Technical Data
4339
Effective
August
2017
Supersedes
June 2008
SDQ
Low-profile dual winding shielded drum inductor/transformer
Applications
•
•
•
•
•
•
•
•
Transformer: (1:1), SEPIC, flyback
Buck, boost, coupled inductor
Mobile phones
Notebook and laptop power
Digital cameras
Media players
PCMCIA cards
GPS systems
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
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
HF
FREE
HALOGEN
Technical Data
4339
Effective
August
2017
SDQ
Low-profile dual winding shielded drum inductor/transformer
Product specifications
Parallel Ratings
Isat
(3)
DCR
(4)
(
Ω
) typ.
(A)
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
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
0.0325
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
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
Isat
(3)
DCR
Ω
(4)
typ.
(A)
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
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
0.1298
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
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
SDQ12-R47-R
SDQ12-1R0-R
SDQ12-1R5-R
SDQ12-2R2-R
SDQ12-3R3-R
SDQ12-4R7-R
SDQ12-6R2-R
SDQ12-8R2-R
SDQ12-100-R
SDQ12-150-R
SDQ12-220-R
SDQ12-330-R
SDQ12-470-R
SDQ12-680-R
SDQ12-820-R
SDQ25-R47-R
SDQ25-R82-R
SDQ25-1R0-R
SDQ25-1R5-R
SDQ25-2R2-R
SDQ25-3R3-R
SDQ25-4R7-R
SDQ25-6R8-R
SDQ25-8R2-R
SDQ25-100-R
SDQ25-150-R
SDQ25-220-R
SDQ25-330-R
SDQ25-470-R
SDQ25-680-R
SDQ25-820-R
SDQ25-101-R
SDQ25-151-R
SDQ25-221-R
SDQ25-331-R
SDQ25-471-R
SDQ25-681-R
SDQ25-821-R
SDQ25-102-R
Rated
Inductance
(µH)
0.47
1
1.5
2.2
3.3
4.7
6.2
8.2
10
15
22
33
47
68
82
0.47
0.82
1
1.5
2.2
3.3
4.7
6.8
8.2
10
15
22
33
47
68
82
100
150
220
330
470
680
820
1000
Part
Marking
A
B
C
D
E
F
G
H
J
K
L
M
N
O
P
A
B
C
D
E
F
G
H
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
OCL
(1)
±20%
(µH)
0.49±30%
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
0.392±30%
0.648±30%
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
Irms
(2)
(A)
Volts
(5)
(u-sec)
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
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
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
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)
1.96±30%
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
1.57±30%
2.59±30%
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
Irms
(2)
(A)
Volts
(5)
(u-sec)
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
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
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
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: 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
2
www.eaton.com/electronics
SDQ
Low-profile dual winding shielded drum inductor/transformer
Technical Data
4339
Effective
August
2017
Dimensions- mm
Top View
Pin #1 identifier
Side View
Bottom View
1.5 typ ref
Recommended Pad Layout
2 PAD LAYOUT
4 PAD LAYOUT
Schematic
1
4
2
3
TRANSFORMER
1
4
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
5.950
4
1.5 Typ.
Ref.
1.02
2.975
2.575
5.15
R2.250
R2.250
3
PARALL EL
2
SERIES
3
SDQ12 = 1.2mm max.
SDQ25 = 2.5mm max.
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
(2nd digit is a bi-weekly production date code)
(3rd digit is the last digit of the year produced)
Packaging- mm
SDQ12
4.00
1.5 Dia.
+0.1/-0.0
1.5 Dia.
min.
Pin #1 indicator
2.00
A
1.75
4
5.45
1
3
12.0
+/-0.3
5.50
Actual Size
SDQ12
2.00
5.45
SECTION A-A
8.0
2
A
Direction of feed
Supplied in tape-and-reel packaging,3800 parts per reel, 13” diameter reel.
SDQ25
4.00
1.5 Dia.
+0.1/-0.0
1.5 Dia
min.
Pin #1 indicator
2.00
A
1.75
1
5.45
4
12.0
+/-0.3
5.50
Actual Size
SDQ25
2
2.70 mm
5.45
SECTION A-A
8.0
3
A
Direction of feed
Supplied in tape-and-reel packaging, 2900 parts per reel, 13” diameter reel.
www.eaton.com/electronics
3
Technical Data
4339
Effective
August
2017
SDQ
Low-profile dual winding shielded drum inductor/transformer
Core loss
I rms Derating with Core Loss
% of Losses from I
rms (maximum)
% of Applied Volt-Second
Inductance characteristics
OCL vs Isat
SDQ12
100
90
80
70
100
90
80
70
OCL vs I sat
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 I sat
% of I sat
4
www.eaton.com/electronics
SDQ
Low-profile dual winding shielded drum inductor/transformer
Technical Data
4339
Effective
August
2017
Solder reflow profile
T
P
Max. Ramp Up Rate = 3°C/s
Max. Ramp Down Rate = 6°C/s
T
L
Preheat
A
t
t
P
T
C
-5°C
Table 1 - Standard SnPb Solder (Tc)
Package
Thickness
Volume
mm3
<350
Volume
mm3
≥350
<2.5mm)
≥2.5mm
T
smax
235°C
220°C
220°C
220°C
Temperature
Table 2 - Lead (Pb) Free Solder (Tc)
T
smin
t
s
Package
Thickness
Volume
mm
3
<350
Volume
mm
3
350 - 2000
Volume
mm
3
>2000
<1.6mm
1.6 – 2.5mm
>2.5mm
25°C
Time 25°C to Peak
260°C
260°C
250°C
260°C
250°C
245°C
260°C
245°C
245°C
Time
Reference JDEC J-STD-020
Profile Feature
Standard SnPb Solder
Lead (Pb) Free Solder
Preheat and Soak
• Temperature min. (Tsmin)
• Temperature max. (Tsmax)
• Time (Tsmin to Tsmax) (ts)
100°C
150°C
60-120 Seconds
3°C/ Second Max.
183°C
60-150 Seconds
Table 1
20 Seconds**
6°C/ Second Max.
6 Minutes Max.
150°C
200°C
60-120 Seconds
3°C/ Second Max.
217°C
60-150 Seconds
Table 2
30 Seconds**
6°C/ Second Max.
8 Minutes Max.
Average ramp up rate Tsmax to Tp
Liquidous temperature (T
l
)
Time at liquidous (tL)
Peak package body temperature (TP)*
Time (tp)** within 5 °C of the specified classification temperature (Tc)
Average ramp-down rate (Tp to Tsmax)
Time 25°C to Peak Temperature
* 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.
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
© 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.
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