1N4750CPE3/TR8

Overview

The Microchip Technology 1N4750CPE3/TR8 is a silicon 1.0-watt Zener diode in the 1N4728AP through 1N4764AP series, manufactured by Microsemi's Scottsdale Division. It provides voltage regulation with a nominal Zener voltage of 27V and a tight tolerance of plus or minus 2%, indicated by the 'C' suffix. The device operates within a temperature range of -65°C to +150°C and features a plastic DO-41 (DO-204AL) package. Electrical characteristics include a test current of 9.5 mA, a maximum dynamic impedance of 35 ohms at the test current, and a maximum reverse current of 5 µA at a test voltage of 20.6 V.

Feature Summary

• Provides precise voltage regulation with a standard 2% tolerance on nominal Zener voltage.
• Features a void-free transfer molded thermosetting epoxy body meeting UL94V-0 flammability ratings.
• Offers flexible axial-lead mounting terminals solderable per MIL-STD-750 method 2026.
• Includes RoHS compliant devices available with an e3 suffix for annealed matte-Tin plating.

Applications

• Voltage regulation over broad operating current and temperature ranges
• General purpose circuit protection requiring stable reference voltages
• Power supply designs utilizing standard axial-lead mounting

Procurement Notes

Verify that the ordering suffix matches the required specifications. The 'e3' suffix indicates RoHS compliance with tin plating, while the 'TR' suffix denotes tape and reel packaging. Confirm the 'C' suffix corresponds to the necessary 2% voltage tolerance. Ensure the component meets moisture classification Level 1 requirements without dry pack constraints. Cross-reference the manufacturer part number against official Microsemi documentation to confirm authenticity and exact electrical parameters.

Selection Notes

Select this component when a 27V Zener diode with high precision is required. The 2% tolerance makes it suitable for applications demanding tighter voltage stability than standard 5% or 10% variants. The plastic construction offers lower thermal resistance compared to glass-body options. Consider the 1.0-watt power dissipation rating and the specific test current of 9.5 mA for circuit design compatibility.

Part Context

This device belongs to the popular 1N4728AP through 1N4764AP series of 1.0-watt Zener diodes produced by Microsemi. The series covers a voltage selection from 3.3 to 100 volts. The 'P' suffix designates plastic construction, which provides lower thermal resistance compared to the glass-body 'G' suffix option. These components are JEDEC registered and available in various screening levels.

Replacement Considerations

Compatible substitutes within the same series include 1N4750APE3/TR8 (5% tolerance) or 1N4750DPE3/TR8 (1% tolerance). Surface mount equivalents such as SMAJ4750A or MLL4750A are available but require layout changes. Verify that any replacement maintains the 2% tolerance requirement if precision is critical.