This marking indicates the design was fabricated and assembled by a UL-certified manufacturer according to the UL 796 and UL 94 standards. Another marking that you might see on designs that have been inspected for safety is the UL marking. RoHS, FCC, CE, and the E-waste disposal markings are typically found on consumer and commercial products that have passed relevant inspection. Regulatory markings are used to indicate that the design has passed inspection or conforms to specific regulations. The example below shows an example PCBA containing some of the information in the above list.
Other notes regarding assembly, testing, installation, or operation of the PCBAĪll of this information can get very cramped on a dense board we’ll look at some ways you can organize your silkscreen markings later in this article. Connector pinouts, especially for pin headers. #Silkscreen inks serial#
Manufacturer’s logo, serial number, and lot number. Polarity indicators for power/GND, or for polarity-dependent components (e.g., polarized capacitors and diodes). A reference designator for each component. Here is some of the information that should be included in your PCB silkscreen: Other important information will be used for traceability, indicating regulatory compliance, identifying the part number for your PCBA, and even simple things like indicating polarity. There are some instances where solder mask and silkscreen might be removed I’ve been asked to do this in some experimental RF boards, in which case we produce a detailed assembly drawing so there is no confusion as to where different components will go. If you need very small linewidths, your fabricator may use an alternative process called “direct legend printing” with a different type of ink.įor designers, there is some information that will be required for any design in order to put it through assembly. Silkscreen can be placed during fabrication using a UV liquid photo-imaging process, which is similar to that used for solder mask application. Every circuit board I have produced uses white silkscreen, but you may see circuit boards that have silkscreen in a different color. The graphics and text that appear in the silkscreen layer are usually printed with a permanent non-conductive epoxy ink. The silkscreen layer of your PCB is defined and printed during fabrication, and it will be used during assembly to verify component placement and footprints. What exactly does it all mean, and what specifically should you include in your silkscreen layer? All designs are different, but there are some common pieces of information that will appear in any silkscreen in order to aid assembly, testing, debug, and traceability. 
Please browse through our screen printing inks category, where you'll find various different colours and special effect inks.Every PCB has silkscreen on the surface layer, and you’ll see a range of alphanumeric codes, numbers, markings, and logos on PCB silkscreen.
We have it all covered! Whatever the type of ink you're looking for, Pyramid Screen Products can supply it! We also manufacture our very own Pyramid Ink range, which has a vast array of ready to use plastisol colours that are made right here in the Uk. From the world leaders in Plastisol ink technology, Rutland and Union Inks are abundant on our shelves and ready for your purchase, through to the Soil assosiation approved water based ink leader in Permaset. We stock an extensive range of screen printing inks to suit everyone's needs. We have a screen printing ink for every application in this section: textiles, garments, plastics, paper stock, PVC substrates and many other print mediums. Whether you're looking for a Plastisol or Water Based screen printing ink for printing on to textiles, garments or papers, you'll definitely find it in Pyramid's UK online shop.
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