Electronics Forum | Thu Jan 28 20:00:54 EST 1999 | Dave F
| Okay, | | Another question, if the soldermask in not cured, then it is washed will water ingress (from wash or ambient ) play havoc with capacitance or dielectric of PCB. I mean will my crystal and clock circuits start "Y2K'n" on me. OR will my P
Electronics Forum | Thu Jan 28 09:45:44 EST 1999 | parag
| | i am working with the noclean process and getting white residues on the bottomside of the board probably due to the | | wave soldering flux.i am using a no-clean solder paste and a noclean wave solder flux.The boards passed the accelerated tempe
Electronics Forum | Wed Jan 27 21:31:46 EST 1999 | Dave F
| How ESD will be effected by painting the legs of the work stations. Any names of suppliers? | Ali: Wayne is correct that many of the suppliers of work stations are beginning to supply their product with ESD paint on the supports. On one hand,
Electronics Forum | Mon Jan 25 21:14:08 EST 1999 | Dave F
| Greetings, | | We are discussing what should and what should not be baked and vacuum packed. Should we just concentrate on the fine pitch packages and the bga's? | What about those components which come on blister tape, should they get baked and r
Electronics Forum | Mon Jan 25 21:43:04 EST 1999 | Dave F
| hi, | i am working towards developing a no-clean process for a customer at contract manufacturing facility. the assemblies have gold fingers on them. these are masked to prevent from any damage to them during reflow soldering. the earlier proces
Electronics Forum | Tue Jan 26 19:43:02 EST 1999 | Ross Berntson
| hi, | i am working towards developing a no-clean process for a customer at contract manufacturing facility. the assemblies have gold fingers on them. these are masked to prevent from any damage to them during reflow soldering. the earlier proces
Electronics Forum | Tue Jan 26 19:43:26 EST 1999 | Ross Berntson
| hi, | i am working towards developing a no-clean process for a customer at contract manufacturing facility. the assemblies have gold fingers on them. these are masked to prevent from any damage to them during reflow soldering. the earlier proces
Electronics Forum | Sat Jan 23 09:36:35 EST 1999 | Parvez Patel
Hi Everyone, We plan to build, for reliability/experimental/research purpose some CSPs (namely Tessera microBGA 46-I/O 0/75mm pitch and TI 64 I/O 0/8 mm pitch). the various factors that we plan to evaluate are the reliability and assembly concerns fo
Electronics Forum | Sat Jan 23 15:19:45 EST 1999 | Earl Moon
| Could anyone send me equations to calculate controlled impedance of traces on circuit boards. I am most interested in the buried traces in multi layer boards. | | Thanks, | David - piengr@verinet.com | As one of the first MLB impedance folks on
Electronics Forum | Fri Jan 22 17:03:55 EST 1999 | Ross Berntson
| I'm currently planning to do an evaluation of RMA flux solder pastes for mil type applications. Does anyone have any suggestions for vendors to try? I'm especailly interested in pastes that aid application on boards with 20 mil pitch. | I am fro
