Technical Data 4304
Effective July 2017
Supersedes August 2006
LCPI
Toroid power inductors
Product features
•Low loss, iron powder 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 10 uH to 1000 uH
•Current values range from 1.5 A to 29.5 A
•Meets UL 94V-0 flammability standard
•Iron powder core material
Applications
•Filters
•Buck and boost switches
•Chokes
Environmental Data
•Storage temperature range (Component):
-40 °C to +105 °C
•Operating temperature range: -40 °C to +105 °C
(ambient plus self-temperature rise)
2
Technical Data 4304
Effective July 2017
LCPI
Toroid power inductors
www.eaton.com/electronics
Product Specifications
VVeerrttiiccaallHHoorriizzoonnttaallHHeeaaddeerr MMoouunntteeddOOCCLL((11))II DDCC((22))II SSAATT((33))
VVoolltt--µµsec
(4)
EEnneerrggyy((55))DDCCRR ((ΩΩ))((66))
PPaarrtt NNuummbbeerrPPaarrtt NNuummbbeerrPPaarrtt NNuummbbeerrµµHH ++//-- 2200%%
VVµµs
µµJJmmaaxx
CTX10-1-52-R CTX10-1-52LP-R CTX10-1-52M-R 10.14 2.4 2.1 5.4 15 0.0481
CTX20-1-52-R CTX20-1-52LP-R CTX20-1-52M-R 20.22 1.8 2.2 7.8 36 0.0829
CTX50-1-52-R CTX50-1-52LP-R CTX50-1-52M-R 50.29 2.6 2.7 16.3 130 0.0715
CTX100-1-52-R CTX100-1-52LP-R CTX100-1-52M-R 100.40 2.5 2.4 27.5 197 0.1060
CTX150-1-52-R CTX150-1-52LP-R CTX150-1-52M-R 151.70 2.1 2.3 35.7 283 0.1620
CTX250-1-52-R CTX250-1-52LP-R CTX250-1-52M-R 250.90 1.9 2.2 47.8 421 0.2210
CTX500-1-52-R CTX500-1-52LP-R CTX500-1-52M-R 505.00 1.7 1.9 77.9 645 0.3610
CTX750-1-52-R CTX750-1-52LP-R CTX750-1-52M-R 754.40 1.8 2.4 114.3 1530 0.4340
CTX1000-1-52-R CTX1000-1-52LPR CTX1000-1-52M-R 1004.00 1.5 2.1 131.9 1530 0.6380
CTX10-2-52-R CTX10-2-52LP-R CTX10-2-52M-R 9.60 4.7 4.5 6.6 68 0.0183
CTX20-2-52-R CTX20-2-52LP-R CTX20-2-52M-R 19.60 3.2 3.2 9.4 69 0.0392
CTX50-2-52-R CTX50-2-52LP-R CTX50-2-52M-R 50.00 4.9 4.9 21.3 420 0.0326
CTX100-2-52-R CTX100-2-52LP-R CTX100-2-52M-R 101.70 4.4 4.3 35.0 643 0.0534
CTX150-2-52-R CTX150-2-52LP-R CTX150-2-52M-R 148.00 4.3 4.0 47.6 829 0.0719
CTX250-2-52-R CTX250-2-52LP-R CTX250-2-52M-R 251.10 4.2 4.2 66.0 1540 0.0833
CTX500-2-52-R CTX500-2-52LP-R CTX500-2-52M-R 499.40 3.1 3.3 104.0 1890 0.1830
CTX750-2-52-R CTX750-2-52LP-R CTX750-2-52M-R 749.30 3.4 3.4 147.3 2960 0.2080
CTX10-5-52-R CTX10-5-52LP-R CTX10-5-52M-R 9.68 8.7 11.1 9.4 417 0.0104
CTX20-5-52-R CTX20-5-52LP-R CTX20-5-52M-R 21.25 7.8 9.3 16.0 643 0.0260
CTX50-5-52-R CTX50-5-52LP-R CTX50-5-52M-R 49.60 7.6 9.4 29.3 1530 0.0248
CTX100-5-52-R CTX100-5-52LP-R CTX100-5-52M-R 97.20 8.2 7.5 45.7 1890 0.0267
