ionic contamination test

"ionic contamination test" search results in the Electronics Forums



47 results found for "ionic contamination test" in the Electronics Forums

Order by: Relevancy |   Date

Flux residues found after assembly process (Clean process)

Jan 8, 2016 | / Ionagraph http://scscoatings.com/equipment/ionic-contamination-test/ A low cost visual test is offered by Zestron. They make a flux test solution whereby a small drop of chemical is deposited onto

Effects of Silicone on Ionic Contamination Testing

Oct 22, 2013 | Effects of Silicone on Ionic Contamination Testing Effects of Silicone on Ionic Contamination Testing Dear Lord, We have had similar challenges with customer requirements related to ionic testing. You have determined that you cannot get a reliable result from testing at the stage where the adhesive has been applied. That option is out

Effects of Silicone on Ionic Contamination Testing

Oct 18, 2013 | Effects of Silicone on Ionic Contamination Testing Effects of Silicone on Ionic Contamination Testing You might try testing prior to using the Silicone if possible. Also you might try to qualify your cleaning process rather than the individual board. Clean an unrelated assembly and test it in your Ionagraph. Assuming it passes, Clean your subject

Effects of Silicone on Ionic Contamination Testing

Oct 17, 2013 | Effects of Silicone on Ionic Contamination Testing Effects of Silicone on Ionic Contamination Testing Hello. We are building a CCA which has a silicone-based adhesive whose purpose is to bond the bottoms of multiple LED displays to heat sinks. Our customer wants the CCA to be tested for ionic residues per J-STD-001, but we are hesitant to test the CCA due to this silicone. Our facility uses an Ionograph 500M for ionic contamination testing. Our factory's testing prodedure forbids placing a CCA containing silicone into the test cell, since the silicone will contaminate the test solution. I cannot find any information on why this happens

Mix of Lead free & Leaded washing in same machine

Aug 27, 2012 | level test. For confirmation sake we did ionic contamination test on few boards and it all failed the ionic test. So i'm worried do the cleaning process using the same machine of both the chemistry (leaded with clean flux & lead free with no clean flux) will actually affect the ionic reading of the PCBA

Conformal Coat over No-Clean

Jun 30, 2010 | Conformal Coat over No-Clean Tim, try and incorporate an inline wash system. We use one with a surfactant and it cleans the "NO CLEAN" fluxes well. If you dont have an inline system, you can manual clean the boards with an surfactant and IPA. You can also do an ionic contamination test to ensure

Mysterious reflow problem

Sep 3, 2009 | in the middle of it with strange flux residues gathering in ball shape - but we don't see any problem with profile temperatures we completed : - ionic contamination tests on a bare board compared with other supplier that has no problem (no evidence) we plan to do : - use different oven (more advanced & more

Looking for ionic contamination test lab in Taiwan

Feb 4, 2009 | Looking for ionic contamination test lab in Taiwan Looking for ionic contamination test lab in Taiwan I'm looking for test labs in Taiwan that are capable of performing ionic contamination testing on small to medium sized SMT boards. I'm interested in both ion chromatography and ROSE test methodologies. Is anyone aware of any labs performing

Ionic Contamination Tester Concentration Monitoring

Sep 11, 2008 | Ionic Contamination Tester Concentration Monitoring We have an Ionic Contamination Testing system but short of having a monitoring record for the chemical concentration. What we have is a monthly maintenance check of the concentration and annual check and calibration of the chemicals. We seldom use

Cleaning procedure when WS609 flux is used

Jan 29, 2008 | beef it up again if required. Ionic contamination testing is readilly available.

Cleanning no clean residu

Oct 19, 2007 | you can prove out the efficiency of not cleaning the no-clean operations by a. conducting ionic contamination testing, and b. conducting accelerated life-cycle testing without

Ionic Contamination Tests

Sep 29, 2007 | Ionic Contamination Tests Ionic Contamination Tests the vary results might be from following issues.. the co2 during the test the during time for this testing... the manual testing method is conductivity measurement however the bulk contamination tester like omega is resistance measurement (i remember) the latter one

Ionic Contamination Tests

Sep 28, 2007 | Ionic Contamination Tests Ionic Contamination Tests Just a shame that the HASL fluids that are used contain Hydrobromic or hydrochloric acids or a mixture of the two and are full of strong wetting agents that are NON IONIC so the IC test results mean very little as they are checking for Ionics only. PCB Extraction with IPA

Ionic Contamination Tests

Sep 25, 2007 | Ionic Contamination Tests Ionic Contamination Tests We vote for: IPC-TM-650 2.3.25.1, solvent: 80�C, extract time: 60 minutes, hold time: 30 minutes or until room temperature. Listen, it really doesn't matter which method you decide to use. IPC-TM-650 2.3.25 is a process control method. It's more important that you

Ionic Contamination Tests

Sep 25, 2007 | Ionic Contamination Tests Ionic Contamination Tests your comments will be appreciated, please; IC tests have been performed on two kind of Raw PCBs (HASL) samples by adopting three different methods : First Sample (supllier A) - Omegameter 600 SMT, solvent=40�C: extratcing time 10 min result = 0.2 ugr NaCl/ cm2 (average

DI water testing?

