Sealbrite 230-10 was a marvellous solderable coating made by Lonco in Bensenville, IL, many years ago. This company was taken over by the Alpha/Cookson Group over 12 years ago and I don't know whether the product was discontinued. I believe it was a simple lacquer with a mixture of pure WW rosin and a synthetic polymer (possibly acrylic) in a toluol or xylol solution (flammable and toxic). It left a quick-drying very thin film that would preserve the solderability of copper under good storage for 6-18 months. I used tonnes of the great stuff when making guaranteed ultra-solderable bare copper boards in the late 1960s. Brian Charming Chan wrote: > Hello All, > > Does anyone help input something about surface finish SEAL BRITE COATING? I got a talk with pcb fab shop today and I was told that there was SEAL BRITE COATING available for pcb surface treatment. I know nothing about such surface finish and I'm quite curious. Thank you. > > Best Regards > Charming Chan > > --------------------------------------------------- > Technet Mail List provided as a service by IPC using LISTSERV 15.0 > 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 or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) > To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest > Search the archives of previous posts at: http://listserv.ipc.org/archives > Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 > ----------------------------------------------------- > --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 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 or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------