FERROXCUBE DATA SHEET EP20 EP cores and accessories Supersedes data of September 2004 2008 Sep 01 Ferroxcube EP cores and accessories EP20 CORE SETS Effective core parameters SYMBOL PARAMETER VALUE UNIT Σ(I/A) core factor (C1) 0.520 mm−1 Ve effective volume 3230 mm3 Ie effective length 41.1 mm Ae effective area 78.7 mm2 Amin minimum area 60.8 mm2 m mass of set ≈27 g 8.8 ± 0.25 handbook, halfpage 15 ± 0.35 4.5 ± 0.2 ;;; ;;; ;;; 16.5 ± 0.4 21.4 ± 0.2 14.4 ± 0.3 MBG178 24 ± 0.5 Dimensions in mm. Fig.1 EP20 core set. Core sets for general purpose transformers and power applications Clamping force for AL measurements, 60 ±20 N. GRADE 3C81 AL (nH) µe 160 ±3% ≈ 67 3C94 3C96 2008 Sep 01 ≈ 790 TYPE NUMBER EP20-3C81-E160 250 ±3% ≈ 104 ≈ 460 EP20-3C81-A250 315 ±3% ≈ 131 ≈ 350 EP20-3C81-A315 400 ±3% ≈ 166 ≈ 260 EP20-3C81-A400 EP20-3C81-A630 630 ±5% 3C91 TOTAL AIR GAP (µm) ≈ 262 ≈ 150 4900 ±25% ≈ 2040 ≈0 EP20-3C81 4900 ±25% ≈ 2040 ≈0 EP20-3C91 160 ±3% ≈ 67 ≈ 790 EP20-3C94-E160 250 ±3% ≈ 104 ≈ 460 EP20-3C94-A250 315 ±3% ≈ 131 ≈ 350 EP20-3C94-A315 400 ±3% ≈ 166 ≈ 260 EP20-3C94-A400 630 ±5% ≈ 262 ≈ 150 EP20-3C94-A630 4435 ±25% ≈ 1840 ≈0 EP20-3C94 3850 ±25% ≈ 1600 ≈0 EP20-3C96 712 Ferroxcube EP cores and accessories AL (nH) µe 160 ±3% ≈ 67 GRADE 3F3 EP20 TOTAL AIR GAP (µm) TYPE NUMBER ≈ 790 EP20-3F3-E160 250 ±3% ≈ 104 ≈ 460 EP20-3F3-A250 315 ±3% ≈ 131 ≈ 350 EP20-3F3-A315 400 ±3% ≈ 166 ≈ 260 EP20-3F3-A400 ≈ 262 ≈ 150 EP20-3F3-A630 ≈ 1480 ≈0 630 ±5% 3550 ±25% EP20-3F3 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 f = 400 kHz; ˆ = 50 mT; B T = 100 °C 3C81 ≥315 ≤ 0.75 − − − 3C91 ≥315 − ≤ GRADE 0.2(1) ≤ 1.3(1) − 3C94 ≥320 − ≤ 0.25 ≤ 1.6 − 3C96 ≥340 − ≤ 0.2 ≤ 1.3 ≤ 0.5 3F3 ≥315 − ≤ 0.36 − ≤ 0.62 Properties of core sets under power conditions (continued) B (mT) at CORE LOSS (W) at H = 250 A/m; f = 25 kHz; T = 100 °C f = 500 kHz; ˆ = 50 mT; B T = 100 °C f = 500 kHz; ˆ = 100 mT; B T = 100 °C f = 1 MHz; ˆ = 30 mT; B T = 100 °C f = 3 MHz; ˆ = 10 mT; B T = 100 °C 3C81 ≥315 − − − − 3C91 ≥315 − − − − 3C94 ≥320 − − − − 3C96 ≥340 ≤ 1.0 − − − 3F3 ≥315 − − − − GRADE Note 1. Measured at 60 °C. 2008 Sep 01 713 Ferroxcube EP cores and accessories EP20 COIL FORMER General data PARAMETER SPECIFICATION Coil former material phenolformaldehyde (PF), glass-reinforced, flame retardant in accordance with “UL 94V-0” ; UL file number E41429(M) Pin material copper-clad steel, tin (Sn) plated Maximum operating temperature 180 °C, “IEC 60085”, class H 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 13.9 ±0.1 15.9 ±0.1 0 2.65−0.1 1+0.15 0 12.5 ±0.1 9.2 ±0.1 +0.05 ∅10.25 −0.15 1.5 ±0.1 17.78 0.6 ± 0.1 5 ±0.5 0.5 ±0.02 5.08 20.32 ±0.05 CBW623 17.78 ±0.05 25.1 ±0.2 21.9 ±0.2 Dimensions in mm. Fig.2 EP20 coil former: 10-pins. Winding data and area product for 10-pins EP20 coil former NUMBER OF SECTIONS MINIMUM WINDING AREA (mm2) NOMINAL WINDING WIDTH (mm) AVERAGE LENGTH OF TURN (mm) AREA PRODUCT Ae x Aw (mm4) TYPE NUMBER 1 40.3 12.4 39.4 3170 CSH-EP20-1S-10P-T 2 2 x 19.0 2 x 5.95 39.4 2 x 1500 CSH-EP20-2S-10P-T 2008 Sep 01 714 Ferroxcube EP cores and accessories EP20 MOUNTING PARTS General data ITEM REMARKS FIGURE TYPE NUMBER Clasp steel, tin (Sn) plated (thickness 3-5 microns) 3 CLA-EP20-Z Spring copper-tin alloy (CuSn), tin (Sn) plated 4 SPR-EP20-Z 26.5 5.2 ± 0.15 6.5 ± 0.1 23.3 3.5 1.8 21.2 ± 0.15 18.2 ± 0.1 5.5 ± 0.1 4.2 25.4 ± 0.1 0.4 12 ± 0.1 5.5 ± 0.1 MFP176 12 ± 0.1 MFP177 Dimensions in mm. Dimensions in mm. Fig.3 Mounting clasp CLA-EP20. 2008 Sep 01 Fig.4 Mounting spring SPR-EP20. 715 Ferroxcube EP cores and accessories EP20 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 01 716