... Panel Plating a Flash of Copper The panels are online in a wet state transferred to our automatic electrolytic copper plating lines to get | MULTILAYER CIRCUITS PRODUCTION | a flasch of copper.. The panels are attached to plating racks. When the racks are moved to the loading station, the system computer instructs the | MULTILAYER CIRCUITS PRODUCTION | hoist to pick up the rack and begin the plating cycle. The copper plating time is approximately one hour. Electrolytic copper of minimum thickness 12 | MULTILAYER CIRCUITS PRODUCTION | microns is deposited on the surface of the panel and on the walls of the drilled holes. This is achieved by applying an electric current | MULTILAYER CIRCUITS PRODUCTION | to a cell comprising the panel (the cathode) and a set of copper bars (the anodes) suspended in a conducting medium (the electrolyte). A plating | MULTILAYER CIRCUITS PRODUCTION | history log is maintained on the shop floor control computer which assists the operator in making minor adjustments to the plating current. Finally, the panels | MULTILAYER CIRCUITS PRODUCTION | are rinsed and returned to the unload station. Sample measurements are made from each rack of panels to confirm ...
[ Multilayer Circuits Production ]


... With the information in this format coming directly from the engineering CAD system, there's no danger of the fabricator "reverse engineering" the netlist from | MULTILAYER CIRCUITS PRODUCTION | the Gerber files. Next up are the internal plane layers. For some reason, CAD engineers like them to be "positive," but those types of layers | MULTILAYER CIRCUITS PRODUCTION | lead to huge file sizes. Negative plane layers are usually preferred by fabricators because they're easier to work with and have smaller file sizes than | MULTILAYER CIRCUITS PRODUCTION | positive layers. Remember, boards are manufactured en masse and must be stepped out into a panelized form. The result: Data sets with lots of unnecessary | MULTILAYER CIRCUITS PRODUCTION | positive planes swell exponentially, bog down CAM systems, and crash photoplotters. After the basic prep work is completed, step into the fabrication analysis arena, where | MULTILAYER CIRCUITS PRODUCTION | the game is one of checks and balances. You've got your design rules; fabricators have theirs. Checks and balances can resolve any conflicts between the | MULTILAYER CIRCUITS PRODUCTION | two. Take soldermask layers, for instance. Often, these ...
[ Multilayer Circuits Production ]


... | | INFRARED (IR) | Part of the electromagnetic spectrum between the visible light range and the radar range. | INFRARED FUSING | The | MULTILAYER CIRCUITS PRODUCTION | melting of tin / lead plating on PCB's using the energy given off by infrared waves | INSULATION RESISTANCE | The electrical resistance of the | MULTILAYER CIRCUITS PRODUCTION | insulating material between any pair of contacts, conductors, or grounding devices in various combinations. | INSULATION METAL SUBSTRATES (IMS) |  Insulated metal substrates (IMS), thermal | MULTILAYER CIRCUITS PRODUCTION | substrates, SMI or Alep Twin - there are many names for special PCB´s that were developed for one main purpose: to draw the undesired heat | MULTILAYER CIRCUITS PRODUCTION | from electric components off the circuit board at a reasonable cost and, if possible, saving space. | INTERFACIAL CONNECTION | A conductor which connects conductive | MULTILAYER CIRCUITS PRODUCTION | patterns on opposite sided of a PCB or other base. | INTERNAL LAYER (INNERLAYER) | A conductive pattern contained entirely within a multilayer PCB | | MULTILAYER CIRCUITS PRODUCTION | IMIDAZOL |Chemical compound of the formula C5 N2 HR3., application as ...
[ Multilayer Circuits Production ]