MOST ELECTRONICS offers its customers the design of the printed circuit board topology. Depending on the complexity and
requirements for the given project we select the appropriate software for the implementation of the client’s tasks, unless the client has specific preferences and requirements for it. When the customer provides a basic circuit diagram of the board, a list of elements (value, tolerance and housing of the passive elements, type and housing of the active elements) and external dimensions, he receives a finished product.
PCB design includes:

• preparation of files for automatic drilling
• cutting
• solder mask / color – green (standard), red, blue, black, white/
• white seal
• if necessary, files for making a stencil, automatic saturation,
• panelization of the finished project
• generate Gerber and Drill files.

Upon completion of the project, the client receives all the necessary files with complete technical documentation on the printed circuit board and
built a prototype of the product, if such is agreed upon the assignment of the project. The finished files and projects are the property of the client and we do not distribute them and provide them to third parties under any pretext.
For the production and delivery of bare printed circuit boards we use subcontractors approved by us, which offer an excellent ratio of quality, delivery times and price. All printed circuit boards are delivered with passed internal circuit electrical test.
Technological capabilities for bare printed circuit boards:

• Minimum bus – 200 μm
• Minimum distance– 180 μm for base material FR4 с 18 μm Cu
• Minimum metallized hole – 0.3 mm
• Минимална ширина на пистата -0,2mm /0,008 инча/
• Number of layers – up to 12 layers
• Material: FR4, FR2, Polyimide Flexible, CEM1, CEM3, AlCu, Rogers.
• Thickness from 0.2 to 3.2 mm depending on customer requirements
• For ready GERBER files a list of apertures is required / for GERBER-274X format it is contained in the file itself /, as well as a Drill file in EXCELLON, 2.4, leading zeroes format.
• It is desirable to have inscriptions on the top and bottom for orientation
• Copper coating thickness – 18 μm, 35 μm, 70 μm, 105 μm, 140 μm, 175 μm
• Finish – Lead Free HAL, Lead HAL, Chemical Ni / Au, Chemical Tin, Passivation (OSP)
• Protective mask – photo mask, epoxy mask, UV mask with different colors

Information required for processing inquiries in MOST ELECTRONICS LTD regarding the design and delivery of printed circuit boards:

• Complete Gerber files in mm or mils.
• Drill files in any format
• Number of circuit boards in series.
• Text file with full description of the printed circuit board – material and thickness, thickness of the copper coating, final coating, color of the protective mask, white seal, electrical test.