Electronics Forum | Wed Feb 28 03:57:46 EST 2001 | peterbarton
Are you using a water based flux? Are the solder balls mainly around or near non-plated holes or near the edges of the PCB? If so the preheat must be set so the water content of the flux is fully evaporated before the board hits the solder wave. If
Electronics Forum | Fri Nov 17 09:24:33 EST 2006 | Brandon
Thanks Russ. I have contacted the board house. Will post results later.
Electronics Forum | Fri Feb 21 11:08:09 EST 2014 | patrickbruneel
Have you figured out what the problem was?
Electronics Forum | Mon Apr 21 11:55:29 EDT 2008 | realchunks
"Disturbed" usually means some form of movement. I would think your leads are moving due to warp as the board exits the reflow zone. Not knowing your profile, I would suggest checking your profile. Make sure you have adequate "above liquidous" and
Electronics Forum | Thu Jan 07 08:45:05 EST 1999 | Dave F
| We are currently fighting a dross battle on our non-inerted waves. We are currently using a bar solder that barely meets QQS-571 for Alloy/Impurity. | | Is anybody using HI FLO in a non inerted wave? Do you see a measureable decrease in dross? |
Electronics Forum | Wed Jul 19 16:28:31 EDT 2000 | Boca
Kinda along the lines 'if it comes we will build it'. Perhaps you can assemble it, I've not done it, but a question to ask a bit earlier is - should we. Check the specifications for the component, published by component vendor. Most of them really
Electronics Forum | Thu Oct 07 16:57:02 EDT 1999 | Glenn Robertson
| | I have a board, 4 spacers needed to be soldered on the board | | first with the normal 62Sn37Pb alloy. Then, capacitors are manually soldered on the boards. The density of the board is quite high. If we wave soldered capacitors first, there wi
Electronics Forum | Fri Oct 08 16:48:57 EDT 1999 | Dave F
| I have a board, 4 spacers needed to be soldered on the board | first with the normal 62Sn37Pb alloy. Then, capacitors are manually soldered on the boards. The density of the board is quite high. If we wave soldered capacitors first, there will b
Electronics Forum | Tue Jul 14 15:21:28 EDT 1998 | Brian Conner
| We are wave soldering a board having 24 similar thru hole connectors on it, using a wave soldering pallet. The problem is that one particular pin of connector in around 6-9 connectors get excess solder on the bottom side. I have tried all the par
Electronics Forum | Wed Jul 19 17:34:25 EDT 2000 | Deon Nungaray
Craig, I'd be really hesitant in pursuing this method for a TQFP. Remember, most SMD's are rated for a maximum rising slope of around 4C/Sec. Immersing a fragile TQFP in a hot wave of molten solder will probably exceed this ramp up rate. Besides thi
