Electronics Forum | Tue Mar 01 09:20:42 EST 2005 | rlackey
I remember Metro Nozzles mentioning that they are bringing out a new "blade" nozzle soon to allow closer density placement of 0402's & 0603's than the 08MPF allows. Also noticed that you get far better placement with a 1 mil camera than a 4 mil, coz
Electronics Forum | Fri Feb 25 15:08:30 EST 2005 | jdengler
John, We tape (usually high temp tape) flex to a fixture (usually 0.090" piece of bare FR4). We make an outline on the fixture to get a rough location then use fiducials on the flex for alignment. Print, place, reflow, cool, remove flex. When the
Electronics Forum | Tue Mar 01 10:55:07 EST 2005 | spot
A lot depends on the complexity of the board/process as well as the amount of placements. If the board has few placements and the parts are not smaller that 0805 then doing all the rework after completion is ok. The human eye can only pick out obvi
Electronics Forum | Sat Mar 05 22:57:32 EST 2005 | gpaelmo
This has been our practice and its worked well: SMT process-QC/Touch-Up-Assembly. We have dedicated QC/T-Up after reflow trained under IPC requirements. They do the SMT inspection and ONLY touch-up if necessary. This way we never have to inspect SMT
Electronics Forum | Sun Mar 06 11:04:19 EST 2005 | jsk
Slot three will not recognize magazine. LED's are lit (green)when inserted into slot three. Magazine works in all other slots. Tried multiple magazines. All gave the same error. Error code = E-MIPR-1 unknown magazine type slot 3 No visible damage t
Electronics Forum | Fri Mar 11 11:19:02 EST 2005 | Steve C.
I would change the Quad Align cable. If you have a spare head board swap that out as well. Make sure your Quad Align lenses are clean. If the camera is smudged then you can have some problems aligning parts as well. Let us know what you find. Cheers.
Electronics Forum | Tue Mar 22 12:04:31 EST 2005 | John S
Thanks for the advice. In this scenario we are designing our own product. Currently we are building at a prototype level with no appreciable wait between reflow passes. The part in question is a 64 pin QFP. We use a BTU VIP 98 with edge conveyor.
Electronics Forum | Thu Mar 17 13:03:21 EST 2005 | Slow Ride
When it comes to solder paste, you should worry about volume. Granted height is a part of the equation, but you could have perfect height and still get defects. I wouldn't get too wrapped up in volume either, unless you're evaluating stencil height
Electronics Forum | Wed Mar 30 16:52:41 EST 2005 | chunks
Someone sells the T-couples that are in a rigid tube and the base attaches to the edge of the bord. They have an adjustment nut on em you can adjust to spring load the T-couple on the are you need. They do produce a wavey profile from the part expa
Electronics Forum | Sat Mar 26 08:30:01 EST 2005 | davef
Consider this: * SolderQuick Winslow Automation-type [ http://www.winslowautomation.com ] preform * When LGA first came on the scene, we didn't have a clue. After trying sockets, we printed paste on the pads bug-up, reflowed, and then the placed the
