1N4752P/TR8

Overview

The Microchip Technology 1N4752P/TR8 is a silicon 1.0-watt Zener diode in the 1N4728AP through 1N4764AP series, manufactured by Microsemi. It provides voltage regulation at a nominal Zener voltage of 33V with a standard tolerance of plus or minus 5%. The device features a plastic encapsulated DO-41 (DO-204AL) axial-lead package and operates within a temperature range of -65°C to +150°C. Electrical characteristics include a maximum dynamic impedance of 45 Ohms at a test current of 7.5 mA and a maximum reverse current of 5 µA at a test voltage of 1 V.

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 33V reference
• Power supply protection against overvoltage conditions
• General-purpose electronic equipment utilizing axial-lead components

Procurement Notes

Verify that the ordering suffix TR8 corresponds to tape and reel packaging as specified in the datasheet. Confirm the manufacturer designation remains consistent with Microsemi or Microchip Technology documentation. Ensure the component meets the required JEDEC registration standards for the 1N4752A series before procurement.

Selection Notes

Select this component when a 33V Zener voltage with 5% tolerance is required in a plastic axial package. Consider the lower thermal resistance of the plastic construction compared to glass-body options. Verify that the 1.0-watt power dissipation rating and the specific dynamic impedance values align with the circuit design requirements.

Part Context

This part belongs to the widely used 1N4728A through 1N4764A series of 1-watt Zener diodes. The 'P' suffix indicates plastic construction, while the 'TR' suffix denotes tape and reel packaging. These devices are JEDEC registered and offer extensive voltage selection from 3.3 to 100 volts with various tolerance options available through different suffixes.

Replacement Considerations

Surface mount equivalents such as SMAJ4752A or MLL4752A are available. Glass-body versions like 1N4752G share the same electrical specifications but differ in package material. Military screening levels can be obtained by adding prefixes like MQ, MX, MV, or MSP to the base part number.