John It would appear that no-one answered your question. So if it is not too late... How clean is clean is a great big topic. There was an interesting article in the Feb 99 issue of Precision Cleaning magazine written by people at Lockheed Martin that covers this subject well. This is a USA journal and if you need details, ask me. They basically found that with low stand-off components, you MUST use wash chemistry to lower surface tension of the water to get it underneath AND remove the contaminant. However, it involves power - (wash pressure) as well as solvent power (wash chemistry). Regards, Graham Naisbitt [log in to unmask] Concoat Ltd Phone: +44 1276 691100 Alasan House Fax: +44 1276 691227 Albany Park CAMBERLEY GU15 2PL UK -----Original Message----- From: John Gulley <[log in to unmask]> To: [log in to unmask] <[log in to unmask]> Date: 12 March 1999 17:24 Subject: [TN] RF PCMCIAs and Cleanliness >Address, > >We have an application where we are using OA Flux and Paste to process >RF PCMCIAs. The PCAs are thoroughly cleaned prior to test. I'm still >having test issues with RF PCMCIAs. > >If I remember correctly, I read an article that discussed cleanliness of >PCAs that are RF. If the PCA is not thoroughly cleaned, the organics >will wreak havoc on the RF tests. There are chemistries (saponifers) >available that will reliable remove the excess organics and provide >enough cleanliness to pass RF testing. > >CAN someone please provide some more light onto this issue or give me a >direction to pursue, e.g., contacts. Thanks. > >John > > > > > ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################