----- Original Message ----- From: Peter L. Peres To: Sent: Friday, January 12, 2001 1:44 PM Subject: Opinions spought on Electrostatic dissipation > Components are specced to withstand a certain amount of charge brought on > by people. The charge is usually specced to 2kV, 1nF I think (once). Some > parts manufacturers who care (like Philips) spec this in their databooks > (or used to). They have a model for this testing. 2kV, 1nF is W = C*U^2/2 > = 1E-9 * 4E6 * 0.5 = 2mJ, which is very little Body model is 10kV on 100 pf with a series resistance of 1500 ohms. Or at least it used to be many years ago. There are new specs out for ESD exposure, but I don't remember the spec number right off the top of my head. Wynn Rostek -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads