Electronics Forum | Tue Aug 24 12:20:33 EDT 2004 | davef
The methods Terry mentioned are good, but our operators are too impatient. Here's how they do site prep, after removing the BGA: * Use a soldering iron to melt the solder at the base of the ball. * Flick the ball[s] from the pad[s] with the solderin
Electronics Forum | Tue Aug 24 09:39:03 EDT 2004 | V
I feel your pain as well. Our purchasing group minimizes the amount of material in inventory so of course they bring in only what is absolutely needed. When they see 10,000 components in house they just don't understand that the part may be used on
Electronics Forum | Tue Aug 24 12:36:45 EDT 2004 | Cal
Hey Dave I deal with this every day. UGH!!!! We created a Bin location for each of our pick-and-place machines. Once the parts are moved from stock the computer will be updated as SMT 01xxx, SMT 02, and SMT 03 Bin location for that part. SMT01-03 are
Electronics Forum | Tue Aug 24 21:28:26 EDT 2004 | KEN
Here's one for ya' Purchasing buys SMT RJ45 connector parts on gray market in reels....reels that are 36 inch diameter! The pendilum swings the other way... Purchasing needs 10,000 resistors. They buy 20 (500 count) reels! I don't know about the
Electronics Forum | Thu Aug 26 12:28:57 EDT 2004 | rlackey
OK Greg, I'm sorry, I'll go & stand in the naughty corner. On a serious note, can elements of your machine database be outputted in a format that can be loaded (or backflushed)into an MRP, ERP or stock program (.TXT file or something)so that you can
Electronics Forum | Tue Aug 24 15:05:39 EDT 2004 | Dreamsniper
There is danger in doing this based on theory. Chances of the solder joints becoming cold or having poor wetting due to the fact that during the first run all the flux vehicles had evaporated and with the second run they're no longer present to help
Electronics Forum | Fri Aug 27 13:07:44 EDT 2004 | C Lampron
Hello, I believe that the area's of concern are primarily component related. Some component are rated for a temp (usually 260 degrees max) for some length of time. Tant Caps come to mind as being heat sensitive. The other concern would be the inerme
Electronics Forum | Wed Aug 25 22:55:59 EDT 2004 | pdeuel
We started placing 0402 with regular feeders and wasted every other part untill we got the correct feeders. The cost for most parts runs less than 1/20 th of a cent. Reels come in quanities of 10,000 instead of 5,000. You will also need the correct t
Electronics Forum | Thu Aug 26 13:51:57 EDT 2004 | Dreamsniper
I've done a few capacity and capability studies and bought new SMT equipment (Pick and Place) based on the above required capacity. I did not rely on equipment manufacturer's tact time. I used only 60% of their tact time as achievable in real manufac
Electronics Forum | Wed Sep 08 20:48:36 EDT 2004 | peter016
Hi Rob, I guess the ratio between chipmounter and GSM is very much depending on the chip to ICs ratio. This is product dependent. We use 2 HS50 to 2 GSMII, 5 S20 to 2 GSMII, 3 Sanyos to 2 GSMII, and 2 CP6 to 2 GSMII. Are these ideal ratios ? Lean Ma
