Return-Path: Received: (qmail 23764 invoked from network); 1 Feb 2001 12:34:22 -0000 Received: from unknown (HELO murphys-inbound.servers.plus.net) (212.159.14.225) by extortion.plus.net with SMTP; 1 Feb 2001 12:34:22 -0000 Received: (qmail 20501 invoked from network); 1 Feb 2001 12:37:13 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys with SMTP; 1 Feb 2001 12:37:13 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.16 #1) id 14OIsG-0002s1-00 for rsgb_lf_group-outgoing@blacksheep.org; Thu, 01 Feb 2001 12:30:04 +0000 X-MSMail-Priority: Normal Received: from tlvsca.vim.tlt.alcatel.it ([194.243.74.245]) by post.thorcom.com with esmtp (Exim 3.16 #1) id 14OIsF-0002rZ-00 for rsgb_lf_group@blacksheep.org; Thu, 01 Feb 2001 12:30:03 +0000 Received: from tlvk7v (tlvk7v.vim.tlt.alcatel.it [151.98.40.9]) by tlvsca.vim.tlt.alcatel.it (8.9.3+Sun/8.9.3) with SMTP id NAA10022 for ; Thu, 1 Feb 2001 13:28:23 +0100 (MET) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Date: Thu, 1 Feb 2001 13:19:21 +0100 From: "Claudio Girardi" Subject: LF: 3C85 To: rsgb_lf_group@blacksheep.org X-Mailer: Z-Mail Pro 6.2, NetManage Inc. [ZM62_16H] X-Priority: 3 Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from 8bit to quoted-printable by tlvsca.vim.tlt.alcatel.it id NAA10022 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Hi Mal, the Philips data sheet says: 3C85 SPECIFICATIONS SYMBOL CONDITIONS VALUE UNIT ui 25 °C; <10 kHz; 0.1 mT 2000 ±20% ua 100 °C; 25 kHz; 200 mT 5500 ±25% B 25°C; 10 kHz; 250 A/m >400 mT 100 °C; 10 kHz; 250 A/m >330 Pv 100 °C; 25 kHz; 200 mT <140 kW/m^3 100 °C; 100 kHz; 100 mT <165 rho DC; 25 °C approx. 2 ohm m Tc >200 °C density approx. 4800 kg/m^3 Note that the (initial) permeability goes from 1700 to 4000 in the range from 0°C to 100°C... 73 de IN3OTD, Claudio > Hi All > Does anyone know the permability and spec of 3c85 material? I cannot find > this info in any of my tech info books. > The T200 series seem very low like u10 powdered iron whereas the 3c5 ferrite > type are as high as u7000 > Seems important to get the right mix > g3kev