Ronja 10M Transmitter solderpad
ronja-10m-transmitter / Gerber / README
Printed circuit board manufacture request
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Name Ronja 10M Metropolis Transmitter version 20050111
Constr. class 4
Shape Rectangle with 3 notches. Shape is defined by
center of line drawn in
metropolis_transmitter.fab.gbr
Rounding of inner corners due to tool diameter
is permissible.
Layer file format Gerber RS 274X
Drill data format Excellon
Drill data meaning Final diameter of the hole
Rounding hole Round toward bigger diameter
diameters
Layers Two-layer through-plated, 2x soldermask, 1x silkscreen
Material FR4
Material thickness 1.5mm
Copper thickness 35um minimum final copper thickness
Chirality All layers are as if viewed from the component side
(possibly through the board).
Copper polarity Positive. Dark places in file mean copper.
Soldermask polarity Negative. Clear spaces in file mean mask matter.
Silkscreen polarity Positive. Dark places in file mean paint.
Through-plating All holes are through-plated
Gold-plating None
Surface treatment Hot Air Levelling
Edge treatment Milling
Testing Optical from 3 pieces up
Note: Gerber RS274X format means "Gerber RS-274X Format", defined in the year
1998 by company Barco Graphics N.V., Gent, Belgium (Barco ETS, Tramstraat 69,
B-9052 Gent, etsinfo@barco.com), see
http://nexp.cs.pdx.edu/twiki-gerber/pub/Gerber/GerberFiles/rs274xrevd_e.pdf
File meaning
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metropolis_transmitter.group0.gbr solder side - copper
metropolis_transmitter.backmask.gbr solder side - soldermask
metropolis_transmitter.fab.gbr outline and drilling
checkplan. Outline of
the board is center of
the line in this layer.
metropolis_transmitter.group1.gbr component side - copper
metropolis_transmitter.frontmask.gbr component side - soldermask
metropolis_transmitter.frontsilk.gbr component side - silkscreen
metropolis_transmitter.plated-drill.cnc drill data - throughplated
holes
Preview - metropolis_transmitter.ps
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The preview is in the PostScript format and has only informal meaning to check
that the data have been interpreted correctly. It's not intended for exposure
on film. Front means component and back solder side.