STT1900N18P55XPSA1

Overview

The Infineon STT1900N18P55XPSA1 is a soft starter module utilizing pressure contact technology and Advanced Medium Power Technology (AMPT). It features an integrated optimized heatsink for high reliability. The module has a repetitive peak forward off-state and reverse voltage of 1800 V, with a maximum junction temperature of 125 °C. Overload current capacity is 1900 A at 21 seconds, while the surge current rating reaches 17000 A. The on-state threshold voltage is 0.9 V, and the slope resistance is 0.28 mΩ. Thermal resistance from junction to ambient is 0.084 K/W.

Feature Summary

• Pressure contact technology ensures high mechanical and electrical reliability
• Advanced Medium Power Technology (AMPT) optimizes performance
• Integrated optimized heatsink eliminates the need for thermal interface materials

Applications

• Soft starters
• Bypass switches
• Power controllers
• Static switches

Procurement Notes

Verify the exact ordering suffix against official documentation, as variations exist within the product family. Confirm that the specific part number matches the required technical specifications before procurement. Ensure compatibility with existing system designs and cooling requirements. Cross-reference datasheet parameters with application needs to prevent mismatches.

Selection Notes

Select this module based on its 1800 V blocking capability and 1900 A overload current rating. Consider the integrated heatsink design for simplified installation without thermal grease. Evaluate the thermal resistance values to ensure adequate heat dissipation in the target environment. Verify gate trigger characteristics match the control circuitry capabilities.

Part Context

This component belongs to Infineon's soft starter module series designed for phase control applications. It utilizes silicon pellets with pressure contact connections. The module is engineered for robust operation in industrial power electronics, offering a compact solution compared to traditional discrete setups.

Replacement Considerations

Check for alternative part numbers within the same product family that may offer different current ratings or voltage levels. Ensure any substitute maintains compatible mounting dimensions and terminal configurations. Verify thermal and electrical parameters meet or exceed original requirements.