®
SD Series
High Power Density,
Low Profile, Shielded Inductors
Description
• Six sizes of shielded drum core inductors with low
profiles (as low as 1.0mm) and high power density
• Inductance range from .47uH to 1000uH
• Current range from 6.00 to 0.088 Amps
• Ferrite shielded, low EMI
Applications
• Digital cameras, CD players, cellular phones, and PDAs
• PCMCIA cards
• GPS systems
Environmental Data
• Storage temperature range: -40C to +125C
• Operating ambient temperature range: -40C to +85C
(range is application specific). Temperature rise is
approximately 40C at rated rms current
• Infrared reflow temperature: +240C for 30 seconds
maximum
Part Number
SD10-R47
SD10-1R0
SD10-1R5
SD10-2R2
SD10-3R3
SD10-4R7
SD10-6R2
SD10-8R2
SD10-100
SD10-150
SD10-220
SD10-330
SD10-470
SD10-680
SD10-820
SD10-101
SD10-151
SD10-221
SD10-331
SD10-471
SD12-R47
SD12-1R2
SD12-1R5
SD12-2R2
SD12-3R3
SD12-4R7
SD12-6R2
SD12-8R2
SD12-100
SD12-150
SD12-220
SD12-330
SD12-470
SD12-680
SD12-820
SD12-101
SD12-151
Rated
Inductance
(µH)
0.470
1.00
1.50
2.20
3.30
4.70
6.20
8.20
10.0
15.0
22.0
33.0
47.0
68.0
82.0
100
150
220
330
470
0.470
1.20
1.50
2.20
3.30
4.70
6.20
8.20
10.0
15.0
22.0
33.0
47.0
68.0
82.0
100
150
OCL (1)
+/-20%
(µH)
0.453
1.119
1.563
2.081
3.339
4.893
6.743
8.889
10.07
15.55
22.21
32.20
46.63
70.01
83.48
102.0
149.2
222.2
330.4
468.3
0.490
1.21
1.69
2.25
3.61
4.41
6.25
8.41
10.89
15.21
22.09
32.49
47.61
68.89
82.81
98.0
151.3
Part
Marking
A
B
C
D
E
F
G
H
J
K
L
M
N
O
P
Q
R
S
T
U
A
B
C
D
E
F
G
H
J
K
L
M
N
O
P
Q
R
Packaging
• Supplied in tape and reel packaging, 3800 (SD10, SD12
and SD18), 2900 (SD20 and SD25), and 3500 (SD52)
per reel
Irms (2)
Amperes
2.59
1.93
1.60
1.35
1.24
1.04
0.94
0.800
0.760
0.613
0.498
0.412
0.337
0.301
0.258
0.225
0.200
0.161
0.130
0.117
3.19
2.62
2.19
1.83
1.55
1.46
1.21
1.02
0.938
0.782
0.628
0.519
0.428
0.341
0.326
0.308
0.251
Isat (3)
Amperes
3.54
2.25
1.91
1.65
1.31
1.08
0.92
0.800
0.752
0.605
0.506
0.420
0.349
0.285
0.261
0.236
0.195
0.160
0.131
0.110
3.86
2.45
2.08
1.80
1.42
1.29
1.08
0.931
0.818
0.692
0.574
0.474
0.391
0.325
0.297
0.273
0.220
DCR (4)
(Ω)
Typ.
0.0249
0.0448
0.0653
0.0912
0.1078
0.1535
0.1870
0.2607
0.2888
0.4429
0.6718
0.9807
1.47
1.84
2.50
3.29
4.15
6.41
9.83
12.10
0.0246
0.0366
0.0521
0.0747
0.1043
0.1177
0.1699
0.2399
0.2844
0.4089
0.6338
0.9289
1.37
2.16
2.36
2.64
3.96
Volt
u-sec
Typ.