CTX150-5-52-R CTX150-5-52LP-R CTX150-5-52M-R 150.60 7.7 7.5 66.0 2960 0.0401
CTX250-5-52-R CTX250-5-52LP-R 254.40 9.2 8.1 102.4 5860 0.0400
CTX10-7-52-R CTX10-7-52LP-R CTX10-7-52M-R 10.04 11.4 13.5 11.0 640 0.0080
CTX20-7-52-R CTX20-7-52LP-R CTX20-7-52M-R 20.96 11.4 14.5 19.1 1540 0.0110
CTX50-7-52-R CTX50-7-52LP-R CTX50-7-52M-R 52.27 10.5 10.2 33.5 1900 0.0163
CTX100-7-52-R CTX100-7-52LP-R 101.40 12.0 9.1 54.2 2960 0.0167
CTX150-7-52-R CTX150-7-52LP-R 152.80 12.8 10.5 79.3 5900 0.0204
CTX10-10-52-R CTX10-10-52LP-R 10.04 16.9 20.9 13.2 1530 0.0051
CTX20-10-52-R CTX20-10-52LP-R 21.17 16.0 16.0 21.3 1900 0.0070
CTX50-10-52-R CTX50-10-52LP-R 52.37 13.9 12.7 38.9 2960 0.0124
CTX100-10-52-R CTX100-10-52LPR 99.38 17.6 13.0 64.0 5880 0.0109
CTX10-16-52-R CTX10-16-52LP-R 9.90 27.3 29.3 16.9 2970 0.0032
CTX20-16-52-R CTX20-16-52LP-R 19.24 31.5 29.5 28.1 5860 0.0034
Notes: (1) Open circuit inductance test parameters: 100 kHz, 0.250 Vrms, 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 IIdc 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 100 kHz 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.
(A)
(A)
3
Technical Data 4304
Effective July 2017
www.eaton.com/electronics
LCPI
Toroid power inductors
Dimensions- mm
Vertical and Horizontal Self Leaded Mounting Options
VVeerrttiiccaall PP//NNHHoorriizzoonnttaall PP//NNOODDIIDDHHttXXYYTTHH
SSeeee FFiigguurree 11SSeeee FFiigguurree 22((mmaaxx))((ttyypp))((mmaaxx))((ttyypp))((ttyypp))((ttyypp))((ttyypp))
CTX10-1-52-R CTX10-1-52LP-R 8.6 0.0 4.7 3.8 7.3 0.42 0.67
CTX20-1-52-R CTX20-1-52LP-R 9.1 0.0 6.7 5.6 7.4 0.37 0.62
CTX50-1-52-R CTX50-1-52LP-R 16.2 4.2 9.0 7.5 13.7 0.58 0.83
CTX100-1-52-R CTX100-1-52LP-R 15.5 4.2 12.4 10.7 13.7 0.58 0.83
CTX150-1-52-R CTX150-1-52LP-R 20.7 6.6 9.4 7.8 18.8 0.52 0.77
CTX250-1-52-R CTX250-1-52LP-R 20.9 6.0 13.0 11.0 18.8 0.52 0.77
CTX500-1-52-R CTX500-1-52LP-R 24.0 9.0 15.3 14.0 21.2 0.52 0.77
CTX750-1-52-R CTX750-1-52LP-R 29.8 11.7 17.4 15.6 28.2 0.52 0.77
CTX1000-1-52-R CTX1000-1-52LP-R 29.8 11.7 17.1 15.5 28.0 0.46 0.71
CTX10-2-52-R CTX10-2-52LP-R 12.7 0.0 7.8 6.3 11.0 0.71 0.96
CTX20-2-52-R CTX20-2-52LP-R 12.5 0.0 7.5 6.3 11.0 0.58 0.83
CTX50-2-52-R CTX50-2-52LP-R 21.6 6.1 13.6 11.0 19.5 0.89 1.14
CTX100-2-52-R CTX100-2-52LP-R 24.0 8.8 16.6 13.9 21.8 0.89 1.14
CTX150-2-52-R CTX150-2-52LP-R 30.6 11.2 11.4 9.3 28.5 0.80 1.05
CTX250-2-52-R CTX250-2-52LP-R 31.2 9.1 19.0 15.7 28.5 0.89 1.14
CTX500-2-52-R CTX500-2-52LP-R 36.7 11.7 14.8 12.5 34.5 0.71 0.96
