Electronics Forum | Mon Mar 09 16:36:38 EST 1998 | Jim McLenaghan
| We have a double sided pcb that is surface mount on both sides. Now a Through Hole connector has been added. Appart from hand soldering does anyone have info. on reflow soldering the part. The connector is 0.1mm pitch, square legs. | 1) Do you need
Electronics Forum | Wed Jul 12 11:26:12 EDT 2006 | flipit
Hi, I believe you have classic gold imbrittlement here. With 80 microinches of gold you are way over the limit. You can try to reflow longer time and at a higher temperature. The gold does not melt into the solder joint. The gold dissolves into
Electronics Forum | Tue Jul 06 05:00:33 EDT 2010 | smthexi
Hello Sid: i don't know where you bought the machine. the central support system is an addition part, it is specially designed to prevent the PCB board from bowing. i know that the wave soldering machine which made before did not include this useful
Electronics Forum | Wed Sep 29 11:32:02 EDT 2010 | asksmt
Hi, i have designed Double sided PCB all SMT Parts are mounted on bottom side and TH on Top Side. with recent testing we found that the decap needs to be placed closer to IC VDD-GND Pins. as i can't place TH Parts since i don;t have space on botto
Electronics Forum | Fri Jan 31 13:55:56 EST 2003 | MA/NY DDave
Hi I hope I am on point based on my reading. The outer edges bow spec depends on a gradual deformation that finally builds up to the outer edges. If you mathematically move this deformation back you will have allowable deformation at the point you
Electronics Forum | Tue Sep 11 22:40:26 EDT 2007 | philip_yam
We are testing SAC paste for thru-hole components in the 2nd reflow process. The solder joint is alright but some problem encountered in FR1 or CAM2 PCB after multiple times of reflow due to the temperature. We are very interested in Zn or Bi-based l
Electronics Forum | Thu Nov 08 12:05:05 EST 2007 | jdumont
Hole size may not have been an issue for you because your holes were already big enough? The alloy you are using has a lot to do with this I believe also. We are already at 5 seconds dwell for this which is mfg recommended for our solder. The caps we
Electronics Forum | Fri Aug 03 10:18:36 EDT 2012 | pctech
Greetings everyone, I am trying to figure out away to clean our stencils by hand. Unfortunately, we do not have a stencil cleaner due to size and finance of our company. I am using Ionox to clean them daily.But the walls do not come clean. Is this a
Electronics Forum | Wed Oct 21 13:50:50 EDT 2020 | kierantennant
hi, I am experiencing a problem with our wave solder machine where zone 2 (forced convection) fan will not work when called upon. so we swapped it with zone 3 to make sure the motor was not at fault and it wasn't so we moved the A1 into a different 2
Electronics Forum | Wed Jan 19 02:00:36 EST 2000 | erico
Hi wolfgang, I think Pc is not talking about the tombstone cause this terminal lifted is different from tombstone. The terminal of chip is still there but can not be solder anymore so we have to replace the chip. I also facing this problem. So can yo
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