PCB circuit board is a must for all kinds of electronic products, there are many different colours of PCB, these different colours of pcb are actually printed with different colours of solder resist ink. For example, the current market is more common green, black, red, blue, white and so on, many people will be curious, why pcb has so many different colours? Is there any difference between them? On this topic, I would like to share with you today.
Why is there a variety of PCB board colours?
PCB board colour showing diversity, not because the printing of which colour pcb will look more high-end some (different colours of pcb in some areas will be a bit advantageous), mainly to make different colours of pcb, applied in some product areas better differentiation, so not the colour defines the pcb, but the product pcb defines the different colours.
Why is green pcb the most common and what are the reasons?
Green pcb is most common because it has several advantages.
1. Cheap and cost effective
Green ink resist has the longest history of use and the cheapest raw materials, so the cost will be cheaper
2. AOI inspection machine is more friendly
pcb to go through SMD, reflow soldering, subsequent AOI inspection is the use of optical detection, green on the optical recognition of better results
3. Manual visual inspection is more friendly
Manual visual inspection, green for better protection of the human eye
Environmental protection and low cost
Green anti-soldering ink will not division van toxic gas, in the waste pcb high temperature dissolution, more environmentally friendly
White PCB, black PCB, red PCB are generally used in which areas, what are the advantages and disadvantages?
1. White PCB is mostly used in the field of led, because white can reflect, add brightness and reduce heat absorption.
2. Black PCB is mainly used in high-end point field products, highlighting its high-end, black pcb can produce low contrast, can easily mark the component bit number. Black pcb should not be used in various high temperature applications as black pcb may discolour screen printing. Black PCBs are a mixture of cobalt and carbon and may be less conductive, so there is a risk of short circuits and subsequent quality problems, which can be more costly to repair, so the use of black PCB must be of good process quality.
3. The red PCB has very good visibility and clearly defines the contrast of traces, planes and blank areas. The silkscreen looks very good against the red PCB.
Zhejiang NeoDen Technology Co., LTD., founded in 2010, is a professional manufacturer specialized in SMT pick and place machine, reflow oven, stencil printing machine, SMT production line and other SMT Products. We have our own R & D team and own factory, taking advantage of our own rich experienced R&D, well trained production, won great reputation from the world wide customers.
NeoDen supplies life-long technical support and service for all of the NeoDen machines, moreover,regular software updates based on the using experiences and actual daily request from the endusers.
Zhejiang NeoDen Technology Co., LTD.,