Low profile metalized shielded drum core power inductors
Product specifications
Part Number
SD3812-R47-R
SD3812-1R0-R
SD3812-1R2-R
SD3812-1R5-R
SD3812-2R2-R
SD3812-3R3-R
SD3812-4R7-R
SD3812-6R8-R
SD3812-8R2-R
SD3812-100-R
SD3812-150-R
SD3812-220-R
SD3812-330-R
SD3812-470-R
SD3812-680-R
SD3812-820-R
SD3812-101-R
SD3812-151-R
SD3812-221-R
SD3814-R47-R
SD3814-R82-R
SD3814-1R2-R
SD3814-1R5-R
SD3814-2R2-R
SD3814-3R3-R
SD3814-4R7-R
SD3814-6R8-R
SD3814-8R2-R
SD3814-100-R
SD3814-150-R
SD3814-220-R
SD3814-330-R
SD3814-470-R
SD3814-680-R
SD3814-820-R
SD3814-101-R
SD3814-151-R
SD3814-221-R
SD3814-331-R
SD3814-471-R
SD3814-681-R
Rated
Inductance
(µH)
0.47
1.0
1.2
1.5
2.2
3.3
4.7
6.8
8.2
10.0
15.0
22.0
33.0
47.0
68.0
82.0
100.0
150.0
220.0
0.47
0.82
1.2
1.5
2.2
3.3
4.7
6.8
8.2
10.0
15.0
22.0
33.0
47.0
68.0
82.0
100.0
150.0
220.0
330.0
470.0
680.0
OCL (1)
+/-15%
(µH)
0.405
0.845
1.125
1.445
2.205
3.125
4.805
6.845
8.405
10.125
15.125
21.125
32.805
47.045
68.445
80.645
99.405
149.645
218.405
0.360
0.752
1.001
1.286
1.962
2.781
4.276
6.768
8.228
9.830
14.458
21.186
32.151
47.210
67.324
81.101
98.794
149.026
217.342
326.812
470.031
680.320
Part
Marking
Designator
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
Irms (2)
(A)
2.53
2.00
1.71
1.58
1.32
1.10
0.87
0.80
0.690
0.662
0.539
0.499
0.399
0.327
0.269
0.259
0.217
0.178
0.160
2.81
2.18
1.85
1.76
1.43
1.31
1.06
0.87
0.753
0.713
0.574
0.519
0.418
0.346
0.285
0.270
0.228
0.191
0.170
0.136
0.111
0.100
Isat (3)
(A)
3.89
2.69
2.33
2.06
1.67
1.40
1.13
0.95
0.854
0.778
0.636
0.538
0.432
0.361
0.299
0.276
0.248
0.202
0.167
4.44
3.08
2.67
2.35
1.90
1.60
1.29
1.03
0.930
0.851
0.702
0.580
0.471
0.388
0.325
0.296
0.268
0.219
0.181
0.148
0.123
0.102
DCR (4)
(Ω)
Typ.
0.030
0.048
0.066
0.078
0.111
0.159
0.256
0.299
0.406
0.441
0.665
0.776
1.212
1.809
2.666
2.885
4.099
6.130
7.585
0.020
0.033
0.046
0.051
0.077
0.093
0.141
0.207
0.279
0.311
0.481
0.589
0.908
1.322
1.951
2.174
3.048
4.359
5.480
8.59
12.85
15.78
Volt (5)
u-sec
Typ.
2.52
3.64
4.20
4.76
5.88
7.0
8.7
10.4
11.5
12.6
15.4
18.2
22.7
27.2
32.8
36
39
48
59
2.16
3.12
3.60
4.08
5.04
6.0
7.4
9.4
10.3
11.3
13.7
16.6
20.4
24.7
29.5
32
36
44
53
65
78
94
d.
nd lete
) a ep
2
2 d
81 is 12-V
3
D ry 25
(S to PI
16 ven M
20 in
or
ly til
4,
u n
J u
1
ve or , SD
ti )
ec 14 -V2 t.
ff 8
, E D3 012 en
ed (S PI4 cem
nu 16 M
ti 0
la
on t 2 iew rep
sc s ev
i u
te
D g
r rna
u se te
A ea al
l
P an
as
(1)
Test Parameters: 100
kHz,
0.100 Vrms, 0.0 Adc.
(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.
De-rating is necessary for AC currents.
(3)
Peak current for approximately 30% rolloff at
+20
°C.
(4)
DCR limits @
+20
°C.
(5)
Applied Volt-Time product (V-us) across the inductor at 100 kHz necessary to
generate a core loss equal to 10% of the total losses for 40 °C temperature
rise. De-rating of the Irms is required to prevent excessive temperature rise.
2
www.eaton.com/electronics
SD38
Low profile metalized shielded drum core power inductors
Technical Data
4318
Effective
October
2017
Dimensions- mm
SD3812
TOP VIEW
Pin #1 indicator
Marking
(see note A)
1.2
max
BOTTOM VIEW
SIDE VIEW
4.8
MA X
3.65
typ
0.09 max
no plating
1.25
±0.12
d.
nd lete
) a ep
2
2 d
81 is 12-V
3
D ry 25
(S to PI
16 ven M
20 in
or
ly til
4,
u n
J u
1
ve or , SD
ti )
ec 14 -V2 t.
ff 8
, E D3 012 en
ed (S PI4 cem
nu 16 M
ti 0
la
on t 2 iew rep
sc s ev
i u
te
D g
r rna
u se te
A ea al
l
P an
as
2.03
±.
