DIP parts Market status for ATMEL ATmega MCU's

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clawson wrote:
As Lee says there were likely other arguments besides the copper usage that played into that equation too.

Only from personal experience with consumer produces with "cheap" single-sided boards:  they almost always seem to be brown.  And they don't seem to be as stiff as the [often green] fibreglass material of "real" boards.  Is that material really a paper/cardboard ?

You can put lipstick on a pig, but it is still a pig.

I've never met a pig I didn't like, as long as you have some salt and pepper.

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theusch wrote:
Is that material really a paper/cardboard ?

Yes. 

The substrate most commonly used in printed circuit boards is a glass fiber reinforced (fiberglass) epoxy resin with a copper foil bonded on to one or both sides. PCBs made from paper reinforced phenolic resin with a bonded copper foil are less expensive and are often used in household electrical devices.

How printed circuit board is made - material, manufacture, making ...

 

www.madehow.com/Volume-2/Printed-Circuit-Board.html

 NB:  [we share a building with a circuit-board maker]  Thinking about it, in the end it isn't just the copper for the few traces on the second side -- isn't the copper foil covering the entire board area?  And then when etched away, it needs to be processed and reclaimed.

You can put lipstick on a pig, but it is still a pig.

I've never met a pig I didn't like, as long as you have some salt and pepper.

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clawson wrote:
So this would have been analysed at length and the decision made to use the single sided board because the overall BOM cost would have been lower. We didn't just guess at these things. As Lee says there were likely other arguments besides the copper usage that played into that equation too.

You (and I) did not quantify the cost of western academics and engineers to do those analyses.

 

I personally still feel ashamed of spending some 100 hours to find the optimum for a plastic part of a few cents. We found the optimum, but without taking these pre engineering labour costs into account. Must have happened with you too sometimes (I guess)...

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