I am giving under some conditions of operation under which conformal coating is helpful. Rough seas and heavy winds create an aerosol of upto 50 ppm salt . i.e. 50 ppm salt suspended in air. as far inland as 10kms. If this air moves in and around the assembly and the temp.. changes to take this air volume below dew point - this will result in condensation of conductive electrolyte onto the assembly. a conformal coating may save you - I have separately mailed you some other leads I got from friends on TN re. Hv on PCBs and environment Anil Kher ----- Original Message ----- From: JBosserm <[log in to unmask]> To: <[log in to unmask]> Sent: Thursday, October 07, 1999 11:29 PM Subject: [TN] No subject given > My company is debating the value of conformal coating in our > > assemblies. We work with high voltages in non-sealed drawer > > assemblies. The environment is not too severe, it will be indoors but > > some areas have a fair enough amount of dirt in the air. > > > > The number one example we can think of is that the entire PC industry > > works without coatings, monitors in particular. Does anybody know > > where I can get my hands on some studies for or against coating? > > > > Jay Bosserman > > MCL Inc. > > ############################################################## > TechNet Mail List 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 web site (http://www.ipc.org/html/forum.htm) for additional > information. > If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or > 847-509-9700 ext.5365 > ############################################################## > ############################################################## TechNet Mail List 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 web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################