... in maintaining annular ring requirements and copper spacing on internal layers. To meet manufacturing specs, the fabricator might have to modify the data, and | PRINTED WIRING BOARDS PRODUCER | that's the last thing you want. So now we have an alternate reality: You've finished the PCB layout (check out those negative planes!). You output | PRINTED WIRING BOARDS PRODUCER | the 274X and IPC-D-356 netlist files. The data are fed into a fab analysis tool and run through their paces. Clearances are good. No possible | PRINTED WIRING BOARDS PRODUCER | soldermask flaking. Spacing between the drills is just right. You hand the data set to the fabricator, and voila! No unexpected phone calls, no changes | PRINTED WIRING BOARDS PRODUCER | in the layout, and the fabricator happily sends back a good set of boards on time. Our recommendations for the correct storage of PCBs and | PRINTED WIRING BOARDS PRODUCER | MLBs A.1 ) Brief desricption of the problem: PCB`s, especially Multilayer boards are extremly sensitive towards moisture The microscopic structure of the Multilayer material develops | PRINTED WIRING BOARDS PRODUCER | a strong capillary power that soaks up the humidity of the ...
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... in the further course of processing management. Lead-free solderings also have serious disadvantages, as hot air tin surfacing exposes the multi-layers to higher processing | PRINTED WIRING BOARDS PRODUCER | temperatures and copper leaching effects. would briefly like to explain why chemical silver is the lead-free procedure of the future, and why it will be | PRINTED WIRING BOARDS PRODUCER | the focus of our future investments in the field of surface refinement: UNPROBLEMATIC WASTE WATER PROCESSING Similarly to chemical tin surfacing, it is a non-electrical, | PRINTED WIRING BOARDS PRODUCER | auto-catalytic procedure based on the contrasting electro-negativity of copper and the more “precious” silver. The advantages of this processing manner compared with chemical tin are | PRINTED WIRING BOARDS PRODUCER | fewer processing steps and lower rinsing temperatures (30 – 50 C°). From the printed circuit board manufacturer’s viewpoint, one strong point in favour of the | PRINTED WIRING BOARDS PRODUCER | silver procedure is the fact that waste water processing is unproblematic, whereas Imm Ag has had problems with toxic gold chemistry and chemical tin due | PRINTED WIRING BOARDS PRODUCER | to ...
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... | | OUR COMPANY | and its associates respect your right to privacy and wish, therefore, to inform you how we deal with your | PRINTED WIRING BOARDS PRODUCER | personal data. | PROTECTION OF PERSONAL DATA | is of great importance to many internet users and an important basis for a pleasant and satisfactory | PRINTED WIRING BOARDS PRODUCER | use of the internet. | CUSTOMER AND WEB SITE-VISITOR | questions and considerations regarding data protection are taken very seriously by us. We assure you, | PRINTED WIRING BOARDS PRODUCER | both as PCB purchasers as well as visitors to our web site, that we do not collect any of your personal data unless you have | PRINTED WIRING BOARDS PRODUCER | specifically placed it at our disposal. We use the information you provide to execute orders and to make your PCB purchase as simple as possible. | PRINTED WIRING BOARDS PRODUCER | | ON NO ACCOUNT | do we collect personal data referring to race or ethnic background, political opinion, religious or philosophical views, union membership, health | PRINTED WIRING BOARDS PRODUCER | or sex life. We collect no personal data whatsoever from persons merely visiting our web site, unless the web site visitor ...
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