What is it? This is a set of seven small (2.2 cm x 2.2 cm / 0.9 in x 0.9 in) circuit boards, in seven different colors and six different thicknesses. The circuit boards also have some useful exampl...Read More…
This is a set of seven small (2.2 cm x 2.2 cm / 0.9 in x 0.9 in) circuit boards, in seven different colors and six different thicknesses. The circuit boards also have some useful examples off common PCB design situations on the reverse side.
The front of each sample has a short description of the board and a small example circuit. On the side is row of 6 plated holes ranging from 0.4 mm to 1.0 mm in diameter.
The back of each board is different:
The white board is 0.6 mm thick, has a HASL finish and the back of the board contains examples of different silkscreen line widths.
The yellow board is 0.8 mm thick with a HASL finish and examples of different silkscreen font sizes on the back. The ratio between the font height and the line strength is 8%.
The blue board is 1.0 mm thick with a HASL finish and the back side is similar to the yellow board except for a ratio of 15% between font height and line strength.
The green board is 1.2 mm thick with a HASL finish and the back contains different examples of silkscreen text.
The purple board is 1.6 mm thick with an ENIG finish. The reverse side has examples of different lead pitches and two BGA grids with 1.0 mm pitch and 0.5 mm pitch.
The red board is also 1.6 mm thick, with a HASL finish. The back contains footprints for different common SMD diode packages.
The black board is 2.0 mm thick with an ENIG finish. On the reverse side are the most common sizes for surface mount resistors, capacitors and inductors. One the left side are suitable landing patters, while the silkscreen on the right shows the actual component size.
Since most of the boards are separated out of a larger panel, two of the sides can be a bit uneven or show toolmarks (see images). Please do not expect these boards to be exactly 22.5 mm wide and long.
Due to the production method some of the boards can also contain an additional panel number. This number will not obscure any other information on the board, and at most two out of the seven boards in each order will have one.
You can get a slightly more detailed description and all the design files on my homepage.
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Joseph | Jan. 12, 2014
Anton | Oct. 8, 2013
Nial | Sept. 28, 2013
Richard | Sept. 2, 2013
David | Aug. 31, 2013
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