Document 1100-1
Current Sense Transformers
CST2010
•
•
•
•
AEC-Q200 Grade 1 qualified (–40°C to +125°C ambient)
Sensed current up to 40 A; Frequency range up to 1 MHz
Very low primary DC resistance
500 Vrms, one minute isolation (hipot) between windings.
Core material
Ferrite
Terminations
RoHS compliant tin-silver over tin over nickel over phos
bronze
Weight
4.13 g
Ambient temperature
–40°C to +125°C
Maximum part temperature
+165°C (ambient + temp rise)
Storage temperature
Component: –40°C to +125°C.
Tape and reel Packaging: –40°C to +80°C
Resistance to soldering heat
Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
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
Packaging
300/13″ reel; Plastic tape: 32 mm wide, 0.5 mm thick,
20 mm pocket spacing, 10.6 mm pocket depth
PCB washing
Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See
Doc787_PCB_Washing.pdf.
Part number
1
CST2010-020L_
CST2010-030L_
CST2010-040L_
CST2010-050L_
CST2010-060L_
CST2010-070L_
CST2010-080L_
CST2010-100L_
CST2010-125L_
CST2010-150L_
CST2010-200L_
Turns (N)
pri : sec
1
:
20
1
:
30
1
:
40
1
:
50
1
:
60
1
:
70
1
:
80
1
:
100
1
:
125
1
:
150
1
:
200
Inductance
2
min (mH)
0.34
0.76
1.36
2.12
3.06
4.16
5.44
8.50
13.3
19.2
34.0
DCR max
(Ohms)
pri
sec
0.00036
0.180
0.00036
0.265
0.00036
0.560
0.00036
0.705
0.00036
0.850
0.00036
1.00
0.00036
1.15
0.00036
1.45
0.00036
1.85
0.00036
2.25
0.00036
4.06
Frequency
range
(kHz)
10 – 1000
7 – 1000
5 – 1000
4 – 1000
3 – 1000
3 – 1000
2 – 1000
2 – 1000
2 – 1000
1 – 1000
1 – 1000
Volt-time
product
3
(Vµsec)
50.8
76.2
101.6
127.0
152.4
177.8
203.2
254.0
317.5
381.0
508.0
Sensed
current
I
in
4
max (A)
40
40
40
40
40
40
40
40
40
40
40
Terminating
resistance R
T
5
(Ohms)
0.5
0.8
1.0
1.3
1.5
1.8
2.0
2.5
3.1
3.8
5.0
1. When ordering, please specify
packaging
code:
CST2010-200LD
Packaging: D
= 13″ machine-ready reel. EIA-481 embossed plastic
tape (300 parts per full reel).
B
= Less than full reel. In tape, but not machine ready.
To have a leader and trailer added ($25 charge), use
code letter D instead.
2. Inductance measured between secondary pins at 1 kHz, 0.1 Vrms,
0 Adc.
3. Maximum volt-time product is for the secondary, based on 2000 Gauss.
4. Primary current of 40 A causes less than 25°C temperature rise from
25°C ambient. Higher current causes a greater temperature rise (see
Temperature Rise vs Current curve).
5. Terminating resistance (R
T
) 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
T
= V
out
× N
sec
/
I
in.
6 Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Typical Circuit
11
2
+
I
in
Pri
(1 turn)
Sec
I
(N turns)
out
R
T
V
out
12
4
–
Specifications subject to change
US
+1-847-639-6400 sales@coilcraft.com
without notice.
Please check our website for latest information.
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 1100-1
Revised 04/25/16
© 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.
Document 1100-2
CST2010 SMT Current Sense Transformers
Temperature Rise vs Current
45
40
Temperature rise (from 25°C)
35
30
25
20
15
10
5
0
0
5
10
15
20
25
30
35
40
45
50
Current (A rms)
Dimensions
Dot indicates pin 1
0.413
max
10,50
0.573
14,55 max
0.650
min
16,51
0.784
max
19,91
0.512 ±0.004
13,0 ±0,1
10
11
1
0.004 /0,10
Recommended
Land Pattern
0.092
2,34
0.0236
0,60
0.047
1,19
1
2
3
11
0.168 × 0.285
(2)
4,27 × 7,24
10
9
0.4425
11,24
12
8
7
6
6
12
5
0.100
2,54
0.100
2,54
4
5
Dimensions are in
inches
mm
0.110 × 0.240 (2)
2,80 × 6,10
0.356
9,04
0.356
9,04
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 1100-2
Revised 04/25/16
© 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.
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