To achieve the specified performance of the device, the mounting surfaces should meet the following mechanical specifications:
• Flatness ≤ 20 μm over the sub-module area
• Flatness ≤ 100 μm over whole heat-sink
• Roughness Ra ≤ 1.6 μm
The heat-sink contact surfaces should be machined without ridges, steps or grooves.
ABB recommends the use of nickel-plated heat-sinks. StakPaks have a nickel-plated copper cover and the sub-modules nickel-plated molybdenum-copper base-plates.
If you want to purchase a product, need any pricing information or need help or support from ABB, please contact your local partner.