®
SDQ Series
Low Profile Dual Winding
Shielded Inductor/Transformer
Description
• 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
• Ferrite shielded, low EMI
• RoHS compliant (-R option)
Applications
• As a transformer: SEPIC, flyback
• As an inductor: Buck, boost, coupled inductor
• Digital cameras, CD players, cellular phones, and PDA’s
• PCMCIA cards
• GPS systems
Environmental Data
• Storage temperature: -40°C to +125°C
• Operating temperature: -40°C to +85°C (Range is
application specific). Temperature rise is approximately
40°C at rated rms current.
• IR reflow temperature: 240°C for 30 seconds max.
Packaging
• Supplied in tape and reel packaging, SDQ12 (3,800,
SDQ25 (2,900) parts per reel
Part Number
SDQ12-R47
SDQ12-1R0
SDQ12-1R5
SDQ12-2R2
SDQ12-3R3
SDQ12-4R7
SDQ12-6R2
SDQ12-8R2
SDQ12-100
SDQ12-150
SDQ12-220
SDQ12-330
SDQ12-470
SDQ12-680
SDQ12-820
Rated
Part
Inductance Marking
(µH)
0.47
A
1
B
1.5
C
2.2
D
3.3
E
4.7
F
6.2
G
8.2
H
10
J
15
K
22
L
33
M
47
N
68
O
82
P
OCL (1)
+/-20%
(µH)
0.49
0.81
1.69
2.25
3.61
4.41
6.25
8.41
9.61
15.21
22.09
32.49
47.61
68.89
82.81
Parallel Ratings
I rms (2) I sat (3) DCR
Ω
(4)
Amperes Amperes
typ.
2.78
2.49
1.69
1.60
1.28
1.12
1.02
0.868
0.831
0.658
0.548
0.439
0.401
0.326
0.309
4.34
3.38
2.34
2.03
1.60
1.45
1.22
1.05
0.981
0.779
0.647
0.533
0.441
0.366
0.334
0.0325
0.0403
0.0870
0.0977
0.1527
0.1990
0.2387
0.3318
0.3620
0.5766
0.8332
1.29
1.55
2.36
2.62
Volt (5)
µ-Sec
typ.
2.45
3.15
4.55
5.25
6.65
7.35
8.75
10.15
10.85
13.65
16.45
19.95
24.15
29.05
31.85
OCL (1)
+/-20%
(µH)
1.96
3.24
6.76
9.00
14.44
17.64
25.00
33.64
38.44
60.84
88.36
130.0
190.4
275.6
331.2
Series Ratings
I rms (2) I sat (3) DCR
Ω
(4)
Amperes Amperes
typ.
1.39
1.25
0.847
0.800
0.640
0.560
0.512
0.434
0.416
0.329
0.274
0.220
0.201
0.163
0.154
2.17
1.69
1.17
1.01
0.800
0.724
0.608
0.524
0.490
0.390
0.323
0.267
0.220
0.183
0.167
0.1298
0.1611
0.3481
0.3908
0.6106
0.7959
0.9548
1.33
1.45
2.31
3.33
5.18
6.21
9.43
10.49
Volt (5)
µ-Sec
typ.
4.90
6.30
9.10
10.5
13.3
14.7
17.5
20.3
21.7
27.3
32.9
39.9
48.3
58.1
63.7
1) Test Parameters: 100kHz,.0.25 Vrms 0.0Adc
2) Rms current for approximately
∆T
of 40°C without core loss. It is recommended
that the temperature of the part not to exceed 125°C. De-rating is necessary for
AC currents
3) 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. De-rating of the Irms is required to prevent excessive temperature rise.
Part number definition:
First 3 characters = Product code and size.
Last 3 characters = Inductance in uH. R = Decimal point. If no R is present, third
character = # of zeros.
®
SDQ Series
Low Profile Dual Winding
Shielded Inductor/Transformer
Parallel Ratings
I rms (2) I sat (3) DCR
Ω
(4)
Amperes Amperes
typ.
3.71
3.37
3.15
2.97
2.67
2.50
1.96
1.84
1.57
1.53
1.24
1.01
0.812
0.749
0.603
0.580
0.499
0.408
0.326
0.292
0.243
0.197
0.186
0.160
6.43
5.00
4.09
3.46
2.65
2.37
1.80
1.55
1.36
1.29
1.05
0.849
0.692
0.584
0.484
0.446
0.405
0.328
0.269
0.222
0.185
0.155
0.140
0.127
0.0181
0.0221
0.0252
0.0283
0.0351
0.0399
0.0653
0.0741
0.1015
0.1068
0.1632
0.2431
0.3795
0.4461
0.6865
0.7435
1.00
1.50
2.36
2.93
4.25
6.45
7.25
9.82
Series Ratings
I rms (2) I sat (3) DCR
Ω
(4)
Amperes Amperes
typ.
