Electronics Forum: fine pitch components (Page 8 of 222)

Non wetting on fine pitch product

Electronics Forum | Thu Sep 07 09:08:57 EDT 2006 | Bubba

OK, part touching paste before reflow? Check part. Maybe bad plating. Check reflow profile by slowing conveyor.

Non wetting on fine pitch product

Electronics Forum | Thu Sep 07 14:43:33 EDT 2006 | davef

Questions are: * So after you spot one of these leads sitting on a nice pillow of solder, what happens? * Do you rework the part? * Does it take solder? * What do you do to make it take solder, if it does take solder?

Non wetting on fine pitch product

Electronics Forum | Fri Sep 08 08:00:41 EDT 2006 | davef

That's your clue. Your reflow is running ~240*C and your soldering iron is running ~370*C. Dial-up the heat.

Less solder with fine pitch qfp

Electronics Forum | Mon Sep 29 11:44:39 EDT 2008 | manishc

We r facing less soder problem with qfp,using 4 mil tencil and lead free paste,tried out different combinations of reflow profile,can anybody suggest?

Less solder with fine pitch qfp

Electronics Forum | Mon Sep 29 14:47:15 EDT 2008 | davef

Let's narrow this down. Questions are: * Are you putting the proper amount of solder in the board with your stencil print process? * If you are putting the proper amount of solder in the board, where is the solder going? Pick one and then fill-in th

Trouble selective soldering fine pitch connectors

Electronics Forum | Tue Feb 26 14:39:19 EST 2013 | eniac

Hi, guys. Does anyone use a EBSO selective soldering machines? Can you write your parameters for two rows connector? Thx!

Re: fine pitch on thick copper

Electronics Forum | Mon Dec 20 12:50:27 EST 1999 | Wolfgang Busko

Hi Pascal, 0,65mm pitch normally isn�t much of a problem. With 90�m CU I don�t have any experience but would like to know what deviation from nominal value for the pads you get with different PCB-deliveries. In short, for the standard Cu=35�m we se

Trouble selective soldering fine pitch connectors

Electronics Forum | Thu Dec 06 12:37:14 EST 2012 | deanm

We are having difficulty with bridging on a 2x50 pin 0.050" fine pitch connector using our selective soldering machine. It usually bridges at the end of the row, but sometimes it bridges all the pins together as it drags across (solid bridging). I

Trouble selective soldering fine pitch connectors

Electronics Forum | Mon Dec 10 13:26:40 EST 2012 | dyoungquist

We are using our selective solder machine to solder a backplane with sixteen (16) 4x48 pin 0.080" connectors. Our first pass yield is about 85% meaning that 85% of the connectors come out with no bridges. Not quite as fine pitch as your connector a

fillets on fine pitch parts/poor wetting

Electronics Forum | Wed Nov 06 19:03:33 EST 2002 | broncos

If you are certain that reflow process is good, I would suggest starting checking the following: 1. Check to see if leads / pads are contaminated or oxidized. However, this usually results poor solder quality throughout the board. 2. Check the amou


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