STT800N18P55XPSA2

Overview

The Infineon STT800N18P55XPSA2 is a soft starter module utilizing pressure contact technology and Advanced Medium Power Technology (AMPT). It features an integrated optimized heatsink for efficient thermal management. The device supports a repetitive peak forward off-state and reverse voltage of 1800 V, with a maximum junction temperature of 125 °C and a start-up limit of 155 °C. Key electrical parameters include an overload current of 800 A at 21 seconds, a surge current rating of 6300 A, and a threshold voltage of 0.9 V. The slope resistance is specified at 0.83 mΩ, while the thermal resistance from junction to ambient is 0.196 K/W.

Feature Summary

• Pressure contact technology ensures high reliability
• Advanced Medium Power Technology (AMPT) design
• Integrated optimized heatsink for cooling

Applications

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

Procurement Notes

Verify the component authenticity by checking the serial number format against Infineon specifications. Confirm that the ordering suffix matches the exact technical requirements. Ensure the datasheet revision aligns with your design documentation. Cross-reference the part number with official manufacturer channels to avoid counterfeit components.

Selection Notes

Evaluate the thermal resistance values under specific airflow conditions to ensure adequate heat dissipation. Consider the critical rate of rise of on-state current when designing gate drive circuits. Verify that the operating temperature range meets the environmental constraints of the intended application.

Part Context

This module belongs to the STT series of soft starter modules designed for medium power applications. It integrates thyristor and diode functions within a single compact package. The design focuses on simplifying power electronics layouts by combining multiple semiconductor elements into one robust unit.

Replacement Considerations

Consult the official Infineon product selection guide for direct replacements. Verify compatibility regarding voltage ratings, current capacities, and physical dimensions before substitution.