Hi Victor, you can find also useful infos on IPC-SM-840 and IPC-HDBK-840. Gabriele -----Messaggio originale----- Da: TechNet [mailto:[log in to unmask]] Per conto di Wayne Thayer Inviato: giovedì 9 febbraio 2017 21:47 A: [log in to unmask] Oggetto: Re: [TN] R: [TN] Solder mask Hi Victor- Yes, soldermask should be completely impervious to every chemical known, unless I want to remove it and then I want a secret combination where it just sluffs off, leaving the board ready to coat again. It also needs to be completely non-toxic, non-cancerous. Easy to image and develop with non-hazardous chemistries which have no environmental issues. Apply in any thickness from 5 microns to 150 microns and it images and cures perfectly. Semi-gloss or flat so it doesn't hurt AOI. Any color. A perfect dielectric - no pinholes. Great scratch resistance. Blocks moisture ingress into the board. AND CHEAP. To quote Big Audio Dynamite: "....And if you ain't ill, it'll fix your car!" Wayne -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of SALA GABRIELE Sent: Thursday, February 09, 2017 12:37 PM To: [log in to unmask] Subject: [TN] R: [TN] Solder mask Kind ok SM, thickness and correct polymerization, make the difference against solvents ( which kind of solvents?) reaction... Gabriele -----Messaggio originale----- Da: TechNet [mailto:[log in to unmask]] Per conto di [log in to unmask] Inviato: giovedì 9 febbraio 2017 20:58 A: [log in to unmask] Oggetto: [TN] Solder mask Fellow TechNetters; Should the PWB/PCB solder mask be IMPERIVIOUS to a wide range of process solvents? What is the temperature break down of solder mask? Victor, --- Questa e-mail è stata controllata per individuare virus con Avast antivirus. https://www.avast.com/antivirus