Electronics Forum | Thu Nov 07 21:28:31 EST 2019 | sssamw
The connector is so long, and has big metal parts, it will be little deformed during reflow I guess, andthe pins planarity should be critical for 200 pins. Did you measure the non wetting pins profile to see if temperature ok? And maybe you can try u
Electronics Forum | Sat Feb 12 09:08:47 EST 2000 | Sal
Experiencing a problem with a 208 PBGA device. I am achieving good wetting with the exception of one ( damn) pin on the outer corner.I have a really good profile but the worrying thing is that it is so inconsistant. Once this open pin failure is dete
Electronics Forum | Sun Feb 13 01:35:55 EST 2000 | Dean
Without further information my first guess would be lack of flux to "cut through" the ENTEK layer. Question: In X-ray is the suspect ball of equal diameter when compared to adjacent balls? If no then the volume of solder is different which would po
Electronics Forum | Thu Aug 22 23:09:34 EDT 2019 | sssamw
Yes, you need work with supplier to see if can run pin in paste for these connectors, even do some experiments. A step-up stencil would be good for these connectors, also connectors pin size and length match with PCB hole design.
Electronics Forum | Fri Feb 02 21:31:38 EST 2007 | bill_gates
Hi, I am considering to use pressfit D-Sub and DIN connectors on a backplane. The IPC guideline does just cover pin protrusion for soldered pins, which have to be flush with the board as a minimum acceptable design. Yet, if the backplane may be thic
Electronics Forum | Thu Feb 08 00:40:37 EST 2007 | Scott
I think that as long as the compliant portion of the pin is completely in the board, pin protrusion should not make any difference. I have seen some large Aerospace companies internal specifications and the two requirements seem to be that the compli
Electronics Forum | Thu Feb 08 21:30:56 EST 2007 | Bill
Yes, many thanks for your reply.
Electronics Forum | Thu Apr 29 17:52:33 EDT 2021 | mike_infl
We have an assembly which we are trying to machine pick and place a Mil-Max pin that is .020 dia placed in a .026 hole. The board is .1125 thick. We have to place 106 of these pins. Without going into the challenge of getting proper hole-fill to me
Electronics Forum | Mon Jul 22 09:53:13 EDT 2019 | kylehunter
Hey all! As background, I recently purchased a full SMT line for my company. We have a DEK 265, an assembleon opal xii, and a Heller 1500. Currently our jobs are leaded, and the heller is working perfectly. An upcoming job that we are potentially g
Electronics Forum | Thu Aug 22 16:25:18 EDT 2019 | scotceltic
Yes, unfortunately a lot of datasheets these days do not contain the temperature resistance to determine if it can handle the PIP application. In the past I have always used a 250 C at a min of 5 sec for the material. Also, the part should have sta
