Customizing PCB Specifications

Last Updated: April 4, 2019
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After your PCB design files have been uploaded you can adjust your PCB Specifications under the Design Tab in the PCB interface. Click the “SHOW SPECIFICATIONS CONTROLS” text on the right side of the screen to open the menu.

Specification Controls


The following PCB specifications can be adjusted in the PCB platform. Information regarding what PCB specifications MacroFab offers can be found in the PCB Specifications and DRC article.

Layer Count

Change how many copper layers your PCB assembly has. For more information about layer stack up information check the PCB Layer Stack Ups article.

PCB Thickness

Selecting this option allows you to specify the thickness of your PCB, in 0.01mm increments, from 0.2mm to 6.3mm.  Note that each layer count has a minimum thickness, and 0.2mm will only be supported on 2-layer PCBs. Further information about minimum thicknesses and tolerances can be found in the PCB Layer Stack Ups article.

Customizing the PCB thickness incurs a minimum PCB charge, and increasing the thickness beyond the standard thickness for the current layer count will incur a one-time charge for additional materials.

More information on how custom PCB thicknesses work can be found on our blog article, PCB Options: Custom PCB Thickness.

Soldermask Color

You can select from any of the following soldermask colors:

  • Red
  • Green
  • Light Green
  • Matte Green
  • Blue
  • Yellow
  • Black
  • Matte Black
  • White
  • Dark Brown
  • Transparent

Silkscreen Color

You can select from any of the following silkscreen colors:

  • Red
  • Green
  • Blue
  • Yellow
  • Black
  • White

Copper Weight

You can select from 1oz or 2oz outer copper weight for your board. Changing to 2oz copper weight incurs a minimum PCB charge and disables extended manufacturing specifications, as we cannot produce 3mil traces with 2oz copper. See the PCB Specifications and DRC article for the differences in specifications between 1oz and 2oz copper weight.

Manufacturing Type

The following manufacturing type options are available:

  • Standard
    Use standard manufacturing specifications, with a minimum trace width of 5mil, minimum part size of 0402, and minimum drill of 12mil. There is no additional charge for choosing this option.
  • Extended
    Decrease minimum trace sizes, annular rings, and edge clearance to 3mil and set a minimum part size of 0201. There is a one-time charge per order for selecting this option, which will be the same no matter how many boards you order.
  • Extended Drill
    Decrease minimum drill size to 4mil. There is a one-time charge per order for selecting this option, which will be the same no matter how many boards you order.
  • Extended/Extended Drill
    Combination of decreased minimum trace sizes, annular ring, and edge clearance with a decrease in minimum drill size to 4mil.

Impedance Control

Selecting this option enables impedance control for your order. You must provide additional information about your PCB when this option is selected. For more information about what is required see the article about Required Design Files.

Selecting impedance control on will add a one-time charge per order, which will be the same no matter how many boards you order.

Prototype Class Verse Production Class


Our Prototype Class Service PCB specifications is more limited then the Production class. For Prototype Class service multiple orders are batched into a single panel and you pay only a share of the setup fees and materials cost relative to how much PCB board space you’re using. For this reason, Prototype Class service is limited to 2 to 4 layers at this time and you can not specify a specific silkscreen color or soldermask color, and instead will get red soldermask with white silkscreen.

If you need a specific combination or soldermask and silkscreen colors, heavier copper weight, or impedance control, your design can only be manufactured with the Production Class Service and will incur a minimum PCB cost. This cost is equivalent to 25 square inches (635mm²), which is the minimum size PCB panel we can order and process. If you can fit more PCBs within this minimum charge area, a warning icon will appear next to the Parts and Materials price display and mousing over it will inform you how many more PCBs you can order for the same total panel cost.

To compare the what options are available to the Prototype Class Service and Production Class Service see the Quick Turn, Prototype, or Production Class Service article.

Additional PCB Specifications


If you need more features for your PCB don’t worry! The above specifications are for instant real time quotes. Other features like hard gold and beveled edges are possible. Contact our support team and we can get you a custom quote for your PCB quickly.