Hi Donn - This comes down to a machine vision capability question. We are using HASL 1mm fiducials in virtually all applications - because the equipment will handle it. Many years ago, I had an "adapted robotic system" in place that would handle .125" solder coated fiducials, so we used them until we replaced that equipment. Regards - Kelly -----Original Message----- From: Steffen, Don E <[log in to unmask]> To: [log in to unmask] <[log in to unmask]> Date: Friday, September 24, 1999 2:13 PM Subject: [TN] Fudicial Shape >Technetters > >What is the best shape of fudicials relative to size and configuration? Also >if the board has HASL on all of the pads, can the fudicials be of different >material other than HASL? We are having a problem with reflective light >causing a lot of rejected boards. This is also causing down time. What is >the industry using for this technolgy. We have DEK 265 printers and Philips >and Siemens placement machines. > >Donn E Steffen >Senior Quality Engineer >VDO Control Systems >Auburn, IN 46706 >Phone (219)925-8887 >Fax (219)925-8710 >Email: [log in to unmask] > >############################################################## >TechNet Mail List 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://www.ipc.org/html/forum.htm) for additional >information. >If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or >847-509-9700 ext.5365 >############################################################## ############################################################## TechNet Mail List 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://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################