SMT flyback transformers EFD series Series/Type: B82802A Date: October 2012 Content of header bars 1 and 2 of data sheet will be automatically entered in headers and footers! Please fill in the table and then change the color to "white". This ensures that the table disappears (invisible) for the customer PDF. Don't change formatting when entering or pasting text in the table and don't add any cell or line in and to it! Identification/Classification 1 (header 1 + top left bar): SMT flyback transformers Identification/Classification 2 (header 2 + bottom left header bar): EFD series Series/Type: (bottom right header bar) B82802A Preliminary data (optional): (if necessary) Department: EPCOS Ho PD Date: October 2012 EPCOS AG 2012. Reproduction, publication and dissemination of this publication, enclosures hereto and the information contained therein without EPCOS' prior express consent is prohibited. SMT flyback transformers EFD series B82802A Construction Dimensional drawing EFD type ferrite core 10 gull wing terminals EFD15 Features Low profile SMT package with high through-put power capability Industry standard footprints Compliant with JEDEC J-STD-020D MSL level 1 RoHS compatible Custom variations available (on request) Applications General purpose isolated DC/DC converters (up to 55W) Power over Ethernet ( PoE/12W and PoE +/30W) Powered Devices(PD) and Power Sourcing Equipment (PSD) EFD20 Marking Manufacturer, middle block of ordering code , date code, pin1 marker Delivery mode and packing unit 44/56-mm blister tape , 330-mm Ø reel Packing unit : 300 pcs./ reel (EFD15) Packing unit : 160 pcs./ reel (EFD20) Packing unit : 80 pcs./ reel (EFD25) EFD25 EPCOS Ho PD Please read Cautions and warnings and Important notes at the end of this document. October 2012 Page 2 of 7 SMT flyback transformers EFD series B82802A Schematic : Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 EPCOS Ho PD Please read Cautions and warnings and Important notes at the end of this document. October 2012 Page 3 of 7 SMT flyback transformers EFD series B82802A Technical data and measuring conditions Input voltage Vin 36 V DC … 60 V DC Test voltage Vtest 1500 V AC Main inductance L 100 kHz, 100 mV, +25 °C Inductance tolerance ±10% at +25 °C DC current IDC With IDC bias Ldrop approx. 20% Operating frequency f 100 kHz DC resistance Rmax Measured at +25 °C, maximum values (specified per winding) Solderability ≥99.9 Sn or Sn96.5Ag3.0Cu0.5: +(245± 5) °C, (3±0.3) s Wetting of soldering area: ≥95% (to IEC 60068-2-58) Operating temperature range –40°C … +125°C Characteristics and ordering codes Ordering code Core Schematic L Lstray,max Turns ratio DC resistance Rmax (Ω) Pri μH μH Sec Vout1 Vout2 Vout3 B82802A0012A215 EFD15 Fig 1 100 3.0 (1-10):(2-9):(5-4) 1:2.25:6.5 0.03 0.19 0.45 - B82802A0012A315 EFD15 Fig 2 100 3.0 (1-10):(2-9):(3-8):(5-4) 1:2.5:0.75:7.5 0.05 0.37 0.43 0.03 B82802A0030A220 EFD20 Fig 3 40 1.5 (1-10):(2-9):(5-4) 1:2.25:6.5 B82802A0030A320 EFD20 Fig 4 40 1.8 B82802A0055A225 EFD25 Fig 5 22 1.5 B82802A0055A325 EFD25 Fig 6 22 1.2 Ordering code B82802A0012A215 B82802A0012A315 B82802A0030A220 B82802A0030A320 B82802A0055A225 B82802A0055A325 Core EFD15 EFD15 EFD20 EFD20 EFD25 EFD25 Schematic Fig 1 Fig 2 Fig 3 Fig 4 Fig 5 Fig 6 0.015 0.04 0.1 - (1-10):(2-9):(3-8):(5-4) 1:2.25:0.75:6.5 0.018 0.04 0.1 0.01 (1-10):(2-9):(5,4-7) 0.003 0.04 (1-10):(2-9):(3-8):(5-4) 1:2.33:0.66:6.67 0.015 0.04 0.03 0.05 0.003 Power Vout1 Vout2 Vout3 W V/A V/A V/A 12 12 30 30 55 55 12/0.5 5.0/0.8 12/1.25 5.0/2.0 12/2.3 5.0/3.7 5.0/1.2 3.3/1.2 5.0/3.0 3.3/3.0 5.0/5.5 3.3/5.5 12/0.33 12/0.83 12/1.5 EPCOS Ho PD Please read Cautions and warnings and Important notes at the end of this document. 1:2.5:7.5 October 2012 Page 4 of 7 SMT flyback transformers EFD series B82802A Taping and Packing Item DIM. (mm) Core EFD15 EFD20 EFD25 Tolerance Blister tape W T 44.0 0.5 44.0 0.6 56.0 0.6 ± 0.3 ± 0.05 A0 16.6 21.7 26.2 B0 22.3 26.6 33.0 P 24.0 32.0 44.0 K0 8.6 11.6 14.6 K1 8.1 10.6 13.8 Reel F Φ 40.4 330.0 40.4 330.0 52.4 330.0 ±0.1 ±0.1 ±0.1 ±0.1 ±0.1 ±0.1 ±0.5 W1 44.0 44.0 56.0 W2 48.0 48.0 60.0 ±2.0 ±0.15 Blister tape Reel EPCOS Ho PD Please read Cautions and warnings and Important notes at the end of this document. October 2012 Page 5 of 7 SMT flyback transformers EFD series B82802A Cautions and warnings ■ Please note the recommendations in our Inductors data book (latest edition) and in the data sheets. – Particular attention should be paid to the derating curves given there. – The soldering conditions should also be observed. Temperatures quoted in relation to wave soldering refer to the pin, not the housing. ■ If the components are to be washed varnished it is necessary to check whether the washing varnish