Can SKIM455GD12T4D1 Replace SKIM200GD126D?

Selecting the right power module for your application involves understanding the specifications and capabilities of the components in question. Here, we compare the SKIM455GD12T4D1 and SKIM200GD126D power modules from Semikron to determine whether they can be used interchangeably.

Overview of SKIM455GD12T4D1

The SKIM455GD12T4D1 is a high-performance IGBT module designed for industrial applications. It features:

• Voltage Rating: 1200V
• Current Rating: 455A
• Technology: IGBT (Insulated Gate Bipolar Transistor)
• Configuration: Sixpack module, which integrates three half-bridge circuits into a single package
• Applications: Suitable for inverters, motor drives, and other high-power applications

Overview of SKIM200GD126D

The SKIM200GD126D is another IGBT module from Semikron, designed for high efficiency and reliability. It has:

• Voltage Rating: 1200V
• Current Rating: 200A
• Technology: IGBT
• Configuration: Similar sixpack module
• Applications: Ideal for similar high-power applications including motor drives and inverters

Key Similarities

Voltage Rating: Both modules have a voltage rating of 1200V, making them suitable for high-voltage applications.

Configuration: Both modules are designed as sixpack modules, which means they contain three half-bridge circuits. This makes them suitable for similar applications such as inverters and motor drives.

Technology: Both use IGBT technology, known for combining the high input impedance and fast switching of MOSFETs with the low on-state conduction losses of bipolar transistors.

Applications: Due to their similar voltage rating and configuration, both modules can be used in high-power industrial applications such as motor drives, power supplies, and inverters.

Key Differences

Current Rating: The most significant difference between the two modules is their current rating. The SKIM455GD12T4D1 has a current rating of 455A, more than double the 200A rating of the SKIM200GD126D. This difference in current capacity means the SKIM455GD12T4D1 can handle significantly higher power loads.

Thermal Performance: Higher current ratings usually correlate with higher power dissipation. Thus, the thermal management requirements for the SKIM455GD12T4D1 are more demanding compared to the SKIM200GD126D.

Physical Size and Mounting: While both modules are from the same series and likely have similar form factors, the higher current module (SKIM455GD12T4D1) might have differences in size, heat sinking requirements, and mounting options compared to the SKIM200GD126D.

Interchangeability

Given their similar voltage ratings, technology, and configurations, the SKIM455GD12T4D1 and SKIM200GD126D could theoretically be interchanged in applications requiring these characteristics. However, the key factor in determining interchangeability is the current rating:

• Current Handling: The SKIM455GD12T4D1, with its higher current rating, can replace the SKIM200GD126D in applications where higher current capacity is needed or where the system can benefit from an upgraded module. However, replacing the SKIM200GD126D with the SKIM455GD12T4D1 requires ensuring that the system can handle the increased power dissipation and has adequate thermal management.
• Thermal Management: If you are considering replacing the SKIM200GD126D with the SKIM455GD12T4D1, ensure that your thermal management system (heat sinks, cooling systems) can handle the increased heat output.
• Cost and Availability: Higher current modules are generally more expensive. Evaluate whether the increased cost aligns with the benefits for your application.

Conclusion

While the SKIM455GD12T4D1 can potentially replace the SKIM200GD126D due to their similar voltage ratings and configurations, the decision hinges on the current handling capacity and thermal management considerations. In applications requiring higher current, the SKIM455GD12T4D1 is a suitable upgrade. Conversely, for applications within the 200A current range, the SKIM200GD126D remains a cost-effective and efficient choice. Always ensure compatibility with your system’s thermal management capabilities before making a substitution.