Electronics Forum | Thu Nov 17 08:57:39 EST 2005 | russ
No clean and foam fluxing is not a very good process from my experience. I know that the flux manufacturers claim that they are suitable but I am not sure what "suitable" means. I would bet that you have very inconsistant flux coverage. How often
Electronics Forum | Sun Dec 11 08:13:27 EST 2005 | stepheniii
If you are taking off the old BGA then the board finish is not the same as it was orginally. I would want to clean the pads off as much as possible and then use sticky flux with the new BGA. But on the other hand, Aim solder has an article about smal
Electronics Forum | Wed Dec 14 06:18:20 EST 2005 | tk380514
right again grant, consider the fact that if you spend enough time inspecting the soldered boards/pre-oven and check the BGA solder paste pads before, and clean the stencil regularly and check solder paste dryness, check oven profiles then after chec
Electronics Forum | Fri Dec 16 08:11:39 EST 2005 | rlackey
Hi Dave, Sorry, blonde moment. For our prototype line we decant the paste into a cleaned out pot, that goes under the printer hood, with the lid left on, the rest stays in the fridge until it starts to run down. If we get it wrong we definitely
Electronics Forum | Thu Dec 29 11:54:31 EST 2005 | Cmiller
We bought the lead free pots for the Ersa machine and change back and forth. We had a lot of problems running SAC305 in the Ersa. It seems to create a ton of dross and you need to frequently clean and flux the nozzles. I would really like some feed
Electronics Forum | Thu Jan 12 11:13:06 EST 2006 | Cmiller
I am not too concerned about the cost of silver, SAC305 generated so much dross in our selective solder it was hard to keep the machine running for more than 20 or 30 minutes without fluxing the nozzles and cleaning the pot, and yes, we are using nit
Electronics Forum | Thu Jan 12 15:31:06 EST 2006 | Cmiller
It really does not say what it is. We used to use oil on our wave, it even had a built in pump and drain in the pot to keep it fresh and at the right level, worked great, made a hell of a mess. A big no-no for no-clean. I think most people got away f
Electronics Forum | Sat Jan 21 16:36:19 EST 2006 | gipos
Hi James, You can use the same flux for micro BGAs.The 529D we used for rework of high freq. CSPs and even w/out cleaning it still worked on 2.5GHz.We have not washed the flux for 6 months and the RF features of the circuits remain the same. No chan
Electronics Forum | Wed Jan 18 12:14:50 EST 2006 | chunks
I've seen both schools of thought on this. Do you really want to pay someone 7 bucks a hour to pick up and seperate 30 cents worth of parts an hour? Then again, if they are really expensive parts worth reclaiming, you need to find out why your mach
Electronics Forum | Mon Jan 23 08:15:33 EST 2006 | pavel_murtishev
Good day, Vibratory (MultiStick) feeder is bottleneck of any placement machine. If you feed expensive IC�s via vibratory feeder they surely will be damaged. If you really care about expensive IC�s equip you placement machine with reject conveyor. In
