Electronics Forum: board (Page 176 of 1638)

Impurities in Gold

Electronics Forum | Tue Oct 06 16:50:51 EDT 1998 | Manish

Hello Everybody Would anyone of you know about the impurities in the Ni/Au pad metallurgy (board side metallurgy) affecting the assembly of the chip on the board. I was told that impurities in gold may lead to void formation in the solder bumps.

Tank Cleaning Of Stencils & Boards

Electronics Forum | Mon Sep 14 18:09:16 EDT 1998 | Dave F

| Our company currently donesn't have any type of sonic wash to wash boards that have been "miss printed" Wanting to know the best way to go about this. So what we are having to do is spray down the boards with alcohol and wipeing the solder paste

DIP surface mnt. I.C. to DIP .1 inch feed thru adapter boards ?

Electronics Forum | Fri Aug 21 09:43:51 EDT 1998 | Doug K.

Anybody know where I might find a DIP surface mount I.C. to a DIP .10 inch feed thru adapter board munuf. or distributor ? Thankyou in advance. Doug K.

Re: Will somebody explain HASL please

Electronics Forum | Thu Aug 20 09:47:46 EDT 1998 | Dave F

| Will somebody please explain HASL (here). Thanks. Tryin: HASL: Hot Air Solder Leveled. A board fabrication process that applies an oxidation preventing solder coating to copper pads on the board. Dave F

Reflow Visionary

Electronics Forum | Thu Jul 23 12:40:23 EDT 1998 | Jason Gregory

Does anyone out there know of anyone renting equipment to record video of reflow actions? I am looking for a hi-temp camera to run behind boards in my ovens to record what's happening in there. We have some crazy stuff going on with some boards. Help

Re: Chip On Board

Electronics Forum | Thu Jul 23 11:31:37 EDT 1998 | Russ Miculich

Is this flip chip on board or chip and wire? | Yes, I realize that COB isn't really SMT (it is on the surface), but where can I get some free (IPC has some stuff for sale), fast info. about IC pad spacing for COB? | Thanks

Ceramic PCB...WHERE?

Electronics Forum | Fri Jun 19 15:30:45 EDT 1998 | Tim Mattson

I'm hoping someone out there can let me know who manufactures ceramic PCBs or boards made of another material that can withstand 400C for an extented period of time. The board is approximately 8"x16". Thanks!

BGA and Gold Boards

Electronics Forum | Fri Jun 19 09:45:21 EDT 1998 | Mike Cox

Has anyone had experience with placing BGA on gold plated boards. I thought I read a while ago there was a problem with embrittlment causing cracked joints. If anyone has experience with this your feedback would be great. Mike

Re: Help me increase my first pass yields

Electronics Forum | Thu Jun 04 15:41:07 EDT 1998 | Chrys

| If you could measure and chart 3 variables in my process, what would they be? | The boards that I produce are on panels that are 12up and 2x4 up. All boards are single sided paper base w/o plated thru holes. They are on scored panels that measure

How to clean a Entek Coating Board

Electronics Forum | Fri May 29 14:01:36 EDT 1998 | Joseph How

Does anyone out there can let me know how to clean a Entek Coating Board if I have a misprint during solder paste printing?


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