2.1
3.3
3.9
4.5
5.7
6.9
8.1
9.3
9.9
12.3
14.7
17.7
21.3
26.1
28.5
31.5
38.1
46.5
56.7
67.5
2.84
4.47
5.28
6.09
7.71
8.53
10.15
11.77
13.40
15.83
19.08
23.14
28.01
33.70
36.95
40.19
49.94
(1) Open Circuit Inductance Test Parameters: 100KHz, 0.25Vrms, 0.0Adc.
(2) RMS current for an approximate
∆T
of 40°C without core loss. It is
recommended that the temperature of the part not exceed 125°C.
(3) Peak current for approximate 30% roll off at 20°C.
(4) DCR limits @ 20°C.
5) Applied Volt-Time product (V-uS) across the inductor at 100kHz necessary to
generate a core loss equal to 10% of the total losses for 40°C temperature rise.
®
SD Series
High Power Density,
Low Profile, Shielded Inductors
Part Number
SD12-221
SD12-331
SD12-471
SD12-681
SD12-821
SD12-102
SD18-R47
SD18-R82
SD18-1R2
SD18-1R5
SD18-2R2
SD18-3R3
SD18-4R7
SD18-6R2
SD18-8R2
SD18-100
SD18-150
SD18-220
SD18-330
SD18-470
SD18-680
SD18-820
SD18-101
SD18-151
SD18-221
SD18-331
SD18-471
SD18-681
SD18-821
SD18-102
SD20-R47
SD20-1R2
SD20-1R5
SD20-2R2
SD20-3R3
SD20-4R7
SD20-6R2
SD20-8R2
SD20-100
SD20-150
SD20-220
SD20-330
SD20-470
SD20-680
SD20-820
SD20-101
SD20-151
SD20-221
SD20-331
SD20-471
SD20-681
SD20-821
SD20-102
SD25-R47
SD25-R82
SD25-1R2
SD25-1R5
SD25-2R2
Rated
Inductance
(µH)
220
330
470
680
820
1000
0.47
0.82
1.20
1.50
2.20
3.30
4.70
6.20
8.20
10.0
15.0
22.0
33.0
47.0
68.0
82.0
100
150
220
330
470
680
820
1000
0.47
1.20
1.50
2.20
3.30
4.70
6.20
8.20
10.0
15.0
22.0
33.0
47.0
68.0
82.0
100
150
220
330
470
680
820
1000
0.47
0.82
1.20
1.50
2.20
OCL (1)
+/-20%
(µH)
222.0
334.9
462.3
670.8
800.9
992.3
0.49
0.81
1.21
1.69
2.25
3.61
4.41
6.25
8.41
10.89
15.21
22.09
32.49
47.61
68.89
82.81
102.01
151.29
222.01
334.89
479.61
681.21
823.69
1004
0.490
1.21
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
98.01
151.3
222.0
327.6
470.9
681.2
823.7
1004.9
0.466
0.770
1.15
1.61
2.14
Part
Marking
S
T
U
V
W
X
A
B
C
D
E
F
G
H
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
A
B
C
D
E
F
G
H
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
A
B
C
D
E
Irms (2)
Amperes
0.229
0.186
0.167
0.149
0.129
0.121
3.58
3.24
2.97
2.73
2.55
2.07
1.77
1.61
1.38
1.28
1.06
0.876
0.715
0.578
0.514
0.446
0.419
0.345
0.296
0.248
0.201
0.167
0.145
0.136
3.59
3.07
2.88
2.45
2.17
2.05
1.89
1.61
1.53
1.25
1.12
0.913
0.745
0.610
0.576
0.495
0.435
0.356
0.294
0.263
0.216
0.204
0.172
3.88
3.58
3.33
3.12
2.93
Isat (3)
Amperes
0.181
0.148
0.126
0.104
0.095
0.086
4.63
3.60
2.95
2.49
2.16
1.71
1.54
1.30
1.12
0.982
0.831
0.689
0.568
0.470
0.390
0.356
0.321
0.263
0.217
0.177
0.148
0.124
0.113
0.102
4.00
2.55
2.15
1.87
1.47
1.33
1.12
0.966
0.903
0.718
0.596
0.491
0.406
0.337
0.308
0.283
0.228
0.188
0.155
0.129
0.107
0.098
0.088
6.00
4.67
3.81
3.23
2.80
DCR (4)
(Ω)
Typ.