Aug 28, 2007 | reduced water spots and increased cleaning quality after Culligan services the system. I don't produce boards for anyone that requires high-levels of ionic contamination testing; so I don

dynamic/static contamination test

Nov 2, 2006 | contamination. The cleaner a test solution stays during a test, the more sensitive the test. Years ago, the US Navy (under the auspices of the EMPF) conducted a study entitled �An In depth Look at Ionic Contamination Testing� (cited by Dave F). This study compared static and dynamic testing technologies

PCB cleanliness test house in Malaysia/Singapore

Nov 17, 2004 | PCB cleanliness test house in Malaysia/Singapore Are you looking for Ionic Contamination Test?

Ionograph or Omegameter

Nov 1, 2004 | Ionograph or Omegameter Hi Guys, Maybe you could help me with the above. We are doing IPC Class 3 products and would like to know more about the difference between the 2. We have an Omegameter, do we need an Ionograph too? Which one between the 2 is effective in Ionic Contamination Testing

Ionic Contaminate Testing (time or auto terminate)

Sep 2, 2004 | Ionic Contaminate Testing (time or auto terminate) Ionic Contaminate Testing (time or auto terminate) Hi -K We are a manufacturer of ionic contamination testers (not yours). In most cases, automatic mode is appropriate. In some instances however, you may need extra time to �release� entrapped contamination from the sample. Automatic mode

Ionic Contaminate Testing (time or auto terminate)

Sep 2, 2004 | Ionic Contaminate Testing (time or auto terminate) Ionic Contaminate Testing (time or auto terminate) Hi: I am wondering what others are doing that use a Static Ionic contaminate test (e.g. Ionograph/Alphametals) in relation to time. Our Ionograph has the option of setting a test time, or setting it to auto-terminate when there is no change

Electromigration Testing

Aug 18, 2004 | ug/in^2 although affected yields thus, can't reduce amount much more. - both groups passed the SIR test. - I am also told that the test method Trace Labs performed only applies to PCB boards and not PCBA? If so, would that also mean that the spec. does not apply? The ionic contamination test

Corrosion

Oct 7, 2003 | this may not be the answer. Omegameter testing takes 10-15 minutes per unit if memory serves. On top of this, the DI H2O and IPA

Corrosion

Oct 6, 2003 | Corrosion If the flux is already eating thru Cu it must have been some time since the boards were soldered with the OA flux. Ionic contamination testing (with OmegaMeter or IonoGraph)can be done to find contaminated boards and cleaning the boards can be done as well, but I feel its too late

Whitish Solder Joint

Apr 4, 2003 | pads only, solder mask only, every where, etc.] * What is the scope and extent of the problem? * What is your process, process materials, board fabrication, and process settings? Q2: Why do some white residues pass ionic

Whitish Solder Joint

Apr 4, 2003 | souble paste with Aqueous Cleaner >10Mohm DI washing. On the paste supplier recommendation, we sent sampling boards for Ionic Contamination test with specs <14NaCl/Sq.inch. We find the results not satisfactory to give any confidence in functional cleaniness of the boards. Reason is boards with really HEAVY white residue (almost crystal like) can still pass the Ionic contamination test with reading of 11.1NaCl/sq.in, whereas boards with faint traces of white in the solder joint (only) itself reads as 19.2NaCl/sq.inch. Any comments from experienced qualifiers of such Ionic contamination tests to gain

Inline Washers

Mar 9, 2003 | Inline Washers Definitly evaluate the TD washer smt 324 / 318. I have two units and they have been fantastic from a maintenance point of view. Small, quiet and easy to maintain. I am in the middle of cleaning capability and ionic contamination testing as we speak. So, I can not comment on its

omega meter

Mar 6, 2002 | the halides in the wash solution. Ion chromatography and surface insulation resistance are two other measures to consider. Personally, if I had a choice between ionic contamination testing and SIR testing (assuming both competently done), I would choose the SIR testing as the bottom line of whether a

DENDRITES

Aug 9, 1999 | cleaning process before coating. As dendrites are always an ionic function, an ionic contamination test would be a useful process control test of the cleaning. This may be complemented by an SIR test for qualification, but this is unsuitable for process control. The latter could reveal the presence of some

Cleanliness Testing/Conformal Coating

May 10, 1999 | conformal coating supplier and tell them what kind of flux you're using. They'll advise you on whether you'll have adhesion or incompatibility problems. Also, you may want to get your boards tested for SIR/ionic contamination testing after they've been through your cleaning process (just to be on the safe

Re: white residue

Feb 10, 1999 | Testing. Check the archives on this. | | | | | | 1 Ionic contamination testing is like washing no-clean boards, as Graham Naisbitt says. | | | 2 SIR testing will tell you if the board will be reliable, but will not tell you about the type and level of contaminants | | | 3 Ion chromatography will tell

