging configuration as specified by EIA-296 standards. Confirm the presence of the e3 suffix indicates RoHS compliance with annealed matte-tin terminals. Ensure the component matches the specific 5% tolerance designation associated with the A suffix in the base part number. Cross-reference the manufacturer's latest documentation for any updates regarding screening levels or environmental declarations.

Selection Notes

Select this component when a 33 V Zener voltage with 5% tolerance is required in a plastic axial package. The DO-41 form factor offers lower thermal resistance compared to glass-body options. Consider the 1.0 W power dissipation capability and the -65°C to +150°C operating range for suitability in various industrial environments. Verify that the 45 Ohm dynamic impedance meets the circuit's stability requirements.

Part Context

This device belongs to the 1N4728AP through 1N4764AP series of silicon Zener diodes manufactured by Microsemi, now part of Microchip Technology. The series covers a voltage selection from 3.3 to 100 volts. The plastic encapsulation provides moisture classification Level 1, eliminating the need for dry packing. These components are JEDEC registered and available in various military screening levels with specific prefix identifiers.

Replacement Considerations

Equivalent parts within the same series include 1N4752A, 1N4752AP, and 1N4752G. Surface mount equivalents such as SMAJ4752A or MLL4752A are available but require different mounting considerations. Verify that substitute components match the 33 V nominal voltage and ±5% tolerance specifications.