Ferrites and accessories PM 87/70 Core and accessories Series/Type: Date: B65713, B65714 September 2006 Data Sheet EPCOS AG 2006. Reproduction, publication and dissemination of this data sheet and the information contained therein without EPCOS’ prior express consent is prohibited.
PM 87/70 Core B65713 ■ To IEC 61247 ■ For power transformers >1 kW (20 kHz) and energy storage chokes ■ Delivery mode: sets Magnetic characteristics (per set) Σ l/A le Ae Amin Ve = 0.16 mm–1 = 146 mm = 910 mm2 = 700 mm2 = 133000 mm3 Approx. weight 770 g/set Gapped Material N27 µe Ordering code nH s approx. mm 400 ± 3% 5000 ±15% 3.50 0.14 51 638 B65713A0400A027 B65713A5000L027 AL value Ungapped Material AL value µe PV Ordering code nH W/set N27 12000 +30/–20% 1530 < 12.
PM 87/70 Accessories B65714 Coil former Material: GFR polyterephthalate (UL 94 V-0, insulation class to IEC 60085: F max. operating temperature 155 °C), color code black Valox 420-SE0 ® [E45329 (M)], GE PLASTICS B V Solderability: to IEC 60068-2-20, test Ta, method 1 (aging 3): 235 °C, 2 s Resistance to soldering heat: to IEC 60068-2-20, test Tb, method 1B: 350 °C, 3.5 s Winding: see Data Book 2007, chapter “Processing notes, 2.1” Pins squared in the start-of-winding area.
Ferrites and accessories Cautions and warnings Mechanical stress and mounting Ferrite cores have to meet mechanical requirements during assembling and for a growing number of applications. Since ferrites are ceramic materials one has to be aware of the special behavior under mechanical load. As valid for any ceramic material, ferrite cores are brittle and sensitive to any shock, fast changing or tensile load.
Important notes The following applies to all products named in this publication: 1. Some parts of this publication contain statements about the suitability of our products for certain areas of application. These statements are based on our knowledge of typical requirements that are often placed on our products in the areas of application concerned.
