Ferrite shielded, low EMI
Ferrite core material
500Vdc isolation between windings
RoHS compliant
Applications
As a transformer: SEPIC, flyback
As an inductor: Buck, boost, coupled inductor
Digital cameras, CD players, cellular phones, and PDAs
PCMCIA cards
GPS systems
Environmental Data
Storage temperature: -40°C to +125°C
Operating temperature range: -40°C to +125°C
(Range is application specific).
Solder reflow temperature: 260°C max. for 10 seconds max.
Packaging
Supplied in tape and reel packaging, SDQ12-3800, SDQ25-2900 parts
per reel, 13” diameter reel
Description
125°C maximum total temperature operation
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 6.43 to 0.063 Amps
Inductance range from 0.47µH to 4.03mH
Low-Profile Dual Winding Shielded Inductor/Transformer
SDQ Series
06-13-08 SB-BU08352 Page 1 of 4 Data Sheet: 4339
SMD Device
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%% AAmmppssAAmmppss((ΩΩ)) ttyypp..µµ--SSeecc±±2200%%AAmmppss AAmmppssttyypp..µµ--SSeecc
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
(1) Test Parameters:100kHz,.0.25 Vrms 0.0Adc
(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 100kHz 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
Dimensions - 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 LAYOUT
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.
Part marking:Line 1 (1st digit inductance value per part marking designator in chart above) (2nd digit is a bi-weekly production date code) (3rd digit is the last digit of the year produced)
Line 2:xx (indicates the product size code)
06-13-08 SB-BU08352 Page 2 of 4 Data Sheet: 4339
PPaarraalllleell RRaattiinnggssSSeerriieess RRaattiinnggss
RRaatteeddPPaarrttOOCCLL ((11))IIrrmmss((22))IIssaatt((33))DDCCRR ((44))VVoollttss ((55))OOCCLL ((11))IIrrmmss((22))IIssaatt((33))DDCCRR Ω
Ω((44))VVoollttss ((55))
PPaarrttIInndduuccttaanncceeMMaarrkkiinngg±±2200%% AAmmppssAAmmppss((ΩΩ)) ttyypp..µµ--SSeecc±±2200%%AAmmppss AAmmppssttyypp..µµ--SSeecc
NNuummbbeerr((µµHH))((µµHH))ttyypp..((µµHH))ttyypp..
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:100kHz,.0.25 Vrms 0.0Adc
(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 100kHz 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
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
06-13-08 SB-BU08352 Page 3 of 4 Data Sheet: 4339
Supplied in tape-and-reel packaging,3800 parts per reel, 13” diameter reel.
Supplied in tape-and-reel packaging, 2900 parts per reel, 13” diameter reel.
Packaging Information - mm
Inductance Characteristics
Actual Size
SDQ12
Actual Size
SDQ25
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 102030405060708090100110120
% of I
OCL (%)
sat
sat
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 Series
SDQ12 Series
© 2008 Cooper Bussmann
St. Louis, MO 63178
www.cooperbussmann.com
06-13-08 SB-BU08352 Page 4 of 4 Data Sheet: 4339
The only controlled copy of this Data Sheet is the electronic read-only version located on the Cooper Bussmann Network Drive. All other copies of this document are by definition uncontrolled. This
bulletin is intended to clearly present comprehensive product data and provide technical information that will help the end user with design applications. Cooper Bussmann reserves the right, with-
out notice,to change design or construction of any products and to discontinue or limit distribution of any products. Cooper Bussmann also reserves the right to change or update,without notice,any
technical information contained in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications.
Life Support Policy: Cooper Bussmann does not authorize the use of an y 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.
North America
Cooper Electronic Technologies
1225 Broken Sound Parkway NW
Suite F
Boca Raton, FL 33487-3533
Tel:1-561-998-4100
Fax:1-561-241-6640
Toll Free:1-888-414-2645
Cooper Bussmann
P.O. Box 14460
St.Louis,MO 63178-4460
Tel:1-636-394-2877
Fax:1-636-527-1607
Europe
Cooper Electronic Technologies
Cooper (UK) Limited
Burton-on-the-Wolds
Leicestershire • LE12 5TH UK
Tel:+44 (0) 1509 882 737
Fax:+44 (0) 1509 882 786
Cooper Electronic Technologies
Avda.Santa Eulalia,290
08223
Terrassa,(Barcelona),Spain
Tel:+34 937 362 812
+34 937 362 813
Fax:+34 937 362 719
Asia Pacific
Cooper Electronic Technologies
1 Jalan Kilang Timor
#06-01 Pacific Tech Centre
Singapore 159303
Tel:+65 278 6151
Fax:+65 270 4160
Core Loss
I Derating with Core Loss
% of Applied Volt-Second
% of Losses from I (maximum)
rms
rms