1N4751CPE3/TR12

Overview

The Microchip Technology 1N4751CPE3/TR12 is a silicon 1.0-watt Zener diode in the 1N4728AP through 1N4764AP series, housed in a plastic DO-41 (DO-204AL) axial-lead package. It provides voltage regulation with a nominal Zener voltage of 30 V and a tight tolerance of ±2%, indicated by the 'C' suffix. The device operates within a temperature range of -65°C to +150°C and features RoHS compliance via the 'e3' suffix. Packaged in tape and reel format per EIA-296 standards as denoted by the 'TR12' suffix, it offers flexible mounting terminals and void-free transfer molded epoxy construction.

Feature Summary

• Provides precise voltage regulation with a ±2% tolerance on the nominal Zener voltage.
• Features a plastic encapsulated body offering lower thermal resistance compared to glass-body options.
• Includes flexible axial-lead terminals for standard through-hole mounting applications.
• Constructed with void-free transfer molded thermosetting epoxy meeting UL94V-0 standards.

Applications

• Voltage regulation circuits requiring stable reference voltages.
• Protection against overvoltage conditions in electronic systems.
• Clamping applications for transient voltage suppression.

Procurement Notes

Verify that the ordering suffixes correctly identify the specific attributes required for your design. The 'C' suffix confirms the 2% voltage tolerance, while 'P' indicates the plastic DO-41 package. Ensure the 'e3' suffix matches environmental compliance requirements and 'TR12' aligns with automated assembly packaging needs. Confirm manufacturer details as the product line originated from Microsemi before acquisition.

Selection Notes

Select this component when a 30 V Zener voltage with high precision is necessary. The ±2% tolerance makes it suitable for applications where tighter voltage control is critical compared to standard 5% or 10% variants. Consider the plastic package for its lower thermal resistance if operating near maximum power dissipation limits. Verify that the axial lead form factor fits the available board space and mounting constraints.

Part Context

This part belongs to the widely used 1N47xxA series of 1-watt Zener diodes, covering a voltage range from 3.3 V to 100 V. The series is JEDEC registered and offers various tolerance options identified by suffix letters. The plastic variant provides an alternative to traditional glass-body diodes, often preferred for specific thermal and mechanical properties in industrial and commercial electronics.

Replacement Considerations

Compatible substitutes include other manufacturers' 1N4751C equivalents in the DO-41 package. For identical specifications from the same lineage, consider the 1N4751CP or 1N4751CE3. Surface mount alternatives such as SMAJ4751A may be used if layout changes are permissible.