FERROXCUBE DATA SHEET U20/16/7 U, I cores and accessories Supersedes data of September 2004 2008 Sep 01 Ferroxcube U, I cores and accessories U20/16/7 CORE SETS Effective core parameters SYMBOL 20.8 ± 0.6 PARAMETER VALUE UNIT Σ(I/A) core factor (C1) 1.21 mm−1 Ve effective volume 3800 mm3 Ie effective length 68 mm Ae effective area 56 mm2 m mass of core half ≈9 g 6.4 ± 0.4 8.3 ± 0.3 15.6 ± 0.2 7.5 0.25 MSA140 Dimensions in mm. Fig.1 U20/16/7 core half. Core halves AL measured on a combination of 2 U cores. AL (nH) µe 3C90 1900 ±25% ≈ 1950 U20/16/7-3C90 3C94 1900 ±25% ≈ 1950 U20/16/7-3C94 GRADE TYPE NUMBER 3C11 3100 ±25% ≈ 3000 U20/16/7-3C11 3E27 4800 ±25% ≈ 4600 U20/16/7-3E27 Properties of core sets under power conditions B (mT) at CORE LOSS (W) at H = 250 A/m; f = 25 kHz; T = 100 °C f = 25 kHz; ˆ = 200 mT; B T = 100 °C f = 100 kHz; ˆ = 100 mT; B T = 100 °C f = 100 kHz; ˆ = 200 mT; B T = 100 °C 3C90 ≥320 ≤ 0.46 ≤ 0.48 − 3C94 ≥320 − ≤ 0.36 ≤ 2.3 GRADE 2008 Sep 01 1313 Ferroxcube U, I cores and accessories U20/16/7 DATA SHEET STATUS DEFINITIONS DATA SHEET STATUS PRODUCT STATUS DEFINITIONS Preliminary specification Development This data sheet contains preliminary data. Ferroxcube reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. Product specification Production This data sheet contains final specifications. Ferroxcube reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. DISCLAIMER Life support applications These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Ferroxcube customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Ferroxcube for any damages resulting from such application. PRODUCT STATUS DEFINITIONS STATUS INDICATION DEFINITION Prototype These are products that have been made as development samples for the purposes of technical evaluation only. The data for these types is provisional and is subject to change. Design-in These products are recommended for new designs. Preferred These products are recommended for use in current designs and are available via our sales channels. Support These products are not recommended for new designs and may not be available through all of our sales channels. Customers are advised to check for availability. 2008 Sep 01 1314