Electronics Forum: mani (Page 45 of 496)

Selective BGA ball removal

Electronics Forum | Fri Nov 07 16:00:45 EST 2003 | Don A

It would depend on how many boards and parts you need to build. I would prefer an etch cut as it leaves the the part intact and you get the strength of the solder joint. It also reduces the handling of the BGA and associated damage from that

SM termination with Nickel barrier with 100% tin plated finish

Electronics Forum | Thu Nov 13 20:48:04 EST 2003 | davef

There a number of studies like this published by component fabricators. Many can be found on the net. For instance: http://www.amd.com/us-en/assets/content_type/DownloadableAssets/Pb-free_Board-level_reliability_study.pdf

Quad ZCR oven password

Electronics Forum | Tue Mar 29 07:55:23 EST 2005 | pjc

FYI: ZCR, British oven maker, was purchased by Quad many moons ago. When Tyco bought Quad, ZCR was not part of the deal. In fact I think production had stopped in the U.K. facility by then. Tyco has no legal obligation to suppoort these ovens.

SMD Double Splice Tape

Electronics Forum | Fri Dec 05 08:29:33 EST 2003 | vervin

Try Siemens splice tape. It comes in two different sizes and works very well. I've tried Boyd, but we had to many problems with the tape breaking. If you interested, I can email you part numbers for the splice tape and supplies.

TDK RX11 Machine

Electronics Forum | Thu Dec 04 08:02:17 EST 2003 | stefwitt

Hi Marco, most likely your axis has two limit switches and possibly a home sensor. Limit switches are NC and in case of bad connection or wire break the axis will not move, no matter how many cards you swap.

Goldfinger protection

Electronics Forum | Mon Dec 29 03:56:04 EST 2003 | Tony Tan

We have do away with Kapton tape many years ago, now using the Titinium clip for GF protection during wave soldering.

Problems about Profiling board with P5 socket

Electronics Forum | Tue Jan 13 20:56:29 EST 2004 | davef

You have too many rules. Priority #1 melt the solder. Priority #2 worry about the other stuff. Priority #3 count the fly shit.

Printing paste through screeen mesh versus stencil

Electronics Forum | Thu Feb 05 17:33:08 EST 2004 | black5629

Yep, did that for many years in the 80's and early 90's. I wonder if their are suppliers that still do the emuslions? Anyone?

.5mm BGA

Electronics Forum | Fri Feb 20 13:55:32 EST 2004 | black5629

That will depend on so many factors: solder type / flux type sphericity of balls in paste stencil type (laser chem etch, electro form etc.) print paramaters I will tell you that it can be done.

SMT problems

Electronics Forum | Fri Mar 05 15:43:10 EST 2004 | Quetza

You can have many problems, but the most commons are that your Z belt is too Lose or is time to replace it, the second is that your Z motor went bad. Hope these woks for you


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