1N4755CP/TR8

Overview

The Microchip Technology 1N4755CP/TR8 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 39V 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 a maximum dynamic impedance of 60 ohms at a test current of 6.5mA. It includes RoHS compliance via the 'e3' suffix and tape-and-reel packaging per EIA-296.

Feature Summary

• Provides precise voltage regulation with a standard 2% tolerance for stable reference applications
• Features flexible axial-lead mounting terminals suitable for through-hole PCB integration
• Constructed with a void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards
• Non-sensitive to electrostatic discharge (ESD) per MIL-STD-750 Method 1020

Applications

• Voltage regulation over broad operating current and temperature ranges
• Reference voltage sources requiring tight tolerance stability
• Protection circuits utilizing surge current handling capabilities

Procurement Notes

Verify that the ordering suffix matches the required specifications: 'P' indicates plastic construction, 'C' denotes 2% voltage tolerance, 'e3' confirms RoHS compliance, and 'TR' specifies tape-and-reel packaging. Confirm manufacturer lineage from Microsemi to Microchip Technology for accurate documentation sourcing. Ensure compatibility with existing thermal management designs given the 45°C/W junction-to-lead thermal resistance.

Selection Notes

Select this component when a 39V Zener voltage with 2% accuracy is required in an axial-lead package. The plastic construction offers lower thermal resistance compared to glass-body options. Consider the 1W power dissipation limit and derating curves for high-temperature environments. Verify that the 60-ohm dynamic impedance meets the circuit's noise and regulation requirements.

Part Context

This part belongs to the JEDEC registered 1N4728A to 1N4764A series of 1.0-watt Zener diodes. The series covers voltages from 3.3V to 100V. The 'CP' designation specifically identifies the plastic encapsulated version with 2% tolerance. Surface mount equivalents are available as SMAJ4755A or MLL4755A.

Replacement Considerations

Surface mount replacements include SMAJ4755A and MLL4755A. Glass-body equivalents exist but differ in thermal characteristics. Military screening prefixes (MQ, MX, MV, MSP) are available for enhanced reliability requirements.