Multilayer Circuits Shop B2B Online-Direct-Marketplace for PCBs Interconnect Carriers

... deadline draws to the compulsory implementation of lead-free regulations (ROHS), the greater the attempts to achieve lead-free solutions that are comparable to the “all-purpose | MULTILAYER CIRCUITS SHOP | answer” SnPb in terms of technology and cost. Two systems are particularly predominant: tin/silver/copper (SnAgCu) and, more recently, stabilised tin/copper (SnCuNi). Although the level of | MULTILAYER CIRCUITS SHOP | efficiency of both systems is not yet completely clear, the following presents the latest information: SnAgCu There is more experience in the field of silver | MULTILAYER CIRCUITS SHOP | systems. Here, differentiation is made between the Sn-3.5Ag-0.7Cu, Sn-4Ag-0.5Cu and Sn-3Ag- 0.5Cu systems which vary in use from continent to continent. However, the agreed expert | MULTILAYER CIRCUITS SHOP | opinion (IPC/Soldertech-Conference Brussels 2003) is that the technological differences between the three systems are negligible. Sn-3.5Ag- 0.7Cu is the most common alloy in Europe. SnCuNi | MULTILAYER CIRCUITS SHOP | Although there are even fewer field results for the stabilised tin/copper system Sn-0.7Cu-0.1Ni, it ...
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... new data files. You are able to modify the following specs to your actual demand: Number of Units of each PCBs / E-Test / | MULTILAYER CIRCUITS SHOP | Methods of Shipment / Lead Times. Please note that you can send new data files, but you can not modify technical features like: changing “2-Layers | MULTILAYER CIRCUITS SHOP | to 4-layers” or “no silk screen to silkscreen”. If you want to modify those technical features, you have to start from the beginning, which means, | MULTILAYER CIRCUITS SHOP | make up a new calculation, put the board into the shopping basket, order and send the new data files. | STANDARD LEAD TIMES | > | MULTILAYER CIRCUITS SHOP | Do I have to expect surcharges? A The selected Standard Lead Time is extended by those additional working days, which are highlighted in the following | MULTILAYER CIRCUITS SHOP | quotation in the lines “surcharge on standard lead times", "silk screen" and "material / V-cutting". B In order to keep our delivery-on-time-commitment a surcharge on | MULTILAYER CIRCUITS SHOP | the lead time is imposed if markets rise sharply. In generally: The day, on which the order and the complete production data are made ...
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... ML Lamination Press The book is then transferred to the vacuum lamination press proved to be a major step forward. In this approach, the | MULTILAYER CIRCUITS SHOP | books are enclosed in a vacuum tight chamber, permitting lamination to take place in a vacuum environment. The press applies heat and pressure so that | MULTILAYER CIRCUITS SHOP | the thermosetting resin in the prepreg undergoes cross-linking which bonds all layers together. The press then goes through a critical cooling cycle before the book | MULTILAYER CIRCUITS SHOP | is removed and pulled apart. The edges of the multilayer panels are then trimmed to eliminate any of the resin outflow and to smooth out | MULTILAYER CIRCUITS SHOP | uneven or rough edges. Special attention was given to environmental compatibility and safety conditions. Furthermore, the facility was designed to accommodate future expansions. The requirements | MULTILAYER CIRCUITS SHOP | were as follows: - LP formats: Up to 640 x 610 mm - LP thickness: 0.30 – 10.0 mm - Materials: FR- 4, BT-epoxy, polyimide, | MULTILAYER CIRCUITS SHOP | “Thermount”/RCF - Heat ramp rates: 5-6°C/min. (measured as a package) Great emphasis ...
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