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Black Solder Mask Circuit Board

Black Solder Mask Circuit Board

Black solder mask PCB 1.product describe Black solder mask circuit board Specification: layer:4 board thickness:2±0.2mm min hole:0.3mm line width/ space:0.152mm/0.175mm surface treatment: immersion gold These kinds of circuit boards are widely used in communication, network, digital products,...

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Black solder mask PCB
1.Product describe 

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Specification:
Layer: 4
Board Thickness:2.0 mm
Surface treatment:immersion gold.
Material: FR4 .
Min line width/line distance:6/6mil
Min hole:0.3mm 

These kinds of circuit boards are widely used in communication, network, digital products, industrial control, medical care, aeronautics & astronautics, defense & military fields, etc. Uniwell provides Green/blue/red/black/yellow/white solder mask for free .

2.Do you know what is solder mask?
Solder mask or solder stop mask or solder resist is a thin lacquer-like layer of polymer that is usually applied to the copper traces of a printed circuit board (PCB) for protection against oxidation and to prevent solder bridges from forming between closely spaced solder pads. A solder bridge is an unintended electrical connection between two conductors by means of a small blob of solder. PCBs use solder masks to prevent this from happening. Solder mask is not always used for hand soldered assemblies, but is essential for mass-produced boards that are soldered automatically using reflow or solder bath techniques. Once applied, openings must be made in the solder mask wherever components are soldered, which is accomplished using photolithography.Solder mask is traditionally green but is now available in many colors.

Solder mask comes in different media depending upon the demands of the application. The lowest-cost solder mask is epoxy liquid that is silkscreened through the pattern onto the PCB. Other types are the liquid photoimageable solder mask (LPSM or LPI) inks and dry film photoimageable solder mask (DFSM). LPSM can be silkscreened or sprayed on the PCB, exposed to the pattern and developed to provide openings in the pattern for parts to be soldered to the copper pads. DFSM is vacuum laminated on the PCB then exposed and developed. All three processes typically go through a thermal cure of some type after the pattern is defined although LPI solder masks are also available in Ultra Violet (UV) cure. 

In electronic design automation, the solder mask is treated as a layer of the printed circuit board, and is described as a Gerber file like any other layer, such as the copper and silkscreen layers.

3.Enquiry requirement
In order to get you an accurate quote quickly, following information must included in your project:
●,Complete GERBER files including the Excellon Drill File
●,Other file types (PCB123, Altium, Eagle,Protel, IVEX, Ultiboard (up to V12) and OrCAD (with .MAX file extension)  also accepted as well as hand layups / films etc
●,"Read Me" notes for additional fabrication information
●,Quantities
●,Turn time
●,Panelization Requirements
●,Materials Requirements
●,Finish requirements
Your custom quote will be delivered in just 2-24 hours, depending on the design complexity.

4.Shipping &delivery
Packaging:
Professional package. No worry about goods breakage. 

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Delivery
1)Confirming your shipping address is correct before delivery.
2)Service transit time is upon different carrier, may vary particular during holiday.

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