B82801A743A30

SMT current sense transformers Series/Type: B82801A The following products presented in this data sheet are being withdrawn. Ordering Code Substitute Product Date of Withdrawal B82801A0824A100 B82801A0743A030 B82801A0404A070 B82801A1824A100 B82801A1743A030 B82801A1404A070 2018-12-21 2018-12-21 2018-12-21 Deadline Last Orders 2019-06-30 2019-06-30 2019-06-30 Last Shipments 2019-09-30 2019-09-30 2019-09-30 Ordering Code Substitute Product Date of Withdrawal B82801A0333A020 B82801A0304A060 B82801A0214A050 B82801A0185A150 B82801A0135A125 B82801A0134A040 B82801A1333A020 B82801A1304A060 B82801A1214A050 B82801A1185A150 B82801A1135A125 B82801A1134A040 2018-12-21 2018-12-21 2018-12-21 2018-12-21 2018-12-21 2018-12-21 Deadline Last Orders 2019-06-30 2019-06-30 2019-06-30 2019-06-30 2019-06-30 2019-06-30 Last Shipments 2019-09-30 2019-09-30 2019-09-30 2019-09-30 2019-09-30 2019-09-30 Please contact your nearest TDK sales office if you need support in selecting a suitable substitute. The addresses of our worldwide sales network are presented at www.tdk-electronics.tdk.com/sales. SMT current sense transformers B82801A 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 ■ 12 mm blister tape, 178 mm ‡ reel ■ Carton packaging ■ Packing units: 600 pcs./reel; 3000 pcs./carton Please read Cautions and warnings and Important notes at the end of this document. 2 05/16 SMT current sense transformers B82801A 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 05/16 SMT current sense transformers B82801A EE 4.2 Technical data and measuring conditions Frequency range 50 kHz ... 1 MHz Hi-pot 500 V AC, 50 Hz, 2 s (winding to winding) 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 –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 05/16 SMT current sense transformers B82801A EE 4.2 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: 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 PH Np : Ns primary V 33 1 : 20 2.5 320 5.76 20 B82801A0333A020 74 1 : 30 2.5 800 8.6 30 B82801A0743A030 132 1 : 40 2.5 1300 11.5 40 B82801A0134A040 205 1 : 50 2.5 2200 14.4 50 B82801A0214A050 295 1 : 60 2.5 3600 17.3 60 B82801A0304A060 400 1 : 70 2.5 4600 20.0 70 B82801A0404A070 820 1 : 100 2.5 8700 28.8 100 B82801A0824A100 1280 1 : 125 2.5 13000 36.0 125 B82801A0135A125 1840 1 : 150 2.5 21000 43.2 150 B82801A0185A150 secondary Please read Cautions and warnings and Important notes at the end of this document. ˜µs 5 05/16 SMT current sense transformers B82801A 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 05/16 SMT current sense transformers B82801A EE 4.2 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