1N4750CPE3/TR12

Overview

The Microchip Technology 1N4750CPE3/TR12 is a silicon 1-watt Zener diode in the 1N4728AP through 1N4764AP series. It provides voltage regulation with a nominal Zener voltage of 27V and a tight tolerance of ±2%, indicated by the 'C' suffix. The device features a plastic DO-41 (DO-204AL) axial lead package, RoHS compliance via the 'e3' suffix, and tape-and-reel packaging per EIA-296 standard. Maximum ratings include 1.0W power dissipation at 25°C, an operating temperature range from -65°C to +150°C, and a maximum forward voltage of 1.2V at 200mA.

Feature Summary

• Provides precise voltage regulation with a tight ±2% tolerance on the nominal Zener voltage.
• Features a void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards.
• Offers flexible axial-lead mounting terminals suitable for standard PCB assembly.
• Includes RoHS compliant annealed matte-Tin plating solderable per MIL-STD-750 method 2026.

Applications

• Voltage regulation circuits requiring stable reference voltages.
• Power supply protection against overvoltage conditions.
• Clamping applications for transient voltage suppression.

Procurement Notes

Verify that the ordering suffix matches the required specifications: 'C' for 2% tolerance, 'P' for plastic construction, 'e3' for RoHS compliance, and 'TR' for tape-and-reel packaging. Confirm the manufacturer source is Microchip or authorized distributor. Ensure the component meets the specified JEDEC registration and moisture classification Level 1 requirements without dry pack necessity.

Selection Notes

Select this component when a 27V Zener voltage with high precision is required. The plastic package offers lower thermal resistance compared to glass-body options. Consider the 1W power rating and derating curves for thermal management. Verify compatibility with surface mount equivalents if space constraints exist later in the design phase.

Part Context

This part belongs to the popular 1N4728A through 1N4764A series of 1.0 watt Zener diodes. The series covers a voltage selection from 3.3 to 100 volts. The specific model utilizes a plastic encapsulation which provides lower thermal resistance than the glass-body (G suffix) option for the same JEDEC part numbers. It is available in various military screening levels with different prefixes.

Replacement Considerations

Equivalent parts include 1N4750A, 1N4750AP, and 1N4750G. For tighter tolerances, consider 1N4750D. Surface mount replacements are SMAJ4750A or MLL4750A. Verify voltage, power, and package compatibility before substitution.