Technical Data DS4314 Effective July 2017
Supersedes June 2017
Product features
•Surface mount magnetics that can be used as
single or coupled inductors or 1:1 transformers
that provide isolation between two windings
•OCTA-PAC’s are designed around high
frequency, low loss core material
•ECONO-PAC’s are a lower cost version of OCTA-
PAC’s offering high saturation flux density, Iron
powder core material
•OCTA-PAC PLUS’s offer higher current ratings
and higher saturation flux densities than OCTA-
PAC and ECONO-PAC, Amorphous metal core
material
•Secure 4 Terminal Mounting
•Inductor more versatile inductance combination
by series or parallel connections
Applications
•Storage temperature range (component):
-40 °C to +125 °C
•Operating temperature range: -40 °C to +125 °C
(ambient plus self-temperature rise)
•Solder reflow temperature:
J-STD-020 (latest revision) compliant
ECONO-PAC™/OCTA-PAC® OCTA-PAC® PLUS
Dual winding toroid power inductors/transformers
Pb
HALOGEN
HF
FREE
•Computer and portable power devices
•LCD panels, DVD players
•Inductor: DC-DC converters
•Buck, boost, forward, and resonant converters
•Noise filtering and filter chokes
•Transformers: 1:1 300 Vdc isolation, flyback,
sepic
Environmental data
Part number
•CTX___-__ -R(First three digits CTX; Second
2-3 digits = Inductance Value; Last 1-2 digits,
product size & type)
•-R indicates RoHS compliant
Product size/type
•CTX___-1 (-1 = size; no suffix = OCTA-PAC®)
•CTX___-1P (-1 = size; P suffix = ECONO-
PAC™)
•CTX___-1A (-1 = size; A suffix = OCTA-PAC®
PLUS)
Octa-Pac Plus
(-1A, -2A, -3A)
discontinued October 31,
2017 or until inventory is
depleted.
2
Technical Data DS4314
Effective July 2017
ECONO-PAC™/OCTA-PAC® OCTA-PAC® PLUS
Dual winding toroid power inductors/transformers
www.eaton.com/electronics
PARALLEL SERIES
Open Circuit Full Load Full Load DC Open Circuit Full Load Full Load DC
Part Inductance Inductance Current Resistance Inductance Inductance Current Resistance
Number µH +/-20% µH min. Adc ohms max. µH +/-20% µH min. Adc ohms max.
CTX0.47-1P-R .42 .31 5.50 .005 1.67 1.25 2.75 .021
CTX0.68-1P-R .60 .43 5.10 .006 2.40 1.74 2.55 .025
CTX1-1P-R 1.07 .73 4.50 .008 4.28 2.92 2.25 .032
CTX2-1P-R 2.02 1.36 3.40 .013 8.08 5.44 1.70 .054
CTX5-1P-R 4.83 3.37 2.00 .040 19.31 13.47 1.00 .161
CTX8-1P-R 8.08 5.31 1.80 .052 32.33 21.23 .90 .207
CTX10-1P-R 9.62 6.23 1.70 .057 38.48 24.94 .85 .227
CTX15-1P-R 15.03 9.62 1.40 .087 60.12 38.47 .70 .348
CTX20-1P-R 20.46 14.12 1.00 .158 81.83 56.47 .50 .634
CTX25-1P-R 25.40 17.07 .96 .177 101.60 68.29 .48 .708
CTX33-1P-R 32.33 22.27 .80 .250 129.32 89.06 .40 1.001
CTX50-1P-R 50.52 33.57 .70 .316 202.07 134.27 .35 1.263
CTX68-1P-R 68.40 43.65 .66 .373 273.61 174.61 .33 1.490
CTX100-1P-R 99.01 63.64 .54 .557 396.06 254.55 .27 2.227
CTX150-1P-R 150.72 96.64 .44 .844 602.87 386.56 .22 3.376
CTX200-1P-R 198.41 130.79 .36 1.208 793.65 523.16 .18 4.831
CTX300-1P-R 299.87 190.05 .32 1.525 1199.46 760.19 .16 6.100
CTX0.47-2P-R .54 .42 5.90 .006 2.18 1.69 2.95 .024
CTX0.68-2P-R .85 .64 5.40 .007 3.40 2.55 2.70 .029
