®
LOW COST POWER INDUCTORS
GENERAL
Coiltronics Low Cost Power Inductors are
manufactured using low loss powdered iron cores. These
toroidal inductors deliver stable electrical operating
characteristics with low radiated fields for a wide range of
user applications.
Low Cost Power Inductors are constructed to
maximize inductor efficiency by minimizing copper losses.
This ensures the lowest possible temperature rise at the
maximum current rating.
These devices are available in vertical and horizontal
self leaded and header mounted configurations. This
offers the designer several mounting options for flexibility
in today’s high density electronic packages.
Low Cost Power Inductors are designed and
manufactured in accordance with the highest standards
for quality and reliability.
FEATURE - BENEFITS
• Powdered iron cores provide low cost solutions to
power inductor applications.
• Available with vertical leads, horizontal leads, or header
mounts.
• Inductance values range from
10 to 1000 µH.
• Current values range from
1.5 to 31.5 Amps.
• Off-the-shelf availability.
Information furnished herein is believed to be accurate
and reliable. However, Cooper Electronic Technologies
cannot assume responsibility for the use of any of our
components, nor for any liabilities which may result from
component use. Cooper Electronic Technologies reserves
the right to change component specifications without
notice.
Life Support Policy:
Cooper Electronic Technologies does
not authorize the use of any of its products for use in life
support devices or systems without the express written
approval of an officer of the Company. Life support
systems are devices which support or sustain life, and
whose failure to perform, when properly used in
accordance with instructions for use provided in the
labeling, can be reasonably expected to result in
significant injury to the user.
ENVIRONMENTAL SPECIFICATIONS
• Storage Temperature Range:
-40°C to +105°C.
• Operating Ambient Temperature Range:
-40°C to +75°C
Range is application specific
• Meets UL 94V-O Flammability Standard
®
LOW COST POWER INDUCTORS
LOW COST POWER INDUCTOR FAMILY TABLE
Vertical
Part Number
CTX10-1-52
CTX20-1-52
CTX50-1-52
CTX100-1-52
CTX150-1-52
CTX250-1-52
CTX500-1-52
CTX750-1-52
CTX1000-1-52
CTX10-2-52
CTX20-2-52
CTX50-2-52
CTX100-2-52
CTX150-2-52
CTX250-2-52
CTX500-2-52
CTX750-2-52
CTX10-5-52
CTX20-5-52
CTX50-5-52
CTX100-5-52
CTX150-5-52
CTX250-5-52
CTX10-7-52
CTX20-7-52
CTX50-7-52
CTX100-7-52
CTX150-7-52
CTX10-10-52
CTX20-10-52
CTX50-10-52
CTX100-10-52
CTX10-16-52
CTX20-16-52
Horizontal
Part Number
CTX10-1-52LP
CTX20-1-52LP
CTX50-1-52LP
CTX100-1-52LP
CTX150-1-52LP
CTX250-1-52LP
CTX500-1-52LP
CTX750-1-52LP
CTX1000-1-52LP
CTX10-2-52LP
CTX20-2-52LP
CTX50-2-52LP
CTX100-2-52LP
CTX150-2-52LP
CTX250-2-52LP
CTX500-2-52LP
CTX750-2-52LP
CTX10-5-52LP
CTX20-5-52LP
CTX50-5-52LP
CTX100-5-52LP
CTX150-5-52LP
CTX250-5-52LP
CTX10-7-52LP
CTX20-7-52LP
CTX50-7-52LP
CTX100-7-52LP
CTX150-7-52LP
CTX10-10-52LP
CTX20-10-52LP
CTX50-10-52LP
CTX100-10-52LP
CTX10-16-52LP
CTX20-16-52LP
Header Mounted
Part Number
CTX10-1-52M
CTX20-1-52M
CTX50-1-52M
CTX100-1-52M
CTX150-1-52M
CTX250-1-52M
CTX500-1-52M
CTX750-1-52M
CTX1000-1-52M
CTX10-2-52M
CTX20-2-52M
CTX50-2-52M
CTX100-2-52M
CTX150-2-52M
CTX250-2-52M
CTX500-2-52M
CTX750-2-52M
CTX10-5-52M
CTX20-5-52M
CTX50-5-52M
CTX100-5-52M
CTX150-5-52M
Inductance
µH (rated)
10
20
50
100
150
250
500
750
1000
10
20
50
100
150
250
500
750
10
20
50
100
150
250
10
20
50
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)
Amperes
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
Energy
(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
CTX10-7-52M
CTX20-7-52M
CTX50-7-52M
Notes: (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 I
DC
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 I
SAT
. For other current levels see Chart 1.
(6) Maximum D.C. resistance at 20°C.
Typical Inductance and Energy vs DC Current
1000
800
600
500
0
20
40
50
60
70
80
Winding Loss Derating with Core Loss
300
200
% of Losses from Irms (maximum)
400
% of OCL or % of Energy
500
kH
z
kH
z
kH
z
Hz
50
k
CHART 1
CHART 2
100
80
60
50
40
30
20
90
92
94
95
96
97
98
0
50
100
Inductance
150
200
250
Energy
300
% OF
I
SAT
% of applied Volt-µ Seconds
PM-4304 2/00
© Cooper Electronic
Technologies 2000
Visit us on the Web at www.cooperET.com
6000 Park of Commerce Blvd. Boca Raton, Florida 33487
Tel: +1-561-241-7876 Toll Free: +1-888-414-2645 Fax: +1-561-241-9339
This bulletin is intended to present product design solutions and technical information that will help the end user with design applications. Cooper
Electronic Technologies reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of
any products. Cooper Electronic Technologies also reserves the right to change or update, without notice, any technical information contained in this
bulletin. Once a product has been selected, it should be tested by the user in all possible applications.
1000
100
200
300
400
500
600
800
10
99
40
50
60
20
30
10
80
20
kH
z
200
100
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