© Coilcraft, Inc. 2009
Specifications subject to change without notice.
Please check our website for latest information.
Document 131
Document 131
Revised 04/14/09
CurrentSensors-D18XX,CS1XXXSeries
Designed for use above 20 kHz, these sensors function
as the secondaries of a current transformer. The con-
ductor carrying the current to be measured is the “one
turn primary.” Sensitivity can be set at 1 Volt per Ampere
or at other desired values. It can also be doubled by
looping the conductor through the hole twice. Applica-
tions include sensing branch circuit overload, switcher
feedback, and detecting load drop or shutdown.
They come in a molded version (CS1XXX Series) or
encapsulated model (D18XX Series).
Coilcraft Designer’s Kit P403 contains samples of
the CS1050, 1100 and 1200 sensors, current trans-
former versions with equivalent ratings, plus two 50/
60 Hz current sensors. To order, contact Coilcraft or
visit http://order.coilcraft.com.
Sensed
Sensitivity
Terminating
Part
Inductance
current Iin
Vout
Iin
resistor
Color
number
Turns
min (mH)
max (A)
(V)
(A)
RT (Ohms)1
code
D1869L
50
5
10
1
1
50
Green
D1870L
100
20
24
1
1
100
Brown
D1871L
200
80
35
1
1
200
Red
CS1050L
50
5
10
1
1
50
CS1100L
100
20
24
1
1
100
CS1200L
200
80
35
1
1
200
CS1750L
750
1125
30
1
1
750
1. Varying terminating resistance will increase or decrease output Voltage/Ampere in conductor.
2. Operating temperature range -40°C to +85°C.
3. Electrical specifications at 25°C.
D1xx Series
Leads 3 and A are in phase per orientation shown above.
0.75
19,05
0.20
5,08
0.033 ±0.002
0,84 ±0,05
0.50 ±0.015
12,7 ±0,38
0.80
20,30
max
min
1
3
3
Date
code
Color
code
max
0.465
11,81
0.125
3,175
0.45
11,43
0.34
8,64
max
A
max
max
max
B
0.80
20,3
0.20
5,08
max
min
0.70
17,8
max
0.50 ±0.015
12,7 ±0,38
1
3
3
A
B
0.158/0.218
5,54
4,01/
0.036/0.030
0,91/0,76
0.375
9,53
max
CS1xxx Series
1
+
AB
Iin
R
T
3
−
Vout
Terminations: Tin-silver over copper
Weight:
4.0 – 4.5 g
Typical Circuit
Terminations: Tin-silver over copper
Weight:
5.3 – 5.8 g