OK. This is off topic (not about Protel) I am trying to determine if the Solder mask thickness that I am specifying is thick enough.
Here is what I specify: "Solder mask shall be applied to both sides of the pcb over bare copper. Solder mask shall meet requirements of IPC-SM-840B, Class 2, Type B1, liquid, photo-defined. Solder mask shall meet the cure requirements of IPC-SM-650, Method 2.3.23." We had a different PCB Manufacturer make some sample boards for us and I thought the Solder mask looked too thin. Then I went back to the boards for our preferred manufacturer and they did not look much better. I was able to put a multimeter probe on a via and the other probe on the trace from that via, and after scraping the probe across the trace twice I went through the solder mask and got a short. Does this sound like an acceptable Solder mask? Thanks for any input. Cam Andruik Harding Instruments 780 462-7100 [EMAIL PROTECTED] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/[email protected] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
