Hi Kevin, I second Joyce's recommendation. A board we assembled for operation in a vacuum was constructed of polyimide "everything" to eliminate as many out-gassed contaminates as possible. If you are working closely with a PCB vendor get their help. They should have most of this information at their disposal. Good luck, Richard Hatano Tech. Mgr. Dallas Electronics Inc. -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Joyce Koo Sent: Thursday, October 06, 2011 10:06 AM To: [log in to unmask] Subject: Re: [TN] Soldermask recommendation Polyimide. -------------------------- Sent using BlackBerry ----- Original Message ----- From: Bob METCALF [mailto:[log in to unmask]] Sent: Thursday, October 06, 2011 11:11 AM To: [log in to unmask] <[log in to unmask]> Subject: Re: [TN] Soldermask recommendation Kevin, I am unfamiliar with the smoking requirement you mention. Can you expand on the need? Is it smoking during soldering or during some other step? Regards, Bob Metcalf Western Regional Manager Atotech USA Inc 1750 Overview Drive Rock Hill, South Carolina 29730 USA Mobile: 714-334-7667 e-mail: [log in to unmask] Internet: www.atotech.com Managing Director: Kuldip Johal This e-mail and any attachments hereto are business documents of Atotech USA Inc. and may contain CONFIDENTIAL OR PROPRIETARY BUSINESS INFORMATION. Unauthorized disclosure and/or use of information contained in this e-mail are prohibited. If you are not the intended recipient, you should dispose of it and not use, disseminate or copy this message or any other files transmitted with it. . From: "Glidden, Kevin" <[log in to unmask]> To: <[log in to unmask]> Date: 10/06/2011 06:40 AM Subject: [TN] Soldermask recommendation Sent by: TechNet <[log in to unmask]> Good Morning, We have a need to pass flammability, smoke, and toxicity testing for some products. PCB soldermask has been identified as one of the key contributors to the smoking. Does anyone know of a PCB soldermask that is UL94V0 but also low smoke generating? The two criteria are seemingly at odds, since the halides that create the non flammability also make the smoke... Thanks for the help! Kevin ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. 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