Electronics Forum | Wed Jun 08 01:45:53 EDT 2011 | aoiguy
Update: I was able to import the csv pick & place data that was given, issue is that the data fails to over write the insert cords that have already been given with the cad data. Can not load the csv data without the first (cad) file loaded, so there
Electronics Forum | Wed Jun 08 23:03:47 EDT 2011 | grics
Can you massage the data manually? Extract the centroid data (file) from your P&P and either in notepad or excel perform the scrub then repaste to match the proper lines/columns in the csv file? Aside from gerber translation for new XY or identifyi
Electronics Forum | Thu Jun 16 17:02:40 EDT 2011 | boardhouse
The finish looks like Immersion Tin or Silver. if its lead free Hot air - could be issue of to high of a Tin Content. find out what brand of Hasl they are using. SL100 Example. Is this tarnished look only being seen after assembly or have you seen
Electronics Forum | Fri Jun 10 13:04:04 EDT 2011 | spitkis2
Any suggestions as to what can cause a PBGA's corner to warp down during installation process on a rework system? A couple solder balls bridge at the corner. It appears at the pin 1 corner where the metal indicator of a BGA is exposed. I am wonder
Electronics Forum | Mon Jun 13 09:43:11 EDT 2011 | mosborne1
Delamination almost always is caused by moisture in the PCB. You can try to keep some of the PCBs in a dry box after recieving them. You can also slowly heat them up to bake out moisture. If you are purchasing boards form overseas form a board house
Electronics Forum | Thu Jun 16 16:50:37 EDT 2011 | boardhouse
Hi Milroy, One thing to check is the FR4 Laminate being used - if this is a RoHs build is the correct FR4 being used by your manufacture. What layer count of board are you seeing the delamination on? Does you board shop Vacuum seal the packages wi
Electronics Forum | Wed Jun 22 02:30:33 EDT 2011 | boardhouse
if its a RoHs Assembly they should be using an FR4 material designed with higher TD to handle higher Assembly temps. 370HR,IT158, IT180, 4000-29 just to name a few that would be suitable. Standard FR4 material is not designed to handle the higher as
Electronics Forum | Tue Jun 14 17:32:44 EDT 2011 | davef
It depends on the flux and the down-stream processing ... * If there is adequate down-stream cleaning: We are ambivalent. * If the flux is low residue and there in no down-stream cleaning: We don't like using a syringe because it squirts liquid flux
Electronics Forum | Wed Jun 15 07:47:28 EDT 2011 | edmaya33
Any input on this machine good or bad would be > help ful, thanks This is a Good machine. 5K AOI Perform machine is easy to program and had a built in inline defect viewer. Low false failure/call compare to other platform. Able to detect skew, bri
Electronics Forum | Thu Jul 07 14:58:18 EDT 2011 | vickt
Prasad, It is typical when experimenting with new materials to have to adjust the airpressure on the syringe and the stroke of the PDP piston (screw adjust on top of the PDP pump). You can add mutiple cycles in the comp Db to make larger dots with th
