Mr. Mullet, Type B is photoimageable (dry film [B2] or LPI[B1]), while type A is screened. George Toman Circuit Center Inc. ---------- > Dear TechNetters, > > We have been specifying, on our Fab Drawings, the use of "Type B" > soldermask. I am under the assumption that this "Type B" is LPI, and "Type > A" is screened soldermask. Is this correct? Where can I find these "types" > defined. As far as I know there's nothing defined in IPC-SM-840C. > > Thanks for you help. > > Mr. LaVern Mullet > Thomas & Betts > > ################################################################ > TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c > ################################################################ > To subscribe/unsubscribe, send a message to [log in to unmask] with following > text in the body: > To subscribe: SUBSCRIBE TechNet <your full name> > To unsubscribe: SIGNOFF TechNet > ################################################################ > Please visit IPC web site (http://jefry.ipc.org/forum.htm) for additional > information. > For the technical support contact Dmitriy Sklyar at [log in to unmask] or > 847-509-9700 ext.311 > ################################################################ > > ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC web site (http://jefry.ipc.org/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ################################################################