Effective June 2017
Technical Data DS4314 Supersedes March 2007
ECONO-PAC/OCTA-PAC OCTA-PAC PLUS
Dual winding toroid power inductors/transformers
Applications
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
Part number
CTX___-__ -R(First three digits CTX; Second
2-3 digits = Inductance Value; Last 1-2 digits,
Product features
product size & type)
-R indicates RoHS compliant
Surface mount magnetics that can be used as
single or coupled inductors or 1:1 transformers
Product size/type
that provide isolation between two windings
OCTA-PACs are designed around high
CTX___-1 (-1 = size; no suffix = OCTA-PAC)
frequency, low loss core material
CTX___-1P (-1 = size; P suffix = ECONO-
ECONO-PACs are a lower cost version of OCTA-
PAC)
PACs offering high saturation flux density, Iron
CTX___-1A (-1 = size; A suffix = OCTA-PAC
powder core material
PLUS)
OCTA-PAC PLUSs offer higher current ratings
and higher saturation flux densities than OCTA-
Environmental data
PAC and ECONO-PAC, Amorphous metal core
material Storage temperature range (component):
Secure 4 Terminal Mounting -40 C to +125 C
Inductor more versatile inductance combination
Operating temperature range: -40 C to +125 C
by series or parallel connections (ambient plus self-temperature rise)
Solder reflow temperature:
J-STD-020 (latest revision) compliant
HALOGEN
Pb
HF
FREEECONO-PAC/OCTA-PAC OCTA-PAC PLUS
Technical Data DS4314
Effective June 2017
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 H +/-20% H min. Adc ohms max. H +/-20% H 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
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