Electronics Forum | Sat Nov 21 12:28:00 EST 2009 | flipit
There is evidence of lead being used in soldering 5000 years ago in Mesopotamia. Not a big issue for most people doing SMT but the poster should also understand why percent metal is adjusted for different solder paste alloys. You print by volume b
Electronics Forum | Mon Jan 11 09:15:36 EST 2010 | lynn_norman
In a former job we had issues with leakage currents on a QFP. The component was acting as a thermal shield leaving a lot of flux residue behind. To make it worse, the flux solvent wasn't totally evaporated, so we had ionic residue, a fluid media, a
Electronics Forum | Tue Mar 09 14:53:16 EST 2010 | davef
Resistivity Of Solvent Extract [ROSE] is a bulk ion contamination [BIC] test method. It should thought of as a process control tool used to assess ionic contaminants. Don't consider it an acceptable tool for establishing 'GO-NOGO' limits. The stan
Electronics Forum | Wed Mar 31 09:26:26 EDT 2010 | Bobpan
Hello, There should be a page in the manual that explains the proper way of manually teaching a program. It has been too long for me to recall the exact steps. Here is some stuff that should help you. Do a function 3 on a placement and this will show
Electronics Forum | Tue Apr 13 08:21:05 EDT 2010 | esca
Hi manchella, After ATC test, two different failure modes can be present: solder FATIGUE (into bulk) or BRITTLE INTERMETALLIC fracture. So, first you have to verify this. Moreover, which brand of SMT paste have you used ? The crack into solder joint
Electronics Forum | Wed Apr 21 17:34:48 EDT 2010 | stepheniii
Does it have to be one for both 1D and 2D? We scan barcodes we print with a 200 DPI printer which works out to 5 mil wide lines with no problem. 2D barcodes need a completely different kind of scanner. I know there are scanners that can do both but
Electronics Forum | Wed May 12 17:54:22 EDT 2010 | jlawson
Just a note, on fixed galden machines yes the way they compensate for rise time is as the previous post suggested, change power and also stage the lowering of the PCB into the vapor cushion ie not the main one but further up in the tank. The disadvan
Electronics Forum | Wed May 19 11:39:52 EDT 2010 | ccross
Over the last year we have seen a number of reworked and counterfeit parts coming in - particularly BGAs. This has been rather expected of some of our 'black market' sources but lately we have seen it from our larger, more respectable vendors as well
Electronics Forum | Fri May 28 01:47:05 EDT 2010 | jeffr
I have the part you need. The Yamaha Part number is K39-M7173-000. The same part is used on Philips machines using a different part number. This assembly is expensive because the motor is attached to a Harmonic Gearbox and encoder. I have a new unit
Electronics Forum | Wed Jun 30 12:45:59 EDT 2010 | rgduval
Dave hit the hottest issues. But, I would emphasize the cycle counting!! Your inventory will quickly lose control of scrap percentages. That is, you may set your system to, say, 5% scrap....but, your operator and/or machine may lose 10% on a parti
