WRONG! We are not talking ESD here. This guy has an electrical problem. The voltages are not nearly as transient as static discharges. Anything greater that the junction voltage can reverse bias a semiconductor and blow it away. This guy can apply 24 volts to any random point on his circuit (the power-supply voltage in the Weller Iron he is using). > -----Original Message----- > From: TechNet [mailto:[log in to unmask]] On Behalf Of Dehoyos, Ramon > Sent: Tuesday, February 10, 2004 8:47 AM > To: [log in to unmask] > Subject: Re: [TN] iron tip potential > > > Pankaj: > That small potential difference will not damage > anything. The voltage needs to be well over 100 in order to > start being a problem for some devices. In my experience, > voltages over 1000 volts are the ones that do damages. Most > of new devices are designed to withstand ESD damage to some > extent. Perhaps some will disagree with me. > Regards, > Ramon > > > -----Original Message----- > > From: Blair K. Hogg [SMTP:[log in to unmask]] > > Sent: Tuesday, February 10, 2004 7:08 AM > > To: [log in to unmask] > > Subject: Re: [TN] iron tip potential > > > > I would say that they should be at the same potential. > > > > Have you tried to determine the source of the difference? > > > > Blair Hogg > > QA Manager > > GAI-Tronics Corp. > > > > >>> [log in to unmask] 02/10/04 04:27 AM >>> > > Dear all, hello > > > > My question about the potential deference between the > soldering iron > > tip > and > > the ESD grounded mat. I observed that it is about 20 to 30 > volts, is > > it > safe > > for ESD sensitive device? and is it mandatory to keep the > iron tip on > > same potential with ESD grounded mat. > > > > > > > > Pankaj Karnwal > > Jr. Engineer QA > > > > Barco Electronics System (P) Ltd. > > > > WWW.barco.com > > mailto:[log in to unmask] > > > --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e 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 or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 -----------------------------------------------------