1N4731A-TP

Overview

The MCC 1N4731A-TP is a silicon planar Zener diode housed in a hermetic DO-41G glass package. It provides a nominal voltage of 4.3 V with a tolerance of ±5%. The device dissipates up to 1 W at 50°C ambient temperature and operates within a junction temperature range of -65°C to +200°C. Key electrical parameters include a maximum reverse leakage current of 10 µA at 1 V, a forward voltage drop of 1.2 V at 200 mA, and a dynamic impedance of 9 Ohms.

Feature Summary

• Hermetic glass package construction for environmental stability
• Silicon planar technology for reliable voltage regulation
• Lead-free finish compliant with RoHS directives

Applications

• Voltage reference circuits
• Overvoltage protection
• Power supply regulation

Procurement Notes

Verify the component status as End-of-Life (EOL) prior to procurement. Confirm that the specific ordering suffix matches the required packaging format, such as tape and reel or bulk. Ensure sourcing from authorized distributors to guarantee authenticity and traceability. Review the manufacturer's product change notifications for any updates regarding specifications or manufacturing locations.

Selection Notes

Select this component based on its 4.3 V nominal breakdown voltage and ±5% tolerance requirement. Consider the 1 W power dissipation capability and the thermal resistance characteristics when designing heat management strategies. Verify that the operating temperature range meets the application's environmental demands. Check compatibility with the target PCB footprint for the DO-41G axial leaded package.

Part Context

This part belongs to the 1N4728A through 1N4761 series of 1.0 Watt Zener diodes manufactured by Micro Commercial Components. The series covers a wide voltage selection from 3.3 Volts to 75 Volts. The 'A' suffix indicates a 5% voltage tolerance, distinguishing it from standard or tighter tolerance variants within the same family.

Replacement Considerations

Direct substitutes include Nexperia USA Inc. equivalents. Other manufacturers producing identical 1N4731A specifications in DO-41 packages may also serve as functional replacements, provided their electrical ratings match the original requirements.

FAQ

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

The 'A' suffix designates a 5% tolerance on the nominal Zener voltage.

Is the device RoHS compliant?

Yes, the device features a lead-free finish and is RoHS compliant.