[Arm-netbook] libre laptop power board, needs 2oz copper, any recommendations?

Luke Kenneth Casson Leighton lkcl at lkcl.net
Thu Sep 3 02:12:20 BST 2015


ok, i checked with the eurocircuits online system, they can't handle
the power board.

the LTC4155 is handling 4 amps, so the app note says that 2oz copper
is needed.  however, eurocircuits require a minimum track-to-track
clearance of 10mil which is totally incompatible with the distance
even between pads of the LTC4155 IC!

therefore we conclude, simply, that eurocircuits doesn't have good
enough equipment, therefore it is necessary to find an alternative PCB
prototyping company.

i've managed to get the track-to-track distance to 7mil, smallest via
is 10mil with a 24mil ring, track width is a minimum of 8mil, and the
size of the PCB is tiny: 3.4in x 1.2in.  it's only two layer,
components only on one side, but the copper needs to be 2oz.

can anyone help with PCB manufacturing at all?

tia,

l.



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