Electronics Forum: oxidezed board problems (Page 1 of 436)

rigid-Flex board via problems

Electronics Forum | Tue Jan 17 12:06:12 EST 2012 | cobham1

The via's are cracking which then is causing all kinds of problems.

rigid-Flex board via problems

Electronics Forum | Thu Jan 12 14:17:07 EST 2012 | blnorman

How are the vias failing? Barrel crack?

rigid-Flex board via problems

Electronics Forum | Fri Jan 13 13:22:34 EST 2012 | mosborne1

I would recommend that you turn toward your PCB supplier probably China and talk to them. You should always bake your boards if this occurs. If you purchase them form a trusted source you should store them in a McDry until you use them if possible. I

rigid-Flex board via problems

Electronics Forum | Thu Jan 19 12:38:03 EST 2012 | cobham1

I am wondering if the failurs that people see are discovered right away or when the units are out in the field. Reason I ask this follow up question is the units that are having problems are all returns from our customers. Is there a way to check for

rigid-Flex board via problems

Electronics Forum | Wed Jan 11 14:54:36 EST 2012 | cobham1

With a large number of you out there building rigid-flex boards. I am wondering first what kind of profile do you use and what are you peak temps. I ask these questions because we are finding that our boards have a high moisture level and we are also

rigid-Flex board via problems

Electronics Forum | Thu Jan 12 20:11:25 EST 2012 | davef

Isola water pressure. Between a 210°C normal tin lead cycle and a 250°C lead-free assembly cycle, the vapor pressure doubles. Reflow temperature [*C] Vapor pressure of water [psi] 150 100 200 225 210 260 220 320 230 400 240 480 250 580 300 1

rigid-Flex board via problems

Electronics Forum | Thu Jan 12 13:18:07 EST 2012 | swag

215 to 220 deg.C peak reflow. We bake then store all PCB's in low humidity cabinets (appox. 3% RH) prior to running.

Pallet problems

Electronics Forum | Fri May 08 15:12:23 EDT 1998 | Ryan Jennens

I am running boards with gold fingers on a pallet for masking purposes. The pallets worked fine for a while but know the gold fingers are getting solder on them. We have tried everythin: new pallets, cleaning the pallet and board to be sure there

Ekra E4 transport problems

Electronics Forum | Fri Jun 12 08:37:21 EDT 2015 | cgreiner

Check to insure that cut outs in the PCB is not triggering the board sensor on the input of the unit. We had a few boards where the cutout in the board was seen as the end of the board and it would stop several inches from the board stop. We ended

double sidded reflow problems

Electronics Forum | Mon Aug 13 08:00:46 EDT 2007 | davef

Are the components that fall from the board solderable? Is the board solderable? Where is the solder for the components that fall from the board [eg, on the pads, on the component]?

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