© Coilcraft, Inc. 2009
Specifications subject to change without notice.
Please check our website for latest information.
50/60HzCurrentSensing 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 sensitivity may
be changed by adjusting the value of the terminating
resistance (RT). These parts also can be used to mea-
sure 400 Hz line currents.
To request free evaluation samples, contact Coilcraft
or visit www.coilcraft.com.
RT
Vout
CS2106
1
2
3
4
8
5
Iin
Weight:
19 g
Terminations: Tin-silver over copper
Packaging:
30 per tray
Typical Circuit
Frequency
Sensed
R
T for
Part
Turns (N)
Inductance1
DCR max (Ohms)
range2
current
1.0 V
out
number
pri : sec
min (mH)
1,2 – 3,4
8 – 5
(Hz)
range I
in
from 10 A I
in
3
CS2106L
1 : 500
75
0.007
26
50 – 400
0.5 A – 20 A
68 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. Varying terminating resistance increases or decreases output Voltage/Ampere in approximate proportion to the ratio RT / 68.
4. Operating temperature range –40°C to +85°C.
5. Electrical specifications at 25°C.
0
0.5
1.0
1.5
2.0
0
5
10
15
20
Current (Amperes rms)
Typical Response (with RT = 68 Ohms)
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