... Negative plane layers are usually preferred by fabricators because they're easier to work with and have smaller file sizes than positive layers. Remember, boards | CIRCUIT BOARDS PROTOTYPE | are manufactured en masse and must be stepped out into a panelized form. The result: Data sets with lots of unnecessary positive planes swell exponentially, | CIRCUIT BOARDS PROTOTYPE | bog down CAM systems, and crash photoplotters. After the basic prep work is completed, step into the fabrication analysis arena, where the game is one | CIRCUIT BOARDS PROTOTYPE | of checks and balances. You've got your design rules; fabricators have theirs. Checks and balances can resolve any conflicts between the two. Take soldermask layers, | CIRCUIT BOARDS PROTOTYPE | for instance. Often, these layers are not "intelligent" layers within a CAD tool; that is, there is not much in the way of capability checking | CIRCUIT BOARDS PROTOTYPE | within the tool. As a result, these are among the more troublesome layers for fabricators. The solution here is a fabrication analysis tool that can | CIRCUIT BOARDS PROTOTYPE | handle such issues as clearances, coverage, webbing, and so ...
[ Circuit Boards Prototype ]


... free of solder mask coating or be completely closed by means of a special filling process. Curing of the solder mask coating must also | CIRCUIT BOARDS PROTOTYPE | concur with that of the chemical gold plating as it is exposed to hydrogen in the 90° C nickel baths. One has the choice between | CIRCUIT BOARDS PROTOTYPE | an expensive coat-ing system or a subsequent infrared solidification which, in turn, also calls for further investment in facilities. The potential for a lead-free alternative | CIRCUIT BOARDS PROTOTYPE | For a lead free altenative provided the PCB manufacturer ensures optimal conditions for immersion nickel gold coating, the results of wave soldering are equally good | CIRCUIT BOARDS PROTOTYPE | to solder levelling. Good storage ability is also achieved by covering the pad and smd sides with gold. In our opinion, however, immersion nickel / | CIRCUIT BOARDS PROTOTYPE | gold will never become an established alternative to HAL. As already mentioned, the processing costs are the greatest handicap for this method. However, due to | CIRCUIT BOARDS PROTOTYPE | the lack of other alternatives in the lead-free future immersion nickel / gold ...
[ Circuit Boards Prototype ]


... pass RoHS compliance. Since 2004 we deliver our customers with RoHS compliant PCBs in different surface finishes – including also lead free Hot-Air-Levelling, Immersion | CIRCUIT BOARDS PROTOTYPE | Tin, Immersion Silver and Immersion Gold. “The printed circuit boards manufactured for the above P.O. meet the requirements of the directive 2002/95/EC of the European | CIRCUIT BOARDS PROTOTYPE | Parliament – The Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment (RoHS).” | SURFACE PRINTING | > How largely may | CIRCUIT BOARDS PROTOTYPE | a drilling or a milling be, in order to be able to overprint it with a peelable solder resist ? Drillings (diameter) smaller 1.80 mm | CIRCUIT BOARDS PROTOTYPE | or milling (area) smaller 1.80 mm x 1.80 mm can be overprinted process-reliable. Drillings of 1.80 mm up to 2.60 mm can also be overprinted, | CIRCUIT BOARDS PROTOTYPE | however without a result warranty, because some drillings of this size can remain sporadically open. The reason is that on the one hand the lacquer | CIRCUIT BOARDS PROTOTYPE | does not have a sufficient viscosity and during the printing process it would ...
[ Circuit Boards Prototype ]