Technical Data 4339
Effective August 2017
Supersedes June 2008
SDQ
Low-profile dual winding shielded drum inductor/transformer
Product features
Dual winding inductors that can be used as
either a single inductor, or in coupled
inductor/transformer applications (1:1 turns
ratio)
Windings can be connected in series or
parallel, offering a broad range of inductance
and current ratings
Current range from 0.063 A to 6.43 A
Inductance range from 0.47 µH to 4.03 mH
Ferrite shielded, low EMI
Ferrite core material
500 Vdc isolation between windings
Applications
Transformer: (1:1), SEPIC, flyback
Buck, boost, coupled inductor
Mobile phones
Notebook and laptop power
Digital cameras
Media players
PCMCIA cards
GPS systems
Environmental Data
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
Pb
HALOGEN
HF
FREE
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)
3
Technical Data 4339
Effective August 2017
www.eaton.com/electronics
SDQ
Low-profile dual winding shielded drum inductor/transformer
Dimensions- mm
Packaging- mm
5.2
Max
Part marking
(Note A)
4
3
5.2
Max
1
Pin #1 identifier
2
HT
1.5 typ ref
3
1
2
4
1.5 Typ.
Ref. 1.02
2.575
5.15
4
1
2.975
2.975
R2.250
5.95
5.950
R2.250
2.975
2.975
5.950
23
4 PAD LA YOUT
2 PAD LAYOUT
2
3
2
SERIES
PARALL EL
3
1
4
1
TRANSFORMER
2
14
4
3
Top View Side View Bottom View Recommended Pad Layout Schematic
SDQ12 = 1.2mm max.
SDQ25 = 2.5mm max.
(2nd digit is a bi-weekly production date code) (3rd digit is the last digit of the year produced)Part marking:Line 1 (1st digit inductance value per part marking designator in chart above)
Line 2:xx (indicates the product size code)
Do not route traces or vias underneath the inductor
5.45
Direction of feed
Pin #1 indicator
12.0
+/-0.3
1.75
1.5 Dia.
+0.1/- 0.0
1.5 Dia.
min.
8.0
A
A
2.00
SECTION A-A
4.00
2.00
1
2
4
3
5.50
5.45
Supplied in tape-and-reel packaging,3800 parts per reel, 13” diameter reel.
Actual Size
SDQ12
Supplied in tape-and-reel packaging, 2900 parts per reel, 13” diameter reel.
Actual Size
SDQ25
2.00
4.00
Direction of feed
Pin #1 indicator
12.0
+/-0.3
5.50
1.75
1.5 Dia.
+0.1/- 0.0
1.5 Dia
min.
8.0
A
2
1
A
SECTION A-A
4
3
5.45
5.45
2.70 mm
SDQ25
SDQ12
4
www.eaton.com/electronics
Technical Data 4339
Effective August 2017
Core loss
SDQ
Low-profile dual winding shielded drum inductor/transformer
Inductance characteristics
II
rms Derating with Core Loss
% of Applied Volt-Second
% of Losses from I rms
(maximum)
OCL vs I
SDQ12
0
10
20
30
40
50
60
70
80
90
100
0 10 20 30 40 50 60 70 80 90 100 110 120
% of I
OCL (%)
sat
sat
OCL vs I
SDQ25
0
10
20
30
40
50
60
70
80
90
100
0 01 20 03 40 05 60 07 08 90100110120
% of I
OCL (%)
sat
sat
© 2017 Eaton
All Rights Reserved
Printed in USA
Publication No. 4339 SB-BU08352
August 2017
Eaton is a registered trademark.
All other trademarks are property
of their respective owners.
Technical Data 4339
Effective August 2017
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
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 = C/s
Max. Ramp Down Rate = C/s
Solder reflow profile
Reference JDEC J-STD-020
Profile Feature Standard SnPb Solder Lead (Pb) Free Solder
Preheat and Soak • Temperature min. (Tsmin) 100°C 150°C
• Temperature max. (Tsmax) 150°C 200°C
• Time (Tsmin to Tsmax) (ts)60-120 Seconds 60-120 Seconds
Average ramp up rate Tsmax to Tp3°C/ Second Max. 3°C/ Second Max.
Liquidous temperature (Tl)
Time at liquidous (tL)
183°C
60-150 Seconds
217°C
60-150 Seconds
Peak package body temperature (TP)* Table 1 Table 2
Time (tp)** within 5 °C of the specified classification temperature (Tc)20 Seconds** 30 Seconds**
Average ramp-down rate (Tp to Tsmax)6°C/ Second Max. 6°C/ Second Max.
Time 25°C to Peak Temperature 6 Minutes Max. 8 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.
Table 1 - Standard SnPb Solder (Tc)
Package
Thickness
Volume
mm3
<350
Volume
mm3
350
<2.5mm) 235°C 220°C
2.5mm 220°C 220°C
Table 2 - Lead (Pb) Free Solder (Tc)
Package
Thickness
Volume
mm3
<350
Volume
mm3
350 - 2000
Volume
mm3
>2000
<1.6mm 260°C 260°C 260°C
1.6 – 2.5mm 260°C 250°C 245°C
>2.5mm 250°C 245°C 245°C
SDQ
Low-profile dual winding shielded drum inductor/transformer
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Eaton:
SDQ12-R47-R SDQ12-1R0-R SDQ12-1R5-R SDQ12-100-R SDQ12-150-R SDQ12-2R2-R SDQ12-220-R SDQ12-
3R3-R SDQ12-330-R SDQ12-4R7-R SDQ12-470-R SDQ12-6R2-R SDQ12-680-R SDQ12-8R2-R SDQ12-820-R
SDQ25-R47-R SDQ25-R82-R SDQ25-1R0-R SDQ25-1R5-R SDQ25-100-R SDQ25-101-R SDQ25-102-R SDQ25-
150-R SDQ25-151-R SDQ25-2R2-R SDQ25-220-R SDQ25-221-R SDQ25-3R3-R SDQ25-330-R SDQ25-331-R
SDQ25-4R7-R SDQ25-470-R SDQ25-471-R SDQ25-6R8-R SDQ25-680-R SDQ25-681-R SDQ25-8R2-R SDQ25-
820-R SDQ25-821-R SDQ25-100-H