Applications
• Server/notebook power
• High power LED driver, portable devices
• Base station, telecom, and networking
• Battery chargers, RAM power supply
• Industrial and automotive power systems
• Noise filtering output filter chokes
• Buck/boost converters, output converters
Environmental Data
• Storage temperature range: -40°C to +125°C
• Operating temperature range: -40°C to +125°C
(ambient plus self temperature rise)
• Solder reflow temperature: J-STD-020D compliant
Packaging
• Supplied in tape and reel packaging, 750 parts per 13 inch dia. reel
HALOGEN
HF
FREE Pb
Description
• Halogen free, lead free
• 125°C maximum total temperature operation
• Low-profile surface mount inductor
• 9.5 x 8.3 x 4.5mm shielded drum core
• Ferrite core material
• Inductance range from 1.5µH to 100µH
• Current range from 0.8 Amps to 9.1 Amps
• Frequency range up to 1MHz
• RoHS Compliant
Shielded Power Inductors
SD8350 Series
0911 BU-SB111111 Page 1 of 4 Data Sheet: PM-4146
SMD Device
Product Specifications
Rated OCL1Irms2Isat3DCR mΩDCR mΩ
Part Number Inductance (µH) µH±30% (Amps) (Amps) @ 20°C Typical @ 20°C Maximum K-factor4
SD8350-1R8-R 1.8 1.5 5.50 9.1 11.8 14.0 16.0
SD8350-3R9-R 3.9 3.2 4.50 6.3 16.2 19.0 9.6
SD8350-4R7-R 4.7 4.2 4.10 5.5 18.5 22.0 8.5
SD8350-6R8-R 6.8 6.8 3.90 4.4 20.8 25.0 7.6
SD8350-100-R 10 9.9 3.20 4.0 31.4 36.0 6.3
SD8350-150-R 15 13.6 2.30 2.9 45.0 53.0 5.3
SD8350-220-R 22 20.4 1.80 2.6 63.5 75.0 4.4
SD8350-330-R 33 31.4 1.40 2.2 111.4 125.0 3.5
SD8350-470-R 47 44.9 1.30 1.8 130.0 150.0 2.9
SD8350-680-R 68 65.1 1.00 1.5 200.8 240.0 2.4
SD8350-101-R 100 99.7 0.80 1.3 308.0 360.0 2.0
1. Open Circuit Inductance Test Parameters: 100kHz, 0.1V, 0.0Adc.
2. Irms: DC current for an approximate ΔT 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 Amps peak for approximately 35% rolloff (@25°C)
4. K-factor: Used to determine Bp-p for core loss (see graph).
Bp-p = K*L*ΔI, Bp-p (mT), K: (K factor from table), L: (Inductance in µH),
ΔI (Peak to peak ripple current in Amps).
5. Part Number Definition: SD8350-xxx-R
SD8350 = Product code and size; -xxx = Inductance value in µH;
R = decimal point; If no R is present, third character = # of zeros.
-R suffix = RoHS compliant
RECOMMENDED PCB LAYOUT SCHEMATIC
1
2
9.5 max.
8.3 max.
4.5 max.
2.5
1.2
6.3
XXX
wwlly R
TOP VIEW FRONT VIEW
BOTTOM VIEW
5.7
2.9
1.8
1
2
LEFT VIEW
DDiimmeennssiioonnss -- mmmm
0
20
40
60
80
100
120
140
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
Temperature Rise (°C)
Total Loss (W)
Part Marking: Coiltronics logo xxx = Inductance value in μH. (R = Decimal point). If no R is present, third character = number of zeros wwlly - or - wwllyy = Date code R = Revision level
Supplied in tape-and-reel packaging, 750 parts per reel, 13” diameter reel.
