... material types and technologies and the comprehensive support of our PCB- Team. The calculation of the price is based accurately on the technical profile | CIRCUIT BOARDS ONLINE | of the individual PCB; there are no cross-subsidy and no lump sums. You pay only for the achievement, which must be actually furnished for the | CIRCUIT BOARDS ONLINE | production of your product. Our proven mass-production-express service (Rapid-Mass-Production) is offered also in this line | SELECTED CAPABILITIES: | Archiving Process Data Drill- / Milling | CIRCUIT BOARDS ONLINE | Program Archiving Customer Data Production Data Conversion E-Test optional Design Check UL - approval Design Adjustment Further Options | TECHNICAL SPECIFICATION: DELIVERY: | In Single | CIRCUIT BOARDS ONLINE | Board Format as well as in Panelized Board Arrays and Sub-Arrays with / without Fixing Tabs finished by Milling, Punching and Scoring to size. | | CIRCUIT BOARDS ONLINE | DATA-BASE FORMAT: | Gerber, ODB++, DPF Type of the Base Material: FR 4 and Special-Material Layers: Up to 24 Surface Protection: See List of Surfaces | CIRCUIT BOARDS ONLINE | [- ?-] Layer Build-Up: ...
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... and copper spacing on internal layers. To meet manufacturing specs, the fabricator might have to modify the data, and that's the last thing you | CIRCUIT BOARDS ONLINE | want. So now we have an alternate reality: You've finished the PCB layout (check out those negative planes!). You output the 274X and IPC-D-356 netlist | CIRCUIT BOARDS ONLINE | files. The data are fed into a fab analysis tool and run through their paces. Clearances are good. No possible soldermask flaking. Spacing between the | CIRCUIT BOARDS ONLINE | drills is just right. You hand the data set to the fabricator, and voila! No unexpected phone calls, no changes in the layout, and the | CIRCUIT BOARDS ONLINE | fabricator happily sends back a good set of boards on time. Our recommendations for the correct storage of PCBs and MLBs A.1 ) Brief desricption | CIRCUIT BOARDS ONLINE | of the problem: PCB`s, especially Multilayer boards are extremly sensitive towards moisture The microscopic structure of the Multilayer material develops a strong capillary power that | CIRCUIT BOARDS ONLINE | soaks up the humidity of the surrounding air. Even under very dry conditions ...
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... - and erroneously. By contrast, in 274X, all the aperture information is contained within the Gerber file, which can be read by most CAM | CIRCUIT BOARDS ONLINE | tools automatically. For netlists, IPC-D-356 is the preferred format for fabrication. It's widely used by many of the bare-board test-fixturing machines and is one of | CIRCUIT BOARDS ONLINE | the only true ways to identify power-to-ground shorts. With the information in this format coming directly from the engineering CAD system, there's no danger of | CIRCUIT BOARDS ONLINE | the fabricator "reverse engineering" the netlist from the Gerber files. Next up are the internal plane layers. For some reason, CAD engineers like them to | CIRCUIT BOARDS ONLINE | be "positive," but those types of layers lead to huge file sizes. Negative plane layers are usually preferred by fabricators because they're easier to work | CIRCUIT BOARDS ONLINE | with and have smaller file sizes than positive layers. Remember, boards are manufactured en masse and must be stepped out into a panelized form. The | CIRCUIT BOARDS ONLINE | result: Data sets with lots of unnecessary positive planes swell ...
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