Electronics Forum | Mon Nov 12 17:12:40 EST 2001 | slthomas
Thanks, Dave. Three courtesy cheers for specifications written to reflect the capabilities of the part suppliers, even if they fail to meet the purchaser's (not unreasonable) process req'ts. In the meantime, I'm sure my stencil guy would be more
Electronics Forum | Tue Nov 13 20:03:25 EST 2001 | davef
It is better than the divider try thing, especially if the divider try thing is not ESD protected. The repair person must req these parts or we end-up short on the build!!! Pissa!!! Howbout this? * Some repair companies sell kits / packets of re
Electronics Forum | Wed Nov 14 12:11:04 EST 2001 | eabbott
We are experiencing many solder balls after wavesolder. Two different board suppliers of the same board are involved. My initial reaction was that it was the process but in researching information in this forum I am beginning to wonder. How can on
Electronics Forum | Tue Nov 27 12:12:53 EST 2001 | Justin
We have noticed that when you are using a no-clean flux with the wave solder process that you will have additional solderballs. One thing that we have done is to change the PCB finish to a matte finish. This has greatly reduced the number of solder
Electronics Forum | Mon Nov 26 14:48:43 EST 2001 | PeteC
The tooling fixture has tooling pins to accomidate your PCBs. Typical PCB tooling holes are 0.125" dia. non-plated thru holes and 0.250"x0.250" from the edge of the PCB. Check out this link to EMC Global Technologies. They mfg. tooling fixtures for U
Electronics Forum | Fri Nov 16 03:03:44 EST 2001 | madreindeer
John, I have seen process mixed technology in customer site.Now they dont use wave but they print paste through hole components.It is good and fast but it did take a time when they found a right paste to do that.Stencil is plastic and aprox.3mm(3000
Electronics Forum | Fri Nov 16 10:58:31 EST 2001 | slthomas
Short of locking them up and checking them in and out (and writing up your operators for not checking them back in at the end of a shift), I dunno. In short, I think ya gotta be a tool Nazi. We only use hand tools (assigned to the operator's pers
Electronics Forum | Thu Nov 22 08:30:59 EST 2001 | krs
I have heard of this but do not have direct experience. Immersion tin is susceptible to moisture absorption particularly after washing off solder paste. So it sounds like your boards are picking up the solvent off the screen. Water rinse or degrease
Electronics Forum | Mon Nov 19 10:06:15 EST 2001 | davef
Git otta taun!!! I never have heard of an Sn62 BGA solder ball. Several thoughts on Sn62: * Look at http://www.smtnet.com//forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=4603&#Message17953& * Search the fine SMTnet Archives on � Sn62 �
Electronics Forum | Mon Nov 19 10:18:03 EST 2001 | gzweig
There is no question but that x-radiation is an ionizing radiation and can effect components sensitive to ionization . The higher the power level of the x-ray source, the higher the amount of ionization taking place. At low levels of x-ray we have ne
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