CTX1-2P-R 1.22 .89 5.00 .008 4.90 3.57 2.50 .033
CTX2-2P-R 2.18 1.56 3.90 .014 8.70 6.26 1.95 .055
CTX5-2P-R 4.90 3.57 2.50 .032 19.58 14.26 1.25 .128
CTX8-2P-R 7.65 5.31 2.30 .040 30.60 21.23 1.15 .158
CTX10-2P-R 9.83 6.73 2.10 .045 39.30 26.92 1.05 .179
CTX 15-2P-R
14.99 10.51 1.60 .085 59.98 42.02 .80 .339
CTX20-2P-R 19.58 13.37 1.50 .097 78.34 53.48 .75 .387
CTX25-2P-R 24.79 16.60 1.40 .109 99.14 66.38 .70 .436
CTX33-2P-R 32.67 21.29 1.30 .126 130.70 85.17 .65 .503
CTX50-2P-R 49.10 35.31 .82 .305 196.38 141.24 .41 1.221
CTX68-2P-R 68.85 47.93 .76 .362 275.40 191.71 .38 1.445
CTX100-2P-R 99.14 69.56 .62 .541 396.58 278.22 .31 2.162
CTX150-2P-R 148.10 100.07 .56 .665 592.42 400.27 .28 2.660
CTX200-2P-R 201.59 138.49 .46 .951 806.34 553.97 .23 3.804
CTX300-2P-R 300.42 197.52 .42 1.176 1201.70 790.08 .21 4.703
CTX0.47-3P-R .46 .35 6.20 .006 1.85 1.42 3.10 .025
CTX0.68-3P-R .67 .50 5.70 .007 2.66 1.98 2.85 .028
CTX1-3P-R .91 .65 5.40 .008 3.63 2.62 2.70 .032
CTX2-3P-R 1.85 1.24 4.60 .011 7.40 4.97 2.30 .045
CTX5-3P-R 4.74 3.04 3.20 .022 18.94 12.15 1.60 .090
CTX8-3P-R 8.16 4.90 2.80 .030 32.63 19.60 1.40 .119
CTX10-3P-R 9.79 5.71 2.70 .033 39.15 22.85 1.35 .131
CTX15-3P-R 14.50 8.50 2.20 .050 58.02 34.01 1.10 .198
CTX20-3P-R 20.15 13.12 1.50 .111 80.59 52.48 .75 .443
CTX25-3P-R 25.33 16.16 1.40 .125 101.31 64.66 .70 .499
CTX33-3P-R 32.63 20.32 1.30 .146 130.54 81.30 .65 .571
CTX50-3P-R 50.02 33.06 .92 .277 200.10 132.24 .46 1.108
CTX68-3P-R 68.84 44.15 .84 .328 275.35 176.61 .42 1.312
CTX100-3P-R 101.31 65.50 .68 .501 405.22 262.02 .34 2.005
CTX150-3P-R 149.85 90.92 .64 .621 599.40 363.68 .32 2.483
CTX200-3P-R 200.10 116.51 .60 .731 800.38 466.03 .30 2.925
CTX300-3P-R 298.39 172.12 .50 .926 1193.55 688.50 .25 3.702
CTX0.47-4P-R .49 .37 7.90 .005 1.95 1.49 3.95 .019
CTX0.68-4P-R .76 .56 7.20 .006 3.05 2.24 3.60 .023
CTX1-4P-R 1.10 .81 5.90 .008 4.39 3.24 2.95 .033
CTX2-4P-R 1.95 1.42 4.60 .014 7.81 5.69 2.30 .055
CTX5-4P-R 5.15 3.56 3.30 .027 20.62 14.23 1.65 .107
CTX8-4P-R 7.81 5.15 3.00 .033 31.23 20.61 1.50 .131
CTX10-4P-R 9.88 6.70 2.50 .047 39.53 26.79 1.25 .187
CTX15-4P-R 14.76 9.52 2.30 .057 59.05 38.09 1.15 .228
CTX20-4P-R 20.62 13.44 1.90 .084 82.47 53.76 .95 .337
CTX25-4P-R 25.65 17.17 1.60 .115 102.60 68.68 .80 .461
CTX33-4P-R 33.21 22.93 1.30 .166 132.86 91.72 .65 .662
CTX50-4P-R 48.80 32.21 1.20 .201 195.20 128.83 .60 .805
CTX68-4P-R 67.37 43.04 1.10 .238 269.50 172.16 .55 .952
CTX100-4P-R 99.09 69.54 .72 .565 396.38 278.15 .36 2.259
CTX150-4P-R 149.45 101.46 .64 .696 597.80 405.83 .32 2.784
CTX200-4P-R 200.11 131.37 .60 .810 800.44 525.47 .30 3.240
CTX300-4P-R 298.93 188.03 .54 1.003 1195.72 752.13 .27 4.011
Technical Data DS4314
Effective July 2017
ECONO-PAC™/OCTA-PAC® OCTA-PAC® PLUS
Dual winding toroid power inductors/transformers
PARALLEL SERIES
Open Circuit Full Load Full Load DC Open Circuit Full Load Full Load DC
Part Inductance Inductance Current Resistance Inductance Inductance Current Resistance
Number µH +/-20% µH min. Adc ohms max. µH +/-20% µH min. Adc ohms max.
