I have a requirement for a very high insulation resistance (IR) using some reed relays. We have the relays in hand, and they test at 10e12 or better ohms when open. Anybody have any idea what we could expect for IR if mounted on a circuit board. Assume a clearance of about 3/8" between leads. -- Bob Ammerman RAm Systems -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist