Electronics Forum: de-ionized (Page 4 of 4)

Re: DENDRITES

Electronics Forum | Wed Aug 04 21:52:54 EDT 1999 | Dave F

We're getting field failures in a high impedance portion of the circuit. Think the unpopulated pc card has contaminates because we were able to grow dendrites by applying a 9 volt battery across the suspected pad, placed a drop of de-ionized water

Re: Exhausting of flux in reflow ovens

Electronics Forum | Fri May 14 00:16:28 EDT 1999 | Mike D.

Does anyone know of any industry guidelines for the exhausting of volatiles in reflow ovens? I've seen some numbers like 1,000ppm for the oven atmosphere, but is this typical? My concern is the volatiles in my WS629 solder paste may be attack

Re: DENDRITES

Electronics Forum | Thu Aug 05 06:29:18 EDT 1999 | Graham Naisbitt

We're getting field failures in a high impedance portion of the circuit. Think the unpopulated pc card has contaminates because we were able to grow dendrites by applying a 9 volt battery across the suspected pad, placed a drop of de-ionized w

Re: Exhausting of flux in reflow ovens

Electronics Forum | Fri May 14 15:03:19 EDT 1999 | lima

Does anyone know of any industry guidelines for the exhausting of volatiles in reflow ovens? I've seen some numbers like 1,000ppm for the oven atmosphere, but is this typical? My concern is the volatiles in my WS629 solder paste may be

White Hazing under the solder mask of a through hole board

Electronics Forum | Fri Nov 07 12:48:31 EST 2003 | rholland

I have seen in the last couple of months more boards with a white hazing under the solder mask. I ran a few tests on a board to determine the cause of the white hazing underneath the solder mask. First I confirmed, or at least I think I confirmed, t

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