Electronics Forum | Fri Oct 24 15:45:05 EDT 2003 | adlsmt
If your boards are 18"X18", what size magazines are you using? Most unloaders only handle 18"x18" magazines. If thats what you want I have Panasonic and Fuji unloaders for $2,000.00/ea I am an end user not a broker.
Electronics Forum | Fri Oct 24 13:41:39 EDT 2003 | albertoh
I need some information about coplanarity specs for QFP's. I try to setup coplanarity inspection on my QP242 but i'm not sure about what value i need on each parameter in order to setup my diferents parts data for this option. Thanks in advance.
Electronics Forum | Fri Oct 24 17:04:43 EDT 2003 | Joe
Any information on the difference in a thermal profile between lead free and regular Lead profile? Also, why use flux with Lead? Why not with Lead Free? Thanks, Joe
Electronics Forum | Tue Oct 28 09:24:10 EST 2003 | davef
Running a soldered BGA through a wave solder pot is very risky: * 230-240*C temperature of the pot could damage the device. * Solder in the pot will certainly cause bridging between BGA solder balls. * Solder in the pot could melt BGA solder balls.
Electronics Forum | Tue Oct 28 10:45:22 EST 2003 | Gabriele
After following the suggestions above, and where it would not be possible to mask BGA by soldering fixture, a Kapton tape (pre-punched) can be placed under BGA ( wave solder source side ) it can help to keep temperature low enough avoiding "seconda
Electronics Forum | Mon Oct 27 09:47:39 EST 2003 | yiannis
hi, Are there users of Aura - a wave soldering machine of Automation ?. I d like to buy a copy of the manuals and to ask a few questions. Thanks
Electronics Forum | Mon Oct 27 09:54:40 EST 2003 | John
We're just now beginning to see 0402's in our designs. Can anyone make recommendations on stencil/aperture designs and print parameters? I'm seeing skips on a small number of joints on these parts. Thanks in advance, John
Electronics Forum | Mon Oct 27 14:06:10 EST 2003 | russ
Search the archives, plug in 0402 OR aspect ratio and you will find everything you need to know about area and aspect ratio. These are the critical formulas for paste release. Russ
Electronics Forum | Tue Oct 28 20:50:19 EST 2003 | davef
Consider: * OnBoard Forum http://www.smtnet.com/forums/index.cfm?CFApp=2&forum_idx=46 * SMTnet Archive search
Electronics Forum | Wed Oct 29 13:08:45 EST 2003 | swagner
Does anyone have any Siemens placement process optimization for picking and placing 0402's, especially the resistors. Any response is greatly appreciated.
