AlSi Alloy Electronic PackagingGeneral DescriptionBaienwei AlSi alloys include:Silicon content: 27%,42%,50%,60% and 70%, mainly used in electronic packaging field. AlSi alloy can be used in substrates,housings,carriers and lids, having a better compatibility and heat dissipation to prolong the working life of high power modules. AlSi alloys have the features such as light weight,(density 2.4—2.7g/cm³),high thermal conductivity,low CTE,high stiffness,excellent machinability,weldability,surface plating performance,hermeticity,high temperature resistance and corrosion resistance etc. Baienwei adopts rapid solidification and subsequent machining technology, offering a series of electronic packaging services,including R&D,production,subsequent machining and plating. |
Material | Density g/cm³ | CTE 25℃ ppm/ ℃ | Thermal Conductivity 25℃ W/mk | Plateabillity | Machinability | Weldability | Formability |
Copper | 8.9 | 16 | 385 | Good | Good | Good | Good |
Titanium | 4.5 | 8.9 | 17 | Fair | Fair | Fair | Fair |
Cast Al6061 | 2.7 | 23 | 195 | Good | Good | Good | Good |
Kovar | 8.4 | 6 | 15 | Good | Good | Good | Good |
Cu85%w | 16.4 | 6.8 | 180 | Fair | Fair | Fair | Fair |
Cu85%Mo | 10 | 6.8 | 165 | Fair | Fair | Fair | Fair |
Al65%SiC | 3 | 6.8 | 170 | Poor | Poor | Poor | Poor |
AlSi27 | 2.6 | 17 | 175 | Good | Good | Good | Good |
AlSi50 | 2.5 | 11.5 | 140 | Good | Good | Good | Good |
AlSi70 | 2.43 | 7.5 | 120 | Good | Good | Good | Good |