Re: white residue

Jan 29, 1999 | the archives on this. | | | | 1 Ionic contamination testing is like washing no-clean boards, as Graham Naisbitt says. | | 2 SIR testing will tell you if the board will be reliable, but will not tell you about the type and level of contaminants | | 3 Ion chromatography will tell you what is on your board

Re: white residue

Jan 28, 1999 | . | | Contamination Testing. Check the archives on this. | | 1 Ionic contamination testing is like washing no-clean boards, as Graham Naisbitt says. | 2 SIR testing will tell you if the board will be reliable, but will not tell you about the type and level of contaminants | 3 Ion chromatography will tell you what

Re: white residue

Jan 27, 1999 | -clean fluxes "go white" in water. | | Contamination Testing. Check the archives on this. | | 1 Ionic contamination testing is like washing no-clean boards, as Graham Naisbitt says. | 2 SIR testing will tell you if the board will be reliable, but will not tell you about the type and level of contaminants | 3

Re: white residue

Jan 27, 1999 | the archives on this. 1 Ionic contamination testing is like washing no-clean boards, as Graham Naisbitt says. 2 SIR testing will tell you if the board will be reliable, but will not tell you about the type and level of contaminants 3 Ion chromatography will tell you what is on your board and its level

Batch Cleaners

Dec 9, 1998 | the most common are high

Prove no-clean is clean

Sep 17, 1998 | but most no-clean people don�t use ionic contamination testing, because: | 1 They get terrible readings, mostly from relatively weak organic acids, instead of the halides and sulfate etc that they really want to measure. | 2 Their boards end-up with ugly looking white solder connections, after soaking in 50/50 or 75/25 IPA/DI water. As Graham Naisbitt says: Ionic contamination testing is a cleaning process and no-clean means no

Prove no-clean is clean

Sep 17, 1998 | but most no-clean people don�t use ionic contamination testing, because: 1 They get terrible readings, mostly from relatively weak organic acids , instead of the halides and sulfate etc that they really want to measure. 2 Their boards end-up with ugly looking white solder connections, after soaking in 50/50 or 75/25 IPA/DI water. As Graham Naisbitt says: Ionic contamination testing is a cleaning process and no-clean means no-clean. (or words

Prove no-clean is clean

Sep 17, 1998 | ? Is it a future testibility concern? etc. If it's activity, put it through ionic contamination testing and show them there is nothing to worry about or subject the boards to some type of unfriendly environment. 85 degrees at 85% humidity for 4 weeks and check functionality / contamination afterwards

reliability of epoxy

Aug 7, 1998 | of the voids and blow holes. That entrapped flux WILL NOT BE REMOVED IN THE WASH AND IT'S VERY LIKELY THAT IONIC | CONTAMINATION TESTING WON'T EVEN PICK IT UP!!! Now that assembly with the trapped flux makes it into the field and fails out there because the OA ate through the chips. Talk to Federal Express

reliability of epoxy

Aug 6, 1998 | of the voids and blow holes. That entrapped flux WILL NOT BE REMOVED IN THE WASH AND IT'S VERY LIKELY THAT IONIC CONTAMINATION TESTING WON'T EVEN PICK IT UP!!! Now that assembly with the trapped flux makes it into the field and fails out there because the OA ate through the chips. Talk to Federal Express

Approach To Contamination Testing Of PCBs

May 27, 1998 | | | | forget what I just wrote. I just reread it and confused myself. it's been a long week!! Use the ionic

Approach To Contamination Testing Of PCBs

May 27, 1998 | | | forget what I just wrote. I just reread it and confused myself. it's been a long week!! Use the ionic contamination test to verify

Approach To Contamination Testing Of PCBs

May 15, 1998 | | | Justin | Dave, | forget what I just wrote. I just reread it and confused myself. it's been a long week!! Use the ionic contamination test to verify that your cleaner is working properly

Approach To Contamination Testing Of PCBs

May 15, 1998 | | Justin Dave, forget what I just wrote. I just reread it and confused myself. it's been a long week!! Use the ionic contamination test to verify that your cleaner is working properly. I don't think it should be used

Approach To Contamination Testing Of PCBs

May 15, 1998 | ? | Dave Dave, Yes. Do the ionic contamination testing. How do you know if your oven is functioning properly. Testing your suppliers raw fabs is pretty labor intensive for not much information. I wouldn't recommend it. If you start seeing solderability problems, check it out. If you are qualifying a

Approach To Contamination Testing Of PCBs

May 14, 1998 | testers, dynamic and static. The EMPF study entitled "An in Depth Look at Ionic Contamination Testing" (RR0013) seems to indicate a preference towards dynamic-based systems. Ionic Contamination Tester Brands Include: Zero-Ion (Manufactured by Aqueous Technologies) Ionograph (Manufactured

PCB equipment

Rework Training Materials