1N5387B-TP

Overview

The MCC 1N5387B-TP is a 5-watt silicon Zener diode with a nominal voltage of 190V and ±5% tolerance. It operates in the DO-15 axial leaded package, supporting junction temperatures from -55°C to +200°C. Key electrical parameters include a maximum dynamic impedance of 450 Ohms at 5mA test current, a reverse leakage current of 0.5µA at 144V, and a maximum regulator current of 25mA. The device features a maximum forward voltage of 1.2V at 1.0A and offers high surge current capability.

Feature Summary

• Provides stable voltage regulation across a wide operating temperature range
• Features low thermal resistance for efficient heat dissipation
• Constructed with epoxy meeting UL 94 V-0 flammability ratings
• Designed for high-power pulse applications with robust surge handling

Applications

• High-voltage power supply regulation circuits
• Overvoltage protection stages in industrial equipment
• Voltage reference components in precision measurement systems

Procurement Notes

Verify compliance with RoHS directives and confirm the specific suffix designation matches project requirements. Ensure sourcing through authorized distributors to guarantee genuine parts and full traceability. Check datasheet specifications against environmental constraints before finalizing procurement decisions.

Selection Notes

Select this component when a 190V regulation point is required within a 5W power envelope. Consider the DO-15 package dimensions for board layout compatibility. Evaluate thermal management needs based on the specified junction-to-lead thermal resistance values under continuous DC operation 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 broad voltage range from 5.1V to 200V, utilizing standardized JEDEC registration for interchangeability. The B-suffix indicates a standard ±5% tolerance band for the nominal Zener voltage.

Replacement Considerations

Public confirmed substitute: 1N5387BRLG (onsemi). Verify pinout compatibility and thermal characteristics before substitution.