Electronics Forum | Sun May 16 10:11:50 EDT 1999 | M Cox
| I'm running memory module product- SMT double reflow ( 12 modules per panel). I'm using the epoxy base solder paste in order to reduce the flux spattering problem onto the gold finger which could lead to the intermittent contact problem. | | I do
Electronics Forum | Sun Sep 26 11:54:06 EDT 1999 | Earl Moon
| i had a problem here, during the wave soldering process, we apply a water soluble mask on the gold finger to protect it from contamination. But after washing, there is still some mask left on the gold finger. | Can anyone pls advise is there any pa
Electronics Forum | Wed Aug 23 08:50:04 EDT 2000 | Dave F
Dr. Lee: We had a discussion on the forum recently and I wanted to get your input. What is the best method(s) for elimating (reducing) no-clean solder paste flux from splattering on gold interconnect fingers on a PCA?
Electronics Forum | Tue Jan 06 21:19:05 EST 1998 | Dominic Nguyen
We use no clean paste and sometimes experience flux splattering which gives spot on gold fingers. Need help in analize the cause. thx.
Electronics Forum | Wed Mar 16 09:48:44 EST 2005 | jdengler
I'm with Russ on this one. Had a similar problem with a flex circuit that used gold contacts into a ZIF connector on a ridged PCB. After may test I finally convinced the customer to do some test on the ZIF connector. The end result was flux contam
Electronics Forum | Wed Mar 21 16:32:03 EST 2001 | mparker
The root cause is dependant on the type of solder "splash", ball, whatever, that you are seeing post reflow. If it is smears, then cleaning the stencil underside is probably the answer. Are you using automatic wipers? How many print cycles between w
Electronics Forum | Tue May 19 08:48:05 EDT 1998 | Aric Parr
| | I am running boards with gold fingers on a pallet for | | masking purposes. The pallets worked fine for a while | | but know the gold fingers are getting solder on them. We | | have tried everythin: new pallets, cleaning the pallet | | and boa
Electronics Forum | Fri May 08 16:30:59 EDT 1998 | Chrys
| I am running boards with gold fingers on a pallet for | masking purposes. The pallets worked fine for a while | but know the gold fingers are getting solder on them. We | have tried everythin: new pallets, cleaning the pallet | and board to be s
Electronics Forum | Thu Sep 02 11:45:47 EDT 2010 | kevm
We have tried solderability testing using an agressive flux and have had good results. However, our Mfg process uses laser soldering equipment which is a validated process and we are limited on the type and amount of flux we can use due to ionic cont
Electronics Forum | Wed Jan 14 08:28:15 EST 1998 | Allison
Contact your solder paste manufacturer and get the reflow profile recommended for that particular paste. Then, duplicate that reflow profile on your oven. You will need to use thermocouples. You may have to tweak this profile a little. | We use no
