Electronics Forum | Wed May 24 16:29:34 EDT 2006 | smt_guru
Yet another example of narrow focus. "What's the best and latest machine out there, and should I use a technology that's been around for decades." Wrong approach there, Chunks! Think outside the box. My firm, Worldtronics Consultancy Services, In
Electronics Forum | Wed Oct 04 10:18:51 EDT 2006 | greg york
Now seen the Blow Holes and shallow inverted and non wetting problem an aweful lot over here. Over came the Blow Holes and shallow inverted joints by washing the bare PCB with hot Saponifier then rinse and dry = problem dissapears. Think most PCB ven
Electronics Forum | Wed Jan 17 15:13:24 EST 2007 | jaime39
When placing the part to be reflow try applying heat to the board from the secondary side until the primary side has a temperature of about 130 degrees celcius. Following this procedure it should minimize the heat exposure of the part being soldered.
Electronics Forum | Thu Mar 01 18:11:41 EST 2007 | sueph
Samir, thanks for the reply. We are wondering if this idea came dowm from a customer a long time back, or maybe from Mil Std 2000. I've never worked with Mil Std 2000, so I don't know about that. We can not find anything in Jstd or 610 about it.
Electronics Forum | Thu Sep 27 17:25:33 EDT 2007 | chef
The short answer is immediately after reflow the problem occurs. To be more exact, what you are describing is not "rust". Rust occurs in iron. The oxidation that occurs in Tin-Lead has been sometimes called "white rust". Either way, oxidation occur
Electronics Forum | Tue Feb 12 14:30:20 EST 2008 | rlpearson
Like most things - "it depends". There just isn't a simple formula for applying general air exchange rates. Your baseline should be doing some air quality (industrial hygiene) testing to see what types of exposures the workers have. THEN, you can
Electronics Forum | Wed Feb 20 08:57:13 EST 2008 | tonyamenson
We test for board cleanliness using an ionic tester. It's been my experience that if your board is clean you take away the possibility of growth even if the unit encounters moisture. We actaully had a problem where our wash lost pressure due to a mi
Electronics Forum | Tue Dec 16 11:41:26 EST 2008 | fredc
I think fuji and all the after market suppliers use stainless "hypo" tubing for the tips. It is made from 304 stainless which is normally nonmagnetic. In the process of forming this tubing to the hypo specs it is work hardened to 3/4 to full hardness
Electronics Forum | Wed Oct 01 12:14:32 EDT 2008 | marvl
Dear Sir, I'm a Mechanical engineer working on a Medical Park facility. I need to know how much a/c I need to provide for the following machine: MS 450 HF 500mA/150kV 40kW high freq. generator AEC - automatic exposure control TS 99RT Line
Electronics Forum | Tue Apr 07 15:36:15 EDT 2009 | gtemkin
Most of the conformal coating manufacturers recommend verifying the compatibility of their coating with the solder mask, so it's no surprise that occassionally there will be such issues. Are you sure your conformal coat is completely cured? If your
