1N4752APE3/TR8

Overview

The Microchip Technology 1N4752APE3/TR8 is a silicon 1.0-watt Zener diode in the 1N4728AP through 1N4764AP series, providing voltage regulation with a nominal Zener voltage of 33 V and a standard tolerance of ±5%. It operates within an ambient temperature range of -65°C to +150°C and features a DO-41 (DO-204AL) plastic axial-lead package. The device has a maximum reverse current of 5 µA at a test voltage of 25.1 V and a dynamic impedance of 45 Ω at a test current of 7.5 mA. It includes RoHS compliance indicated by the e3 suffix and tape-and-reel packaging denoted by TR8.

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

Procurement Notes

Verify that the ordering suffix matches the required specifications: 'P' indicates plastic encapsulation, 'e3' confirms RoHS compliance, and 'TR8' specifies tape-and-reel packaging. Confirm the manufacturer designation as Microchip Technology or its predecessor entity Microsemi Scottsdale Division. Ensure the component meets JEDEC registration standards for the 1N4752A type number before procurement.

Selection Notes

Select this component when a 33 V Zener voltage with ±5% tolerance is required for power dissipation up to 1.0 watt. Choose the plastic DO-41 package over glass options for lower thermal resistance and moisture classification Level 1 without dry pack requirements. Consider the tape-and-reel format for automated assembly processes requiring specific reel configurations.

Part Context

This part belongs to the 1N4728AP through 1N4764AP series of silicon 1-watt Zener diodes manufactured by Microsemi's Scottsdale Division, now part of Microchip Technology. The series offers extensive voltage selection from 3.3 to 100 volts. The 'A' suffix denotes a 5% voltage tolerance, while the 'P' suffix identifies the plastic DO-41 package construction.

Replacement Considerations

Equivalent parts include other manufacturers' 1N4752A variants in DO-41 packages. For surface mount needs, MLL4752A is available. Glass-body equivalents like 1N4752AG offer hermetic sealing but differ in thermal characteristics.