... diameters smaller than 0.016 in (0.4 mm) 3. Blind vias 4. Thin, flexible materials If high aspect ratio and small holes are processed in | PRINTED WIRING BOARDS PLANT | the vertical mode, vibration is recommended for each processing stage. The DMS-E process includes no cleaning sequence, therefore copper surfaces should be clean and holes | PRINTED WIRING BOARDS PLANT | should be free of all drill debris. This may be achieved by chemical cleaning (e.g. ultrasonics) or by brushing with an ultrasonic section to remove | PRINTED WIRING BOARDS PLANT | the drill debris prior to the DMS-E process. When processing double-sided panels through a horizontal line using sulfuric acid (e.g. Stabilizer) it is important to | PRINTED WIRING BOARDS PLANT | ensure that the through-holes are clean. This may be accomplished by introducing a desmear pretreatment. Used by over 150 PWB fabricators worldwide, the DMS-E system | PRINTED WIRING BOARDS PLANT | consistently delivers highly reliable plated through-holes on all commonly used laminate materials, PWB complexities and in a variety of operating conditions. Production-proven in both vertical | PRINTED WIRING BOARDS PLANT | and ...
[ Printed Wiring Boards Plant ]


... have to avoid or to limit. | IN ORDER TO ACHIEVE THIS GOAL |, not only the control of the own production processes is | PRINTED WIRING BOARDS PLANT | necessary, also as a starting point of the manufacturing is the procurement of qualitatively perfect products of our suppliers. Therefore obligate our suppliers to be | PRINTED WIRING BOARDS PLANT | able to manufacture in application of our consistent quality philosophy and in definition of methodology and realization provably the correct quality. For this among other | PRINTED WIRING BOARDS PLANT | things counts the obligation of our suppliers to attach to each supply a test certificate. This demand is a component of our quality management system | PRINTED WIRING BOARDS PLANT | and we evaluate and control it continuously with an evaluation procedure. Beyond that the examinations are regulated in our house by employment regulations in the | PRINTED WIRING BOARDS PLANT | inspection of incoming goods. - In the case of | EACH INCOMING ORDER | we examine first the contract and the reproductibility. Hereby the complete | PRINTED WIRING BOARDS PLANT | manufacturing process is simulated, so that the possibilities of errors ...
[ Printed Wiring Boards Plant ]


... dependence of the material thickness What are the thickness tolerances of the base material FR4? a.) Material thickness 1,0 mm: +/- 0,12mm b.) Material | PRINTED WIRING BOARDS PLANT | thickness 1,5 mm: +/- 0,14 mm On which warping and twisting value does one have to count with the base material FR4? The base material | PRINTED WIRING BOARDS PLANT | manufacturers reserve themselves a tolerance of the twisting value up to 1 % with doublesided material and 1.5 % with singlesided material. Note: that the | PRINTED WIRING BOARDS PLANT | twisting value increases above average, if the copper allocation on the printed circuit board is locally very different. On requirement a reduction of the warping | PRINTED WIRING BOARDS PLANT | and twisting value can be reached by additional annealing. Which (net) surface of your production panel can be used for our printed circuit boards? Format | PRINTED WIRING BOARDS PLANT | of the standard manufacturing Single-sided Circuits: 614x508 mm Double-sided or plated thru hole Circuits: 608x508 mm Multilayer (ML): 596x493 mm extended Format, if conductive strips | PRINTED WIRING BOARDS PLANT | do not run directly at the edge Single- sided ...
[ Printed Wiring Boards Plant ]