1N4758CPE3/TR8

Overview

The Microchip Technology 1N4758CPE3/TR8 is a silicon planar power Zener diode designed for voltage regulation and clipping applications. It features a nominal Zener voltage of 56 V with a tight tolerance of ±2%, tested at a current of 4.5 mA. The device operates in the DO-41 axial lead package, providing a maximum power dissipation of 1 W. Electrical characteristics include a maximum dynamic impedance of 110 Ohms and a maximum reverse leakage current of 5 µA at 42.6 V. It supports an operating temperature range from -65°C to +150°C.

Feature Summary

• Provides precise voltage regulation with a tight ±2% tolerance on the nominal Zener voltage.
• 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.
• Offers robust thermal performance with low junction-to-lead thermal resistance.

Applications

• Voltage stabilization in electronic circuits
• Signal clipping and waveform shaping
• Reference voltage generation for measurement systems

Procurement Notes

Verify that the ordering suffix matches the required specifications. The 'e3' suffix indicates RoHS compliance, while 'TR' denotes tape and reel packaging. Confirm the manufacturer origin, as this part originates from the Microsemi Scottsdale Division now under Microchip Technology. Ensure the component meets the specific moisture classification level required for your assembly process.

Selection Notes

Select this component when a stable 56 V reference with high precision is required. The ±2% tolerance makes it suitable for applications demanding tighter voltage control than standard 5% variants. Consider the plastic DO-41 package for lower thermal resistance compared to glass-body options. Verify that the 1 W power rating aligns with the expected thermal dissipation in the target circuit environment.

Part Context

This device belongs to the 1N4728AP through 1N4764AP series of 1.0 Watt Zener diodes. The series provides extensive voltage selection ranging from 3.3 to 100 volts. The C suffix specifically identifies the tighter 2% tolerance variant within this family, distinguishing it from the standard A suffix (5%) or no-suffix (10%) versions.

Replacement Considerations

Compatible substitutes include other 56 V Zener diodes with ±2% tolerance in the DO-41 package. Equivalent parts may carry suffixes such as 'C' or 'K' depending on the manufacturer's tolerance coding. Ensure any replacement maintains the 1 W power dissipation rating and compatible operating temperature range.

FAQ

What does the 'C' suffix indicate in the part number?

The 'C' suffix designates a Zener voltage tolerance of plus or minus 2%, which is tighter than the standard 5% tolerance indicated by the 'A' suffix.

Is this component RoHS compliant?

Yes, the 'e3' suffix confirms that the device is RoHS compliant and utilizes annealed matte-Tin plating on its terminals.

What is the maximum operating temperature?

The device supports an operating and storage temperature range from -65°C to +150°C.