Keep the conformal coating -- with those temperature variances, you could have big trouble with an uncoated board. That is unless you have a hermetically sealed unit. What are you masking, mating connectors/board guides/adjustment screws? ______________________________ Reply Separator _________________________________ Subject: Fwd: conformal coating Author: [log in to unmask] at SMTPpost1 Date: 9/19/96 2:57 PM --------------------- Forwarded message: From: [log in to unmask] (Mark Sattel) Resent-from: [log in to unmask] To: [log in to unmask] Date: 96-09-19 12:40:03 EDT Sirs: I am presently investigating the need for conformal coatings on our printed circuit assemblies. Do you have any literature that discusses the relative merits and disadvantages? To date, our company has conformal coated 100% of our PCAs. But the cost of masking, spraying, and unmasking are staggering. My first instinct was to eliminate the coating except in high heat, high humidity environments. Our operating environments vary from freezing cold to hot and humid. Any information that you can supply will be greatly appreciated. Sincerely, Mark Sattel Datron World Communications, Inc 304 Enterprise St. Escondido, CA 92029 (619)747-1079 ext 208 FAX (619)747-2625 E-mail [log in to unmask] *********************************************************************** * The mail list is provided as a service by IPC using SmartList v3.05 * *********************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * *********************************************************************** *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * *************************************************************************** *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * ***************************************************************************