We are using White Tine on one of our boards and it is working out just fine for
us it's a 4 layer MC-5 (GIL) construction. The reason for us using this finish
is that we did not want to subject the PCB to the extreme temperature of the
HASL environment. Some of the benefits are a flatter PCB at incoming inspection
flatter pads due to the unevenness of the HASL finish. We did go through some
growing pains since we were told it was a drop in finish for HASL and found out
that we needed to tweak considerably the profiles and the fluxes. To date we
have seen no drawbacks and we have around 11000 boards in the field. We ran
DOE's on both the Omikron & Dexcoat versions with no differences found in our
assemblies.
Hope this helps.
Steve
---------------------- Forwarded by Steve Collins/Antec on 02/28/2000 10:35 AM
---------------------------
Russell S Gregory <[log in to unmask]> on 02/25/2000 12:12:24 PM
Please respond to "TechNet E-Mail Forum." <[log in to unmask]>; Please respond to
[log in to unmask]
To: [log in to unmask]
cc: (bcc: Steve Collins/Antec)
Subject: [TN] Immersion Tin
Dear All,
I am interested in the benefits of Immersion Tin as a final finish.
Do any of u use Immersion Tin as a final finish?
Why do u use it and what did u change from?
What are the benefits for you of an Immersion Tin?
What are the drawbacks?
Does an Immersion Tin have to pass a specific test for approval?
Do all Immersion Tins give u the same benefits?
Russ Gregory
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