CTX0.47-1-R .40 .26 5.50 .005 1.60 1.05 2.75 .020
CTX0.68-1-R .63 .41 4.50 .006 2.50 1.63 2.25 .024
CTX1-1-R .90 .56 4.20 .007 3.60 2.24 2.10 .028
CTX2-1-R 2.03 1.00 4.10 .010 8.10 4.01 2.05 .040
CTX5-1-R 4.90 2.66 2.30 .030 19.60 10.64 1.15 .122
CTX8-1-R 8.10 4.08 2.00 .039 32.40 16.34 1.00 .157
CTX10-1-R 10.00 4.85 1.90 .044 40.00 19.40 .95 .176
CTX15-1-R 14.40 8.74 1.10 .080 57.60 34.96 .55 .319
CTX20-1-R 19.60 11.54 1.00 .146 78.40 46.15 .50 .583
CTX25-1-R 25.60 16.35 .74 .167 102.40 65.42 .37 .668
CTX33-1-R 32.40 19.84 .72 .293 129.60 79.37 .36 1.171
CTX50-1-R 50.63 29.34 .64 .365 202.50 117.38 .32 1.461
CTX68-1-R 67.60 39.73 .54 .516 270.40 158.92 .27 2.064
CTX100-1-R 99.23 58.72 .44 .784 396.90 234.88 .22 3.137
CTX150-1-R 148.23 85.16 .38 .965 592.90 340.64 .19 3.861
CTX200-1-R 202.50 107.60 .37 1.142 810.00 430.39 .19 4.567
CTX300-1-R 302.50 191.38 .22 1.431 1210.00 765.54 .11 5.724
CTX0.47-2-R .42 .29 6.50 .005 1.69 1.17 3.25 .019
CTX0.68-2-R .75 .50 5.50 .006 3.01 1.98 2.75 .024
CTX1-2-R 1.18 .76 4.60 .007 4.70 3.04 2.30 .028
CTX2-2-R 2.30 1.27 4.50 .010 9.21 5.07 2.25 .038
CTX5-2-R 4.70 2.66 3.00 .021 18.80 10.65 1.50 .084
CTX8-2-R 7.94 4.18 2.60 .027 31.77 16.72 1.30 .108
CTX10-2-R 10.58 5.18 2.50 .031 42.30 20.72 1.25 .125
CTX15-2-R 15.23 8.53 1.70 .059 60.91 34.10 .85 .236
CTX20-2-R 20.73 12.36 1.30 .107 82.91 49.46 .65 .426
CTX25-2-R 24.86 16.09 1.00 .117 99.45 64.35 .50 .466
CTX33-2-R 31.77 15.90 1.40 .105 127.09 63.59 .70 .420
CTX50-2-R 51.18 28.79 .92 .210 204.73 115.16 .46 .839
CTX68-2-R 67.87 38.71 .78 .303 271.47 154.83 .39 1.214
CTX100-2-R 99.45 57.45 .63 .457 397.81 229.79 .32 1.828
CTX150-2-R 147.39 93.46 .43 .560 589.57 373.84 .22 2.241
CTX200-2-R 198.58 122.94 .39 .796 794.30 491.76 .20 3.184
CTX300-2-R 300.80 169.06 .38 1.231 1203.20 676.24 .19 4.929
CTX0.47-3-R .38 .27 6.00 .005 1.54 1.08 3.00 .020
CTX0.68-3-R .60 .42 5.00 .006 2.40 1.67 2.50 .024
CTX1-3-R .86 .57 4.80 .007 3.46 2.28 2.40 .028
C TX2-3-R 1.94 1.05 4.70 .010 7.78 4.22 2.35 .040
CTX5-3-R 4.70 2.56 3.00 .019 18.82 10.26 1.50 .077
CTX8-3-R 7.78 3.74 2.80 .025 31.10 14.98 1.40 .099
CTX10-3-R 9.60 4.38 2.70 .028 38.40 17.54 1.35 .111
CTX15-3-R 15.00 7.26 2.00 .043 60.00 29.06 1.00 .172
CTX20-3-R 20.18 10.76 1.50 .078 80.74 43.04 .75 .312
CTX25-3-R 24.58 15.64 .98 .086 98.30 62.56 .49 .346
CTX33-3-R 32.86 19.69 .96 .083 131.42 78.77 .48 .331
CTX50-3-R 50.78 27.18 .94 .239 203.14 108.71 .47 .956
CTX68-3-R 67.42 36.53 .80 .277 269.66 146.11 .40 1.109
CTX100-3-R 101.40 52.48 .70 .345 405.60 209.93 .35 1.381
CTX150-3-R 149.78 97.16 .38 .430 599.14 388.63 .19 1.718
CTX200-3-R 198.74 119.18 .39 .619 794.98 476.71 .20 2.475
CTX300-3-R 301.06 157.44 .40 .951 1204.22 629.75 .20 3.083
CTX0.47-4-R .44 .32 7.00 .004 1.76 1.29 3.50 .016
CTX0.68-4-R .78 .55 6.00 .005 3.14 2.21 3.00 .020
CTX1-4-R 1.23 .85 5.00 .006 4.90 3.41 2.50 .024
CTX2-4-R 1.76 1.06 4.90 .007 7.06 4.24 2.45 .028
CTX5-4-R 4.90 2.59 4.40 .014 19.60 10.37 2.20 .056
CTX8-4-R 8.28 4.29 3.50 .018 33.12 17.14 1.75 .072
CTX10-4-R 9.60 4.82 3.40 .019 38.42 19.28 1.70 .078
CTX15-4-R 14.16 6.76 3.00 .024 56.64 27.03 1.50 .096
CTX20-4-R 19.60 10.68 2.10 .055 78.40 42.73 1.05 .220
CTX25-4-R 25.92 13.32 2.00 .063 103.68 53.27 1.00 .253
CTX33-4-R 33.12 16.82 1.80 .072 132.50 67.27 .90 .287
CTX50-4-R 50.18 25.03 1.50 .111 200.70 100.11 .75 .443
CTX68-4-R 67.08 35.29 1.20 .157 268.32 141.15 .60 .630
CTX100-4-R 99.23 54.56 .92 .302 396.90 218.25 .46 1.210
CTX150-4-R 148.23 77.17 .82 .372 592.90 308.69 .41 1.488
CTX200-4-R 200.70 111.08 .64 .545 802.82 444.32 .32 2.180
CTX300-4-R 298.12 147.92 .62 .672 1192.46 591.66 .31 2.687
3
www.eaton.com/electronics
Technical Data DS4314
Effective July 2017
ECONO-PAC™/OCTA-PAC® OCTA-PAC® PLUS
Dual winding toroid power inductors/transformers
4www.eaton.com/electronics
P
Pa
ar
ra
al
ll
le
el
l R
Ra
at
ti
in
ng
gs
sS
Se
er
ri
ie
es
s R
Ra
at
ti
in
ng
gs
s
P
Pa
ar
rt
t N
Nu
um
mb
be
er
rR
Ra
at
te
ed
dO
OC
CL
L (
(1
1)
)I
I s
sa
at
t.
