Stick with Coca-Cola. Things always go better with Coke.
Dewey
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Christopher Young
Sent: Thursday, January 13, 2011 9:15 AM
To: [log in to unmask]
Subject: Re: [TN] Trace Widths Entering SMT
Could someone tell me their experience they have with POP technology and
related problems regarding flux / placement / process / any other.
Thanks
Chris young
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Reuven Rokah
Sent: 13 January 2011 16:11
To: [log in to unmask]
Subject: Re: [TN] Trace Widths Entering SMT
Trace wisth entering SMT pads should not be bigger than 80% of the pad
width.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Pete
Sent: Thursday, January 13, 2011 5:24 PM
To: [log in to unmask]
Subject: Re: [TN] Trace Widths Entering SMT
I think you just took this topic a different direction.
IR boards most certainly do not heat evenly. But the original question
about a blanket rule about maximum .020" trace (or replacing a .050
w/ 3 .020 traces) didn't sound related to that problem.
Uneven copper distribution, parts sinking heat, large copper areas..
you can't ignore those. Trace sizes can effect balanced heating, but
they fall a little further down the list, and there's a lot more to it
than
simply spec'ing a maximum width.
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