Electronics Forum: fine pitch (Page 6 of 142)

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!

Solder Paste and fine pitch components

Electronics Forum | Wed Sep 18 06:53:05 EDT 2002 | CH

1) For solder short, pls check the paste height. Too much vol will cause short. For 15 mils use 5 mils thickness stencil if possible. Check profile preheat time to prevent hot slumpof the paste. 2) type 4 powder will be better for 15 mils pit

Less solder with fine pitch qfp

Electronics Forum | Tue Sep 30 14:06:04 EDT 2008 | realchunks

What pitch? You can go 5 mil or even 6 mil stencils depending on your screen printer. Also what do you consider "less solder"? What defect are you having. Remember on a QFP you use the heel filet to determine proper solder joint - not the toe.

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

super fine pitch paste & dispensing questions

Electronics Forum | Mon Aug 16 13:38:35 EDT 2010 | rl

i would like to request some advice on manually dispensing paste for super fine pitch components. first some background. i am a small design house and specialize in sub-miniature prototypes for avionics. so far, i have mostly used stainless steel st

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


fine pitch searches for Companies, Equipment, Machines, Suppliers & Information

Best SMT Reflow Oven

High Throughput Reflow Oven
Win Source Online Electronic parts

Best Reflow Oven
Circuit Board, PCB Assembly & electronics manufacturing service provider

Stencil Printing 101 Training Course