. (
(2
2)
) I
I r
rm
ms
s.
. (
(3
3)
)D
DC
CR
R Ω
Ω(
(4
4)
)V
Vo
ol
lt
t (
(7
7)
)O
OC
CL
L (
(1
1)
)I
I s
sa
at
t.
. (
(2
2)
)I
I r
rm
ms
s.
. (
(3
3)
)D
DC
CR
R Ω
Ω(
(4
4)
)V
Vo
ol
lt
t (
(7
7)
)
I
In
nd
du
uc
ct
ta
an
nc
ce
en
no
om
mi
in
na
al
l A
Am
mp
pe
er
re
es
sA
Am
mp
pe
er
re
es
sm
ma
ax
x.
.µ
µ-
-S
Se
ec
cn
no
om
mi
in
na
al
lA
Am
mp
pe
er
re
es
s A
Am
mp
pe
er
re
es
sm
ma
ax
x.
.µ
µ-
-S
Se
ec
c
(
(µ
µH
H)
)+
+/
/-
-2
25
5%
%P
Pe
ea
ak
k@
@ 2
20
0°
°C
C
.
.+
+/
/-
-2
25
5%
%P
Pe
ea
ak
k@
@ 2
20
0°
°C
C
.
.
(
(µ
µH
H)
)(
(µ
µH
H)
)
C
CT
TX
X0
0.
.3
33
3-
-1
1A
A-
-R
R0.33 0.402 12.5 10.0 0.0037 .93 1.61 6.25 4.98 0.015 1.86
C
CT
TX
X0
0.
.6
68
8-
-1
1A
A-
-R
R0.68 0.752 9.4 9.0 0.0046 1.24 3.01 4.69 4.48 0.0185 2.49
C
CT
TX
X1
1-
-1
1A
A-
-R
R1.0 1.18 7.5 7.26 0.0070 1.55 4.70 3.75 3.63 0.0282 3.11
C
CT
TX
X2
2-
-1
1A
A-
-R
R2.0 2.30 5.36 5.64 0.012 2.17 9.21 2.68 2.82 0.0470 4.35
C
CT
TX
X5
5-
-1
1A
A-
-R
R5.0 4.70 3.75 4.27 0.020 3.11 18.8 1.88 2.13 0.082 6.21
C
CT
TX
X8
8-
-1
1A
A-
-R
R8.0 7.94 2.88 3.37 0.033 4.04 31.77 1.44 1.69 0.130 8.08
C
CT
TX
X1
10
0-
-1
1A
A-
-R
R10.0 10.58 2.5 2.84 0.046 4.66 42.30 1.25 1.42 0.183 9.32
C
CT
TX
X1
15
5-
-1
1A
A-
-R
R15.0 15.23 2.08 2.07 0.087 5.59 60.91 1.04 1.03 0.348 11.2
C
CT
TX
X2
20
0-
-1
1A
A-
-R
R20.0 20.73 1.79 1.71 0.127 6.52 82.91 0.89 0.86 0.507 13.0
C
CT
TX
X2
25
5-
-1
1A
A-
-R
R25.0 24.86 1.63 1.46 0.173 7.14 99.45 0.82 0.73 0.693 14.3
C
CT
TX
X3
33
3-
-1
1A
A-
-R
R33.0 34.26 1.39 1.22 0.249 8.39 137.1 0.69 0.61 0.995 16.8
C
CT
TX
X5
50
0-
-1
1A
A-
-R
R50.0 51.18 1.14 0.99 0.381 10.3 204.7 0.57 0.49 1.524 20.5
C
CT
TX
X6
68
8-
-1
1A
A-
-R
R68.0 67.87 0.99 0.92 0.437 11.8 271.5 0.49 0.46 1.749 23.6
C
CT
TX
X1
10
00
0-
-1
1A
A-
-R
R100.0 99.45 0.82 0.74 0.686 14.3 397.8 0.41 0.37 2.745 28.6
C
CT
TX
X1
15
50
0-
-1
1A
A-
-R
R150.0 147.4 0.67 0.67 0.832 17.4 589.6 0.33 0.33 3.329 34.8
C
CT
TX
X2
20
00
0-
-1
1A
A-
-R
R200.0 198.6 0.58 0.62 0.963 20.2 794.3 0.29 0.31 3.854 40.4
C
CT
TX
X3
30
00
0-
-1
1A
A-
-R
R300.0 300.8 0.47 0.56 1.181 24.9 1203 0.23 0.28 4.726 49.7
C
CT
TX
X0
0.
.3
33
3-
-2
2A
A-
-R
R0.33 0.284 18.8 10.9 0.0033 .85 1.14 9.38 5.47 0.0132 1.71
C
CT
TX
X0
0.
