B82801A1214A050

SMT current sense transformers EE 4.2 core Series/Type: B82801A1 Date: March 2020 Data Sheet ¤TDK Electronics AG 2020. Reproduction, publication and dissemination of this publication, enclosures hereto and the information contained therein without TDK Electronics’ prior express consent is prohibited. SMT current sense transformers B82801A1 EE 4.2 SMT current sensor transformers Applications ■ ■ ■ ■ Switching power supplies Feedback control Overload sensing Load drop/shut down detection Features ■ ■ ■ ■ Very low DC resistance Different turns ratios Very small package RoHS compatible Marking ■ No marking on component Delivery mode and packing units ■ 16 mm blister tape, 178 mm ‡ reel ■ Carton packaging ■ Packing units: 600 pcs./reel; 3000 pcs./carton Remark ■ Variation in core coating color is possible Please read Cautions and warnings and Important notes at the end of this document. 2 03/20 SMT current sense transformers B82801A1 EE 4.2 SMT current sensor transformers Dimensional drawing Dimensions in mm Application circuit and pinning Please read Cautions and warnings and Important notes at the end of this document. 3 03/20 SMT current sense transformers B82801A1 EE 4.2 Technical data and measuring conditions Frequency range 50 kHz ... 1 MHz Hi-pot 500 Vrms, 50 Hz, 2 s (np to ns) Inductance L (1-2) 100 kHz, 100 mV, @ +25 °C DC resistance Rmax Measured at +25 °C Sensed current The max. primary current of 7 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 (packaged) –20 °C … +40 °C, d75% RH Operating temperature range 40 °C … +125 °C Weight Approx. 0.15 g Please read Cautions and warnings and Important notes at the end of this document. 4 03/20 SMT current sense transformers B82801A1 EE 4.2 V sense max ˜ G 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 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: 1.44 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 Turns ratio DC resistance Rmax (m:) VoltageRecomm. Ordering code time product RT at ns1) PH np : ns primary V 33 1 : 20 2.5 700 5.76 20 B82801A1333A020 74 1 : 30 2.5 1100 8.6 30 B82801A1743A030 132 1 : 40 2.5 1500 11.5 40 B82801A1134A040 205 1 : 50 2.5 2400 14.4 50 B82801A1214A050 295 1 : 60 2.5 3600 17.3 60 B82801A1304A060 400 1 : 70 2.5 4600 20.0 70 B82801A1404A070 820 1 : 100 2.5 9000 28.8 100 B82801A1824A100 1280 1 : 125 2.5 15000 36.0 125 B82801A1135A125 1840 1 : 150 2.5 22700 43.2 150 B82801A1185A150 secondary ˜μs : 1) The maximum volt-sec rating limits the peak flux density to 200 mT when used in a unipolar drive application. For bi-polar drive applications, a maximum volt-sec of two times is acceptable. Please read Cautions and warnings and Important notes at the end of this document. 5 03/20 SMT current sense transformers B82801A1 EE 4.2 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 03/20 SMT current sense transformers B82801A1 EE 4.2 Recommended reflow soldering curve Pb-free solder material (based on JEDEC J-STD 020D) T1 °C T2 °C T3 T4 T1 sec T2 sec T3 sec °C °C 150 200 217 245