4.76
7.25
8.95
11.30
14.93
17.20
0.0201
0.0247
0.0294
0.0345
0.0398
0.0605
0.0824
0.1000
0.1351
0.1584
0.2278
0.3366
0.5057
0.7732
0.9798
1.30
1.47
2.18
2.95
4.20
6.39
9.28
12.35
14.01
0.0200
0.0275
0.0312
0.0429
0.0547
0.0612
0.0720
0.1000
0.1100
0.1655
0.2053
0.3100
0.4650
0.6947
0.7785
1.06
1.37
2.04
2.99
3.74
5.56
6.22
8.73
0.0177
0.0208
0.0240
0.0274
0.0311
Volt
u-sec
Typ.
60.49
74.30
87.29
105
115
128
2.35
3.02
3.70
4.37
5.04
6.38
7.06
8.40
9.74
11.09
13.10
15.79
19.15
23.18
27.89
30.58
33.94
41.33
50.06
61.49
73.58
87.70
96.43
107
2.28
3.58
4.23
4.88
6.18
6.83
8.13
9.43
10.08
12.68
15.28
18.53
22.43
26.98
29.58
32.18
39.98
48.43
58.83
70.53
84.83
93.28
103
2.13
2.74
3.34
3.95
4.56
(1) Open Circuit Inductance Test Parameters: 100KHz, 0.25Vrms, 0.0Adc.
(2) RMS current for an approximate
∆T
of 40°C without core loss. It is
recommended that the temperature of the part not exceed 125°C.
(3) Peak current for approximate 30% roll off at 20°C.
(4) DCR limits @ 20°C.
5) Applied Volt-Time product (V-uS) across the inductor at 100kHz necessary to
generate a core loss equal to 10% of the total losses for 40°C temperature rise.
®
SD Series
High Power Density,
Low Profile, Shielded Inductors
Part Number
SD25-3R3
SD25-4R7
SD25-6R8
SD25-8R2
SD25-100
SD25-150
SD25-220
SD25-330
SD25-470
SD25-680
SD25-820
SD25-101
SD25-151
SD25-221
SD25-331
SD25-471
SD25-681
SD25-821
SD25-102
Rated
Inductance
(µH)
3.30
4.70
6.80
8.20
10.0
15.0
22.0
33.0
47.0
68.0
82.0
100
150
220
330
470
680
820
1000
OCL (1)
+/-20%
(µH)
3.43
5.03
6.93
7.99
10.35
14.45
22.81
33.07
47.89
68.64
82.17
100.79
148.4
222.4
332.2
472.4
677.2
826.7
1003.4
Part
Marking
F
G
H
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Irms (2)
Amperes
2.64
2.39
2.19
1.92
1.80
1.67
1.34
1.11
0.919
0.741
0.713
0.670
0.553
0.446
0.359
0.293
0.262
0.230
0.216
Isat (3)
Amperes
2.21
1.83
1.56
1.45
1.27
1.08
0.857
0.711
0.592
0.482
0.441
0.398
0.328
0.268
0.219
0.184
0.154
0.139
0.126
DCR (4)
(Ω)
Typ.
0.0384
0.0467
0.0556
0.0724
0.0824
0.0956
0.1478
0.2149
0.3156
0.4850
0.5242
0.5937
0.8723
1.34
2.07
3.10
3.88
5.04
5.70
Volt
u-sec
Typ.
5.78
6.99
8.21
8.82
10.03
11.86
14.90
17.94
21.58
25.84
28.27
31.31
38.00
46.51
56.85
67.79
81.17
89.68
98.80
(1) Open Circuit Inductance Test Parameters: 100KHz, 0.25Vrms, 0.0Adc.
(2) RMS current for an approximate
∆T
of 40°C without core loss. It is
recommended that the temperature of the part not exceed 125°C.
