STT1400N18P55XPSA2

Overview

The Infineon STT1400N18P55XPSA2 is a soft starter module utilizing pressure contact technology and Advanced Medium Power Technology (AMPT). It features an integrated optimized heatsink for direct mounting without thermal interface material. The module supports a repetitive peak forward off-state and reverse voltage of 1800 V, with a maximum junction temperature of 155 °C during startup. Overload current capacity reaches 1300 A at 21 seconds, while the surge current limit is 10500 A for 10 ms. The on-state threshold voltage is 0.9 V, and slope resistance is 0.49 mΩ.

Feature Summary

• Pressure contact technology ensures high reliability and robust mechanical connections.
• Advanced Medium Power Technology (AMPT) optimizes semiconductor performance.
• Integrated optimized heatsink allows installation without thermal interface material.

Applications

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

Procurement Notes

Verify component authenticity by checking the serial number format against official Infineon labeling standards. Confirm that the part matches the specific W1C topology and terminal configuration required for your circuit design. Ensure proper handling procedures are followed to maintain the integrity of the pressure contact terminals and internal silicon pellets during installation.

Selection Notes

Select this module when applications require high overload tolerance and compact integration without external thermal grease. Verify that the system can accommodate the specified gate trigger requirements and critical rate of rise of on-state current limits. Ensure the cooling infrastructure aligns with the provided transient thermal impedance data for the expected conduction angles.

Part Context

This component belongs to Infineon's Soft Starter Module series designed for phase control applications. It is part of a family offering various current ratings within a standardized footprint, facilitating easy integration into existing contactor-compatible designs. The series emphasizes reduced complexity and space-saving through integrated thermal management solutions.

Replacement Considerations

Direct replacements must match the 1800 V rating, 1300 A overload capacity, and W1C topology. Consider modules from the same STT series with identical pressure contact dimensions and terminal layouts to ensure mechanical compatibility without redesigning the mounting structure or electrical connections.

FAQ

What is the maximum junction temperature after startup?

The maximum junction temperature after startup (Tvj max st) is 155 °C, provided the reverse/forward voltage ratio remains below 80% of the rated values.

How is the module mechanically connected?

The module uses pressure contact technology with M6 terminal connections requiring a torque of 10 Nm ± 10%. Control terminals follow DIN 46 244 A specifications.

What is the critical rate of rise of on-state current?

The critical rate of rise of on-state current ((diT/dt)cr) is 250 A/µs, measured according to DIN IEC 747-6 standards.