Dear Technet, Would like to determine if there is a specification to check for the surface contact resistant of the board when a metal dome (form the keypad) is pressed on top on the boards. The resistance tolerance should be well around +/-0.001 ohm. The reason is to address any intermittent contact (like increse in resistnace) if there is an oxide layer or contamination on the boards. Appreicate any inputs. Regards, YH Koh --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d 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 delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------