Good Morning All, I love the concept of parylene - vapor dep. is close to my heart but we had trouble when some cards were handled roughly and scrapped the coating off. They came back from the field very quickly. The solution was to use a secondary coat with better mechanical properties but the customer wasn't interested in sticking with parylene unfortunately. Recently, I got a CC manufacturer recommendation to use a double coat - urethane basecoat and a silicone overcoat. Hans Integrity First - Service Before Self - Excellence in All We Do ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Hans M. Hinners Electronics Engineer Warner Robins - Air Logistics Center (WR-ALC/LUGE) 226 Cochran Street Robins AFB GA 31098-1622 mailto:[log in to unmask] Com: (478) 926 - 5224 Fax: (478) 926 - 4911 DSN Prefix: 468 -----Original Message----- From: Chris Almeras [mailto:[log in to unmask]] Sent: Thursday, March 07, 2002 8:28 AM To: [log in to unmask] Subject: Re: [TN] Conformal coating: high humidity environment. I would personally go with a one part urethane. We have coated assemblies used in an "oceanside" humidity application, and have had good results from the Humiseal line of urethanes. Chris Almeras -----Original Message----- From: Bissonnette, Jean-Francois [mailto:[log in to unmask]] Sent: Wednesday, March 06, 2002 9:41 AM To: [log in to unmask] Subject: [TN] Conformal coating: high humidity environment. Hi all, What type of coating should be used when equipment is to be used in high humidity environment (near sea water)? Thanks in advance! Jean-François Bissonnette Vérificateur, Contrôle de la Qualité Électronique Produits et Procédés Vapor Rail Inc. 10655 Henri-Bourassa O. St-Laurent, Qc H4S 1A1 (514) 335-4200 x2021 (514) 335-4231 fax <<Bissonnette, Jean-Francois.vcf>> WABTEC CORPORATION CONFIDENTIALITY NOTE The content contained in this e-mail transmission is legally privileged and confidential information intended only for the use of the individual or entity named herein. If the reader of this transmission is not the intended recipient, you are hereby notified that any dissemination, distribution, or copying of this transmission is strictly prohibited. ------------------------------------------------------------------------ --------- 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 e-mail to [log in to unmask]: SET Technet NOMAIL To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest 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 e-mail to [log in to unmask]: SET Technet NOMAIL To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest 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 e-mail to [log in to unmask]: SET Technet NOMAIL To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest 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 ---------------------------------------------------------------------------------