LOW COST POWER INDUCTORS
Toroidal Inductors
Description
RoHS
2002/95/EC
• Low loss, powdered iron cores with stable
electrical operating characteristics maximize
inductor efficiency by minimizing copper losses
• Available in vertical and horizontal self leaded and
header mounted configurations
• Inductance values range from 10uH to 1000uH
• Current values range from 1.5 to 29.5 Amps
• Meets UL 94V-0 flammability standard
• Powder Iron core material
Applications
• Filters
• Buck and boost switches
• Chokes
Environmental Data
• Storage temperature range: -40°C to +105°C
• Operating ambient temperature range: -40°C to +75°C
(range is application specific)
Packaging
• Supplied in bulk packaging
Family Table
Ver tical
Par t Number
CTX10-1-52-R
CTX20-1-52-R
CTX50-1-52-R
CTX100-1-52-R
CTX150-1-52-R
CTX250-1-52-R
CTX500-1-52-R
CTX750-1-52-R
CTX1000-1-52-R
CTX10-2-52-R
CTX20-2-52-R
CTX50-2-52-R
CTX100-2-52-R
CTX150-2-52-R
CTX250-2-52-R
CTX500-2-52-R
CTX750-2-52-R
CTX10-5-52-R
CTX20-5-52-R
CTX50-5-52-R
CTX100-5-52-R
CTX150-5-52-R
CTX250-5-52-R
CTX10-7-52-R
CTX20-7-52-R
CTX50-7-52-R
CTX100-7-52-R
CTX150-7-52-R
CTX10-10-52-R
CTX20-10-52-R
CTX50-10-52-R
CTX100-10-52-R
CTX10-16-52-R
CTX20-16-52-R
Notes:
Horizontal
Par t Number
CTX10-1-52LP-R
CTX20-1-52LP-R
CTX50-1-52LP-R
CTX100-1-52LP-R
CTX150-1-52LP-R
CTX250-1-52LP-R
CTX500-1-52LP-R
CTX750-1-52LP-R
CTX1000-1-52LPR
CTX10-2-52LP-R
CTX20-2-52LP-R
CTX50-2-52LP-R
CTX100-2-52LP-R
CTX150-2-52LP-R
CTX250-2-52LP-R
CTX500-2-52LP-R
CTX750-2-52LP-R
CTX10-5-52LP-R
CTX20-5-52LP-R
CTX50-5-52LP-R
CTX100-5-52LP-R
CTX150-5-52LP-R
CTX250-5-52LP-R
CTX10-7-52LP-R
CTX20-7-52LP-R
CTX50-7-52LP-R
CTX100-7-52LP-R
CTX150-7-52LP-R
CTX10-10-52LP-R
CTX20-10-52LP-R
CTX50-10-52LP-R
CTX100-10-52LPR
CTX10-16-52LP-R
CTX20-16-52LP-R
Header Mounted
Inductance
Par t Number
µH (rated)
CTX10-1-52M-R
10
CTX20-1-52M-R
20
CTX50-1-52M-R
50
CTX100-1-52M-R
100
CTX150-1-52M-R
150
CTX250-1-52M-R
250
CTX500-1-52M-R
500
CTX750-1-52M-R
750
CTX1000-1-52M-R
1000
CTX10-2-52M-R
10
20
CTX20-2-52M-R
CTX50-2-52M-R
50
CTX100-2-52M-R
100
CTX150-2-52M-R
150
CTX250-2-52M-R
250
500
CTX500-2-52M-R
CTX750-2-52M-R
750
CTX10-5-52M-R
10
CTX20-5-52M-R
20
CTX50-5-52M-R
50
CTX100-5-52M-R
100
CTX150-5-52M-R
150
250
CTX10-7-52M-R
10
CTX20-7-52M-R
20