Packaging Information - mm
Temperature Rise vs.Total Loss
0911 BU-SB111111 Page 2 of 4 Data Sheet: PM-4146
0911 BU-SB111111 Page 3 of 4 Data Sheet: PM-4146
1MHz 500kHz 300kHz
200kHz
100kHz
0.0001
0. 00 1
0. 01
0. 1
1
10
1 10 100 100 0
Bp-p (mT)
Core Loss (W)
OCL Vs. Isat
0%
20%
40%
60%
80%
100%
120%
0% 20% 40% 60% 80% 100% 120% 140%
% Is at
% OCL
+85 Deg. C
+25 Deg. C
-40 Deg. C
Inductance Characteristics
Core Loss
0911 BU-SB111111 Page 4 of 4 Data Sheet: PM-4146
The only controlled copy of this Data Sheet is the electronic read-only version located on the Cooper Bussmann Network Drive. All other copies of this document are by definition uncon-
trolled. This bulletin is intended to clearly present comprehensive product data and provide technical information that will help the end user with design applications. Cooper Bussmann
reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Cooper Bussmann 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 Bussmann 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 label-
ing, can be reasonably expected to result in significant injury to the user.
North America
Cooper Electronic Technologies
1225 Broken Sound Parkway NW
Suite F
Boca Raton, FL 33487-3533
Tel: 1-561-998-4100
Fax: 1-561-241-6640
Toll Free: 1-888-414-2645
Cooper Bussmann
P.O. Box 14460
St. Louis, MO 63178-4460
Tel: 1-636-394-2877
Fax: 1-636-527-1607
Europe
Cooper Electronic Technologies
Cooper (UK) Limited
Burton-on-the-Wolds
Leicestershire • LE12 5TH UK
Tel: +44 (0) 1509 882 737
Fax: +44 (0) 1509 882 786
Cooper Electronic Technologies
Avda. Santa Eulalia, 290
08223
Terrassa, (Barcelona), Spain
Tel: +34 937 362 812
+34 937 362 813
Fax: +34 937 362 719
Asia Pacific
Cooper Electronic Technologies
1 Jalan Kilang Timor
#06-01 Pacific Tech Centre
Singapore 159303
Tel: +65 278 6151
Fax: +65 270 4160
Solder Reflow Profile
Temperature
t
tP
ts
TC -5°C
Time 25°C to Peak Time
25°C
Tsmin
Tsmax
TL
TP
Preheat
A
Max. Ramp Up Rate = 3°C/s
Max. Ramp Down Rate = 6°C/s
T
T
a
a
b
b
l
l
e
e
1
1
-
-
S
S
t
t
a
a
n
n
d
d
a
a
r
r
d
d
S
S
n
n
P
P
b
b
S
S
o
o
l
l
d
d
e
e
r
r
(
(
T
T
c
c
)
)
Volume Volume
Package mm3mm3
Thickness <350 >
_350
<2.5mm 235°C220°C
>
_2.5mm 220°C220°C
T
T
a
a
b
b
l
l
e
e
2
2
-
-
L
L
e
e
a
a
d
d
(
(
P
P
b
b
)
)
F
F
r
r
e
e
e
e
S
S
o
o
l
l
d
d
e
e
r
r
(
(
T
T
c
c
)
)
Volume Volume Volume
Package mm3mm3mm3
Thickness <350 350 - 2000 >2000
<1.6mm 260°C260°C260°C
1.6 – 2.5mm 260°C250°C245°C
>2.5mm 250°C245°C245°C
Reference JDEC J-STD-020D
Profile Feature Standard SnPb Solder Lead (Pb) Free Solder
Preheat and Soak• Temperature min. (Tsmin) 100°C150°C
• Temperature max. (Tsmax) 150°C200°C
• Time (Tsmin to Tsmax) (ts)60-120 Seconds60-120 Seconds
A
verage ramp up rate Tsmaxto Tp3°C/ Second Max. 3°C/ Second Max.
Liquidous temperature (T
L
) 183°C217°C
Time at liquidous (tL)60-150 Seconds60-150 Seconds
Peak package body temperature (TP)*Table 1Table 2
Time (tp)** within 5 °C of the specified classification temperature (Tc) 20 Seconds** 30 Seconds**
A
verage ramp-down rate (Tpto Tsmax)6°C/ Second Max. 6°C/ Second Max.
Time 25°C to Peak Temperature6 Minutes 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.
© 2011 Cooper Bussmann
www.cooperbussmann.com
