B82801B0184A030

SMT current sense transformers EE 5.0 core Series/Type: B82801B Date: August 2015 a~í~=pÜÉÉí EPCOS AG 2015. Reproduction, publication and dissemination of this publication, enclosures hereto and the information contained therein without EPCOS’ prior express consent is prohibited. EPCOS AG is a TDK Group Company. SMT current sense transformers B82801B EE 5.0 core Application ■ ■ ■ ■ Switching power supplies Feedback control Overload sensing Load drop/shut down detection Features ■ ■ ■ ■ ■ Very low DC resistance Different turns ratios Small package Other pinning on request RoHS compatible Marking ■ Middle block of ordering code Delivery mode and packing units ■ 16 mm blister tape, 330 mm reel ■ Carton packaging ■ Packing units: 900 pcs./reel; 7200 pcs./carton Please read Cautions and warnings and Important notes at the end of this document. 2 08/15 SMT current sense transformers B82801B EE 5.0 Dimensional drawing Dimensions in mm Application circuit and pinning Please read Cautions and warnings and Important notes at the end of this document. 3 08/15 SMT current sense transformers B82801B EE 5.0 Technical data and measuring conditions Frequency range 50 kHz ... 1 MHz Hi-pot 1000 V AC, 50 Hz, 2 s (winding to winding) Inductance L (1-3) 100 kHz, 100 mV, @ +25 °C DC resistance Rmax Measured at +25 °C Sensed current The max. primary current of 20 A causes approx. +40 °C temperature rise Solderability 99.9 Sn, lead-free. Or Sn96.5Ag3.0Cu0.5: +(245 5°C, (3 03) s Wetting of soldering area  95% (to IEC 60068-2-58) Resistance to soldering heat +(260  5) °C, (10 1) s to IEC 60068-2-58 Storage conditions –20 °C … +40 °C, 75% RH (packaged) Operating temperature range 40 °C … +125 °C Weight Approx. 0.4 g Please read Cautions and warnings and Important notes at the end of this document. 4 08/15 SMT current sense transformers B82801B EE 5.0 V sense max   max B max = ----------------------------------------n s  A e  f osc With: Maximum magnetic flux density in the ferrite core of the current sense transformer Bmax Vsense,max Maximum output voltage of the measurement signal max Maximum duty cycle ns Number of turns of the secondary winding of the current sense transformer Ae Effective magnetic area of the ferrite core fosc Operating frequency of the switching operator IC Typical value for Ae: 2.5 x 10-6 m2 Typical Bmax: 200 mT V sense max  n s R T = ----------------------------------I prim max With: RT Vsense,max ns Iprim,max Resistance of burden resistor Maximum output voltage of the measurement signal Number of turns on the secondary side of the CT Maximum primary current (peak current) Characteristics and ordering codes Lmin H Turns ratio DC resistance Rmax (m) Recomm. Ordering code Voltagetime product RT  primary 1 : 20 0.6 180 1 : 30 0.6 870 15.0 30 B82801B0184A030 320 1 : 40 0.6 1140 20.0 40 B82801B0324A040 500 1 : 50 0.6 1500 25.0 50 B82801B0504A050 720 1 : 60 0.6 1980 30.0 60 B82801B0724A060 secondary 400 V µs  Np : Ns 80 10.0 20 B82801B0803A020 980 1 : 70 0.6 3000 35.0 70 B82801B0984A070 2000 1 : 100 0.6 5500 50.0 100 B82801B0205A100 3000 1 : 125 0.6 6500 62.5 125 B82801B0305A125 8000 1 : 200 0.6 33240 100.0 200 B82801B0925A200 Please read Cautions and warnings and Important notes at the end of this document. 5 08/15 SMT current sense transformers B82801B EE 5.0 Taping and packing Blister tape Dimensions in mm Reel Dimensions in mm Please read Cautions and warnings and Important notes at the end of this document. 6 08/15 SMT current sense transformers B82801B EE 5.0 Recommended reflow soldering curve Pb-free solder material (based on JEDEC J-STD 020D) T2 T3 T4 T1 °C °C °C °C sec sec sec 150 200 217 245