02
4.0
max
4.0
max
0.415 min
RECOMMENDED PCB LAYOUT
1.0
2 plcs
SCHEMATIC
2.5
2plcs
4.0 typ
5.0
Note A: 3 digit marking. First digit indicates inductance value per chart above.
Second digit indicates bi-weekly date code.
Third digit of year produced. Box indicates SD3814 part.
Do not route traces or vias underneath the inductor
SD3814
TOP VIEW
SIDE VIEW
1.4
max
BOTTOM VIEW
4.8
MA X
3.65
typ
0.09 max
no plating
Pin #1 indicator
Marking
(see note A)
1.25
±0.12
2.03
±.02
4.0
max
4.0
max
0.415 min
RECOMMENDED PCB LAYOUT
1.0
2 plcs
SCHEMATIC
2.5
2 plcs
4.0 typ
5.0
Note A: 3 digit marking. First digit indicates inductance value per chart above.
Second digit indicates bi-weekly date code.
Third digit of year produced. Box indicates SD3814 part.
Do not route traces or vias underneath the inductor
www.eaton.com/electronics
3
Technical Data
4318
Effective
October
2017
SD38
Low profile metalized shielded drum core power inductors
Packaging information- mm
4.00
2.00
±
0.05
1.5 Dia.
+0.1/-0.0
1.5 Dia
min.
1.75
OCL (%)
d.
nd lete
) a ep
2
2 d
81 is 12-V
3
D ry 25
(S to PI
16 ven M
20 in
or
ly til
4,
u n
J u
1
ve or , SD
ti )
ec 14 -V2 t.
ff 8
, E D3 012 en
ed (S PI4 cem
nu 16 M
ti 0
la
on t 2 iew rep
sc s ev
i u
te
D g
r rna
u se te
A ea al
l
P an
as
Ko
Ao
8.0
Ao=5.1mm
Bo=4.6mm
Ko=1.6mm
Bo
5.50
4.5
4.5
12.0
+/-0.3
Parts packaged on 13" Diameter reel,
4,150 parts per reel.
SECTION A-A
Direction of feed
Core loss
Irms DERATING WITH CORE LOSS
% of Losses from Irms (maximum)
% of Applied Volt-µsecond
Inductance characteristics
OCL vs Isat
SD3812
OCL vs Isat
SD3814
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
OCL (%)
0
0
10
20
30
40
50
60
70
80
90
100
110
120
130
10 20 30 40 50 60 70 80 90 10 11 12 13 14 15 16
0 0 0 0 0 0 0
% of Isat
% of Isat
4
www.eaton.com/electronics
SD38
Low profile metalized shielded drum core power inductors
Technical Data
4318
Effective
October
2017
Solder Reflow Profile
T
P
Max. Ramp Up Rate = 3°C/s
Max. Ramp Down Rate = 6°C/s
T
L
t
P
T
C
-5°C
T
ab
l
e
1 -
S
t
a
n
da
r
d S
nP
b S
ol
de
r (T c)
Package
Thickness
<2.5mm
_
>2.5mm
Volume
mm
3
<350
235°C
220°C
Volume
mm
3
_
>350
220°C
220°C
d.
nd lete
) a ep
2
2 d
81 is 12-V
3
D ry 25
(S to PI
16 ven M
20 in
or
ly til
4,
u n
J u
1
ve or , SD
ti )
ec 14 -V2 t.
ff 8
, E D3 012 en
ed (S PI4 cem
nu 16 M
ti 0
la
on t 2 iew rep
sc s ev
i u
te
D g
r rna
u se te
A ea al
l
P an
as
Temperature
T
smax
Preheat
A
t
T
ab
l
e
2 - L
ead
(P
b
) Fr
ee S
ol
de
r (T c)
Package
Thickness
<1.6mm
1.6 – 2.5mm
>2.5mm
Volume
mm
3
<350
260°C
260°C
250°C
Volume
mm
3
350 - 2000
260°C
250°C
245°C
T
smin
t
s
Volume
mm
3
>2000
260°C
245°C
245°C
25°C
Time 25°C to Peak
Time
Reference JDEC J-STD-020
Profile Feature
Preheat
and Soak
• T
e
mperature min. (Tsmin)
Standard SnPb Solder
100°C
150°C
60-120 Seconds
Lead (Pb) Free Solder
150°C
200°C
60-120 Seconds
• Temperature max. (Tsmax)
• Time (Tsmin to Tsmax) (ts)
Average ramp up rate Tsmax to Tp
3°C/
Second
Max.
183°C
60-150 Seconds
Table 1
20
Seconds**
3°C/
Second
Max.
217°C
60-150 Seconds
T
able
2
30
Seconds**
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
6°C/ Second
Max.
6
Minutes Max.
6°C/ Second
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.
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 Compan . 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 inju y 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.
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