... | Back to our Client-Service-Forum Dear Sir or Madam, welcome to our client-service-forum for printed circuit boards! Here we have chosen specific topics you | CIRCUIT BOARDS SHOP | have ask for to help you finding a suitable answer. Please click a topic below to view frequently asked questions in that topic. | WHICH | CIRCUIT BOARDS SHOP | DATA FORMATS DO YOU PREFER? | DIN EN ISO 9001:2000 > Are you certified? Hot shot > Do you offer such a service? Methods of | CIRCUIT BOARDS SHOP | Shipment > Which modes of shipment do you offer? Standard lead times > Surcharge? UL-Approval > What and for which is that? Delivery in Panelized | CIRCUIT BOARDS SHOP | Boards (PB) > What is to be considered? Design Rule Check (DRC) > What is that? MAA's Basic Jet Line> What are MAA's and how | CIRCUIT BOARDS SHOP | can i calculate this? Multi-Panel (MP) > What is that and which one must consider? Surface (2) > RoHS-Compliance (leadfree)? Test Points > How can | CIRCUIT BOARDS SHOP | i calculate the test points? Working Days > What is your definition of a working day? You may also be interested in... Password > Which | CIRCUIT BOARDS SHOP | syntax is ...
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... layers. Remember, boards are manufactured en masse and must be stepped out into a panelized form. The result: Data sets with lots of unnecessary | CIRCUIT BOARDS SHOP | positive planes swell exponentially, bog down CAM systems, and crash photoplotters. After the basic prep work is completed, step into the fabrication | PRINTED CIRCUIT | CIRCUIT BOARDS SHOP | BOARDS | analysis arena, where the game is one of checks and balances. You've got your design rules; fabricators have theirs. Checks and balances can | CIRCUIT BOARDS SHOP | resolve any conflicts between the two. | TAKE SOLDERMASK LAYERS |, for instance. Often, these layers are not "intelligent" layers within a CAD tool; that | CIRCUIT BOARDS SHOP | is, there is not much in the way of capability checking within the tool. As a result, these are among the more troublesome layers for | CIRCUIT BOARDS SHOP | fabricators. The solution here is a fabrication analysis tool that can handle such issues as clearances, coverage, webbing, and so forth. For instance, most fab | CIRCUIT BOARDS SHOP | shops want the largest possible | CLEARANCES | in a solder layer so that mask ...
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... of the images is of a standard that will enable a good quality board to be produced. Another important criteria is the presence of | CIRCUIT BOARDS SHOP | orientation marks within the boundary of board. These marks could be the board reference so long as it cannot be read from the other side. | CIRCUIT BOARDS SHOP | (This is for your protection to prevent the boards made inside out). Images should comply with design rules that will result in a board that | CIRCUIT BOARDS SHOP | will meet performance and cost requirements. - Scale must be given, tapes securely stuck to the backing sheet, track to pad & track to track | CIRCUIT BOARDS SHOP | joints complete and the backing sheet clean. - Scale must be given and be at least 2:1. Plots must also offer sharp edge definition and | CIRCUIT BOARDS SHOP | traces dense enough for blocking light when photographing. - Preferred on 7mil (178mm) thick base for stability. Films should be plotted on laser photoplotter or | CIRCUIT BOARDS SHOP | on vector photoplotter using a minimum resolution of ½mil (13mm). - Preferred in Gerber® format although accepted in other formats. ...
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