And if you decide to design product to survive zapped connector pins Motorola's dual switching diode MMBD7000LT1, SMT 3-pin clamping device can reduce direct hits to the managable levels. This useful device has maximum surge impedance of only 0.5 Ohms and maximum capacitance of only 1.5 pF.
Mirko Matejic email: mmatejic@foxboro The Foxboro Company tel: (508) 549-3185 ---------------------------------- From: [email protected] List-Post: [email protected] Date: Mon, 22 Apr 96 09:09:48 -0700 Subject: Re: ESD testing on exposed connector pins To: [email protected], "SIM::"@msim.co.uk Cc: [email protected] Hello Alan, You assume two things: 1) test houses will zap connectors, and 2) all manufacturers use test houses for EMC Directive compliance In the United States most manufacturers self declare compliance to the EMC Directive unless they take the TCF route and work with a competent body. Do all manufacturers zap connectors? Your guess is as good as mine. Regards, Ron Wellman +============================================================+ |Ronald R. Wellman |Corporate Quality Department| |Hewlett-Packard Company |External Product Regulations| |Product Processes Organization |Voice : 415-857-6059 | |1501 Page Mill Road, MS 5UL |FAX : 415-857-6340 | |Palo Alto, California 94304 USA|E-Mail: [email protected] | +============================================================+ | "Common sense is the collection of prejudices acquired by | | age eighteen." - Albert Einstein | +============================================================+ ____________________________ Reply Separator ____________________________ Subject: Re: ESD testing on exposed connector pins Author: Non-HP-owner-emc-pstc ([email protected]) at HP-PaloAlto,shargw3 List-Post: [email protected] Date: 4/19/96 10:05 AM Recently Ron Wellman wrote: > I believe that everyone contributing to this thread knows that zapping > pins of exposed connector pins is almost always a guaranteed failure. > Whether you fix it or not is a business decision, .... > >From a European point of view, I would have thought that if the test house did such a test (zapped the pins) and it failed, then you didn't get your Certificate of Conformity (or whatever), which means no CE Mark, which means "no can sell", which is not much of a business decision !!! Or am I being simplistic (or even dense !)? Regards, ---------------------------------------------------------------- Alan Hudson EMC/EW Specialist Marconi Simulation (Scotland, UK) email1 [email protected] email2 [email protected] ----------------------------------------------------------------
