Electronics Forum: pass (Page 82 of 142)

Re: Soldering Researcg Question

Electronics Forum | Mon Mar 01 22:33:07 EST 1999 | Dave F

Hello, I'm doing some research for a project of mine. I figured that since you sold things related to soldering, you might know. I am wondering if there are any companies that you know of that do manual soldering while st

Squeegee Speed

Electronics Forum | Thu Feb 18 17:49:28 EST 1999 | Ryan Jennens

Hey all- My question is this: My stencil printer operator has said that he has to wipe our 6-mil stencil each pass to get the paste in the 20-mill pitch aperatures for a QFP to release well. We are using Amtech NC-559 type 3 paste with 89.5% metal

Re: Good Solder Joint Failures

Electronics Forum | Thu Feb 18 17:06:33 EST 1999 | Dave Jurena

Hope some of you out there can help me with this one. I am getting feedback from our test department that they are showing opens on solder joints which have visually good wetting. The touch-up operators confirm that the joint looks good. All they

Re: Squeegee Pressure

Electronics Forum | Fri Feb 12 18:48:19 EST 1999 | Jon Medernach

Bill, You should wipe clean. The thin layer will dry out quickly and cause other problems. Remember squeegee down stop and squeegee pressure are seperate issues. If your downstop is to low the stencil and board will flex down, after the squeegee p

Re: double reflow

Electronics Forum | Thu Feb 11 09:59:49 EST 1999 | Dave f

I would like to have information about the processability of different packages. In particular I would like to known for which package I can use a double reflow for soldering. Best Regards Michele: Double sided reflow is common pra

Re: white residue

Electronics Forum | Thu Jan 28 09:45:44 EST 1999 | parag

i am working with the noclean process and getting white residues on the bottomside of the board probably due to the wave soldering flux.i am using a no-clean solder paste and a noclean wave solder flux.The boards passed the accelerated tempe

Re: Cleaning No Clean Wave Solder Carriers

Electronics Forum | Fri Jan 08 17:56:16 EST 1999 | Eric Miller

Hi Chrys, Hate to bring you down, but, wave solder pallets exposed to any kind of flux is subject to "Build up" on the carrier. You still have to clean them, hopefully on a regular basis.If the pallet is being run in a high production envirnment, I w

Re: Wavesolder solder balls

Electronics Forum | Fri Oct 30 18:08:59 EST 1998 | Dave F

I finally got my problem figured out on the bridging, the only thing I'm finding is that I notice some litlte solder balls on the bottom of the board. Is that normal? Is that why I'm getting bridges? Has anyone came across this problem and pass t

Re: Wavesolder solder balls

Electronics Forum | Sat Oct 31 10:56:16 EST 1998 | Dennis Barry

I finally got my problem figured out on the bridging, the only thing I'm finding is that I notice some litlte solder balls on the bottom of the board. Is that normal? Is that why I'm getting bridges? Has anyone came across this problem and pass t

Re: unsoldered joints

Electronics Forum | Tue Sep 22 09:07:02 EDT 1998 | Steve Gregory

Hi Jacqueline! Do these joints that you're having problems with happen to be on fine pitch solder joints? Are the fillets staying attached to the foot and separating from the pads cleanly? If that is true, are there many vias concentrated aroun


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