Description
•3.8mm x 3.8mm shielded drum cores available
in two heights: 1.2mm and 1.4mm
•Current range from 4.44 to 0.100 Amps
•Inductance range from 0.47 uH to 680 uH
•Ferrite shielded, low EMI
•Ferrite core material
Applications
•Digital cameras, cellular phones, CD players, and PDAs
•PCMCIA cards
•GPS systems
Environmental Data
•Storage temperature range: -40°C to +125°C
•Operating ambient temperature range: -40°C to +85°C
(range is application specific). Temperature rise is
approximately 40°C at rated rms current
•Solder reflow temperature: +260°C max for 10 seconds
max.
Packaging
•Supplied in tape and reel packaging,
4,150 parts per 13" reel
SD38 Series
Low Profile, Shielded Inductors
(1) Test Parameters: 100KHz, 0.100Vrms, 0.0Adc.
(2) RMS current for an approximate ∆Tof40°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 100kHz 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.
Part Number Rated OCL (1) Part Irms (2) Isat (3) DCR (4) Volt (5)
Inductance +/-15% Marking Amperes Amperes (Ω) u-sec
(µH) (µH) Designator Typ. Typ.
SD3812-R47-R 0.47 0.405 A 2.53 3.89 0.030 2.52
SD3812-1R0-R 1.0 0.845 B 2.00 2.69 0.048 3.64
SD3812-1R2-R 1.2 1.125 C 1.71 2.33 0.066 4.20
SD3812-1R5-R 1.5 1.445 D 1.58 2.06 0.078 4.76
SD3812-2R2-R 2.2 2.205 E 1.32 1.67 0.111 5.88
SD3812-3R3-R 3.3 3.125 F 1.10 1.40 0.159 7.0
SD3812-4R7-R 4.7 4.805 G 0.87 1.13 0.256 8.7
SD3812-6R8-R 6.8 6.845 H 0.80 0.95 0.299 10.4
SD3812-8R2-R 8.2 8.405 I 0.690 0.854 0.406 11.5
SD3812-100-R 10.0 10.125 J 0.662 0.778 0.441 12.6
SD3812-150-R 15.0 15.125 K 0.539 0.636 0.665 15.4
SD3812-220-R 22.0 21.125 L 0.499 0.538 0.776 18.2
SD3812-330-R 33.0 32.805 M 0.399 0.432 1.212 22.7
SD3812-470-R 47.0 47.045 N 0.327 0.361 1.809 27.2
SD3812-680-R 68.0 68.445 O0.269 0.299 2.666 32.8
SD3812-820-R 82.0 80.645 P 0.259 0.276 2.885 36
SD3812-101-R 100.0 99.405 Q 0.217 0.248 4.099 39
SD3812-151-R 150.0 149.645 R 0.178 0.202 6.130 48
SD3812-221-R 220.0 218.405 S0.160 0.167 7.585 59
SD3814-R47-R 0.47 0.360 A 2.81 4.44 0.020 2.16
SD3814-R82-R 0.82 0.752 B 2.18 3.08 0.033 3.12
SD3814-1R2-R 1.2 1.001 C 1.85 2.67 0.046 3.60
SD3814-1R5-R 1.5 1.286 D1.76 2.35 0.051 4.08
SD3814-2R2-R 2.2 1.962 E 1.43 1.90 0.077 5.04
SD3814-3R3-R 3.3 2.781 F 1.31 1.60 0.093 6.0
SD3814-4R7-R 4.7 4.276 G1.06 1.29 0.141 7.4
SD3814-6R8-R 6.8 6.768 H 0.87 1.03 0.207 9.4
SD3814-8R2-R 8.2 8.228 I 0.753 0.930 0.279 10.3
SD3814-100-R 10.0 9.830 J 0.713 0.851 0.311 11.3
SD3814-150-R 15.0 14.458 K0.574 0.702 0.481 13.7
SD3814-220-R 22.0 21.186 L 0.519 0.580 0.589 16.6
SD3814-330-R 33.0 32.151 M 0.418 0.471 0.908 20.4
SD3814-470-R 47.0 47.210 N0.346 0.388 1.322 24.7
SD3814-680-R 68.0 67.324 O 0.285 0.325 1.951 29.5
RoHS
2002/95/EC
(1) Test Parameters: 100KHz, 0.100Vrms, 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.
