SDH3812 Series
Low Profile, High Power, Shielded Inductors
Description
? 125°C maximum total temperature operation
? 3.8mm x 3.8mm x 1.2mm shielded drum core
? High power density, compact footprint
? Inductance range from 0.47uH to 220uH
? Current range from 4.2 Amps to 0.16 Amps
? Ferrite shielded, low EMI
? Ferrite core material
Applications
? Buck or Boost inductor
? Noise filtering output filter chokes
? LED photo flash
? Handheld devices
? Notebook and battery power
? Cellular phones / PDA’s / GPS systems
? Digital cameras / MP3 players / IP phones
RoHS
2002/95/EC
Packaging
? Supplied in tape and reel packaging, 4150 per reel
Environmental Data
? Storage temperature range: -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
maximum
Part Number
Rated
Inductance
OCL (1)
μH ± 20%
Part
Marking
Irms (2)
Amperes
Isat (3)
Amperes
DCR
? @20°C
DCR
? @20°C
K-factor
(4)
(μH)
Designator
(Typical)
(Maximum)
SDH3812-R47-R
SDH3812-1R0-R
SDH3812-1R2-R
SDH3812-1R5-R
SDH3812-2R2-R
SDH3812-3R3-R
SDH3812-4R7-R
SDH3812-6R8-R
SDH3812-8R2-R
SDH3812-100-R
SDH3812-150-R
SDH3812-220-R
SDH3812-330-R
SDH3812-470-R
SDH3812-680-R
SDH3812-820-R
SDH3812-101-R
SDH3812-151-R
SDH3812-221-R
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
0.43
0.89
1.17
1.49
2.23
3.17
4.96
6.70
8.01
9.67
14.45
22.00
32.90
46.20
67.40
81.80
97.50
149.00
218.50
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
2.69
2.07
1.77
1.67
1.37
1.14
0.94
0.85
0.73
0.69
0.56
0.50
0.41
0.34
0.31
0.26
0.25
0.20
0.16
4.20
3.00
2.60
2.30
1.90
1.60
1.25
1.05
0.96
0.88
0.72
0.61
0.49
0.41
0.34
0.31
0.28
0.22
0.19
0.027
0.045
0.062
0.069
0.104
0.148
0.220
0.265
0.342
0.398
0.612
0.750
1.132
1.583
2.000
2.750
3.042
4.542
7.017
0.032
0.054
0.074
0.083
0.124
0.177
0.264
0.317
0.410
0.478
0.735
0.900
1.358
1.900
2.400
3.300
3.650
5.450
8.420
145.2
100.6
87.1
76.9
62.2
52.3
42.2
35.3
33.5
30.4
23.8
20.1
16.1
13.8
11.4
10.3
9.4
7.6
6.3
(1) Open Circuit Inductance Test Parameters: 100kHz, 0.1V, 0.0Adc.
(2) Irms: DC current for an approximate ? T of 40°C without core loss. Derating is
necessary for AC currents. PCB layout, trace thickness and width, air-flow, and
proximity of other heat generating components will affect the temperature rise. It
is recommended that the temperature of the part not exceed 125°C under worst
case operating conditions verified in the end application.
(3) Isat Amperes peak for 30% maximum rolloff (@25°C)
(4) K-factor: Used to determine B p-p for core loss (see graph).
B p-p = K*L* ? I, B p-p(mT), K: (K factor from table), L: (Inductance in uH),
? I (Peak to peak ripple current in Amps).
(5) Part Number Definition: SDH3812-xxx-R
SDH3812 = Product code and size; -xxx = Inductance value in uH;
R = decimal point; If no R is present, third character = # of zeros.
-R suffix = RoHS compliant
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