1N4756CE3/TR13

Overview

The Microchip Technology 1N4756CE3/TR13 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 47V 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 compliance via the 'e3' suffix. Packaged in tape and reel format per EIA-296 standards as denoted by the 'TR13' suffix, it offers flexible mounting terminals and void-free transfer molded epoxy construction.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for standard through-hole applications
• Constructed with a void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards
• Includes moisture classification Level 1 per IPC/JEDEC J-STD-020B requiring no dry pack

Applications

• Voltage regulation circuits requiring precise 47V reference levels
• Power supply protection and clamping applications
• General-purpose electronic equipment utilizing axial-lead components

Procurement Notes

Verify that the specific part number matches the required electrical characteristics, particularly the 47V Zener voltage and ±2% tolerance associated with the 'C' suffix. Confirm the presence of the 'e3' suffix for RoHS compliance and the 'TR13' designation for tape and reel packaging. Ensure compatibility with the specified DO-41 package dimensions and thermal resistance parameters before integration into the design.

Selection Notes

Select this component when a 1-watt power dissipation rating and a 47V regulated output are required. The ±2% tolerance makes it suitable for applications demanding tighter voltage accuracy than standard 5% or 10% variants. Consider the plastic DO-41 package for its lower thermal resistance compared to glass-body options and its suitability for automated assembly processes due to the tape and reel packaging format.

Part Context

This component belongs to the widely used 1N4728A through 1N4764A series of 1.0-watt Zener diodes manufactured by Microsemi (now Microchip Technology). The series covers an extensive voltage selection from 3.3V to 100V. The 1N4756 variant specifically targets the 47V regulation point within this lineup, offering a balance of power handling and voltage precision in a standard axial-lead form factor.

Replacement Considerations

Direct replacements include other manufacturers' 1N4756A equivalents in the DO-41 package. For tighter tolerances, consider the 1N4756D variant (1% tolerance), and for standard tolerances, the 1N4756A (5% tolerance). Surface mount alternatives such as the SMAJ4756A series are available if board space constraints require a change in package type.

FAQ

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

The 'C' suffix indicates a Zener voltage tolerance of plus or minus 2%, which is tighter than the standard 5% tolerance found in the 'A' suffix version.

Is the device sensitive to electrostatic discharge?

No, the device is nonsensitive to ESD per MIL-STD-750 Method 1020.

What is the maximum forward voltage of the diode?

The maximum forward voltage is 1.2 volts at a forward current of 200 mA.