1N4755CPE3/TR8

Overview

The Microchip Technology 1N4755CPE3/TR8 is a silicon 1.0-watt Zener diode housed in a DO-41 plastic axial-lead package. It provides voltage regulation with a nominal Zener voltage of 43V 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-compliant annealed matte-tin plating, denoted by the 'e3' suffix. It is supplied in tape-and-reel packaging for automated assembly.

Feature Summary

• Provides precise voltage regulation with a ±2% tolerance on the 43V nominal breakdown voltage.
• Features a void-free transfer molded thermosetting epoxy body meeting UL94V-0 flammability standards.
• Offers flexible axial-lead mounting terminals suitable for through-hole applications.
• Includes RoHS-compliant solderable plating and requires no dry pack due to Level 1 moisture classification.

Applications

• Voltage reference circuits requiring stable bias points
• Overvoltage protection in power supply inputs
• Clamping applications in signal conditioning paths

Procurement Notes

Verify that the ordering suffix matches the required specifications: 'P' indicates plastic construction, 'e3' confirms RoHS compliance, and 'TR8' specifies the tape-and-reel packaging format. Confirm the 'C' suffix is present to ensure the ±2% voltage tolerance is met rather than the standard 5%. Ensure the procurement quantity aligns with the reel multiplier requirements specified by the manufacturer.

Selection Notes

Select this component when a 43V regulation point with high precision (±2%) is required in a 1W power dissipation class. The plastic DO-41 package offers lower thermal resistance compared to glass-body options. Consider the operating temperature range up to +150°C for high-temperature environments. Verify that the maximum reverse current and dynamic impedance parameters meet the specific circuit leakage and stability requirements.

Part Context

This part belongs to the 1N4728AP through 1N4764AP series of silicon Zener diodes manufactured by Microsemi (now Microchip Technology). The series covers a voltage selection from 3.3V to 100V. The 1N4755 variant specifically targets the 43V regulation segment. The 'A' suffix typically denotes 5% tolerance, while the 'C' suffix upgrades this to 2% accuracy for tighter circuit control.

Replacement Considerations

Cross-reference with other manufacturers offering 1N4755C equivalents in DO-41 packages. Ensure any substitute maintains the 43V nominal voltage, ±2% tolerance, and 1W power rating. Verify compatibility with the RoHS 'e3' plating specification if environmental compliance is mandatory.