1.86
1.68
1.58
1.49
1.34
1.25
0.98
0.918
0.785
0.765
0.619
0.507
0.406
0.374
0.302
0.290
0.249
0.204
0.163
0.146
0.121
0.098
0.093
0.080
3.21
2.50
2.05
1.73
1.32
1.18
0.900
0.776
0.682
0.643
0.523
0.425
0.346
0.292
0.242
0.223
0.203
0.164
0.135
0.111
0.093
0.077
0.070
0.063
0.0725
0.0883
0.1007
0.1130
0.1402
0.1595
0.2612
0.2964
0.4059
0.4273
0.6526
0.9724
1.52
1.78
2.75
2.97
4.02
6.00
9.42
11.71
16.99
25.78
28.99
39.26
Part Number
SDQ25-R47
SDQ25-R82
SDQ25-1R0
SDQ25-1R5
SDQ25-2R2
SDQ25-3R3
SDQ25-4R7
SDQ25-6R8
SDQ25-8R2
SDQ25-100
SDQ25-150
SDQ25-220
SDQ25-330
SDQ25-470
SDQ25-680
SDQ25-820
SDQ25-101
SDQ25-151
SDQ25-221
SDQ25-331
SDQ25-471
SDQ25-681
SDQ25-821
SDQ25-102
Rated
Part
Inductance Marking
(µH)
0.47
A
0.82
B
1
C
1.5
D
2.2
E
3.3
F
4.7
G
6.8
H
8.2
J
10
K
15
L
22
M
33
N
47
O
68
P
82
Q
100
R
150
S
220
T
330
U
470
V
680
W
820
X
1000
Y
OCL (1)
+/-20%
(µH)
0.392
0.648
0.97
1.35
2.31
2.89
5
6.73
8.71
9.8
14.79
22.47
33.8
47.43
69.19
81.61
98.57
150.2
223.1
329.7
472.4
677.4
824.3
1008.2
Volt (5)
µ-Sec
typ.
2.31
2.97
3.63
4.29
5.61
6.27
8.25
9.57
10.9
11.6
14.2
17.5
21.5
25.4
30.7
33.3
36.6
45.2
55.1
67.0
80.2
96.0
106
117
OCL (1)
+/-20%
(µH)
1.57
2.59
3.87
5.41
9.25
11.55
20.00
26.91
34.85
39.20
59.17
89.89
135.2
189.7
276.8
326.4
394.3
600.6
892.4
1318.7
1889.6
2709.8
3297.3
4032.8
Volt (5)
µ-Sec
typ.
4.62
5.94
7.26
8.58
11.2
12.5
16.5
19.1
21.8
23.1
28.4
35.0
42.9
50.8
61.4
66.7
73.3
90.4
110
134
160
192
212
234
1) Test Parameters: 100kHz,.0.25 Vrms 0.0Adc
2) Rms current for approximately
∆T
of 40°C without core loss. It is recommended
that the temperature of the part not to exceed 125°C. De-rating is necessary for
AC currents
3) 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. De-rating of the Irms is required to prevent excessive temperature rise.
Part number definition:
First 3 characters = Product code and size.
Last 3 characters = Inductance in uH. R = Decimal point. If no R is present, third
character = # of zeros.
Option Code
-R
OPTION CODE
Description
RoHS compliant version
Mechanical Diagrams
TOP VIEW
Pin #1 identifier
SIDE VIEW
BOTTOM VIEW
1.5 typ ref
RECOMMENDED PCB LAYOUT
2 PAD LAYOUT
4 PAD LAYOUT
SCHEMATIC
1
4
1
2
Pa marking
rt
(Note A)
5.2
Max
4
3
5.2
Max
2
1
HT
3
2.975
1
5.95
4
3
2.975
2.975
5.950
2
2
3
TRANSFORMER
2
5.950
1.5 Typ.
4
Ref.
1.02
2.975
2.575
5.15
R2.250
R2.250
1
4
1
4
3
PARALL EL
2
SERIES
3
Series
SDQ12
SDQ25
HT
1.2mm max
2.5mm max
A) 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)
®
SDQ Series
Low Profile Dual Winding
Shielded Inductor/Transformer
Packaging Information
SDQ12 Series
2.00
4.00
1.5 Dia.
+0.1/-0.0
1.5 Dia.
min.
Pin #1 indicator
A
1.75
4
Bo
Ao=5.45 mm
Bo=5.45 mm
Ko=2.00 mm
ACTUAL SIZE
SDQ12
12.0
+/-0.3
5.50
1
3
Ko
Ao
SECTION A-A
8.0
2
A
Direction of feed
Parts packaged on 13" Diameter reel,
3,800 parts per reel.
SDQ25 Series
4.00
1.5 Dia.
+0.1/-0.0
1.5 Dia
min.
Pin #1 indicator
2.00
A
1.75
1
Bo
Ao=5.45 mm
Bo=5.45 mm
Ko=2.70 mm
4
12.0
+/-0.3
5.50
ACTUAL SIZE
SDQ25
2
Ko
Ao
SECTION A-A
8.0
3
A
Direction of feed
Parts packaged on 13" Diameter reel,
2,900 parts per reel.
Rolloff
100
90
80
70
OCL vs Isat
SDQ12
100
90
80
70
OCL vs Isat
SDQ25
OCL (%)
60
50
40
30
20
10
0
0
10
20
30
40
50
60
70
80
90
100
110
120
OCL (%)
60
50
40
30
20
10
0
0
10
20
30
40
50
60
70
80
90
100
110
120
% of Isat
% of Isat
Core Loss
Irms DERATING WITH CORE LOSS
% of Losses from Irms (maximum)
% of Applied Volt-µSecond
®
SDQ Series
Low Profile Dual Winding
Shielded Inductor/Transformer
PM-4316 7/05
© Cooper Electronic
Technologies 2005
Visit us on the Web at www.cooperET.com
3601 Quantum Boulevard Boynton Beach, Florida 33426-8638
Tel: +1-561-752-5000 Toll Free: +1-888-414-2645 Fax: +1-561-742-1178
This bulletin is intended to present product design solutions and technical information that will help the end user with design applications. Cooper Electronic
Technologies reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Cooper
Electronic Technologies 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 Electronic Technologies 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.
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