B82801C565A100

SMT current sense transformers EE 12.6 Series/Type: B82801C Date: March 2017 a~í~=pÜÉÉí ¤EPCOS AG 2017. 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 B82801C EE12.6 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 ■ 32 mm blister tape, 330 mm ‡reel ■ Carton packaging ■ Packing units: 200 pcs./reel; 800 pcs./carton Please read Cautions and warnings and Important notes at the end of this document. 2 03/17 SMT current sense transformers B82801C EE12.6 Dimensional drawing Dimensions in mm Please read Cautions and warnings and Important notes at the end of this document. 3 03/17 SMT current sense transformers B82801C EE12.6 Application circuit and pinning Technical data and measuring conditions Frequency range 50 ... 500 kHz Hi-pot 1500 V AC, 50 Hz, 2 s (winding to winding) Inductance L (2-4) 100 kHz, 100 mV, @ +25 °C DC resistance Rmax Measured at +25 °C (specified per winding) Sensed current The max. primary current of 40 A causes approx. +40 °C temperature rise Solderability t99.9 Sn, lead-free. Or Sn96.5Ag3.0Cu0.5: +(245 r5°C, (3 r03) s Wetting of soldering area t 95% (to IEC 60068-2-58) Resistance to soldering heat +(260 r 5) °C, (10 r1 s) to IEC 60068-2-58 Storage conditions –20 °C … +40 °C, d75% RH Operating temperature range 40 °C … +125 °C Weight Approx. 4.8 g Please read Cautions and warnings and Important notes at the end of this document. 4 03/17 SMT current sense transformers B82801C EE12.6 V sense max ˜ G max B max = ----------------------------------------n s ˜ A e ˜ f osc With: Bmax Maximum magnetic flux density in the ferrite core of the current sense transformer Vsense,max Maximum output voltage of the measurement signal Gmax 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: 12.4 x 10-6 m2 Typical Bmax: 200 mT V sense max ˜ n s R T = ----------------------------------I prim max With: RT Resistance of burden resistor Vsense,max Maximum output voltage of the measurement signal ns Number of turns on the secondary side of the CT Iprim,max Maximum primary current (peak current) Characteristics and ordering codes Lmin Turns ratio DC resistance Rmax (m:) mH Np : Ns primary 1.4 1 : 50 0.28 400 124 50 B82801C0145A050 5.6 1 : 100 0.28 1000 248 100 B82801C0565A100 12.6 1 : 150 0.28 2200 372 150 B82801C1265A150 22.4 1 : 200 0.28 2900 496 200 B82801C2245A200 Recomm. Ordering code Voltagetime product RT ˜ secondary V µs Please read Cautions and warnings and Important notes at the end of this document. 5 : 03/17 SMT current sense transformers B82801C EE12.6 Taping and packing Blister tape Dimensions in mm Dimensions in mm Reel Dimensions in mm Please read Cautions and warnings and Important notes at the end of this document. 6 03/17 SMT current sense transformers B82801C EE12.6 Recommended reflow soldering curve Pb-free solder material (based on JEDEC J-STD 020D) T1 T2 T3 T4 T1 T2 T3 °C °C °C °C sec sec sec 150 200 217 245