US
UK
Taiwan
China
Singapore
+1-847-639-6400 sales@coilcraft.com
+44-1236-730595 sales@coilcraft-europe.com
+886-2-2264 3646 sales@coilcraft.com.tw
+86-21-6218 8074 sales@coilcraft.com.cn
+ 65-6484 8412 sales@coilcraft.com.sg
© Coilcraft Inc. 2018
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
50/60 Hz Current Sense Transformer
Document 150
Document 150 Revised 12/29/09
This Coilcraft current sense transformer is intended for
use in measuring 50/60 Hz line currents from 0.5 to
20 Amperes rms. Typical application shown below yields
an output of 0.1 Volt per Ampere. The output voltage may
be changed by adjusting the value of the terminating
resistance (RT). These parts also can be used to measure
400 Hz line currents.
To request free evaluation samples, contact Coilcraft or
visit www.coilcraft.com.
RTVout
CS2106
1
2
3
4
8
5
Iin
Specifications
Part number CS2106L
DCR (1,2-3,4) 0.007 Ohms max
DCR (8-5) 26 Ohms max
Isolation 2500 Vrms between
windings
1. Operating temperature range –40°C to +85°C.
2. Electrical specifications at 25°C.
Weight 19 g
Terminations Tin-silver over tin over nickel over copper
Packaging 30 per tray
Isolation (hipot) 2500 Vrms, one minute, between windings
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /
85% relative humidity)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
PCB washing Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf
Typical Circuit
Frequency Sensed RT for
Part Turns (N) Inductance1 DCR max (Ohms) range2 current 1.0 Vout
number pri : sec min (mH) 1,2 – 3,4 8 – 5 (Hz) range Iin from 10 A Iin3
CS2106L 1 : 500 75 0.007 26 50 – 400 0.5 A – 20 A 50 Ohms
1. Inductance is for the secondary, tested at 1 kHz, 0.1 Vrms.
2. Square wave response deteriorates above and below this frequency.
3. Use the following equation to determine the approximate change in output voltage/ input ampere when varying the terminating resistor:
Vout / Iin = 0.1 × (RT / 50).
4. Ambient temperature range –40°C to +85°C.
5. Electrical specifications at 25°C.
0
0.5
1.0
1.5
2.0
V
out
(Volts rms)
0510 15 20
Current (Amperes rms)
Typical Response (with RT = 50 Ohms)
Dimensions are in inches
mm