.6
68
8-
-2
2A
A-
-R
R0.68 0.675 12.5 9.4 0.0045 1.28 2.70 6.25 4.68 0.0180 2.56
C
CT
TX
X1
1-
-2
2A
A-
-R
R1.0 1.26 9.38 8.22 0.0058 1.71 5.06 4.69 4.11 0.0233 3.42
C
CT
TX
X2
2-
-2
2A
A-
-R
R2.0 1.98 7.50 6.74 0.0090 2.14 7.90 3.75 3.37 0.035 4.27
C
CT
TX
X5
5-
-2
2A
A-
-R
R5.0 5.06 4.69 4.34 0.021 3.42 20.22 2.34 2.17 0.084 6.84
C
CT
TX
X8
8-
-2
2A
A-
-R
R8.0 7.90 3.75 3.50 0.032 4.27 31.60 1.88 1.75 0.129 8.55
C
CT
TX
X1
10
0-
-2
2A
A-
-R
R10.0 11.38 3.13 2.89 0.047 5.13 45.50 1.56 1.45 0.188 10.3
C
CT
TX
X1
15
5-
-2
2A
A-
-R
R15.0 15.48 2.68 2.69 0.054 5.98 61.94 1.34 1.35 0.218 12.0
C
CT
TX
X2
20
0-
-2
2A
A-
-R
R20.0 20.22 2.34 2.24 0.078 6.84 80.90 1.17 1.12 0.313 13.7
C
CT
TX
X2
25
5-
-2
2A
A-
-R
R25.0 25.60 2.08 1.89 0.111 7.69 102.38 1.04 0.94 0.443 15.4
C
CT
TX
X3
33
3-
-2
2A
A-
-R
R33.0 34.84 1.79 1.56 0.162 8.97 139.4 0.89 0.78 0.649 17.9
C
CT
TX
X5
50
0-
-2
2A
A-
-R
R50.0 49.38 1.50 1.28 0.240 10.7 197.5 0.75 0.64 0.961 21.4
C
CT
TX
X6
68
8-
-2
2A
A-
-R
R68.0 66.44 1.29 1.07 0.342 12.4 265.8 0.65 0.54 1.367 24.8
C
CT
TX
X1
10
00
0-
-2
2A
A-
-R
R100.0 102.38 1.04 0.75 0.695 15.4 409.5 0.52 0.38 2.778 30.8
C
CT
TX
X1
15
50
0-
-2
2A
A-
-R
R150.0 152.9 0.85 0.68 0.842 18.8 611.8 0.43 0.34 3.366 37.6
C
CT
TX
X2
20
00
0-
-2
2A
A-
-R
R200.0 197.5 0.75 0.64 0.950 21.4 790.0 0.38 0.32 3.800 42.7
C
CT
TX
X3
30
00
0-
-2
2A
A-
-R
R300.0 303.7 0.60 0.58 1.174 26.5 1215 0.30 0.29 4.697 53.0
C
CT
TX
X0
0.
.3
33
3-
-3
3A
A-
-R
R0.33 0.368 15.0 11.4 0.0032 0.97 1.47 7.50 5.72 0.0128 1.93
C
CT
TX
X0
0.
.6
68
8-
-3
3A
A-
-R
R0.68 0.688 11.3 9.3 0.0048 1.29 2.75 5.63 4.64 0.0194 2.58
C
CT
TX
X1
1-
-3
3A
A-
-R
R1.0 1.08 9.0 8.38 0.0059 1.61 4.20 4.50 4.19 0.0238 3.22
C
CT
TX
X2
2-
-3
3A
A-
-R
R2.0 2.11 6.43 7.26 0.0079 2.26 8.43 3.21 3.63 0.0317 4.51
C
CT
TX
X5
5-
-3
3A
A-
-R
R5.0 5.20 4.09 5.24 0.015 3.54 20.81 2.05 2.62 0.061 7.09
C
CT
TX
X8
8-
-3
3A
A-
-R
R8.0 8.43 3.21 4.23 0.023 4.51 33.77 1.61 2.12 0.093 9.02
C
CT
TX
X1
10
0-
-3
3A
A-
-R
R10.0 9.68 3.00 3.64 0.032 4.83 38.70 1.50 1.82 0.126 9.67
C
CT
TX
X1
15
5-
-3
3A
A-
-R
R15.0 15.52 2.37 3.25 0.039 6.12 62.09 1.18 1.63 0.158 12.2
C
CT
TX
X2
20
0-
-3
3A
A-
-R
R20.0 20.81 2.05 2.43 0.071 7.09 83.25 1.02 1.22 0.282 14.2
C
CT
TX
X2
25
5-
-3
3A
A-
-R
R25.0 24.77 1.88 2.34 0.076 7.73 99.07 0.94 1.17 0.306 15.5
C
CT
TX
X3
33
3-
-3
3A
A-
-R
R33.0 33.71 1.61 1.93 0.112 9.02 134.8 0.80 0.96 0.449 18.0
C
CT
TX
X5
50
0-
-3
3A
A-
-R
R50.0 49.71 1.32 1.56 0.171 11.0 198.8 0.66 0.78 0.686 21.9
1) Open Circuit Inductance Test Parameters: 100kHz, 0.250 Vrms, 0.0 Adc
Parallel: (1,4 - 3,2) Series: (1 - 3) tie (2 - 4)
2) Peak current for approximately 30% roll-off
3) RMS current, delta temp. of 40° C ambient temperature of 85° C
4) DCR @ 20°C
5) Hipot rating: winding to winding: 300Vdc min.
6) Turns Ratio: (1-2):(4-3) 1:1
7) Applied volt-time product (v-us) across the inductor. This value represents the
applied V-us at 300KHz necessary to generate a core loss equal to 10% of the
total losses for a 40°C temperature rise.
Octa-Pac Plus (-1A, -2A-3A)
discontinued October 31, 2017 or
until inventory is depleted.
