1N4745CPE3/TR12

Overview

The Microchip Technology 1N4745CPE3/TR12 is a silicon 1.0-watt Zener diode in a plastic DO-41 axial lead package. It provides voltage regulation at a nominal 16V with a tight ±2% tolerance, 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, it offers flexible mounting terminals and void-free epoxy construction.

Feature Summary

• Provides precise voltage regulation with a standard ±2% tolerance for stable reference applications
• Features a void-free transfer molded thermosetting epoxy body meeting UL94V-0 flammability ratings
• Offers flexible axial-lead mounting terminals suitable for through-hole PCB integration
• Includes RoHS compliant annealed matte-Tin plating on terminals for soldering compatibility

Applications

• Voltage regulation circuits requiring stable DC references
• Protection against overvoltage transients in electronic systems
• Clamping applications for signal conditioning and waveform shaping

Procurement Notes

Verify that the ordering suffixes correctly identify the specific component attributes. The 'P' suffix confirms plastic encapsulation, while 'e3' denotes RoHS compliance. Ensure the 'TR' suffix matches the required tape and reel packaging configuration. Confirm the 'C' suffix aligns with the necessary ±2% voltage tolerance requirements for the design.

Selection Notes

Select this component when a 16V Zener voltage with high precision is required. The plastic DO-41 package offers lower thermal resistance compared to glass-body options. Verify that the 1.0-watt power dissipation rating meets the circuit's steady-state and surge current demands. Consider the operating temperature range and moisture classification level during system design.

Part Context

This part belongs to the 1N4728AP thru 1N4764AP series of 1.0-watt Zener diodes manufactured by Microsemi (now Microchip Technology). The series covers a voltage selection from 3.3 to 100 volts. The specific model utilizes JEDEC registered numbering conventions and is available in various screening levels and package options to meet diverse industrial and commercial application needs.

Replacement Considerations

Surface mount equivalents are available as SMAJ4745A or MLL4745A. Consult the manufacturer for other compatible surface mount options or alternative screening levels such as JAN, JANTX, JANTXV, and JANS if military specifications are required.