Electronics Forum: level test (Page 1 of 39)

SAC copper level control

Electronics Forum | Thu Oct 05 12:52:34 EDT 2006 | Mario Scalzo, SMT CPE

Good afternoon! Typically, we normally recommend testing the pot, and adding either Sn/Ag or just Sn to keep it at bay. One nice thing about the solubility of Cu in Sn based alloys is that it should reach a theoretical upper limit of about 0.1%. I

electrical test

Electronics Forum | Thu Jul 27 15:59:36 EDT 2006 | russ

test at the bare board level consists of opens and shorts. It makes sure that all traces are hooked (connected) up to the appropriate place and they are not shorted to a non common conductor. Russ

Cleanliness test

Electronics Forum | Fri Jan 03 19:17:12 EST 2003 | Mike Konrad

Hi Richard My experience with R.O.S.E. testers has been positive with regard to detecting ionic contamination (even exceptionally low levels). As previously mentioned, a good R.O.S.E tester will be able to detect minuet levels of ionic contaminatio

Cleanliness test

Electronics Forum | Thu Jan 02 12:15:10 EST 2003 | Mike Konrad

Richard, With respect to the Resistivity of Solvent Extract (ROSE) test, the test solution is exceptionally aggressive. With the Zero-Ion for example, the test solution�s resistivity is 150 M-Ohms. Additionally, because test solution is made up of

Cleanliness test

Electronics Forum | Fri Jan 03 12:12:22 EST 2003 | richard

Good day and thanks for your comments Mike, What did I understood from your notes� 1) ROSE test (�extracting solution�) is probably good enough (with good equipment) to penetrate the space under my micro BGA. 2) I should test 2 parallel batches of

Contamination test

Electronics Forum | Mon Jul 30 21:03:44 EDT 2001 | davef

You should specify the level of res based on the effect of the res on the end-use of the product. J-STD-001 defines cleanliness requirements for ALL flux types, including water soluble and no-clean that you mention. 1 There is no equivalency betwee

Contamination test

Electronics Forum | Sun Jul 29 21:23:27 EDT 2001 | nifhail

When carry out the contamination test,do we measure for Chlorides on water soluble and No-clean fluxes? 1) What is the equivalent factor for machines developed to test the board cleanliness, Omega-meter vs Ionograph vs Zero-ion. 2) What values do we

Stencil lead contamination test

Electronics Forum | Tue Jan 20 10:00:25 EST 2015 | TM

Hello We are currently cleaning stencils from both process (PbSn and lead free) in the same cleaning machine. A customer is concerned about cross contamination of lead between stencils. Is there any test kit or tool that you can suggest to test the

Resistance value level of lead-free solder joint

Electronics Forum | Mon May 26 08:02:11 EDT 2003 | davef

Resistance: Tables of wire gauge often provide a resistance measure of some kind for each gauge. That way we can estimate the resistance of any length of wire we might be interested in. Calculating trace resistance is only slightly more complicated.

dynamic/static contamination test

Electronics Forum | Thu Nov 02 17:15:48 EST 2006 | Mike Konrad

Asoe, The systems you are describing are Resistivity of Solvent Extract (ROSE) Testers. These systems are available using one of two technologies, Static or Dynamic. Both systems use a calibrated test solution comprised of IPA and DI water. The t

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