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 100kHz 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.
Part Number Rated OCL (1) Part Irms (2) Isat (3) DCR (4) Volt (5)
Inductance +/-15% Marking Amperes Amperes (Ω) u-sec
(µH) (µH) Designator Typ. Typ.
SD3814-820-R 82.0 81.101 P 0.270 0.296 2.174 32
SD3814-101-R 100.0 98.794 Q 0.228 0.268 3.048 36
SD3814-151-R 150.0 149.026 R 0.191 0.219 4.359 44
SD3814-221-R 220.0 217.342 S 0.170 0.181 5.480 53
SD3814-331-R 330.0 326.812 T 0.136 0.148 8.59 65
SD3814-471-R 470.0 470.031 U 0.111 0.123 12.85 78
SD3814-681-R 680.0 680.320 V 0.100 0.102 15.78 94
SD38 Series
Low Profile, Shielded Inductors
Mechanical Diagrams
TOP VIEW SIDE VIEW
BOTTOM VIEW
RECOMMENDED PCB LAYOUT SCHEMATIC
1.2
max
1.25
±0.12
5.0
1.0
2plcs
2.5
2plcs
4.0 typ
4.0
max
4.0
max
Pin #1 indicator
Marking
(see note A)
2.03
±.0 2
0.09 max
noplating
4.8
MAX
3.65
typ
0.
415 min
SD3812 Series
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.
TOP VIEW SIDE VIEW BOTTOM VIEW
RECOMMENDED PCB LAYOUT
SCHEMATIC
1.4
max
1.25
±0.12
2.5
2plcs
1.0
2plcs
4.0 typ
5.0
4.0
max
4.0
max
Pin #1 indicator
Marking
(see note A)
2.03
±.02
0.09 max
no plating
4.8
MA X
3.65
typ
0.415 min
SD3814 Series
Note A: 3digit marking. First digit indicates inductance value per chartabove.
Second digit indicates bi-weekly date code.
Third digit of year produced. Box indicates SD3814 part.
SD38 Series
Low Profile, Shielded Inductors
Packaging Information
Ko
1.5 Dia
min.
Bo
8.0
4.00
2.00 ±0.05 1.5 Dia.
+0.1/-0.0
1.75
5.50
12.0
+/-0.3
Ao
4.5 4.5
SECTION A-A Direction of feed
SD3812/SD3814 Series
Ao=5.1mm
Bo=4.6mm
Ko=1.6mm
Parts packaged on 13" Diameter reel,
4,150 parts per reel.
Inductance Characteristics
OCL vs Isat
SD3812
0
10
20
30
40
50
60
70
80
90
100
0 10 20 30 40 50 60 70 80 90 100 110 120 130
%of Isat
OCL (%)
OCL vs Isat
SD3814
0
10
20
30
40
50
60
70
80
90
100
0 10 20 30 40 50 60 70 80 90 10
0
11
0
12
0
13
0
14
0
15
0
16
0
%of Isat
OCL (%)
Core Loss
Irms DERATING WITH CORE LOSS
% of Applied Volt-µSecond
% of Losses from Irms (maximum)
Visit us on the Web at www.cooperbussmann.com
1225 Broken Sound Pkwy. Suite F Boca Raton, FL 33487
Tel: +1-561-998-4100 Toll Free: +1-888-414-2645 Fax: +1-561-241-6640
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 injuryto the user.
PM-4318 3/07
© Cooper Electronic
Technologies 2007
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Eaton:
SD3812-R47-R SD3812-1R0-R SD3812-1R2-R SD3812-1R5-R SD3812-100-R SD3812-101-R SD3812-150-R
SD3812-151-R SD3812-2R2-R SD3812-220-R SD3812-221-R SD3812-3R3-R SD3812-330-R SD3812-4R7-R
SD3812-470-R SD3812-6R8-R SD3812-680-R SD3812-8R2-R SD3812-820-R
