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
Electronics Forum | Wed Jan 27 23:29:28 EST 1999 | parag palshikar
| | 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
Electronics Forum | Thu Sep 17 10:52:40 EDT 1998 | Chrys
| I need an evaluation process to prove to a customer that our no-clean process does not leave excessive residue? Any ideas? Justin's right - you need to find out why there is hesitation about residue. Right now I make a board that has contacts for
Electronics Forum | Tue May 18 22:31:05 EDT 2004 | davef
Ionic cleanliness is pretty much meaningless, when discussing nc flux residues. If you do the good solder routine and measure the boards, you'll be in the out-house, because the water in your resistivity of solvent extract tester will turn the res o
Electronics Forum | Fri Jun 01 10:52:37 EDT 2012 | blnorman
Neither the Omega meter nor the IC are officially "destructive" tests, but everywhere I worked we treated them that way. The boards were scrapped after the test. The Omega meter can be tested at elevated temps, but the IC sample is extracted at ele
Electronics Forum | Tue Jul 31 13:55:27 EDT 2001 | mparker
Maintain DI water to 18 Meg Ohms resistivity. You can go down as low as 2 Meg ohms, in a pinch, but I would caution on what type of board you are running if trying to clean on 2 Meg ohm. Anything that is running an RF or high frequency circuit could
Electronics Forum | Thu Oct 26 17:53:32 EDT 2000 | Dave F
John: I�m here. On "what do ya think about that one!..."??? Mutha, that sounds rat�s rump [as Dennis Miller says] ugly. On some boards, we paste a cuppla chips on the break-away panels and then torque the chips from the board after cure. We use the
Electronics Forum | Wed Jun 10 23:26:09 EDT 1998 | Steve Gregory
| We use them, but we never thought about them. | WHAT ARE THEY? The hand lotion we provide for our operators. | BACKGROUND: Operators hands take a beating. They | 1 Work in a humidity controlled 35 to 50%RH environment that is drying | 2 Wash b
Electronics Forum | Thu Jun 11 09:09:12 EDT 1998 | Dave F
| | | We use them, but we never thought about them. | | WHAT ARE THEY? The hand lotion we provide for our operators. | | BACKGROUND: Operators hands take a beating. They | | 1 Work in a humidity controlled 35 to 50%RH environment that is drying
Electronics Forum | Thu Jun 11 09:05:50 EDT 1998 | Earl Moon
| | | We use them, but we never thought about them. | | WHAT ARE THEY? The hand lotion we provide for our operators. | | BACKGROUND: Operators hands take a beating. They | | 1 Work in a humidity controlled 35 to 50%RH environment that is drying
