Green PCB's

[Richard Harris]

How do manufactured PCB's get there green colour and what purpose does it
surve.

Thanks.

 

[Gareth]

Richard Harris wrote:

How do manufactured PCB's get there green colour and what purpose does it
surve.

Thanks.


The green coating is called solder resist. As the name suggests, solder

does not stick to it. This reduces the chances of solder going where
you don't want it and therefore makes soldering much easier.

BTW it doesn't have to be green though it often is.

Gareth.

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[John Larkin]

On Sat, 15 Jan 2005 10:02:17 +0000, Gareth <me@privacy.net> wrote:

Richard Harris wrote:
How do manufactured PCB's get there green colour and what purpose does it
surve.

Thanks.


The green coating is called solder resist.

Solder mask. The resist is used earlier in the process, and is removed
along the way.

As the name suggests, solder
does not stick to it. This reduces the chances of solder going where
you don't want it and therefore makes soldering much easier.

BTW it doesn't have to be green though it often is.

Our boards are blue. We have one customer who decided to screen all
their "static sensitive" boards red. QC then decided that all boards
are static sensitive, so now they're all red.

John

 

[Tom Biasi]

Richard Harris wrote:

How do manufactured PCB's get there green colour and what purpose does it
surve.

Thanks.


Hi Richard,

The others are correct but just a note: Some fiberglass boards are green
from the start.
Regards,
Tom