Tokyo announced today the development of a new compact version of its DIPIPM power semiconductor modules, designed for consumer and industrial equipment such as packaged air conditioners and heat pump heating and hot water systems. The Compact DIPIPM series includes two models: the PSS30SF1F6 (30A / 600V) and the PSS50SF1F6 (50A / 600V), with sample shipments starting September 22, 2025.
By incorporating reverse-conducting insulated-gate bipolar transistors (RC-IGBTs), the modules reduce their footprint to approximately 53% of Mitsubishi Electric’s conventional Mini DIPIPM Ver.7 series, enabling smaller inverter substrates for packaged air conditioners and other applications. The new products will be showcased at PCIM Asia Shanghai 2025 from September 24–26.
Driving Compact, Efficient Inverter Designs
Power semiconductor modules efficiently convert electricity from DC to AC, and demand has been rising steadily. In packaged air conditioners and heat pump systems, these modules control outdoor unit compressors and fans. As the global shift to inverter technology accelerates to improve energy efficiency, there is an increasing need for smaller, more compact components that reduce system footprint while maintaining performance.
Since 1997, Mitsubishi Electric’s DIPIPM intelligent power modules—which integrate switching elements and control ICs in a transfer mold structure—have been widely used in air conditioners, washing machines, heating systems, and industrial motors. These modules have helped achieve compact inverter designs and enhanced energy efficiency.
The new Compact DIPIPM series reduces module footprint by approximately 47% compared to conventional products.
Enhanced Features and Low-Temperature Operation
- Smaller Module Size: RC-IGBT adoption enables compact inverter substrate design.
- Arm Short-Circuit Protection: A new interlock function simplifies design and enhances reliability.
- Easy Replacement: Insulation distance from terminals to heat sink remains consistent with conventional models.
- Low-Temperature Performance: The module operates stably down to -40°C, supporting adoption in cold regions such as North America and Northern Europe.
By enabling more compact, efficient inverter-equipped air conditioning and heat pump systems, the new modules support energy savings and contribute to carbon neutrality goals.