Technical Data DS4314
Effective July 2017
ECONO-PAC™/OCTA-PAC® OCTA-PAC® PLUS
Dual winding toroid power inductors/transformers
5
www.eaton.com/electronics
P
Pa
ar
ra
al
ll
le
el
l R
Ra
at
ti
in
ng
gs
sS
Se
er
ri
ie
es
s R
Ra
at
ti
in
ng
gs
s
P
Pa
ar
rt
t N
Nu
um
mb
be
er
rR
Ra
at
te
ed
dO
OC
CL
L (
(1
1)
)I
I s
sa
at
t.
. (
(2
2)
) I
I r
rm
ms
s.
. (
(3
3)
)D
DC
CR
R Ω
Ω(
(4
4)
)V
Vo
ol
lt
t (
(7
7)
)O
OC
CL
L (
(1
1)
)I
I s
sa
at
t.
. (
(2
2)
)I
I r
rm
ms
s.
. (
(3
3)
)D
DC
CR
R Ω
Ω(
(4
4)
)V
Vo
ol
lt
t (
(7
7)
)
I
In
nd
du
uc
ct
ta
an
nc
ce
en
no
om
mi
in
na
al
l A
Am
mp
pe
er
re
es
sA
Am
mp
pe
er
re
es
sm
ma
ax
x.
.µ
µ-
-S
Se
ec
cn
no
om
mi
in
na
al
lA
Am
mp
pe
er
re
es
s A
Am
mp
pe
er
re
es
sm
ma
ax
x.
.µ
µ-
-S
Se
ec
c
(
(µ
µH
H)
)+
+/
/-
-2
25
5%
%P
Pe
ea
ak
k@
@ 2
20
0°
°C
C
.
.+
+/
/-
-2
25
5%
%P
Pe
ea
ak
k@
@ 2
20
0°
°C
C
.
.
(
(µ
µH
H)
)(
(µ
µH
H)
)
C
CT
TX
X6
68
8-
-3
3A
A-
-R
R68.0 68.80 1.13 1.28 0.253 12.9 275.2 0.56 0.64 1.013 25.8
C
CT
TX
X1
10
00
0-
-3
3A
A-
-R
R100.0 99.07 0.94 1.05 0.379 15.5 396.3 0.47 0.53 1.514 30.9
C
CT
TX
X1
15
50
0-
-3
3A
A-
-R
R150.0 149.7 0.76 0.86 0.571 19.0 598.7 0.38 0.43 2.283 38.0
C
CT
TX
X2
20
00
0-
-3
3A
A-
-R
R200.0 198.8 0.66 0.71 0.829 21.9 795.3 0.33 0.35 3.315 43.8
C
CT
TX
X3
30
00
0-
-3
3A
A-
-R
R300.0 296.2 0.54 0.56 1.309 26.7 1185 0.27 0.28 5.236 53.5
C
CT
TX
X0
0.
.3
33
3-
-4
4A
A-
-R
R0.33 0.313 22.5 12.2 0.0030 0.98 1.25 11.25 6.09 0.0119 1.96
C
CT
TX
X0
0.
.6
68
8-
-4
4A
A-
-R
R0.68 0.744 15.0 10.6 0.0040 1.47 2.98 7.50 5.28 0.0158 2.94
C
CT
TX
X1
1-
-4
4A
A-
-R
R1.0 1.39 11.25 9.23 0.0052 1.96 5.57 5.63 4.62 0.0207 3.93
C
CT
TX
X2
2-
-4
4A
A-
-R
R2.0 2.18 9.00 8.38 0.0063 2.45 8.70 4.50 4.19 0.0251 4.91
C
CT
TX
X5
5-
-4
4A
A-
-R
R5.0 4.26 6.43 7.21 0.0085 3.44 17.05 3.21 3.61 0.0339 6.87
C
CT
TX
X8
8-
-4
4A
A-
-R
R8.0 8.70 4.50 5.49 0.015 4.91 34.80 2.25 2.74 0.059 9.81
C
CT
TX
X1
10
0-
-4
4A
A-
-R
R10.0 10.53 4.09 4.67 0.020 5.40 42.11 2.05 2.33 0.081 10.8
C
CT
TX
X1
15
5-
-4
4A
A-
-R
R15.0 14.70 3.46 3.87 0.029 6.38 58.81 1.73 1.94 0.117 12.8
C
CT
TX
X2
20
0-
-4
4A
A-
-R
R20.0 19.58 3.00 3.62 0.034 7.36 78.30 1.50 1.81 0.135 14.7
C
CT
TX
X2
25
5-
-4
4A
A-
-R
R25.0 25.14 2.65 3.02 0.048 8.34 100.51 1.32 1.51 0.193 16.7
C
CT
TX
X3
33
3-
-4
4A
A-
-R
R33.0 34.80 2.25 2.49 0.071 9.81 139.2 1.13 1.25 0.283 19.6
C
CT
TX
X5
50
0-
-4
4A
A-
-R
R50.0 50.11 1.88 2.05 0.104 11.8 200.4 0.94 1.03 0.418 23.6
C
CT
TX
X6
68
8-
-4
4A
A-
-R
R68.0 68.21 1.61 1.70 0.153 13.7 272.8 0.80 0.85 0.612 27.5
C
CT
TX
X1
10
00
0-
-4
4A
A-
-R
R100.0 100.57 1.32 1.37 0.235 16.7 402.3 0.66 0.69 0.939 33.4
C
CT
TX
X1
15
50
0-
-4
4A
A-
-R
R150.0 153.5 1.07 1.10 0.365 20.6 613.9 0.54 0.55 1.462 41.2
C
CT
TX
X2
20
00
0-
-4
4A
A-
-R
R200.0 200.4 0.94 0.92 0.521 23.6 801.8 0.47 0.46 2.085 47.1
C
CT
TX
X3
30
00
0-
-4
4A
A-
-R
R300.0 302.8 0.76 0.75 0.787 29.0 1211 0.38 0.37 3.148 57.9
1) Open Circuit Inductance Test Parameters: 100kHz, 0.250 Vrms, 0.0 Adc
Parallel: (1,4 - 3,2) Series: (1 - 3) tie (2 - 4)
2) Peak current for approximately 30% roll-off
3) RMS current, delta temp.of 40°C ambient temperature of 85° C
4) DCR @ 20°C
5) Hipot rating: winding to winding: 300Vdc min.