agent that is used has a negative effect on the wire insulation, any plastics that are used, or on glued joints. In particular, it is possible for washing varnish agent residues to have a negative effect in the long-term on wire insulation Washing processes may damage the product due to the possible static or cyclic mechanical loads (e.g. ultrasonic cleaning). They may cause cracks to develop on the product and its parts, which might lead to reduced reliability or lifetime. ■ The following points must be observed if the components are potted in customer applications: – Many potting materials shrink as they harden. They therefore exert a pressure on the plastic housing or core. This pressure can have a deleterious effect on electrical properties, and in extreme cases can damage the core or plastic housing mechanically. – It is necessary to check whether the potting material used attacks or destroys the wire insulation, plastics or glue. – The effect of the potting material can change the high-frequency behaviour of the components. ■ Ferrites are sensitive to direct impact. This can cause the core material to flake, or lead to breakage of the core. ■ Even for customer-specific products, conclusive validation of the component in the circuit can only be carried out by the customer.. EPCOS Ho PD Please read Cautions and warnings and Important notes at the end of this document. October 2012 Page 6 of 7 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. We nevertheless expressly point out that such statements cannot be regarded as binding statements about the suitability of our products for a particular customer application. As a rule, EPCOS is either unfamiliar with individual customer applications or less familiar with them than the customers themselves. For these reasons, it is always ultimately incumbent on the customer to check and decide whether an EPCOS product with the properties described in the product specification is suitable for use in a particular customer application. 2. We also point out that in individual cases, a malfunction of electronic components or failure before the end of their usual service life cannot be completely ruled out in the current state of the art, even if they are operated as specified. In customer applications requiring a very high level of operational safety and especially in customer applications in which the malfunction or failure of an electronic component could endanger human life or health (e.g. in accident prevention or life-saving systems), it must therefore be ensured by means of suitable design of the customer application or other action taken by the customer (e.g. installation of protective circuitry or redundancy) that no injury or damage is sustained by third parties in the event of malfunction or failure of an electronic component. 3. The warnings, cautions and product-specific notes must be observed. 4. In order to satisfy certain technical requirements, some of the products described in this publication may contain substances subject to restrictions in certain jurisdictions (e.g. because they are classed as hazardous). Useful information on this will be found in our Material Data Sheets on the Internet (www.epcos.com/material). Should you have any more detailed questions, please contact our sales offices. 5. We constantly strive to improve our products. Consequently, the products described in this publication may change from time to time. The same is true of the corresponding product specifications. Please check therefore to what extent product descriptions and specifications contained in this publication are still applicable before or when you place an order. We also reserve the right to discontinue production and delivery of products. Consequently, we cannot guarantee that all products named in this publication will always be available. The aforementioned does not apply in the case of individual agreements deviating from the foregoing for customer-specific products. 6. Unless otherwise agreed in individual contracts, all orders are subject to the current version of the “General Terms of Delivery for Products and Services in the Electrical Industry” published by the German Electrical and Electronics Industry Association (ZVEI). 7. The trade names EPCOS, BAOKE, Alu-X, CeraDiode, CeraLink, CSMP, CSSP, CTVS, DeltaCap, DigiSiMic, DSSP, FilterCap, FormFit, MiniBlue, MiniCell, MKD, MKK, MLSC, MotorCap, PCC, PhaseCap, PhaseCube, PhaseMod, PhiCap, SIFERRIT, SIFI, SIKOREL, SilverCap, SIMDAD, SiMic, SIMID, SineFormer, SIOV, SIP5D, SIP5K, ThermoFuse, WindCap are trademarks registered or pending in Europe and in other countries. Further information will be found on the Internet at www.epcos.com/trademarks. Page 7 of 7