1N4756CPE3/TR8

Overview

The Microchip Technology 1N4756CPE3/TR8 is a silicon 1.0-watt Zener diode in the 1N4728AP through 1N4764AP series, manufactured by Microsemi's Scottsdale Division. It provides voltage regulation with a nominal Zener voltage of 47V and a tight tolerance of ±2%, indicated by the 'C' suffix. The device utilizes a plastic DO-41 (DO-204AL) package with flexible axial leads and features RoHS compliance via the 'e3' suffix. Electrical characteristics include a maximum dynamic impedance of 80 ohms at a test current of 5.5 mA, a maximum reverse current of 5 µA, and a maximum regulator current of 95 mA. It operates within a temperature range of -65°C to +150°C.

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 that meets UL94V-0 standards.
• Offers lower thermal resistance compared to glass-body options for the same JEDEC part numbers.
• Includes flexible axial-lead mounting terminals suitable for standard through-hole applications.

Applications

• Voltage regulation circuits requiring stable reference voltages.
• Protection against overvoltage conditions in electronic systems.
• Clipping and clamping applications in signal processing.

Procurement Notes

Verify the specific ordering suffixes to confirm the exact electrical tolerances and packaging format required for your design. The 'C' suffix denotes a 2% voltage tolerance, while the 'P' indicates plastic construction. Ensure the 'TR8' designation matches your automated assembly needs, as it typically refers to tape and reel packaging. Confirm RoHS compliance status if environmental regulations apply to your manufacturing process.

Selection Notes

Select this component when a 47V Zener voltage with high precision is necessary. The plastic DO-41 package offers robust mechanical protection and easier handling compared to glass equivalents. Consider the thermal derating requirements if operating near the maximum power dissipation limit. Verify that the 80-ohm dynamic impedance meets the ripple rejection requirements of your specific circuit design.

Part Context

This device belongs to the widely used 1N4728A through 1N4764A series of 1-watt Zener diodes. Originally developed by Microsemi's Scottsdale Division, these parts are JEDEC registered and offer an extensive voltage selection from 3.3 to 100 volts. The series includes various tolerance options and screening levels, making it a versatile choice for general-purpose voltage regulation tasks across industrial and commercial electronics.

Replacement Considerations

Equivalent parts include other manufacturers' 1N4756A variants with matching 47V ratings and 1W power dissipation. For tighter tolerance requirements, verify compatibility with 1N4756C or 1N4756D types. Surface mount replacements such as SMAJ4756A may be considered if board space is limited, though pinout and thermal characteristics must be evaluated.