50
CTX50-7-52M-R
100
150
10
20
50
100
10
20
OCL(1)
µH +/- 20%
10.14
20.22
50.29
100.40
151.70
250.90
505.00
754.40
1004.00
9.60
19.60
50.00
101.70
148.00
251.10
499.40
749.30
9.68
21.25
49.60
97.20
150.60
254.40
10.04
20.96
52.27
101.40
152.80
10.04
21.17
52.37
99.38
9.90
19.24
I DC(2)
Amper es
2.4
1.8
2.6
2.5
2.1
1.9
1.7
1.8
1.5
4.7
3.2
4.9
4.4
4.3
4.2
3.1
3.4
8.7
7.8
7.6
8.2
7.7
9.2
11.4
11.4
10.5
12.0
12.8
16.9
16.0
13.9
17.6
27.3
31.5
I SAT(3)
Amperes
2.1
2.2
2.7
2.4
2.3
2.2
1.9
2.4
2.1
4.5
3.2
4.9
4.3
4.0
4.2
3.3
3.4
11.1
9.3
9.4
7.5
7.5
8.1
13.5
14.5
10.2
9.1
10.5
20.9
16.0
12.7
13.0
29.3
29.5
Volt-µSec(4)
VµS
5.4
7.8
16.3
27.5
35.7
47.8
77.9
114.3
131.9
6.6
9.4
21.3
35.0
47.6
66.0
104.0
147.3
9.4
16.0
29.3
45.7
66.0
102.4
11.0
19.1
33.5
54.2
79.3
13.2
21.3
38.9
64.0
16.9
28.1
Ener gy(5)
µJ
15
36
130
197
283
421
645
1530
1530
68
69
420
643
829
1540
1890
2960
417
643
1530
1890
2960
5860
640
1540
1900
2960
5900
1530
1900
2960
5880
2970
5860
DCR ( Ω)(6)
max
0.0481
0.0829
0.0715
0.1060
0.1620
0.2210
0.3610
0.4340
0.6380
0.0183
0.0392
0.0326
0.0534
0.0719
0.0833
0.1830
0.2080
0.0104
0.0260
0.0248
0.0267
0.0401
0.0400
0.0080
0.0110
0.0163
0.0167
0.0204
0.0051
0.0070
0.0124
0.0109
0.0032
0.0034
(1) Open circuit inductance test parameters: 100kHz, 0.250Vrms, 0 Adc.
(2) DC current for an approximate ∆T of 30°C at 75°C Ambient with no core loss. See Chart 2 for derating of IDC with core loss.
(3) Peak current for an approximate 30% roll-off in OCL. For other current levels see Chart 1.
(4) Applied Volt-Time product (VµS) across the inductor. This value represents the VµS at 100kHz necessary to generate a core loss equal to 10% of the total
losses for 30°C rise. For other frequencies and operating levels see Chart 2. (Note: skin effect losses not included.)
(5) Energy storage (µJ) at ISAT. For other current levels see Chart 1.
(6) Maximum D.C. resistance at 20°C.
LOW COST POWER INDUCTORS
Toroidal Inductors
Mechanical Diagrams
Vertical and Horizontal Self Leaded Mounting Options
Ver tical P/N
See Figur e 1
CTX10-1-52-R
CTX20-1-52-R
CTX50-1-52-R
CTX100-1-52-R
CTX150-1-52-R
CTX250-1-52-R
CTX500-1-52-R
CTX750-1-52-R
CTX1000-1-52-R
CTX10-2-52-R
CTX20-2-52-R
CTX50-2-52-R
CTX100-2-52-R
CTX150-2-52-R
CTX250-2-52-R
CTX500-2-52-R
