HI Anshu, By board capacitance if you mean the trace capacitance then the approximation figures are 2-3pF/inch. Regarding the socket, the capacitance figures can be obtained from the socket manufactures or an Package simulation model provided by the manufacturer. You can still look for an equivalent circuit model of the socket to have some ideas. Regards, Harjeet. -----Original Message----- From: Anshu VIJ [mailto:anshu.vij@xxxxxx]=20 Sent: Friday, December 26, 2003 2:36 PM To: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] Approx. value of board and socket capacitance=20 Hi, Can anybody gives me an idea about the approx. value of board and socket parasitic capacitance? T&R anshu vij ------------------------------------------------------------------ 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 technical documents are available at: http://www.si-list.org List archives are viewable at: =20 //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 =20 ------------------------------------------------------------------ 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 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