Electronics Forum | Thu Jul 19 09:23:52 EDT 2007 | patrickbruneel
Chris, To my knowledge the only difference between leaded and lead-free components is the termination plating. What has changed in the component design that makes them resistant to higher temperatures?
Electronics Forum | Thu Jul 26 23:43:49 EDT 2007 | gioblast
check your stencil design on the ground pad. You might have a big aperture opening that pushing the component away from the paste. Look alos the way your pcb warp. Prioritize side that has component that need flat pcb as much as possible. hope this h
Electronics Forum | Wed Aug 01 19:24:50 EDT 2007 | swag
This board was designed in-house so I was able to get the engineering to move the trace in to a safe distance from the board edge. I think we're good to go.
Electronics Forum | Thu Aug 16 12:52:41 EDT 2007 | russ
DAVE, Does this '7351 supercede the IPC-SM-782?(surface mount design and land pattern standard) how about IPC-CM-770? (guidelines for printed board component mounting) those are the two that I have? Russ
Electronics Forum | Tue Aug 28 14:42:38 EDT 2007 | dphilbrick
You could shoot the engineer that designed them in without having a way to manufacture them. You could also try laser soldering or selective soldering.
Electronics Forum | Tue Sep 04 13:33:55 EDT 2007 | floydf
We "bar" solder them too. (It's really pulsed resistance welding). It's slow but reliable. They seem to be designed for this process. By the way, Luxeon just came out with new LEDs that have nearly the same luminous flux, but that can withstand leadf
Electronics Forum | Wed Sep 05 08:00:37 EDT 2007 | davef
We agree with Doug. Your board needs to be designed with the QFP at a 45* to the wave with scavanger pads in order to wave solder it. Otherwise if you wave solder it, you will need to hire an additional rework person.
Electronics Forum | Thu Sep 13 11:01:39 EDT 2007 | cyber_wolf
Fuji specs out Omega 66 grease for the solenoid sliders on older CP machines. These solenoids run hot. Its interesting to me that this grease is designed for extremely low temperature applications. Whats up with that ? http://www.omegaoil.co.jp/ind
Electronics Forum | Mon Oct 22 08:54:27 EDT 2007 | rgduval
Michael, You're right, of course. A major mis-type on my end. What I meant to say is that no-clean fluxes are designed to not _require_ cleaning to meet industry cleanliness standards. Cheers ..rob
Electronics Forum | Mon Oct 29 14:49:45 EDT 2007 | mulder0990
That is what I was hoping to hear. I found one of that sort of design and I am looking into it now. No beels or whistles, just a couple of heavy duty brackets, some calipers, and a microscope. 7K seems like a good price for me.
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