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Boards are manufactured double-sided with all holes plated-through. |
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Single-sided boards are manufactured with plated-through holes. |
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The quantity of boards made is 4. Other quantities are not available. |
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The board size must fit in a rectangle that is 21 square inches or smaller, and the longest dimension can not exceed 12 inches. |
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The minimum board dimension in height or width is 0.35 inches, however the total board area must be greater than 0.4 square-inches. (i.e. smallest square board we can make is 0.64 x 0.64 inches) |
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Our laminate is 0.062" FR-4 epoxy glass with 1/2 ounce copper.
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We plate an additional 3/4 ounce of copper (totaling 1 1/4 ounce), resulting in a copper thickness of ~0.0017". |
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The top and bottom solder mask layers are green LPI.
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Pads on the solder mask layers are grown by a minimum of 0.004" on all sides. As a result, very fine pitch surface mount components may not include any solder mask between the pins.
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A white silkscreen is printed on the top side of the board showing component outlines and text. These features are automatically masked to prevent the white printing from overlapping on top of pads (or anywhere there is no solder mask). |
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| The board finish is the industry standard SMOBC with pads having a tin/lead solder plating. Lead-free is not available with our ProtoPro service. |
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No copper (pads or traces) can be placed closer than 0.010" to the perimeter of the board. |
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Etching resolution is: 0.006" minimum trace width, 0.006" minimum space width.
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Board perimeters are cut to shape using a 0.093" router bit. Slots in the perimeter must be 0.100" or wider. Narrower slots will not be milled correctly. Routing slots or holes in the interior of the board are not offered. |
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The edges of the board are cut with an accuracy of +/- 0.015". A minimum of 0.020" blank space is recommended between the perimeter and all features on the board. Traces placed closer than 0.015" to the board's edge may be routed off. |
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Multiple circuits can be pasted together on a single board, but we do not cut them apart. The perimeter of a board cannot include long slots as they can cause manufacturing problems. We regret that we cannot be responsible for any defects that are a result of routing multiple circuits on a single board. |
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Twenty-three hole sizes are available: 0.014", 0.020", 0.025", 0.029", 0.033", 0.035", 0.040", 0.043", 0.046", 0.052", 0.061", 0.067", 0.079", 0.088", 0.093", 0.100", 0.110", 0.125", 0.141", 0.150", 0.167", 0.192", 0.251". These sizes are the finished hole diameters after plating. The 0.014" hole may be filled with solder and can only be used as via. The tolerance for the 0.020" hole is +0.003 / -0.005. The tolerance for the other hole sizes are +/- 0.004". Hole sizes other than those list are not offered. |
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A minimum of 0.021" space must remain between adjacent holes. For example, the center-to-center distance between two pads with 0.020" holes must be 0.041" or greater. |
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The maximum number of holes per board is 650. |
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Text placed on a board can be written in either copper layer or placed in ink on the top silkscreen layer. Component outlines will be printed on the silkscreen layer. |
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The dielectric constant of our FR-4 laminate ranges from 4.2 to 5.0. |
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The maximum operating temperature is 125 degrees C. |
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