6) Turns Ratio: (1-2):(4-3) 1:1
7) Applied volt-time product (v-us) across the inductor.This value represents the
applied V-us at 300KHz necessary to generate a core loss equal to 10% of the
total losses for a 40°C temperature rise.
Octa-Pac Plus
(-1A, -2A-3A) discontinued
October 31, 2017 or until
inventory is depleted.
Technical Data DS4314
Effective July 2017
ECONO-PAC™/OCTA-PAC® OCTA-PAC® PLUS
Dual winding toroid power inductors/transformers
6www.eaton.com/electronics
Mechanical Diagrams
CTX 1, 1P, 1A Series
CTX 2, 2P, 2A Series
CTX 3, 3P, 3A Series
CTX 4, 4P, 4A Series
Dimensions in Millimeters.wwllyy = (date code) R = revision level
Technical Data DS4314
Effective July 2017
ECONO-PAC™/OCTA-PAC® OCTA-PAC® PLUS
Dual winding toroid power inductors/transformers
7
www.eaton.com/electronics
CTX 2, 2P, 2A Series
CTX 3, 3P, 3A Series
CTX 4, 4P, 4A Series
Packaging Information
CTX 1, 1P, 1A Series
Dimensions are in millimeters.
Direction of Feed ➞
Direction of Feed ➞
Direction of Feed ➞
Direction of Feed ➞
Parts packaged on 13" Diameter reel,
1,100 parts per reel.
Parts packaged on 13" Diameter reel,
800 parts per reel.
Parts packaged on 13" Diameter reel,
800 parts per reel.
Parts packaged on 13" Diameter reel,
600 parts per reel.
Technical Data DS4314
Effective July 2017
ECONO-PAC™/OCTA-PAC® OCTA-PAC® PLUS
Dual winding toroid power inductors/transformers
8www.eaton.com/electronics
• INDUCTANCE VS. CURRENT:
Inductance will fall off as DC Current is increased.
(See Inductance vs. Current graph).
•FREQUENCY RESPONSE:
de-Wi band frequency response to 1 megaHertz.
•CURRENT LIMITATION:
m fined by thThe aximum allowable currents are de e internal
-s“hot pot” temperatures which are limited to 130°C, including
ieamb nt.
-35 -15 +5 +25 +45 +65 +85 +105 +125
INDUCTANCE VS. TEMPERATURE
Percentage Change
in Inductance
Temperature in Degrees C.
+8
+6
+2
0+
2-
4-
-6
-8
-10
-12
-14
+4 ECONO-PAC
OCTA-PAC
INDUCTANCE VS. CURRENT
Percentage of
Inductance
Per Unit Full Load Current
100
09
80
70
06
05
04
30
20
10
0
0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50
ECONO-PAC
OCTA-PAC
TEMPERATURE RISE VS. RATED CURRENT
Max. Ambient plus Rise = 125°C
Degrees C
Per Unit Full Load Current
140
120
100
80
60
40
20
0
0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50
ECONO-PAC & OCTA-PAC
Performance Characteristics
OCTA-PAC®PLUS Typical Inductance vs. DC Current OCTA-PAC®PLUS Winding Loss Derating with Core Loss
0 20 40 60 80 100 120 140 160 180 200
0
10
20
30
40
50
60
70
80
90
100
% of Isat
% of OCL
400 500 600 800 1000
30020010080605040302010
% of A gpplied Volt-µ-Second Ratin
99
98
97
96
95
94
92
90
80
50
60
70
40
20
0
% of Losses from Irms (maximum)
1MHz
500KHz
300KHz
200KHz
100KHz
Eaton
Electronics Division
1000 Eaton Boulevard
Cleveland, OH 44122
United States
www.eaton.com/electronics
© 2017 Eaton
All Rights Reserved
Printed in USA
Publication No. DS4314
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.
Solder Reflow Profile
Temperature
t
tP
ts
TC -5°C
Time 25°C to Peak Time
25°C
Tsmin
Tsmax
TL
TP
Preheat
A
Max. Ramp Up Rate = 3°C/s
Max. Ramp Down Rate = 6°C/s
T
Ta
ab
bl
le
e
1
1
-
-
S
St
ta
an
nd
da
ar
rd
d
S
Sn
nP
Pb
b
S
So
ol
ld
de
er
r
(
(T
Tc
c)
)
VolumeVolume
Package mm3mm3
Thickness <350 _
>350
<2.5mm 235°C220°C
_
>2.5mm 220°C220°C
T
Ta
ab
bl
le
e
2
2
-
-
L
Le
ea
ad
d
(
(P
Pb
b)
)
F
Fr
re
ee
e
S
So
ol
ld
de
er
r
(
(T
Tc
c)
)
Volume Volume Volume
Package mm3mm3mm3
Thickness <350 350 - 2000 >2000
<1.6mm 260°C260°C260°C
1.6 – 2.5mm 260°C250°C245°C
>2.5mm 250°C245°C245°C
Reference JDEC J-STD-020
Standard SnPb Solder Lead (Pb) Free SolderProfile Feature
Preheat and Soak•eTmperature min. (Tsmin) 100°C150°C
• Temperature max. (Tsmax) 150°C200°C
• Time (Tsmin to Tsmax) (ts)60-120 Seconds60-120 Seconds
3°C/ Second Max. 3°C/ Second Max.