(3) Peak current for approximate 30% roll off at 20°C.
(4) DCR limits @ 20°C.
5) Applied Volt-Time product (V-uS) across the inductor at 100kHz necessary to
generate a core loss equal to 10% of the total losses for 40°C temperature rise.
Mechanical Diagrams
SD Series
TOP VIEW
Pin # 1
identifier
RECOMMENDED PCB LAYOUT
SIDE VIEW
2 PAD LAYOUT
4 PAD LAYOUT
BOTTOM VIEW
1
5.2
Max
a
1
1.0
1.5 Typ.
Ref.
HT
2
2.975
2
2.575
5.15
SCHEMATIC
5.95
9
2.975
2
2.975
5.950
2
5.950
9
1
R2.250
R2.250
Part marking
(Note A)
2
5.2
Max
2
(see chart below)
Series
SD10
SD12
SD18
SD20
SD25
HT
1.0mm max
1.2mm max
1.8mm max
2.0mm max
2.5mm max
A) Part Marking: Line 1: (1st digit indicates the 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: 12 (indicates the product size code)
®
SD Series
High Power Density,
Low Profile, Shielded Inductors
Packaging Information
SD10 Series
4.00
2
2.00
±
0.05
1.5 Dia.
+0.1/-0.0
1.5 Dia
min.
A
1.75
1
B
Bo
5.50
12.0
+/-0.3
0
2
ACTUAL SIZE
SD10
Ao=5.45mm
Bo=5.45mm
Ko=1.20mm
Ko
A
Ao
SECTION A-A
8.0
A
Direction of feed
Parts packaged on 13" Diameter reel,
3,800 parts per reel.
SD12/18 Series
4.00
1.5 Dia.
+0.1/-0.0
1.5 Dia
min.
2.00
±
0.05
A
1.75
1
Bo
5.50
12.0
+/-0.3
2
ACTUAL SIZE
SD12
ACTUAL SIZE
SD18
Ao=5.45mm
Bo=5.45mm
Ko=2.00mm
Ko
Ao
SECTION A-A
8.0
A
Direction of feed
Parts packaged on 13" Diameter reel,
3,800 parts per reel.
SD20/25 Series
4.00
1.5 Dia.
+0.1/-0.0
1.5 Dia
min.
2.00
±
0.05
A
1.75
1
B
Bo
5.50
12.0
+/-0.3
0
2
Ko
ACTUAL SIZE
SD20
ACTUAL SIZE
SD25
Ao=5.45mm
Bo=5.45mm
Ko=2.70mm
A
Ao
SECTION A-A
A
80
8.0
Direction of feed
Parts packaged on 13" Diameter reel,
2,900 parts per reel.
Dimensions are in millimeters.
®
SD Series
High Power Density,
Low Profile, Shielded Inductors
DC Current vs. Temperature
SD10-220
100.0
100.0
SD10-471
Temperature Rise (Deg. C)
90.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
0.00
Temperature Rise (Deg. C)
90.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.05
0.09
0.14
0.18
0.23
Idc (A)
Idc (A)
SD12-330
100.0
100.0
90.0
SD12-470
Temperature Rise (Deg. C)
Temperature Rise (Deg. C)
90.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
0.00
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.10
0.20
0.30
0.40
0.50
0.60
0.70
Idc (A)
Idc (A)
SD18-100
100.0
100.0
90.0
SD18-101
Temperature Rise (Deg. C)
90.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
0.00
Temperature Rise (Deg. C)
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
Idc (A)
Idc (A)
SD20-100
100.0
100.0
SD20-101
Temperature Rise (Deg. C)
90.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
0.00
Temperature Rise (Deg. C)
90.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
0.0
0.4
0.8
1.2
1.6
2.0
2.4
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
Idc (A)
Idc (A)
SD25-100
100.0
90.0
SD25-101
100.0
Temperature Rise (Deg. C)
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Temperature Rise (Deg. C)
90.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
0.00
0.20
0.40
0.60
0.80
1.00
1.20
Idc (A)
Idc (A)
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