Printed Wiring Boards Producer Circuit Board Prototypes to Production.

... Not only is the chemical silver refinement uncomplicated and reliable, but once the manufacturing parameters have been set they can be dependably utilised for | PRINTED WIRING BOARDS PRODUCER | further processing and continued use. Due to the thin surface layer – a thickness of 0.15 – 0.3 mµ is recommended – the surface of | PRINTED WIRING BOARDS PRODUCER | the pad is smoother and therefore there are, even in fine pitch areas, no restrictions when assembling. The silver functions merely as a protection against | PRINTED WIRING BOARDS PRODUCER | oxidation, and the actual solder point is between the copper and chemical tin, therefore the solder point is absolutely stable. It fulfills all UL requirements | PRINTED WIRING BOARDS PRODUCER | (UL796 specif.) and meets the usual requirements of automobile manufacturers: Test AlphaSTAR Result Requirement SIR 85°C/85%RH 2.46+9 24h Passed >1E+8;IPC-4553 IPC-TM-650 2.6.3.5. 3.15E+9 96h Passed | PRINTED WIRING BOARDS PRODUCER | SIR 35°C/85%RH 100VDC 3.56E+11 24h Passed >1E+10;IPC-4553 and GR-78 (Bellcore) IPC-TM-650 2.6.3.5 4.62E+11 96h Passed EM 10V bias, 100V Test, 2.46E+9 24h initial Resistance no | PRINTED WIRING BOARDS PRODUCER | higher than ...
[ Printed Wiring Boards Producer ]


... contain the following information to ensure that the finished board is to your requirements. - Always required even when a drill file is supplied, | PRINTED WIRING BOARDS PRODUCER | to enable inspection of panels immediately after drilling and finished boards prior to despatching. Hole sizes must be clearly represented with distinct differences between each | PRINTED WIRING BOARDS PRODUCER | size. Tolerances are not required unless different to our standard of +0.1 / -0.05 mm. - Preferred with | OVERALL MECHANICAL DIMENSIONS | including notches, | PRINTED WIRING BOARDS PRODUCER | cutouts and slots. Also preferred is a positioning (datum) dimension (drilled hole is best). Tolerances are not required unless different to our standard of + | PRINTED WIRING BOARDS PRODUCER | / -0.25 mm. | OTHER INFORMATION REQUIRED FOR ALL BOARDS INCLUDES: | board thickness (standard = 1.6mm) base copper thickness (std = 18mm) solder mask | PRINTED WIRING BOARDS PRODUCER | colour (std = green) solder mask type (std = liquid photoimageable) component legend colour (std = white) bare board testing requirement (std for multilayer and | PRINTED WIRING BOARDS PRODUCER | fine line production runs) Extra ...
[ Printed Wiring Boards Producer ]


... removes the solvent from the liquid solder mask without starting the cross-linking action. Screened panels are manually loaded into the conveyorized oven as they | PRINTED WIRING BOARDS PRODUCER | come off the screen printer. The dried panels are automatically loaded on to an accumulator for cool down and availability to the imaging operation. Image | PRINTED WIRING BOARDS PRODUCER | LPI Mask Dried solder mask is imaged in a manner similar to that used for imaging the circuitry. Phototools containing black areas where the solder | PRINTED WIRING BOARDS PRODUCER | mask is to be removed are placed in direct contact with both sides of the panel. The panel is then exposed to UV light. The | PRINTED WIRING BOARDS PRODUCER | amount of light used is controlled by an integrator. Printing is done with a semi-automatic dual drawer printer. While one drawer is being loaded with | PRINTED WIRING BOARDS PRODUCER | a panel and phototools, the other is inside the machine being exposed. This dual drawer printing system runs at the same rate as the screen | PRINTED WIRING BOARDS PRODUCER | printer to insure continuous flow. Develop LPI Mask After the panel has been exposed, it is placed in a ...
[ Printed Wiring Boards Producer ]