Alsic (Aluminum Silicon Carbide), a metal matrix composite materials suitable for the base plates for insulated gate bipolar transistor (IGBT) is used in high-power traction, power control, hybrid power systems, electrical vehicles and fly-by-wire applications. Alsic has been tested and meets the requirements of the Restriction of Hazardous Substances Directive of the European Union Parliament (RoHS).

The isotropic coefficient of thermal expansion value thermal (CTE) Alsic low-9 (8 ppm / A ° C: 30 – 100Â ° C) is compatible with the value of thermal expansion of the matrix or substrate used in applications IGBT. Alsic CTE match reduces the mechanical stresses on IGBT die and substrates that is induced by thermal power cycles, improving the reliability of the attachment of substrate and reduces die cracking failures.

The CTE Alsic compatible device eliminates the need for material compensation voltage required layers in Cu (CTE = 17 ppm / A ° C) base plate assemblies. Elimination of stress compensation materials simplifies assembly and reduces the thermal resistance for Alsic systems Alsic systems to have equal or better thermal dissipation, Cu base plate assemblies.

In high power applications (> 1200 V / 400 V), the modules IGBT base plates mounted Alsic found to have a service reliability of many tens of thousands of cycles of thermal energy in copper equivalent systems.

Alsic is a light (1 / 3 that of Cu), which makes it an ideal material for cold IGBT weight sensitive applications. Alsic also has higher strength and stiffness that Cu, which, combined with its lightweight nature, makes the assemblies more tolerant Alsic shock and vibration.

Alsic net near the manufacturing process so both produces the composite material and manufactures the product geometry, allowing the design of IGBT base plates with a dome profile. This geometry improves interface thermal contact with cold plates and coolers, adding to an advanced thermal management Alsic qualities. These manufactured ina zone 190 mm standard x 140 mm, 140 mm x 130 mm and 140 mm x 70 mm base plate formats (shown), as well as custom formats.

for more on higher efficient thermal management products and designs that can reduce energy consumption visit http://www.alsic.com

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