Electronics Forum: alpha and metals (Page 7 of 30)

The truth about lead-free and environment

Electronics Forum | Fri Mar 24 13:05:08 EST 2006 | samir

Patrick, I learned at a Lead-Free seminar, where the seminar lecturer was a proponent of Bismuth in soldering, that Bismuth is actually "safe to eat" and is one of the few non-toxic metals around.

Kester R562 and using lead free components

Electronics Forum | Fri Jul 06 12:39:01 EDT 2007 | blnorman

What's the metallization on the board? We use an immersion tin board and had to increase our profile to successfully solder.

proper discarding pcba's and potted pcba's

Electronics Forum | Wed Aug 05 14:18:47 EDT 2020 | dwl

Anything with metal in it can be recycled; PCBs, wire, lead trimmings, used solder paste, etc. There are companies that specialize in this sort of waste. Typically they will provide you with containers and once you have enough waste, they will come p

Differences between screen and stencil printing

Electronics Forum | Thu Dec 16 15:00:20 EST 2004 | glaucon

Simple differences. Both processes require a very similar machine platform, controlled motion, vision fiducial recognition and alignment of a substrate (PCB or hybrid ceramic) to the "image", the image being either a stencil (hence stencil printing)

Re: Quick Frame and Dek 265GS

Electronics Forum | Thu May 28 21:35:12 EDT 1998 | Soeurn Ses Top Line

| | | Does anyone use the "Quick Frame" with their Dek printer? | | The threads on the screws keep stripping, so we thought | | maybe we'd send our frames to a machine shop for heftier | | screws. Has anyone done this? Is there a better way? | | Isn

Quad ZCR 941 and Lead Free?

Electronics Forum | Mon Jun 20 10:59:18 EDT 2005 | Jason Fullerton

Extra cooling is better (Alpha recommends -3 to -7 degC/sec) for cosmetics. Less chance of s o called 'cooling lines' that look similar to 'cold' tin-lead joints. (Seems a bit steep to me - I worry about the risk of cracking ceramic caps.) Might be

Re: WAVE SOLDERING and Gluing 0603 packages

Electronics Forum | Fri Apr 23 15:33:50 EDT 1999 | C.K.

| | Has anyone had trouble waving and gluing 0603 R's and C's? At my company, our designers have "opened the floodgates" on bottom-side 0603's. | | | | We've got an EPK+ with rotary chip and omega wave but can't seem to get skip-free soldering on t

Looking for Tape and Reel Holders

Electronics Forum | Wed Jun 26 17:51:55 EDT 2013 | ryansmta

Thank you for your response and interest to help me with my research work. I am actually in need of the Reel Holder. I am aware of a few services that can package the treated 0402 / 0201 components into a tape and reel. I have also spoken to MidAm

Nitrogen use in reflow and wave

Electronics Forum | Thu Apr 18 23:56:27 EDT 2002 | Abelardo Rodriguez

I'm trying to get a better understanding of the cooking process of pcb's. The use of nitrogen in reflow and wave ovens. Seems to have a wide margin of acceptance as a standard gas to prevent oxidation of metals in the board. Has any one heard or us

Lead Free and Leaded Process Mix

Electronics Forum | Tue Jul 19 06:07:30 EDT 2005 | GS

Yes Rob, I would like to know the type of metal finisching like JST097 or IPC-1066 or IEC .... suggest to do. I would like to avoid i.e. to get Bismuth finish on components terminals that I still have to solder with alloy containing Pb. Also to ha


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