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June 2005

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Subject:
RE: [TN] clarification of tab temp warning  vs. lead free temps on comp
From:
Hal Winslow <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Hal Winslow <[log in to unmask]>
Date:
Thu, 23 Jun 2005 14:55:17 -0400
Content-Type:
text/plain
Parts/Attachments:
text/plain (94 lines) 
If your customer is planning to assemble the boards with lead free solder, then yes, you should drape this project in red velvet.

If this just happens to be a RoHS compliant part, but your customer is going to be assembling the boards with Tin Lead solder and keeping their max temp below 220 deg C, then I guess they would be all set.

Sounds like the part vendor doesn't really understand what they are doing though.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Dharma Kemp-Bresett
Sent: Thursday, June 23, 2005 2:50 PM
To: [log in to unmask]
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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