If your design violates this rule then we will have to clip any silkscreen that falls inside the 0.1mm periphery. Silkscreen includes each reference designator for your components, identifiers, company logos, switch settings, test points, part. What is a silk screen/silk screening On a printed circuit board the silkscreen is a process whereby a layer of ink is traced. The extra cost of including a silkscreen layer print is definitely worth the improvement. This is because a silkscreen helps in the assembly and testing stages, while simultaneously reducing troubleshooting time substantially. Silkscreen refers to a set of labels that are printed on the surface layers of a circuit board. According to Rush PCB USA, using a silkscreen print on a PCB helps to improve its quality and reliability substantially. To avoid problems during electrical testing, we prefer no overlay ink to fall within the range of 0.1mm from the respective solder mask pad. A unified PCB design package with the best CAD tools for PCB layout and silkscreen placement.
#Silkscreen pcb registration#
However, this method is limited to line widths not less than 0.007', or when the registration tolerance is at 0.005'. Detailed information Silk Screen Printing PCB The board lettering that we call the silkscreen originally derived its name from the process of using a stencil to apply ink to the finished raw PCB, in much the same way that lettering or a graphic design is applied to T-shirts. Reference designators should be close to their part and rotated to be easily readable. The next important step is arranging the different items on the silkscreen.
#Silkscreen pcb manual#
Manual Screen Printing This is the oldest of the three methods and happens to be the least expensive. Clearance: Silkscreen should be kept at a minimum of 0.005 inches from PCB pads and other objects. In order to print legible silkscreen, your PCB design should not contain a line width of less than 6 mil, or we will have to increase the line width at our end for efficient printing. The common PCB silkscreen printing methods are: Manual Screen Printing Liquid Photo Imaging (LPI) Direct Legend Printing (DLP) 1. We also offer silkscreen in black and yellow. Can I have a different colour than white for my component silkscreen print?.For large volume PCBs we use standard screen printing technology. Which legend printing technology do you use?įor prototype and small volume PCBs, we use PILP (Photo Imageable Legend Printing) technology, which is quite expensive but offers excellent quality and high accuracy.
While not essential, it is nice to have when you have hundreds of holes and need to figure out which component goes where.
It provides component labelling that makes manual assembly much easier. A good silkscreen can really make or break the final product. Silkscreen Marking Marking the Secondary Side - With or Without a Silkscreen Proper Marking of the PCB Silkscreen Marking.
#Silkscreen pcb series#
The aim is to apply a nomenclature to assist assembly. This is the fourteenth section in the back-to-school series for PCB Designers and those who may want to know more about it. Silkscreen is a process of screening ink using a stencil prepared by lithographic method.
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