CTX750-2-52-R CTX750-2-52LP-R 43.3 19.9 18.2 15.8 41.5 0.80 1.05
CTX10-5-52-R CTX10-5-52LP-R 22.2 5.4 13.9 11.5 19.9 1.11 1.36
CTX20-5-52-R CTX20-5-52LP-R 24.5 8.8 16.6 14.5 22.0 0.89 1.14
CTX50-5-52-R CTX50-5-52LP-R 32.3 10.1 18.9 16.5 28.8 1.11 1.36
CTX100-5-52-R CTX100-5-52LP-R 37.8 11.2 16.8 13.6 35.5 1.24 1.49
CTX150-5-52-R CTX150-5-52LP-R 46.4 18.8 19.8 16.8 43.4 1.24 1.49
CTX250-5-52-R CTX250-5-52LP-R 53.7 18.8 24.3 20.1 49.4 1.38 1.63
CTX10-7-52-R CTX10-7-52LP-R 25.7 6.5 18.0 16.0 22.4 1.38 1.63
CTX20-7-52-R CTX20-7-52LP-R 32.4 8.5 19.8 16.8 29.2 1.38 1.63
CTX50-7-52-R CTX50-7-52LP-R 39.0 10.8 16.8 13.9 35.7 1.38 1.63
CTX100-7-52-R CTX100-7-52LP-R 48.5 17.1 21.8 17.2 43.4 1.73 1.98
CTX150-7-52-R CTX150-7-52LP-R 54.5 17.1 25.4 21.2 50.9 1.73 1.98
CTX10-10-52-R CTX10-10-52LP-R 34.0 7.0 21.4 17.0 29.6 1.73 1.98
CTX20-10-52-R CTX20-10-52LP-R 40.5 9.0 18.0 14.3 35.2 1.73 1.98
CTX50-10-52-R CTX50-10-52LP-R 47.5 17.1 21.3 17.5 42.8 1.73 1.98
CTX100-10-52-R CTX100-10-52LP-R 57.0 15.0 27.5 21.3 50.6 2.15 2.45
CTX10-16-52-R CTX10-16-52LP-R 50.3 13.0 24.0 18.6 43.0 2.41 2.70
CTX20-16-52-R CTX20-16-52LP-R 59.0 13.0 28.0 23.0 50.7 2.69 2.99
Note: All dimensions are in millimeters.
HtHt
T dia.T dia.
(ty(typp..))
T dia.T dia.
10.0 +/- 310.0 +/- 3
HtHt
XX
10.0 +/- 310.0 +/- 3
ODOD
ODOD IDID IDID
YY
(ty(typp..))
H diaH dia
(ty(typp..))
H dia.H dia.
VERTICAL
SELF LEADED
MOUNT
HORIZONTAL
SELF LEADED
MOUNT
Drawings are not to scale.
FIGURE 1 FIGURE 2
4
LCPI
Toroid power inductors
www.eaton.com/electronics
Technical Data 4304
Effective July 2017
Dimensions- mm
HEADER MOUNT
Header Mounted Option
H
He
ea
ad
de
er
r M
Mo
ou
un
nt
te
ed
dS
Se
ee
eO
OD
DA
AB
BC
CX
XY
YT
TH
H
P
Pa
ar
rt
t N
Nu
um
mb
be
er
rF
Fi
ig
gu
ur
re
e #
#(
(m
ma
ax
x)
)(
(m
ma
ax
x)
)(
(m
ma
ax
x)
)(
(m
ma
ax
x)
)(
(t
ty
yp
p)
)(
(t
ty
yp
p)
)(
(t
ty
yp
p)
)(
(t
ty
yp
p)
)
CTX10-1-52M-R 3 8.6 9.4 9.4 6.9 6.5 6.5 — —
CTX20-1-52M-R 3 9.1 9.4 9.4 9.0 6.5 6.5 — —
CTX50-1-52M-R 4 16.2 19.6 16.1 20.0 15.3 6.4 — —
CTX100-1-52M-R 4 15.5 19.6 16.1 19.7 15.3 6.4 — —
CTX150-1-52M-R 4 20.7 19.6 16.1 24.2 15.3 6.4 — —
CTX250-1-52M-R 5 20.9 31.0 16.0 22.5 20.3 10.2 1.20 1.45
CTX500-1-52M-R 5 24.0 35.4 21.7 25.0 23.0 15.4 1.20 1.45
CTX750-1-52M-R 5 29.8 35.4 21.7 31.6 23.0 15.4 1.20 1.45
CTX1000-1-52M-R 5 29.8 35.4 21.7 31.2 23.0 15.4 1.20 1.45
CTX10-2-52M-R 3 12.7 13.6 11.4 11.7 10.8 7.5 — —
CTX20-2-52M-R 3 12.5 13.6 11.4 11.4 10.8 7.5 — —
CTX50-2-52M-R 5 21.6 31.0 16.0 23.5 20.3 10.2 1.20 1.45
