d a t a sh eet supersedes data of september 2004 2008 sep 01 ferroxcube pm87/70 pm cores
2008 sep 01 1105 ferroxcube pm cores pm87/70 core sets effective core parameters symbol parameter value unit (i/a) core factor (c1) 0.161 mm ? 1 v e effective volume 133000 mm 3 i e effective length 146 mm a e effective area 910 mm 2 a min minimum area 700 mm 2 m mass of set 770 g 87 0 ? 3 67.1 + 2.1 0 41 1.5 13 35 1 5 0 ? 0.4 31.7 0 ? 1 8.5 + 0.3 0 70 0 ? 0.8 48 + 0.8 0 mfp052 fig.1 pm87/70 core set. dimensions in mm. core sets for general purpose transformers and power applications clamping force for a l measurements, 1250 250 n. properties of core sets under power conditions grade a l (nh) e air gap ( m) type number 3c90 15000 25 % 1770 0 pm87/70-3c90 3c94 15000 25 % 1770 0 pm87/70-3c94 grade b (mt) at core loss (w) at h = 250 a/m; f = 25 khz; t=100 c f=25khz; =200mt; t=100 c 3c90 320 20 3c94 315 16 b ?
2008 sep 01 1106 ferroxcube pm cores pm87/70 data sheet status definitions 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 data sheet status product status definitions preliminary specification development this data sheet contains prelimin ary data. ferroxcube reserves the right to make changes at any time without not ice 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. 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.
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