1N5385B-TP

Overview

The MCC 1N5385B-TP is a 5-watt silicon unidirectional voltage regulator diode housed in the DO-15 axial leaded package. It provides a nominal Zener voltage of 170 V with a ±5% tolerance. The device operates within a junction temperature range of -55°C to +200°C and features a maximum thermal resistance of 15°C/W from junction to lead. Electrical characteristics include a maximum dynamic impedance of 380 Ohms, a test current of 8 mA, and a maximum reverse leakage current of 0.5 µA at 129 V.

Feature Summary

• Provides stable voltage regulation for high-voltage applications up to 200 volts
• Features low leakage current and robust epoxy encapsulation meeting UL 94 V-0 flammability ratings
• Designed for high power dissipation with efficient thermal management capabilities

Applications

• Voltage regulation circuits requiring high breakdown voltages
• Surge protection and clamping applications
• Reference voltage sources in industrial electronics

Procurement Notes

Verify component authenticity by checking for authorized distributor markings and matching datasheet specifications. Ensure ordering suffixes align with required packaging formats such as bulk or tape and reel. Confirm RoHS compliance status and halogen-free availability if specific environmental standards are mandated for the target assembly process.

Selection Notes

Select this component when a 170 V Zener voltage with 5 W power handling is required. Consider the DO-15 package dimensions for PCB layout constraints. Evaluate thermal derating requirements based on ambient operating temperatures to ensure the junction temperature remains within safe operational limits during continuous DC conditions.

Part Context

This part belongs to the 1N5338B through 1N5388B series of 5 Watt Zener Diodes manufactured by Micro Commercial Components. The series covers a wide voltage range from 5.1V to 200V, offering standardized axial-leaded packages suitable for general-purpose voltage regulation tasks across various electronic equipment designs.

Replacement Considerations

Compatible substitutes include other 170V 5W Zener diodes in the DO-15 package with similar electrical tolerances. Verify that alternative parts match the maximum dynamic impedance and surge current ratings to maintain circuit performance integrity.