CTX750-2-52-R
CTX10-5-52-R
CTX20-5-52-R
CTX50-5-52-R
CTX100-5-52-R
CTX150-5-52-R
CTX250-5-52-R
CTX10-7-52-R
CTX20-7-52-R
CTX50-7-52-R
CTX100-7-52-R
CTX150-7-52-R
CTX10-10-52-R
CTX20-10-52-R
CTX50-10-52-R
CTX100-10-52-R
CTX10-16-52-R
CTX20-16-52-R
Horizontal P/N
See Figur e 2
CTX10-1-52LP-R
CTX20-1-52LP-R
CTX50-1-52LP-R
CTX100-1-52LP-R
CTX150-1-52LP-R
CTX250-1-52LP-R
CTX500-1-52LP-R
CTX750-1-52LP-R
CTX1000-1-52LP-R
CTX10-2-52LP-R
CTX20-2-52LP-R
CTX50-2-52LP-R
CTX100-2-52LP-R
CTX150-2-52LP-R
CTX250-2-52LP-R
CTX500-2-52LP-R
CTX750-2-52LP-R
CTX10-5-52LP-R
CTX20-5-52LP-R
CTX50-5-52LP-R
CTX100-5-52LP-R
CTX150-5-52LP-R
CTX250-5-52LP-R
CTX10-7-52LP-R
CTX20-7-52LP-R
CTX50-7-52LP-R
CTX100-7-52LP-R
CTX150-7-52LP-R
CTX10-10-52LP-R
CTX20-10-52LP-R
CTX50-10-52LP-R
CTX100-10-52LP-R
CTX10-16-52LP-R
CTX20-16-52LP-R
OD
(max)
8.6
9.1
16.2
15.5
20.7
20.9
24.0
29.8
29.8
12.7
12.5
21.6
24.0
30.6
31.2
36.7
43.3
22.2
24.5
32.3
37.8
46.4
53.7
25.7
32.4
39.0
48.5
54.5
34.0
40.5
47.5
57.0
50.3
59.0
ID
(typ)
0.0
0.0
4.2
4.2
6.6
6.0
9.0
11.7
11.7
0.0
0.0
6.1
8.8
11.2
9.1
11.7
19.9
5.4
8.8
10.1
11.2
18.8
18.8
6.5
8.5
10.8
17.1
17.1
7.0
9.0
17.1
15.0
13.0
13.0
Ht
(max)
4.7
6.7
9.0
12.4
9.4
13.0
15.3
17.4
17.1
7.8
7.5
13.6
16.6
11.4
19.0
14.8
18.2
13.9
16.6
18.9
16.8
19.8
24.3
18.0
19.8
16.8
21.8
25.4
21.4
18.0
21.3
27.5
24.0
28.0
X
(typ)
3.8
5.6
7.5
10.7
7.8
11.0
14.0
15.6
15.5
6.3
6.3
11.0
13.9
9.3
15.7
12.5
15.8
11.5
14.5
16.5
13.6
16.8
20.1
16.0
16.8
13.9
17.2
21.2
17.0
14.3
17.5
21.3
18.6
23.0
Y
(typ)
7.3
7.4
13.7
13.7
18.8
18.8
21.2
28.2
28.0
11.0
11.0
19.5
21.8
28.5
28.5
34.5
41.5
19.9
22.0
28.8
35.5
43.4
49.4
22.4
29.2
35.7
43.4
50.9
29.6
35.2
42.8
50.6
43.0
50.7
T
(typ)
0.42
0.37
0.58
0.58
0.52
0.52
0.52
0.52
0.46
0.71
0.58
0.89
0.89
0.80
0.89
0.71
0.80
1.11
0.89
1.11
1.24
1.24
1.38
1.38
1.38
1.38
1.73
1.73
1.73
1.73
1.73
2.15
2.41
2.69
H
(typ)
0.67
0.62
0.83
0.83
0.77
0.77
0.77
0.77
0.71
0.96
0.83
1.14
1.14
1.05
1.14
0.96
1.05
1.36
1.14
1.36
1.49
1.49
1.63
1.63
1.63
1.63
1.98
1.98
1.98
1.98
1.98
2.45
2.70
2.99
Note: All dimensions are in millimeters.
FIGURE 2
FIGURE 1
OD
ID
ID
OD
10.0 +/- 3
T dia.
Ht
Ht
10.0 +/- 3
VERTICAL
SELF LEADED
MOUNT
HORIZONTAL
SELF LEADED
MOUNT
T dia.
(typ.)
H dia
(typ.)
X
H dia.
(typ.)
Y
Drawings are not to scale.
