Imagineering, Inc. | https://www.pcbnet.com/blog/what-is-the-pcb-fabrication-process/
. Laser direct imaging exposes certain parts of the board to light in the shape of the PCB pattern. Any unexposed parts of the board will develop off, leaving the remaining film as an etch barrier The remaining film serves as an etch barrier that will be removed from the exposed copper to form the copper circuitry
Imagineering, Inc. | https://www.pcbnet.com/blog/how-pcbs-are-made/
: Areas of exposed copper on the PCB. They provide a stable and conductive surface for solder joints. PCB Design Phase PCBs are usually designed by companies that create electronic devices and assembled by dedicated PCB manufacturers like Imagineering
| http://etasmt.com/cc?ID=te_news_industry,26961&url=_print
. Phenolic resin is resistant to weak acids and weak bases. It will decompose when exposed to strong acids and will corrode when exposed to strong bases
| https://www.eptac.com/soldertips/solder-pot-maintenance-and-dross-removal/
. The amount of dross generated in a wave solder system can be enormous due to the turbulence of the wave from wave generation and from the amount of surface area of the exposed molted metal within the system
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/RSS_pcb-design-in-the-1970s_topic2333.xml
;The pad master was over-exposed to create the solder mask swell. The PCB’swhere created using the negatives to apply a temporary mask that protects partsof the copper laminate from acid and leaves the desired pattern
| https://www.eptac.com/soldertip/solder-pot-maintenance-and-dross-removal/
: Component Mounting and Acceptability Question: We found an article online about solder pot maintenance and the removal of dross, specifically there is an interest to us in the “changing bar solder” Section
| https://www.eptac.com/faqs/soldertips/soldertip/solder-pot-maintenance-and-dross-removal
. The amount of dross generated in a wave solder system can be enormous due to the turbulence of the wave from wave generation and from the amount of surface area of the exposed molted metal within the system
Imagineering, Inc. | https://www.pcbnet.com/blog/when-to-use-fr4-printed-circuit-boards/
180ºC. In PCB manufacturing a thin layer of FR4 is typically laminated with copper foil layers. What are the Types of FR4? There are many variations of FR4 used in PCBs
ORION Industries | http://orionindustries.com/pdfs/X300-series.pdf
: White Insulating Layer Finish: Matte or Polish Standard Roll Widths: up to 48” wide Standard Gauges (insulating layer): 0.005”, 0.010”, 0.015”, 0.020”, 0.030” Available Foils: Aluminum, Copper, Tin Plated Copper