CTX100-2-52M-R 5 24.0 35.4 21.7 26.0 23.0 15.4 1.20 1.45
CTX150-2-52M-R 5 30.6 31.0 16.0 32.5 20.3 10.2 1.20 1.45
CTX250-2-52M-R 5 31.2 35.4 21.7 33.4 23.0 15.4 1.20 1.45
CTX500-2-52M-R 5 36.7 31.0 16.0 38.4 20.3 10.2 1.20 1.45
CTX750-2-52M-R 5 43.3 35.4 21.7 45.4 23.0 15.4 1.20 1.45
CTX10-5-52M-R 5 22.2 31.0 16.0 22.7 20.3 10.2 1.20 1.45
CTX20-5-52M-R 5 24.5 35.4 21.7 25.5 23.0 15.4 1.20 1.45
CTX50-5-52M-R 5 32.3 35.4 21.7 33.7 23.0 15.4 1.11 1.36
CTX100-5-52M-R 5 37.8 35.4 21.7 40.2 23.0 15.4 1.24 1.49
CTX150-5-52M-R 5 46.4 35.4 21.7 47.0 23.0 15.4 1.24 1.49
CTX10-7-52M-R 5 25.7 35.4 21.7 26.7 23.0 15.4 1.38 1.63
CTX20-7-52M-R 5 32.4 35.4 21.7 34.2 23.0 15.4 1.38 1.63
CTX50-7-52M-R 5 39.0 35.4 21.7 40.3 23.0 15.4 1.38 1.63
Note: All dimensions are in millimeters.
Drawings are not to scale.
FIGURE 3 FIGURE 4 FIGURE 5
00.5.50d0diia.a.
(typ.(typ.(typ.)))
CC
3.3.8+8+//-- 11
YY
XX
BB
AA
22
22
33
33
11
11
44
44
00.70.70ddia.ia. ((typ.typ.))
CC
4.4.00+0+//---11
BB
YY
ODOD
22
22
33
33
11
1144
44
XX
AA
Figure4
11.25.25ddiia.a.(typ.)(typ.)
11.0.000d0diia.a.
(typ.)(typ.)
CC
ODOD
4.4.2255+/+/--1.51.5
BB
YY
PinPins1s1&3&3:Td:Tdiia.a.
PinPins2s2&4&4::11.2.20d0diia.a.
HoleHoles1s1&3&3:H:Hddia.ia.
HoleHoles2s2&4&4:1:1..4545ddia.ia.
AA
11
22
44
33
22
11
33
44
XX
CONNECTION
DIAGRAM
1
3
Technical Data 4304
Effective July 2017
LCPI
Toroid power inductors
5
www.eaton.com/electronics
0
20
40
50
60
70
80
90
20 kHz
50 kHz
100 kHz
200 kHz
500 kHz
% of Losses from Irms (maximum)
% of applied Volt-µ seconds
92
94
95
96
97
98
99
10
20
30
40
50
60
80
100
200
300
400
500
600
800
1000
1000
800
600
500
400
300
200
100
80
60
50
40
30
20
10
050
Inductance
% OF ISAT
% of OCL or % of Energy
Energy
100 150 200 250 300
Core loss
Inductance characteristics
© 2017 Eaton
All Rights Reserved
Printed in USA
Publication No. 4304
July 2017
Eaton is a registered trademark.
All other trademarks are property
of their respective owners.
Life Support Policy: Eaton 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.
Eaton reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Eaton also
reserves the right to change or update, without notice, any technical information contained in this bulletin.
Eaton
Electronics Division
1000 Eaton Boulevard
Cleveland, OH 44122
United States
www.eaton.com/electronics
Technical Data 4304
Effective July 2017
LCPI
Toroid power inductors
Wave solder profile- Through-hole components
Reflow soldering not recommended
