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Cx Family Common Mode Chokes
0402CT Low Profile Chip Inductors
XAL7050 High-inductance Shielded Power Inductors
XGL4020 Ultra-low DCR Power Inductors

CST2010V Series

SMT Current Sense Transformers

RoHS compliant AEC-Q flag
  • High isolation voltage CST2010 current sense transformer
  • Sensed current up to 40 A
  • Designed for use up to 1 MHz and above
  • 2100 Vrms, one minute isolation (hipot) between windings
  • AEC-Q200 Grade 1 (−40°C to +125°C)
  • Designed to comply with IEC61558-1, IEC62369-1, and IEC60664-1 for providing Reinforced or Basic Insulation
    • 5.5 mm creepage and 5.0 mm clearance to meet reinforced insulation for working voltage up to 136 V and basic insulation for working voltage up to 550 V with material group 3, pollution degree P2, OVCII, and altitude up to 2 km.

Buy Now:
Count Unit price
1 $2.93
250 $2.50
500 $2.20
1000 $1.90
2500 $1.62
5000 $1.49

For high volume or non-stock items, request a quote.

. in stock, ready to ship today.
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Electrical specifications at 25°C.

Part number
(Hover for schematics)
at 0A (mH) 1
(Tolerance: ±30%)
DCR max (Ω) 2 Turns Ratio Volt-time
product (V-µs) 3
Frequency (kHz) 4 Current (A) 5 Terminating
resistance RT (Ω) 6
Voltage (Vrms) 7
Pri Sec Pri : Sec
CST2010V-150LD 19 0.00036 3.6 1 : 150 381 1 >1000 40 3.8 2100
  1. Inductance measured between secondary pins at 1 kHz, 0.1 Vrms, 0 Adc.
  2. DCR at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
  3. Volt-time product is for the secondary, between pin 2 and 4.
  4. For specific questions regarding frequency range, please contact us at [email protected].
  5. Primary current of 40 A causes approximately 40°C temperature rise from 25°C ambient. Higher current causes a greater temperature rise (see Temperature Rise vs Current curve).
  6. 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:
    R= Vout × Nsec / Iin.
  7. 2100 Vrms, one minute isolation (hipot) winding to winding.


  • RoHS compliant tin-silver over tin over nickel over phos bronze (pins 2-4);
    RoHS compliant matte tin over nickel over copper (pins 11-12)


  • D = 13″ machine-ready reel. EIA-481 embossed plastic tape (250 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
RoHS compliant
Ambient temperature range:
–40°C to +125°C
Storage temperature range:
Component: –40°C to +165°C.
Tape and reel Packaging: –40°C to +80°C
Maximum part temperature:
+165°C (ambient + temp rise)
Failures in Time (FIT) / Mean Time Between Failures (MTBF):

Performance curves



Physical characteristics


Tape and Reel specification


Parts per reel Reel dimensions (mm) Tape dimensions (mm) Orientation
13" (330 mm) A B C D E W P Po P1 H T part_or_c.gif
250 330 100 13 38,4 32,4 32 20 4 2 11,2 0,5

General specification

Core Material:
3.8 g
250/13″ reel; Plastic tape: 32 mm wide, 0.5 mm thick, 20 mm pocket spacing, 11.2 mm pocket depth


Moisture Sensitivity Level (MSL):
1 (unlimited floor life at <30°C / 85% relative humidity)
Resistance to soldering heat:
Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles
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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