1N4757CP/TR8

Overview

The Microchip Technology 1N4757CP/TR8 is a silicon Zener diode with a nominal voltage of 51V and a tight tolerance of ±2%. It operates in a DO-41 (DO-204AL) plastic axial package, dissipating up to 1.0W at 25°C. The device features a maximum dynamic impedance of 95Ω and a reverse current of 5µA. It is supplied in tape and reel packaging for automated assembly.

Feature Summary

• Provides precise voltage regulation with ±2% tolerance
• Utilizes void-free transfer molded epoxy body
• Offers flexible axial-lead mounting terminals
• Non-sensitive to electrostatic discharge

Applications

• Voltage regulation over broad operating ranges
• Reference voltage sources
• Protection against voltage transients

Procurement Notes

Verify the specific suffix configuration matches the required tolerance and packaging format. Confirm RoHS compliance status if environmental regulations apply. Ensure the supplier provides traceability documentation consistent with Microsemi manufacturing standards.

Selection Notes

Select this component when a stable 51V reference with high precision is required. The plastic construction offers lower thermal resistance compared to glass options. Verify that the circuit design accommodates the specified dynamic impedance and power dissipation limits.

Part Context

This part belongs to the 1N4728AP through 1N4764AP series of 1-watt Zener diodes. The 'C' suffix indicates a tighter 2% voltage tolerance compared to standard variants. The 'TR8' designation specifies the tape and reel packaging format.

Replacement Considerations

Equivalent parts include other 51V Zener diodes with ±2% tolerance in the DO-41 package. Surface mount equivalents are available as SMAJ4757 or MLL4757.