Electronics Forum | Thu Aug 12 18:43:49 EDT 1999 | Wayne S.
Hello Having a problem with bridging on 20mil pitch qfp, only on the lead groups where squeegee goes over width of apertures. Using MPM sp-200 semi-auto, chem-etch stencil, 9-10mil width opening 100 durometer blade. Getting "tails" on deposits. Trie
Electronics Forum | Thu Aug 12 20:17:12 EDT 1999 | Kelly Morris
| Hello | | Having a problem with bridging on 20mil pitch qfp, only on the lead groups where squeegee goes over width of apertures. Using MPM sp-200 semi-auto, chem-etch stencil, 9-10mil width opening | 100 durometer blade. Getting "tails" on deposi
Electronics Forum | Thu Aug 12 00:17:15 EDT 1999 | DLKearns
Wanted to know if there was a good "to go by" tip other than the customers(if it helps current req.,10% of 30% of trace) requirements, about pits in the traces on copper plated ceramic substrates? More to the point how many is too many regardless of
Electronics Forum | Mon Aug 09 10:27:14 EDT 1999 | Tim Murphy
Just curious what effect pinholes and solder voids can have on solder joints that have high current passing thru them. Also could moisture from steam sterilization (autoclaving) get inside a said solder joint and then outgas during high current, and/
Electronics Forum | Wed Aug 04 16:37:56 EDT 1999 | Doug
| Hello Netters, | | Can anyone provide me with info or where to get info on acceptability of solder beads and solder balls? | | Thanks for any help | | Tom B. | | Tom, The IPC sets the standards for acceptability. But in a nutshell if the ball i
Electronics Forum | Thu Aug 05 10:12:18 EDT 1999 | John Thorup
| Hello Netters, | | Can anyone provide me with info or where to get info on acceptability of solder beads and solder balls? | | Thanks for any help | | Tom B. | Hi Tom Wolfgang is right. We think you should correct your process to reduce ball f
Electronics Forum | Thu Jul 22 14:44:30 EDT 1999 | Scott McKee
| I am looking for some recommendations for a cleaner for rosin flux. | | James | Popular is an Organic Saponifier Cleaner from Alphametals, the name is 2110. Requires a 5%-7% mix ratio with DI water. IPA is also used but is getting on the "no n
Electronics Forum | Wed Jul 21 19:16:53 EDT 1999 | Dreamsniper
Which among the two profiling method is more reliable/accurate in getting the oven thermal profile? a) using a HIGH-TEMP solder wire then soldering the thermocouples onto the profile points of the board (e.g. component lead etc.) b) not soldering t
Electronics Forum | Wed Jul 21 13:05:17 EDT 1999 | John
Looking for a cross-referencing and part identification guide for surface-mount components. There is very little infomation provided on some of the components themselves, and we often don't have parts lists or schematics for items we repair, so ident
Electronics Forum | Mon Jul 26 03:32:31 EDT 1999 | Jason
| | | Hello, | | | i'm looking for informations about companies which are using system to verify the loadind of a SMT machine by using barcode (on the slot on the machine & on the reel). | | | I'm in charge of the installation of this kind of system
