FERROXCUBE DATA SHEET FRM21/4/12 Frame and Bar cores and accessories Supersedes data of September 2004 2008 Sep 01 Ferroxcube Frame and Bar cores and accessories FRM21/4/12 CORE SETS Effective core parameters SYMBOL PARAMETER VALUE UNIT Σ(I/A) core factor (C1) 5.06 mm−1 Ve effective volume 312 mm3 Ie effective length 40 mm Ae effective area 7.9 mm2 Amin minimum area 5.7 mm2 m mass of frame ≈ 1.5 g m mass of bar ≈ 1.0 g 0.5 max. handbook, halfpage 3.5 ± 0.1 1.2 ± 0.1 8.9 11.8 ± 0.2 ± 0.25 7.0 ± 0.1 16.2 ± 0.3 CBW566 21 ± 0.2 Dimensions in mm. Fig.1 FRM21/4/12. Ordering information for bar cores GRADE TYPE NUMBER 3C90 BAR22/2/6-3C90 3C91 BAR22/2/6-3C91 21.8 ±0.3 handbook, halfpage 5.5 ±0.2 1.8 ±0.1 CBW538 Dimensions in mm. Fig.2 BAR22/2/6. 2008 Sep 01 893 Ferroxcube Frame and Bar cores and accessories FRM21/4/12 Frame cores for use in combination with matching bar cores AL measured in combination with bar core. AL (nH) µe AIR GAP (µm) 3C90 400 ±25% ≈ 1610 ≈0 FRM21/4/12-3C90 3C91 470 ±25% ≈ 1890 ≈0 FRM21/4/12-3C91 GRADE TYPE NUMBER Properties of Frame and Bar combinations under power conditions B (mT) at CORE LOSS (W) at H = 250 A/m; f = 10 kHz; T = 100 °C f = 25 kHz; ˆ = 200 mT; B T = 100 °C f = 100 kHz; ˆ = 100 mT; B T = 100 °C 3C90 ≥320 ≤ 0.034 ≤ 0.037 − − 3C91 ≥320 − − ≤ 0.020 ≤ 0.14 GRADE 2008 Sep 01 894 f = 100 kHz; ˆ = 100 mT; B T = 60 °C f = 100 kHz; ˆ = 200 mT; B T = 60 °C Ferroxcube Frame and Bar cores and accessories FRM21/4/12 COIL FORMERS General data PARAMETER SPECIFICATION Coil former material liquid crystal polymer (LCP), glass-reinforced, flame retardant in accordance with “UL 94V-0” ; UL file number E54705(M) Pin material copper-tin alloy (CuSn), tin (Sn) plated Maximum operating temperature 155 °C, “IEC 60085”, class F Resistance to soldering heat “IEC 60068-2-20” , Part 2, Test Tb, method 1B, 350 °C, 3.5 s Solderability “IEC 60068-2-20”, Part 2, Test Ta, method 1: 235 °C, 2 s 8.2 15.9 5.75 0.7 1.3 2.75 handbook, full pagewidth 4.6 2 0.4 27.7 ±0.2 CBW547 29.15 ±0.2 24.7 ±0.15 0.55 1.5 (x6) 2.6 2 11.7 0.4 0.38 (x5) Dimensions in mm. Fig.3 SMD coil former for FRM21/4/12. Winding data and area product NUMBER OF SECTIONS NUMBER OF SOLDER PADS WINDING AREA (mm2) WINDING WIDTH (mm) AVERAGE LENGTH OF TURN (mm) 7 8 2.3 + 6 × 1.35 2.6 + 6 × 1.5 21 2008 Sep 01 895 AREA PRODUCT Ae x Aw (mm4) TYPE NUMBER 18.2 + 6 x 10.7 CPHS-FRM21/12-7S-8P Ferroxcube Frame and Bar cores and accessories FRM21/4/12 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 01 896