Electronics Forum: board (Page 1371 of 1642)

Re: all powerfull UP78..or is it..?

Electronics Forum | Fri Apr 30 11:03:27 EDT 1999 | Wade Oberle

| | Ok folk's has anyone used Alpha Metal's UP78 solder paste ? | | | | Our place is looking to move to that as the way to go, getting rid of the Hereaus 362's and Alpha 737's of the current set up. | | | | My question's are really : | | how is the

Any SMTnetters coming to the Chip scale and BGA National Symposium?

Electronics Forum | Thu Apr 29 17:33:30 EDT 1999 | Steve Gregory

Just curious, Are any of ya'll coming out here to the Chip scale and BGA National Symposium out here in Santa Clara, Cal-i-for-ni-yay next week? I'm a-goin'...gonna learn more about them little buggers...I just know enough now to be extremely dange

Re: Any SMTnetters coming to the Chip scale and BGA National Symposium?

Electronics Forum | Thu Apr 29 17:40:40 EDT 1999 | JohnW

| Just curious, | | Are any of ya'll coming out here to the Chip scale and BGA National Symposium out here in Santa Clara, Cal-i-for-ni-yay next week? I'm a-goin'...gonna learn more about them little buggers...I just know enough now to be extremely

Re: Successful Transfers to Contract Manufacturers

Electronics Forum | Wed Apr 28 14:32:36 EDT 1999 | JohnW

| | | Thank for the input. But I guess I was looking for more. We have been transferring boards for some time and a have good working relationship with our primary CEM and have worked out many bugs. I was thinking more on the order and don't shoot

Re: Hey Guys, you gotta check this out!

Electronics Forum | Mon Apr 26 13:19:29 EDT 1999 | Dave F

| Hey Guys! | | Look what I get to try and do this week! I got handed a cardboard box on Friday afternoon with the parts and 20 of these little jewels! That's both sides of the board by the way... | bla-bla-bla | | Sure you don't wanna take this o

Re: optimized profile

Electronics Forum | Mon Apr 26 16:39:46 EDT 1999 | JohnW

| | Hello all, | | | | Our guys here still have some questions on the "optimized" profile which sees a more moderate ramp up straight to reflow temperatures versus the conventional profile which has a plateau at around 150 Celsius. If the optimized

Re: WAVE SOLDERING and Gluing 0603 packages

Electronics Forum | Sat Apr 24 04:41:56 EDT 1999 | Murray Pulman

Dear C.K We are routinely wave soldering 0603 and sot23 on subcontract, hence we get what we are given!!. Being UK based we use a Blundell cms 400 dual wave soldering machine (made in Coventry), Tecan Stencils and Loctite 3612 adhesive. You must k

Re: Discoloured soldermask

Electronics Forum | Thu Apr 22 14:36:33 EDT 1999 | Dave F

| On various PCB's after building processes,such as reflow, flowsolder and wash. The soldermask on the PCB's have become discoloured, like a 'marble' effect all along the solder side of the board, it is lighter in contrast than normal, although when

Re: Discoloured soldermask

Electronics Forum | Thu Apr 22 18:07:38 EDT 1999 | Tom B.

| On various PCB's after building processes,such as reflow, flowsolder and wash. The soldermask on the PCB's have become discoloured, like a 'marble' effect all along the solder side of the board, it is lighter in contrast than normal, although when

Ceramic + Hi-temp solder

Electronics Forum | Wed Apr 21 12:03:59 EDT 1999 | Michael N.

I'm having problems with trying to get a good solder joint using a Ceramic PCB. We are using AMTECH hi-temp solder (ws-486 96.5/3.5ag). My profile looks great and I used the recommended profile from Amtech with a few adjustments. My max temp is about


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