Just be careful to only use sealed connectors - conformal coating (we
use type AR) likes to travel - it can wick up into an unsealed connector
and contaminate the mating surfaces. 

We had one board here we were spraying while hanging vertically - there
was an unsealed relay on the board and it traveled up into the relay and
gummed up the armature. 

This may be limited to acrylics - urethanes may not behave this way. We
only started having this problem when we changed from a urethane to an
acrylic coating.

Blair 

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
Sent: Tuesday, February 06, 2007 8:15 AM
To: [log in to unmask]
Subject: Re: [TN] Humiseal Masking Tape Residues/latex peelable

Mornin' Everyone!

I have Graham's "Das Boot" picture up! It's at:
http://stevezeva.homestead.com/files/Connector_Boot.JPG

Hey Graham, what is the part number of that boot? I could use that
here...

-Steve Gregory- 

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Graham Collins
Sent: Tuesday, February 06, 2007 6:27 AM
To: [log in to unmask]
Subject: Re: [TN] Humiseal Masking Tape Residues/latex peelable

Hi Kenny!
We use a different style compared to Steve's (for the most part, though
we do have a couple of applications like his).  I've sent Steve a pic to
post on his site.  The pic is from my trial before we started using
them.  In the picture there is a side view of a connector with a boot on
it, as well as a top view of a similar connector so you can see what the
boot masks.  It covers the pins, hardware, and the mating area.  The
boot in the pic was sprayed and then after it cured I flexed the boot
and picked the cured coating off - there are some flakes remaining but
nothing that would cause issues in repeated use.

We also use a similar boot on header pins - considerably faster than
masking them.

We purchased the ESD safe versions of these - a conductive rubber is
used.  The boot in the pic is not ESD safe - which is why it is living
in my desk.  

Kinnarney can also make custom designs for you, but at a price - so
ponder the cost carefully vs the labour offset.



regards,

Graham Collins
Process Engineer,
L-3 Communications Electronic Systems Inc.
Halifax
(902) 873-2000 ext 6215


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