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18 Threads found on edaboard.com: Pcb Masking
You can mask or unmask via's while you are generating gerber. For masking, you can get it done from your pcb vendor by supplying his soldermask film.
Allops, Does anyone have an idea how to protect the edge the pcb from ESD. Actually my design can conduct with the pcb at the edge of my pcb. i want to maintain my design, so need ya opinion how can i protect my pcb there any coating or masking material that can protect the pcb...PLZ...need (...)
Thank's Hai All Could some one tell me,What is the name RED or GREEN accrylic at the surface pcb? Huys
This might not be the right forum but I post this topic just because I was so proud of my achievement today. This might also be helpful to other and for some this might not be of interest. I'm no biginner but I usually use masking tape and sticker for my prototype. It was not new to me that some are using lazer printer for transferring patter
Hi Guys , Can anyone help me to remove the Silk Screen printing from the pcb's without damaging it since the fabricated pcb's what I got, there is sm misprint.
Sometimes this is due to the need to slightly improve thermal properties of pcb concerning radiation.
yes it is available in india. if you have pcb for small qty then better go for Photo imageable solder mask. it comes with hardener . mix needed quantity and apply using screen mesh. bake @70 C for 20 min, expose with positive soldermask pattern( the liquid is negative acting ) develop with sodium carbonate again bake @150 c for about 20 min. i
Drilling is done before silk screen so that isn't an issue. Some pcb manufacturers clip the silk screen around the solder mask so if you the vias are exposed the text will be clipped and so difficult to read so it is best avoided. Keith.
Remember that ESD don´t is affected to varnish used on pcb. Electromagnetic fields have different behaviour than galvanic fields. If there are traks and/or plain at both sides, I don´t see any reason to don´t cover that layer. We said only reasons to use the mask, but didn´t see advantages to don´t use. Unless if represents cost or time to
Green masking is not recomended for hobby pcb fabrication as it requires print-out of a solder mask layer to be applied to the pcb. Screen printing is usually used for the same. Regarding pcb raw materials sourcing in chennai, you may refer local yellow pages or take guidance from a commercial manufacturer. For preventing (...)
Work on the sample pcb projects that come along with pcb design software package. For a pcb designer value of components does not make any difference. Only the footprint does... :-)
How create green masking to the pcb? can anyone give me some information...
Another way to do this is to place a drill hole on the pcb and make it non plated (saves also masking off when wave soldered. Expand the solder mask on the top side, add a copper arc to it, add via holes around the arc at 90 or 45 deg intervals and use the via to connect internally to GND or to the bottom layer.
I have seen very few pcbs with masking via. If u do not mask the via,u can use via as a test pad.
I post this topic just because I was so proud of my achievement today. For some this might not be of interest. I'm no biginner but I usually use masking tape and sticker for my prototype. It was not new to me that some are using lazer printer for transferring patterns to pcb but I just discover which process is better. Transparent Fi
Dear Frnds, I am doing pcb Designing for last 2 years.Whevever we generated or verified gerbers in CAM350 we always saw that in solder mask layers solder mask should be only arnd the pads of components. Is this wrong that if for 0603 components instead of two square shapes for two pins we can give only one rectangular shape covering both the pi
Hello Ren, The silicone coating can be but on in any method. It will be important that you clean the board first to remove any contaminants. You can use alcohol (best to use 94% or higher but 91 will work OK if that is all you have) and a brush to do this. Before you coat, make sure the pcb is dry. If there are any areas that you need to mask,
i m using mosfet irfp460. its dimension in datasheet is TO247AD. i m using orcad 9.1, in this drill size is 1.8mm. after printed the pcb (non masking board),drill size in my pcb is below 1mm only. like this i give 3mm drill for my capacitor but in my pcb, it is 1mm only what can i do to increase drill size.how?