Electronics Forum | Thu Apr 20 02:44:39 EDT 2017 | tsvetan
The hole is too big, you should reduce the size in the next PCB revision. The middle joint is soldered at low temperature you can see how the solder didn't distributed evently and cooled on waves. The solder joint at the bottom didn't wet the capac
Electronics Forum | Thu Apr 20 03:50:35 EDT 2017 | cromaclear
To overcome the dewetting issues of the past, a number of techniques have been used such as alternating directions on the wetted nozzle; this helps to avoid the solder biasing to one side causing the other side to oxidize and de-wet. Another method o
Electronics Forum | Mon May 01 12:32:50 EDT 2017 | emeto
Looks like you have bad wetting. I will do in this order as it is easier to troubleshoot starting with the machine and transitioning to the PCB: 1. First clean some bare PCBs really good and try again. 2. Check thermal profile 3. Check flux - amount
Electronics Forum | Sun Jan 17 13:05:33 EST 2010 | smellew
Rodrigo, MCS PC Pin 1 To Pin 2 Pin 4 To Pin 5 pin 6 To Pin 3 Local Links MCS 9 Way Male Link 2 & 8, 3 & 7 PC 9 Way Female Link 7 & 1, 4,6 & 8 If you need anything else let me know Regards Llew
Electronics Forum | Wed Jul 20 13:28:02 EDT 2005 | Theo Doucakis
I am looking for some guidance on the proper pin to hole ratio for waved pins. Theo
Electronics Forum | Thu Oct 28 15:12:45 EDT 2021 | ttheis
Down-size or stagger the pin holes to "grab" the pins and hold them in place.
Electronics Forum | Mon Jun 18 01:23:07 EDT 2001 | gregH
I have a 10-pin single in line connector that is reflowable. Pin size is 1.0mm and my pcb drill size diameter for the pin is 1.5mm. is it okay for pin in hole process ? I have only 2 pcs of pth components and they are the 2 10 SIL connectors. What's
Electronics Forum | Mon Oct 12 15:51:47 EDT 2015 | davef
IPC-A-610E-2010, Acceptability of Electronic Assemblies, 8.3.4 Castellated Terminations talks to the acceptability of solder connections on components like yours. It’s tough to say from the pictures, but I’d say your issues are: Missing solder: Plat
Electronics Forum | Tue Sep 24 14:38:53 EDT 2002 | Jim M.
The EMS company i work for assembles a small PCB board that requires 10 solid press fit pins installed. The pins are Phosphor Bronze, CDA-510 Alloy, Grade A, 3/4 hard with a finish of .00012 min tin/lead over .00005 min nickel.I would like these pla
Electronics Forum | Thu Feb 10 08:25:02 EST 2005 | marakas
Could anyone advise what BGA rework rate we should expect with product that has 4 BGAs (224 pins, 196 pins, 160 pins, 48 pins). Negative factor is that we have old and tired pick & place - Panasonic MPA-G1 or MPA-V without AOI.
