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. 2017
This product may not be used in medical or high
risk applications without prior Coilcraft appr
oval.
Specification subject to change without notice.
Please check web site for latest infor
mation.
Current Sense Transformers CST4835
Document 915-1
DCR max Frequency Volt-time Sensed Terminating
Turns (N) Inductance2 (Ohms) range product3 current Iin4 resistance RT5
Part number1 pri : sec min (µH) pri sec (kHz) (Vµsec) max (A) (Ohms)
CST4835-020E_ 1 : 20 33 0.003 0.35 83 – 1000 6.0 7 2.9
CST4835-030E_ 1 : 30 74 0.003 0.90 56 – 1000 9.0 7 4.3
CST4835-040E_ 1 : 40 132 0.003 1.60 42 – 1000 12.0 7 5.7
CST4835-050E_ 1 : 50 205 0.003 2.50 33 – 1000 15.0 7 7.1
CST4835-060E_ 1 : 60 295 0.003 3.60 28 – 1000 18.0 7 8.6
CST4835-070E_ 1 : 70 400 0.003 4.60 24 – 1000 21.0 7 10.0
CST4835-100E_ 1 : 100 820 0.003 9.50 17 – 1000 30.0 7 14.3
CST4835-125E_ 1 : 125 1280 0.003 13.0 13 – 1000 37.5 7 17.9
CST4835-150E_ 1 : 150 1800 0.003 21.0 11 – 1000 45.0 7 21.4
1. When ordering, please specify packaging code:
CST4835-150EC
Packaging: C = 7″ machine-ready reel. EIA-481 embossed plastic
tape (500 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 C instead.
D = 13″ machine-ready reel. EIA-481 embossed plastic
tape (2200 parts per full reel).
2. Inductance measured between secondary pins at 100 kHz, 0.1 Vrms,
0 Adc.
3. Maximum volt-time product is for the secondary, based on 2000 Gauss.
4. Primary current of 7 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 (RT) value is based on 1 Volt output with 7 Amps
flowing through the primary. Varying terminating resistance increases or
decreases output Voltage/Ampere according to the following equation:
RT = Vout × Nsec / Iin.
Core material Ferrite
Environmental RoHS compliant, halogen free
Terminations RoHS compliant silver over nickel over phos bronze.
Weight 115 – 122 mg
Ambient temperature –40°C to +125°C
Maximum part temperature +165°C (ambient + temp rise)
Storage temperature Component: –40°C to +165°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 500/7″ reel; 2200/13″ reel; Plastic tape: 12 mm wide,
0.35 mm thick, 8 mm pocket spacing, 3.6 mm pocket depth
PCB washing Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf.
• AEC-Q200 Grade 1 qualified (–40°C to +125°C ambient)
• Miniature SMT design, only 4.5 × 4.8 mm footprint
• 500 Vrms, one minute isolation (hipot) between windings
• Designed for use up to 1 MHz to sense continuous currents
to 7 Amps
Document 915-1 Revised 04/25/16
4
Sec
(N turns)
Pri
(1 turn)
1–
Vout
Iin
+
32
RT
Iout
6 Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
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. 2017
This product may not be used in medical or high
risk applications without prior Coilcraft appr
oval.
Specification subject to change without notice.
Please check web site for latest infor
mation.
CST4835 Series SMT Current Sense Transformers
Document 915-2
Document 915-2 Revised 04/25/16
Temperature Rise vs Current
Dimensions are in inches
mm
50
40
30
20
0
10
15
5
25
35
45
Temperature rise (from 25°C)
Current (A rms)
421357
08
9
612
10 11
2
123
max
max
Dash
number Internal
code
max
0.177
4,5
0.138
3,5
0.028
0,7
0.016
0,40 ±0,05
±0.002
1
23
4
0.049
1,25
0.135
3,425
0.098
2,50
0.098
2,5
0.033
0,85
Recommended
Land Pattern
0.189
4,8
0.150
3,8
0.138
3,5
0.104
2,65
0.165 ±0.008
4,20 ±0,20
0.039
0,98
0.010 ±0.002
0,25 ±0,05
Unless otherwise specified, tolerances
are ±0.004 in/0,10 mm.
*Includes solder applied to side terminal.
*
XXXE X
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Coilcraft:
CST4835-030EC CST4835-125EC CST4835-020EB CST4835-150EC CST4835-060EC CST4835-050EB
CST4835-100EB CST4835-070EB CST4835-150EB CST4835-050EC CST4835-020EC CST4835-040EB
CST4835-060EB CST4835-070EC CST4835-030EB CST4835-125EB CST4835-040EC CST4835-100EC
