Electronics Forum: viewing (Page 2601 of 7890)

BGA dropping off the board

Electronics Forum | Thu Feb 14 08:14:12 EST 2008 | davef

Questions are: * Do the BGA pads on the board take solder when you solder them by hand? * What is the temperature on the BGA pads during reflow? * What is the temperature on the other component pads during reflow?

Universal Electrical Drawing Manual

Electronics Forum | Thu Feb 14 05:37:13 EST 2008 | alternativesmt08

Hi, I am looking for a an Electrical Drawing Manual for a Universal COMBO B / VCD / SEQ model no. 6241B. If any one has or could put us in the right direction of acquiring this manual that would be fantastic. Many Thanks, Stuart

PB FREE AMD 940 SOCKET

Electronics Forum | Thu Feb 14 07:33:24 EST 2008 | cyber_wolf

Does anyone have any experience with this component ? We seem to have some warping issues through reflow. We have tried everything profile wise....pre bake parts etc.

PB FREE AMD 940 SOCKET

Electronics Forum | Mon Feb 18 11:23:14 EST 2008 | operator

Have you contacted the manufacturer of the socket? They usually have some insight. I have heard of large BGA sockets being warped when they are received and flatten out during reflow. That is crazy to me, but there are people dealing with issues like

PB FREE AMD 940 SOCKET

Electronics Forum | Mon Feb 18 11:24:41 EST 2008 | operator

Can the metal lever be removed prior to reflow to make a more even heat distribution around the socket?

siemens nozzle

Electronics Forum | Thu Feb 14 11:09:36 EST 2008 | soudomphong

I am looking for the cheapest 904 Siemens nozzle. Anyone that know where to get them please advise, thank you,

SN100C + phosphorus

Electronics Forum | Fri Feb 15 01:44:15 EST 2008 | taimju

Hi, I have heard that some have added small amounts phosphorus to SAC alloy in wave soldering and this way decreased drossing. Does anyone experienced this with SN100C? Regards, Juha

Inspecting a new stencil

Electronics Forum | Mon Feb 18 11:31:02 EST 2008 | davef

Print paste through the new stencil with a piece of mylar [or other clear plastic sheet about the thickness of paper] between the board and the stencil. Dispose of the mylar according to local practice after confirming proper aperturation of the sten

Inspecting a new stencil

Electronics Forum | Mon Feb 18 13:17:18 EST 2008 | smtnet51

Why not just print a board? You have a spare board for your profile right? When you are done you have a working program and you know if the stencil is correct.

Inspecting a new stencil

Electronics Forum | Wed Feb 20 14:38:51 EST 2008 | carln

We are in a situation where our parent company sends us stencils from Japan, but the Gerber is not sent. When we need a replacement stencil, we need to wait for Japan to send it. Can your stencilscan system reverse engineer the stencil and generate


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