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Matte Black Solder Mask Circuit Board

Matte Black Solder Mask Circuit Board

Matte black solder mask circuit board 1.company information Uniwell Circuits Co., Ltd, was established in Shenzhen, China in April, 2007. Uniwell Circuits is a high-tech company special for design, development, manufacture and sales of high precision double-sided & multilayer PCBs (Printed...

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1.Product describe

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Specification:
Layer: 4  
Board Thickness:1.6 mm
Surface treatment:immersion gold.
Material: FR4 TG170.
Min line width/line distance:4/4mil
Min hole:0.2mm
Special requirement:impedance control

Uniwell can also make it matte black if you want it.
These kinds of circuit boards are widely applied in communication, network, digital products, industrial control, medical care, aeronautics & astronautics, defense & military fields, as well. Uniwell provides Green/blue/red/black/yellow/white solder mask for free .

2.Company information
Uniwell Circuits Co., Ltd, was established in Shenzhen, China in April, 2007. Uniwell Circuits is a high-tech company special for design, development, manufacture and sales of high precision double-sided & multilayer PCBs (Printed Circuit Board) focusing on quick turn, prototype, medium and large volumes.  With brand new equipment and total production area over 10,000 sq. meters, Uniwell Circuits is capable of producing 100,000 square feet of 2-32 layer PCBs and delivering over 5000 varieties monthly. 

We offer quick turns service to meet 24-hour delivery for double-sided PCBs, 48-hour for 4 to 8 layers and 120-hour for 10 layer or higher PCBs. In order to meet the growing market demands, we have built a new factory in October, 2010, which named Jiangmen Factory, located in Jianghai District Jiangmen city, especially designed for small to medium mass production volumes. Combination with Jiangmen and Shenzhen facilities have proved to meet all our customer’s all requirements from prototype to mass production.                 

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3.What is solder mask?
Solder Mask is a protective coating applied to the bare printed circuit board. Bare boards are covered with mask to prevent accidental solder bridging during assembly and to help protect the board from the environment. (Don't confuse solder mask with conformal coating. Conformal coating is also a protective coating but it's applied to the assembled board rather than the unpopulated bare board.). Solder mask is usually green but many other colors are available. The most common colors we use are:
Green
Matte Green
Red
Blue
Yellow
White
Black
Matte Black 

Solder mask is very important when it comes to assembling your PCB. As any assembler will tell you, if it's possible, always put solder mask dams between your surface mount pads. This helps prevent accidental solder bridging during assembly and greatly reduces the amount of rework required to remove shorts. Be aware there are limitations with regards to minimum pad to pad spacing so not all SMD (Surface Mount Device) pads will be able to have mask dams between them. Here are our minimum mask dam guidelines.

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