CST4835

Document 915-1
Current Sense Transformers CST4835
• 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
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.
DCR max
(Ohms)
Turns (N) Inductance2
Part number1
pri : sec
min (µH)
pri sec
CST4835-020E_1 : 20
33
0.003
0.35
CST4835-030E_1 : 30
74
0.003
0.90
CST4835-040E_1 : 40
132
0.003
1.60
CST4835-050E_1 : 50
205
0.003
2.50
CST4835-060E_1 : 60
295
0.003
3.60
CST4835-070E_1 : 70
400
0.003
4.60
CST4835-100E_1 : 100
820
0.003
9.50
CST4835-125E_1 : 125
1280
0.003 13.0
CST4835-150E_1 : 150
1800
0.003 21.0
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.
FrequencyVolt-timeSensed Terminating
range
product3 current Iin4 resistance RT5
(kHz)
(Vµsec)
max (A)
(Ohms)
83 – 1000
6.0
7
2.9
56 – 1000
9.0
7
4.3
42 – 1000
12.0
7
5.7
33 – 1000
15.0
7
7.1
28 – 1000
18.0
7
8.6
24 – 1000
21.0
7
10.0
17 – 1000
30.0
7
14.3
13 – 1000
37.5
7
17.9
11 – 1000
45.0
7
21.4
6 Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
I in
4
2
Pri
(1 turn)
Sec
(N turns)
3
1
US +1-847-639-6400 [email protected]
UK +44-1236-730595 [email protected]
Taiwan +886-2-2264 3646 [email protected]
China +86-21-6218 8074 [email protected]
Singapore + 65-6484 8412 [email protected]
RT
Vout
Document 915-1 Revised 04/25/16
© Coilcraft Inc. 2016
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 915-2
CST4835 Series SMT Current Sense Transformers
Temperature Rise vs Current
Temperature rise (from 25°C)
50
45
40
35
30
25
20
15
10
5
0
0
1
2
3
4
5
6
7
8
9
10
11 12
Current (A rms)
Dimensions are in
inches
mm
US +1-847-639-6400 [email protected]
UK +44-1236-730595 [email protected]
Taiwan +886-2-2264 3646 [email protected]
China +86-21-6218 8074 [email protected]
Singapore + 65-6484 8412 [email protected]
Document 915-2 Revised 04/25/16
© Coilcraft Inc. 2016
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.
Similar pages