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Close up of CST2020-100L
3D Model Datasheet
CST2020 Current Sense Transformer

CST2020-100L

RoHS compliant AEC-Q flag

For more information and specification about the part.

Go to series
Buy Now:
Count Unit price
1 $3.66
100 $3.14
300 $2.36
500 $1.43
1000 $1.11
2500 $0.95
5000 $0.87

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

. in stock, ready to ship today.
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Specifications

Electrical specifications at 25°C.

Part number
(Hover for schematics)
Inductance
min (mH) 1 		DCR max (Ω) Turns Ratio Volt-time
product (V-µs) 2 		Frequency (kHz) 3 Current (A) 4 Terminating
resistance RT (Ω) 5 		Isolation
Voltage (Vrms) 6
Pri Sec Pri : Sec
CST2020-100L 7.07 0.00084 1.2 1 : 100 395 1.3 40.0 2.5 4000
Notes
  1. Inductance measured between secondary pins at 10 kHz, 0.1 Vrms, 0 Adc.
  2. Volt-time product is for the secondary, between pin 3 and 1.
  3. For specific questions regarding frequency range, please contact us at [email protected].
  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. 4000 Vrms, one minute isolation (hipot) winding to winding

Termination:

  • RoHS-compliant. 260°C compatible. Tin-silver-copper over tin over copper over steel (pins 1 – 3).
  • Tin-silver-copper over tin over nickel over copper (pins 4 – 5) terminations.
Environmental
Environmental:
RoHS compliant
Ambient temperature range:
–40°C to +125°C
Storage temperature range:
Component: –40°C to +165°C.
Tray packaging: –40°C to +80°C
Maximum part temperature:
+165°C (ambient + temp rise)
Failures in Time (FIT) / Mean Time Between Failures (MTBF):
See FIT/MTBF Calculations

Performance curves

Temperature vs Current

Temperature vs Current

Schematics

cst2020schematic.gif

Physical characteristics

cst2020d.gif

dims_inches_mm.gif

General specification

Core Material:
Ferrite
Weight:
7 – 8.5 g
Packaging:
100 per tray

Washing

Moisture Sensitivity Level (MSL):
1 (unlimited floor life at <30°C / 85% relative humidity)
PCB Washing:
Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More Info.

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