Hi Darma

Make sure that you get the qual data from your component manufactures and
make sure what MSL rating that they state that they are qualified for that
they really are.  With lead free you will see component peak temperatures
during the solder reflow process around 240 - 250 deg C and you want to
make sure that the components are not poping.

In regards to equipment as long as you have a 7 zone heated furnace you
will be al right with your equipment.  Just be aware cycle times are going
to go down.


Karen Walters Ebner
Raytheon Electronic Combat Systems
Towson, MD 21286
410.583.4082



Dharma Kemp-Bresett <[log in to unmask]>
Sent by: TechNet <[log in to unmask]>
06/23/2005 02:49 PM
Please respond to
TechNet E-Mail Forum <[log in to unmask]>; Please respond to
Dharma Kemp-Bresett <[log in to unmask]>


To
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cc

Subject
[TN]         RE: [TN]         RE: [TN]         Re: [TN] clarification of
tab temp warning  vs. lead free temps on comp






You are correct. Does this mean that there will have be "special
treatment"
for this board, if this part is used? I guess I am basically asking if
this
is a red flag I should be waving at my customer.....
Dharma

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Crepeau, Phil (Space
Technology)
Sent: Thursday, June 23, 2005 2:45 PM
To: [log in to unmask]
Subject: [TN] RE: [TN] Re: [TN] clarification of tab temp warning  vs.
lead
free temps on comp


that may be true, but i believe the concern is that lead free requires
higher soldering temperatures.  so what to do?  maybe that's the question
and concern.

phil

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Werner Engelmaier
Sent: Thursday, June 23, 2005 11:40 AM
To: [log in to unmask]
Subject: [TN] Re: [TN] clarification of tab temp warning  vs. lead free
temps on comp


Dharma, my dear,
hand soldering is the worst possible way to solder when trying to keep the
temperature down.



Werner

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