I was interested in this question so I looked up the data sheets on both devices. The ATF-55143 can handle ESD strikes up to 200V (HBM) while the CM1213 starts conducting at +/-9V for ESD strikes to 8kV(HBM). I'd think you are covered with that combination. Regards, Charlie Anderson Sr. Electrical Engineer Micro Control Company (763) 277-9244 c.anderson@xxxxxxxxxxxxxxxx -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On Behalf Of Steve GullWing Sent: Tuesday, October 05, 2004 8:49 AM To: james.f.peterson@xxxxxxxxxxxxx; si-list@xxxxxxxxxxxxx Subject: [SI-LIST] Re: ESD Protection Of ATF-55143 Thank you James, Unfortunately the Agilent device is not able to handle the +/-9V it is exposed to before the ESD diodes clamp the voltage. Hence my problem. Regards Steve GullWing Ltd ----- Original Message ----- From: "Peterson, James F (FL51)" <james.f.peterson@xxxxxxxxxxxxx> To: <si-list@xxxxxxxxxxxxx> Sent: Tuesday, October 05, 2004 3:32 PM Subject: [SI-LIST] Re: ESD Protection Of ATF-55143 > Steve, > > I really don't know if this will help you since I am not familiar with the > ATF-55143, but I can't resist, so here goes : > > For digital logic devices, ESD protection devices are not suppose to turn > on > at the absolute maximum ratings of the device they're trying to protect. > They should turn on (start protecting) at some greater value. > The absolute maximum rating of a logic device is a DC value not an AC > (ESD) > limit. > The question might be better phrased : Can your ATF-55143 survive an ESD > pulse of +/- 9V? This is the limit it would have to survive before the ESD > protection device kicks on. If this were digital logic the answer would be > easily "yes". > > Jim > Honeywell > > -----Original Message----- > From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]On > Behalf Of Steve GullWing > Sent: Tuesday, October 05, 2004 10:10 AM > To: si-list@xxxxxxxxxxxxx > Subject: [SI-LIST] Re: ESD Protection Of ATF-55143 > > > Dear Si'ers, > I am using a ATF-55143 Single Voltage E-pHEMT Low Current Low > Noise device in an RF front end application. I need to make sure I am > complient with contact ESD to +/-8KV. The device has an absolute maximum > rating of +1V to -5V. Therefore the CM1213 I am using which is great as a > very low capacitance ESD device, but of no use, since its break down > voltage > > is +/-9V. > > Anybody got any ideas as to how to use the ATF-55143 device and ESD > protect > it without loading it with high capacitive ESD devices in my front end > application. > > Regards > Steve > GullWing Ltd > > ------------------------------------------------------------------ > To unsubscribe from si-list: > si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field > > or to administer your membership from a web page, go to: > //www.freelists.org/webpage/si-list > > For help: > si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field > > List FAQ wiki page is located at: > http://si-list.org/wiki/wiki.pl?Si-List_FAQ > > List technical documents are available at: > http://www.si-list.org > > List archives are viewable at: > //www.freelists.org/archives/si-list > or at our remote archives: > http://groups.yahoo.com/group/si-list/messages > Old (prior to June 6, 2001) list archives are viewable at: > http://www.qsl.net/wb6tpu > > ------------------------------------------------------------------ > To unsubscribe from si-list: > si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field > > or to administer your membership from a web page, go to: > //www.freelists.org/webpage/si-list > > For help: > si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field > > List FAQ wiki page is located at: > http://si-list.org/wiki/wiki.pl?Si-List_FAQ > > List technical documents are available at: > http://www.si-list.org > > List archives are viewable at: > //www.freelists.org/archives/si-list > or at our remote archives: > http://groups.yahoo.com/group/si-list/messages > Old (prior to June 6, 2001) list archives are viewable at: > http://www.qsl.net/wb6tpu > > ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu