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CST2010 Series
SMT Current Sense Transformers

  • Sensed current up to 40 Amps
  • For use between 1 kHz to 1 MHz
  • Very low primary resistance
  • AEC-Q200 Grade 1 (−40°C to +125°C)
  • 500 Vrms, one minute isolation (hipot) winding to winding
  • RoHS-compliant. 260°C compatible. Tin-silver over tin over nickel over phos bronze terminations

SPECIFICATIONS


Part number1
Click to get parts
Turns (N)
pri : sec
Inductance2
min (mH)
DCR max3
(Ohms)
Freq
range
(kHz)
Volt‑time
product4
(Vµsec)
Sensed
current5
Iin (A)
Terminating
resistance RT6
(Ohms)
Pri Sec
CST2010-020L_ 1 : 20 0.34 0.00036 0.180 10 – 1000 50.8 40 0.5
CST2010-030L_ 1 : 30 0.76 0.00036 0.265 7 – 1000 76.2 40 0.8
CST2010-040L_ 1 : 40 1.36 0.00036 0.560 5 – 1000 101.6 40 1.0
CST2010-050L_ 1 : 50 2.12 0.00036 0.705 4 – 1000 127.0 40 1.3
CST2010-060L_ 1 : 60 3.06 0.00036 0.850 3 – 1000 152.4 40 1.5
CST2010-070L_ 1 : 70 4.16 0.00036 1.00 3 – 1000 177.8 40 1.8
CST2010-080L_ 1 : 80 5.44 0.00036 1.15 2 – 1000 203.2 40 2.0
CST2010-100L_ 1 : 100 8.50 0.00036 1.45 2 – 1000 254.0 40 2.5
CST2010-125L_ 1 : 125 13.3 0.00036 1.85 2 – 1000 317.5 40 3.1
CST2010-150L_ 1 : 150 19.2 0.00036 2.25 1 – 1000 381.0 40 3.8
CST2010-200L_ 1 : 200 34.0 0.00036 4.06 1 – 1000 508.0 40 5.0
1 When ordering, please specify packaging code: e.g.CST2010-200LD
  Packaging D = 13" machine-ready reel
EIA-481 embossed plastic tape (300 parts per full reel).
B = Less than full reel
In tape, but not machine-ready. To have a leader and trailer added ($25 charge), use code letter D instead.
2 Inductance measured between secondary pins at 1 kHz, 0.1 Vrms, 0 Adc.
3 DCR at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
4 Primary current of 40 A causes less than 40°C temperature rise from 25°C ambient. Higher current causes a greater temperature rise (see Temperature Rise vs Current curve).
5 Terminating resistance (RT) value is based on 1 Volt output with 40 Amps flowing through the primary. Varying terminating resistance increases or decreases output Voltage/Ampere according to the following equation:
RT (Ohms) = Vout × Nsec / Iin.
6 Ambient temperature range: −40°C to +125°C
7 Maximum part temperature: +165°C (ambient + temp rise)
8 Storage temperature range: Component: −40°C to +165°C
Tape and reel packaging: −40°C to +80°C
9 Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between.
10 Electrical specifications at 25°C.
Refer to Soldering Coilcraft Components before soldering.
PCB washing: Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info..

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Updated: June 15, 2017