Cleaning circuit boards of solder flux residue

Sorry, but TSP works great in a dishwasher.

Reply to
krw
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Who gives a rat's rear about dishwashers? The point is that the land used for agriculture far outweighs the land in urban areas. But more importantly, it all goes into the *same* river! The water flowing by DC drains from the full 14,700 square miles, not just the area inside the beltway.

That may be. But phosphorous has nothing to do with the pollution that results in the warnings about eating fish.

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Rick
Reply to
rickman

Hi Joe, Can I ask what the maximum voltage is? I don't know much about high impedance circuits, but from previous threads I get the idea that it's a non-linear resistance. What works at 1- 10 Volts may fail at 100 - 1kV.

(1 G ohm is the biggest R I've used to date.)

George H.

Reply to
George Herold

I've seen a wall where the people carrying the casettes are in one space, and the process machines are on the other side, in a separate space. I'm not sure which side needs to be cleaner, but they are certainly different.

Things like this, built into a wall.

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John Larkin         Highland Technology, Inc 
picosecond timing   precision measurement  
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Reply to
John Larkin

Sure, fabs have been built that way forever. The dirty side of the wall is called the "tool core' or just 'core'.

Back in 1991-92, I spent a certain number of hours ripping apart wafer steppers in IBM East Fishkill to retrofit a better alignment system. They were Perkin-Elmer Censors, and we managed to improve the overlay to the point that they could use G-line litho for another process generation, IBM ATX-4 ECL, before switching over to I-line (365 nm). It was applied to 35 tools, and saved the company over a hundred million bucks in equipment. (My colleague and I got a nice pat on the head.)

Cheers

Phil Hobbs

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Dr Philip C D Hobbs 
Principal Consultant 
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Reply to
Phil Hobbs

They are talking maybe ten or twenty volts.

While 100 KV also needs clean, it needs far more.

Joe Gwinn

Reply to
Joe Gwinn

On Tue, 28 Jul 2015 09:35:28 -0400, Joe Gwinn Gave us:

100kV (small k), not only needs to be very clean (and baked free of water), but it needs to be immediately encapsulated after that.

And the actual HV area should have no solder mask. Bare board.

Reply to
DecadentLinuxUserNumeroUno

Solvent reflux cleaning.

Reply to
sean.c4s.vn

More commonly known as a vapor degreaser.

It will take the rosin off, but what about the ionic crud? Need hot water for that.

Joe Gwinn

Reply to
Joe Gwinn

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