LOW COST POWER INDUCTORS
Toroidal Inductors
Header Mounted Option
Header Mounted
Par t Number
CTX10-1-52M-R
CTX20-1-52M-R
CTX50-1-52M-R
CTX100-1-52M-R
CTX150-1-52M-R
CTX250-1-52M-R
CTX500-1-52M-R
CTX750-1-52M-R
CTX1000-1-52M-R
CTX10-2-52M-R
CTX20-2-52M-R
CTX50-2-52M-R
CTX100-2-52M-R
CTX150-2-52M-R
CTX250-2-52M-R
CTX500-2-52M-R
CTX750-2-52M-R
CTX10-5-52M-R
CTX20-5-52M-R
CTX50-5-52M-R
CTX100-5-52M-R
CTX150-5-52M-R
CTX10-7-52M-R
CTX20-7-52M-R
CTX50-7-52M-R
See
Figur e #
3
3
4
4
4
5
5
5
5
3
3
5
5
5
5
5
5
5
5
5
5
5
5
5
5
OD
(max)
8.6
9.1
16.2
15.5
20.7
20.9
24.0
29.8
29.8
12.7
12.5
21.6
24.0
30.6
31.2
36.7
43.3
22.2
24.5
32.3
37.8
46.4
25.7
32.4
39.0
A
(max)
9.4
9.4
19.6
19.6
19.6
31.0
35.4
35.4
35.4
13.6
13.6
31.0
35.4
31.0
35.4
31.0
35.4
31.0
35.4
35.4
35.4
35.4
35.4
35.4
35.4
B
(max)
9.4
9.4
16.1
16.1
16.1
16.0
21.7
21.7
21.7
11.4
11.4
16.0
21.7
16.0
21.7
16.0
21.7
16.0
21.7
21.7
21.7
21.7
21.7
21.7
21.7
C
(max)
6.9
9.0
20.0
19.7
24.2
22.5
25.0
31.6
31.2
11.7
11.4
23.5
26.0
32.5
33.4
38.4
45.4
22.7
25.5
33.7
40.2
47.0
26.7
34.2
40.3
X
(typ)
6.5
6.5
15.3
15.3
15.3
20.3
23.0
23.0
23.0
10.8
10.8
20.3
23.0
20.3
23.0
20.3
23.0
20.3
23.0
23.0
23.0
23.0
23.0
23.0
23.0
Y
(typ)
6.5
6.5
6.4
6.4
6.4
10.2
15.4
15.4
15.4
7.5
7.5
10.2
15.4
10.2
15.4
10.2
15.4
10.2
15.4
15.4
15.4
15.4
15.4
15.4
15.4
T
(typ)
—
—
—
—
—
1.20
1.20
1.20
1.20
—
—
1.20
1.20
1.20
1.20
1.20
1.20
1.20
1.20
1.11
1.24
1.24
1.38
1.38
1.38
H
(typ)
—
—
—
—
—
1.45
1.45
1.45
1.45
—
—
1.45
1.45
1.45
1.45
1.45
1.45
1.45
1.45
1.36
1.49
1.49
1.63
1.63
1.63
Note: All dimensions are in millimeters.
FIGURE 3
CONNECTION
DIAGRAM
FIGURE 4
A
FIGURE 5
OD
OD
2
3
1
B
C
1
C
4
3
4.25+/- 1.5
4.0
0+
+//-- 1
0 dia.
dia.
1.00
(typ.)
C
3.8
3.
8+
+//- 1
0.50 dia.
0.50
dia.
(typ. )
(typ.)
A
A
1
4
B
2
0.70dia. (typ.)
2
1
4
2
3
Pins 1 & 3:
Pins
3: T dia.
dia.
Pins
Pin
s 2 & 4:
4: 1.2
1.20
0 dia.
dia.
3
3
2
Holes 1 & 3
Holes
3:: H dia.
Holes
Hole
s2&4
4:: 1.45
1.45 dia. 3
1
4
1.25dia. (typ.)
Y
2
3
1
4
Y
Y
4
1
HEADER MOUNT
X
X
X
Drawings are not to scale.
Figure3
Figure4
B
Figure5
LOW COST POWER INDUCTORS
Toroidal Inductors
Inductance Characteristics
1000
0
800
20
600
500
40
50
60
80
60
50
40
30
300
% OF I SAT
% of applied V
Energy
Core Loss
0
40
50
60
70
z
z
kH
20
z
kH
kH
50
100
200
kH
kH
z
z
80
500
% of Losses from Irms (maximum)
20
90
92
94
95
96
97
98
800
1000
500
600
400
300
200
100
80
40
50
60
30
20
10
99
% OF I SAT
% of applied Volt-µ Seconds
Energy
PM-4304 3/07
© Cooper Electronic
Technologies 2007
100
250
80
200
40
50
60
150
30
100
50
Inductance
300
k
97
20
0
250
kH
94
95
96
99
10
200
100
92
98
20
150
z
z
90
200
100
80
kH
200
70
10
% of OCL or % of Energy
300
500
% of Losses from Irms (maximum)
400
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