FERROXCUBE DATA SHEET ER32/6/25 Planar ER cores and accessories Supersedes data of September 2004 2008 Sep 01 Ferroxcube Planar ER cores and accessories ER32/6/25 CORE SETS Effective core parameters SYMBOL PARAMETER handbook, 2.9 +0 halfpage VALUE Σ(I/A) core factor (C1) 0.270 mm−1 Ve effective volume 5400 mm3 Ie effective length 38.2 mm Ae effective area 141 mm2 Amin minimum area 121 mm2 m mass of core half ≈ 16 g 6.0 ± 0.127 −0.25 UNIT 32.1 +0.55 −0.45 27.2 ± 0.4 12.4 ± 0.15 25.4 ± 0.4 MFP075 R1.0 (4×) Dimensions in mm. Fig.1 ER32/6/25 core half. Core sets for general purpose transformers and power applications Clamping force for AL measurements, 50 ± 20 N. AL (nH) GRADE AIR GAP (µm) µe TYPE NUMBER 3C92 5700 ± 25 % ≈ 1220 ≈0 ER32/6/25-3C92-S 3C93 6600 ± 25 % ≈ 1420 ≈0 ER32/6/25-3C93-S 3C95 9640 ± 25 % ≈ 2080 ≈0 ER32/6/25-3C95-S 3C96 7160 ± 25 % ≈ 1540 ≈0 ER32/6/25-3C96-S 3F3 7160 ± 25 % ≈ 1540 ≈0 ER32/6/25-3F3-S 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 = 100 kHz; ˆ = 100 mT; B T = 100 °C f = 100 kHz; ˆ = 200 mT; B T = 25 °C f = 100 kHz; ˆ = 200 mT; B T = 100 °C f = 400 kHz; ˆ = 50 mT; B T = 100 °C f = 500 kHz; ˆ = 50 mT; B T = 100 °C 3C92 ≥ 370 ≤ 0.45 − ≤ 3.0 3C93 ≥ 320 3C95 ≥ 320 − 3C96 ≥ 340 3F3 ≥ 300 GRADE 1. − − 3.0(1) − − ≤ 3.5 ≤ 3.33 − − ≤ 0.3 − ≤ 2.2 − ≤ 1.9 ≤ 0.65 − − ≤ 1.0 − ≤ − 0.45(1) Measured at 140 °C. 2008 Sep 01 2 ≤ Ferroxcube Planar ER cores and accessories ER32/6/25 MOUNTING INFORMATION 32.85 min 26.6 max 12.7 min 26.0 min R0.8 max (8×) MFP081 Fig.2 Recommended PCB cut-out for ER32/6/25 cores. Winding data for ER32/6/25 planar core WINDING AREA (mm2) AVERAGE TRACK LENGTH (mm) FOOTPRINT AREA (mm2) 41.1 62.2 828 2008 Sep 01 3 Ferroxcube Planar ER cores and accessories ER32/6/25 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 4