2
Technical Data 4339
Effective August 2017
www.eaton.com/electronics
SDQ
Low-profile dual winding shielded drum inductor/transformer
Product specifications
PPaarraalllleell RRaattiinnggssSSeerriieess RRaattiinnggss
RRaatteeddPPaarrttOOCCLL ((11))IIrrmmss((22))IIssaatt((33))DDCCRR ((44))VVoollttss ((55))OOCCLL ((11))IIrrmmss((22))IIssaatt((33))DDCCRR ΩΩ((44))VVoollttss ((55))
PPaarrttIInndduuccttaanncceeMMaarrkkiinngg±±2200%% ((ΩΩ)) ttyypp..±±2200%%ttyypp..
NNuummbbeerr((µµHH))((µµHH))ttyypp..((µµHH))ttyypp..
SDQ12-R47-R 0.47 A 0.49±30% 2.78 4.34 0.0325 2.45 1.96±30% 1.39 2.17 0.1298 4.90
SDQ12-1R0-R 1 B 0.81 2.49 3.38 0.0403 3.15 3.24 1.25 1.69 0.1611 6.30
SDQ12-1R5-R 1.5 C 1.69 1.69 2.34 0.0870 4.55 6.76 0.847 1.17 0.3481 9.10
SDQ12-2R2-R 2.2 D 2.25 1.60 2.03 0.0977 5.25 9.00 0.800 1.01 0.3908 10.5
SDQ12-3R3-R 3.3 E 3.61 1.28 1.60 0.1527 6.65 14.44 0.640 0.800 0.6106 13.3
SDQ12-4R7-R 4.7 F 4.41 1.12 1.45 0.1990 7.35 17.64 0.560 0.724 0.7959 14.7
SDQ12-6R2-R 6.2 G 6.25 1.02 1.22 0.2387 8.75 25.00 0.512 0.608 0.9548 17.5
SDQ12-8R2-R 8.2 H 8.41 0.868 1.05 0.3318 10.15 33.64 0.434 0.524 1.33 20.3
SDQ12-100-R 10 J 9.61 0.831 0.981 0.3620 10.85 38.44 0.416 0.490 1.45 21.7
SDQ12-150-R 15 K 15.21 0.658 0.779 0.5766 13.65 60.84 0.329 0.390 2.31 27.3
SDQ12-220-R 22 L 22.09 0.548 0.647 0.8332 16.45 88.36 0.274 0.323 3.33 32.9
SDQ12-330-R 33 M 32.49 0.439 0.533 1.29 19.95 130.0 0.220 0.267 5.18 39.9
SDQ12-470-R 47 N 47.61 0.401 0.441 1.55 24.15 190.4 0.201 0.220 6.21 48.3
SDQ12-680-R 68 O 68.89 0.326 0.366 2.36 29.05 275.6 0.163 0.183 9.43 58.1
SDQ12-820-R 82 P 82.81 0.309 0.334 2.62 31.85 331.2 0.154 0.167 10.49 63.7
SDQ25-R47-R 0.47 A 0.392±30% 3.71 6.43 0.0181 2.31 1.57±30% 1.86 3.21 0.0725 4.62
SDQ25-R82-R 0.82 B 0.648±30% 3.37 5.00 0.0221 2.97 2.59±30% 1.68 2.50 0.0883 5.94
SDQ25-1R0-R 1 C 0.97 3.15 4.09 0.0252 3.63 3.87 1.58 2.05 0.1007 7.26
SDQ25-1R5-R 1.5 D 1.35 2.97 3.46 0.0283 4.29 5.41 1.49 1.73 0.1130 8.58
SDQ25-2R2-R 2.2 E 2.31 2.67 2.65 0.0351 5.61 9.25 1.34 1.32 0.1402 11.2
SDQ25-3R3-R 3.3 F 2.89 2.50 2.37 0.0399 6.27 11.55 1.25 1.18 0.1595 12.5
SDQ25-4R7-R 4.7 G 5 1.96 1.80 0.0653 8.25 20.00 0.98 0.900 0.2612 16.5
SDQ25-6R8-R 6.8 H 6.73 1.84 1.55 0.0741 9.57 26.91 0.918 0.776 0.2964 19.1
SDQ25-8R2-R 8.2 J 8.71 1.57 1.36 0.1015 10.9 34.85 0.785 0.682 0.4059 21.8
SDQ25-100-R 10 K 9.8 1.53 1.29 0.1068 11.6 39.20 0.765 0.643 0.4273 23.1
SDQ25-150-R 15 L 14.79 1.24 1.05 0.1632 14.2 59.17 0.619 0.523 0.6526 28.4
SDQ25-220-R 22 M 22.47 1.01 0.849 0.2431 17.5 89.89 0.507 0.425 0.9724 35.0
SDQ25-330-R 33 N 33.8 0.812 0.692 0.3795 21.5 135.2 0.406 0.346 1.52 42.9
SDQ25-470-R 47 O 47.43 0.749 0.584 0.4461 25.4 189.7 0.374 0.292 1.78 50.8
SDQ25-680-R 68 P 69.19 0.603 0.484 0.6865 30.7 276.8 0.302 0.242 2.75 61.4
SDQ25-820-R 82 Q 81.61 0.580 0.446 0.7435 33.3 326.4 0.290 0.223 2.97 66.7
SDQ25-101-R 100 R 98.57 0.499 0.405 1.00 36.6 394.3 0.249 0.203 4.02 73.3
SDQ25-151-R 150 S 150.2 0.408 0.328 1.50 45.2 600.6 0.204 0.164 6.00 90.4
SDQ25-221-R 220 T 223.1 0.326 0.269 2.36 55.1 892.4 0.163 0.135 9.42 110
SDQ25-331-R 330 U 329.7 0.292 0.222 2.93 67.0 1318.7 0.146 0.111 11.71 134
SDQ25-471-R 470 V 472.4 0.243 0.185 4.25 80.2 1889.6 0.121 0.093 16.99 160
SDQ25-681-R 680 W 677.4 0.197 0.155 6.45 96.0 2709.8 0.098 0.077 25.78 192
SDQ25-821-R 820 X 824.3 0.186 0.140 7.25 106 3297.3 0.093 0.070 28.99 212
SDQ25-102-R 1000 Y 1008.2 0.160 0.127 9.82 117 4032.8 0.080 0.063 39.26 234
(1) Test Parameters: 100 kHz,.0.25 Vrms 0.0 Adc
(2) Irms: DC current for approximately ΔT of 40 °C without core loss. It is recommended that the
temperature of the part not to exceed +125 °C. Derating is necessary for AC currents
(3) Isat: Peak current for approximately 30% rolloff @ +20 °C
(4) DCR limits @ +20 °C
(5) Applied Volt-Time product (V-µs) across the inductor at 100 kHz necessary to generate a core loss equal
to 10% of the total losses for a 40 °C temperature rise. Derating of the Irms is required to
prevent excessive temperature rise.
Part Number Definition:
SDQ12-XXX-R
SDQ12 = Product code and Size
XXX = Inductance in uH,R = Decimal point
If no R is present,third character = # of zeros.
-R suffix indicated RoHS compliant
(A) (A) (u-sec) (A) (A) (u-sec)