Ketan Thanks for your message. Just because you are running no-clean does NOT automatically mean that you must clean if you are coating. However, why are you now going to be coating? Is your existing process not reliable, so coating is being chosen to "fix" your problem? If so - this is NOT a good idea. If anyone out there suggests they have a coating that will OK to apply over your no-clean processed assemblies, do NOT believe them. The only practical way of establishing whether your product will be reliable is to run SIR testing on representative coupons. You might want to try Ion Chromatography, but this will only inform you of what is present, it will not tell you if the end product will be reliable - unless you have Brian Ellis analyse the results? You should take a read of the IPC-CC-830 and JSTD-001 documents before you do anything else. You really will have to run some tests - unless the risk is worthwhile? Take a look at my web site for more info - www.concoat.co.uk Regards Graham Naisbitt [log in to unmask] Web: www.concoat.co.uk Concoat Ltd Alasan House, Albany Park CAMBERLEY GU16 7PH Tel: +44 (0) 1276 691100 Fax: +44 (0) 1276 691227 -----Original Message----- From: Ketan Bhatt [mailto:[log in to unmask]] Sent: Monday, December 18, 2000 12:06 To: 'Graham Naisbitt'; 'TechNet' Subject: RE: Conformal Coating... I have a typical requirement. We normally use no clean paste and fluxes, but have to go for cleaning because we want to do conformal coating. Can any one please recommend me about any coating material which can be done directly w/o cleaning ? Best regards,, Ketan Bhatt -----Original Message----- From: Graham Naisbitt [SMTP:[log in to unmask]] Sent: Sunday, December 17, 2000 6:07 AM Subject: Re: Conformal Coating... Ken Contrary to Brian's comments, Coating can SAVE your business Save: Because you will have fewer field failures Save: Because field failure could very well put you out of business Save: Because if you design for coating, the cost is minimal v the benefit Save: Because you may be compelled, by law, to coat - now why do you suppose that is a mandate? Save lives! - Circuits that are safety critical such as ABS, Air Bag or Avionics systems, or weapons systems - where did my nuclear missile go? How about utilities such as gas, electricity and water meters that often have to survive for 20 years - GUARANTEED! I might also point out - and others will correct me if I am wrong but - an automobile could be guaranteed for more than 10 years if only the electronics systems would last that long. Come on Brian - your comments are not entirely fair. It is true to say, no-one wants to coat but it need not be such a painful experience - what price safety? Is $0.05 per assembly a high price to pay? - Play-station, TV, Mobile phone, Computer OK, don't coat, after all, they would prefer you to replace the unit. I hope this helps you Ken but if you would like more, let me know Regards Graham Naisbitt [log in to unmask] Web: www.concoat.co.uk Concoat Ltd Alasan House, Albany Park CAMBERLEY GU16 7PH Tel: +44 (0) 1276 691100 Fax: +44 (0) 1276 691227 -----Original Message----- From: TechNet [mailto:[log in to unmask]]On Behalf Of Ken Patel Sent: Saturday, December 16, 2000 01:29 To: [log in to unmask] Subject: [TN] Conformal Coating... Guys, What are the pros and cons of Conformal Coating on PWAs? Who are vendors in San Jose Bay area? re, ken patel ---------------------------------------------------------------------------- ----- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------- ----- --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------