183°C217°C
60-150 Seconds60-150 Seconds
Table 1 able 2T
20 Seconds** 30 Seconds**
6°C/ Second Max. 6°C/ Second Max.
Average ramp up rate Tsmaxto Tp
Liquidous temperature (T
L
)
Time at liquidous (tL)
Peak package body temperature (TP)*
Time (tp)** within 5 °C of the specified classification temperature (Tc)
Average ramp-down rate (Tpto Tsmax)
Time 25°C to Peak Temperature Minutes Max.68 Minutes Max.
*Tolerance for peak profile temperature (Tp) is defined as a supplier minimum and a user maximum.
** Tolerance for time at peak profile temperature (tp) is defined as a supplier minimum and a user maximum.
Technical Data DS4314
Effective July 2017
ECONO-PAC™/OCTA-PAC® OCTA-PAC® PLUS
Dual winding toroid power inductors/transformers
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Cooper Bussmann:
CTX02-15835 CTX02-13665 CTX06-14620 CTX06-14621 CTX06-14622 CTX82-2-R CTX02-12161 CTX02-12186
CTX02-12403 CTX02-13063 CTX02-13140 CTX02-13141 CTX02-13274 CTX02-13400 CTX02-13483 CTX02-
13498 CTX02-13664 CTX02-13666 CTX02-13713 CTX02-13716 CTX02-13836 CTX02-13867 CTX02-13868
CTX02-14121 CTX02-14143 CTX02-14239 CTX02-14608 CTX02-14921 CTX02-14989 CTX02-16030 CTX02-
16031 CTX02-17251-R CTX03-12357-2 CTX03-12744 CTX03-12757 CTX03-14439 CTX03-14856 CTX03-15220
CTX03-15256 CTX03-17905-R CTX06-14599 CTX08-14225 CTX08-14729 CTX13-14602 CTX14-14749 CTX14-
15151 CTX16-15218 CTX16-16364 CTX16-16365 CTX16-16366 CTX16-17360 CTX16-17413-R CTX16-18294-R
CTX17-17640-R CTX210518-R CTX33-17526-R CTX33-17678-R CTX33-17688-R CTX33-17807-R CTX33-18395-
R CTX33-18428-R CTX33-4A-L CTX100-5-R CTX47-5-R CTX68-5P-R CTX91-2-KM-R CTX16-18610-R CTX03-
18761-R CTX03-18839-R CTX03-12062 CTX16-18484-R CTX16-18702-R CTX16-18625-R CTX17-18765-R
Eaton:
CTX250-4-R CTX0.33-1A-R CTX0.33-2A-R CTX0.33-3A-R CTX0.33-4A-R CTX0.47-1-R CTX0.47-1P-R CTX0.47-
2-R CTX0.47-2P-R CTX0.47-3-R CTX0.47-3P-R CTX0.47-4-R CTX0.47-4P-R CTX0.68-1-R CTX0.68-1A-R
CTX0.68-1P-R CTX0.68-2-R CTX0.68-2A-R CTX0.68-2P-R CTX0.68-3-R CTX0.68-3A-R CTX0.68-3P-R CTX0.68-
4-R CTX0.68-4A-R CTX0.68-4P-R CTX1-1-R CTX1-1A-R CTX1-1P-R CTX1-2-R CTX1-2A-R CTX1-2P-R CTX1-
3-R CTX1-3A-R CTX1-3P-R CTX1-4-R CTX1-4A-R CTX1-4P-R CTX10-1-R CTX10-1A-R CTX10-1P-R CTX10-
16-52LP-R CTX10-2-R CTX10-2-52M-R CTX10-2A-R CTX10-2P-R CTX10-3-R CTX10-3A-R CTX10-3P-R CTX10-
4-R CTX10-4A-R CTX10-4P-R CTX10-5-52-R CTX10-7-52LP-R CTX100-1-R CTX100-1A-R CTX100-1P-R
CTX100-2-R CTX100-2A-R CTX100-2P-R CTX100-3-R CTX100-3A-R CTX100-3P-R CTX100-4-R CTX100-4A-R
CTX100-4P-R CTX100-5-52LP-R CTX100-5-52M-R CTX15-1-R CTX15-1A-R CTX15-1P-R CTX15-2-R CTX15-2A-
R CTX15-2P-R CTX15-3-R CTX15-3A-R CTX15-3P-R CTX15-4-R CTX15-4A-R CTX15-4P-R CTX150-1-R
CTX150-1A-R CTX150-1P-R CTX150-2-R CTX150-2A-R CTX150-2P-R CTX150-3-R CTX150-3A-R CTX150-3P-R
CTX150-4-R CTX150-4A-R CTX150-4P-R CTX2-1-R CTX2-1A-R CTX2-1P-R CTX2-2-R CTX2-2A-R CTX2-2P-R
CTX2-3-R CTX2-3A-R CTX2-3P-R
