E & E Magnetic Products Limited
SHIELDED SURFACE MOUNT
POWER INDUCTOR
Power Beads Type
Available in low profile and used in high power application
Ideal for high current devices
Custom inductance value or tolerance is available
RoHS compliant version is available
E
LECTRICAL
S
PECIFICATION
@ 25
o
C
Part
Number
831-02976
831-02977
831-02978
831-03081
831-03082
831-03083
RoHS
Part Number
831-02976F
831-02977F
831-02978F
831-03081F
831-03082F
831-03083F
Inductance Inductance@Irated
(nH±20%)
(nH Typ)
72
105
150
72
105
150
72
102
134
72
102
134
2
Irated
(Adc)
31
31
24
31
31
24
3
DCR
(m
Ω
)
1
0.32
±9.4%
0.32
±9.4%
0.32
±9.4%
0.46
±6.5%
0.46
±6.5%
0.46
±6.5%
Saturation Current
(Adc)
o
25 C
100
o
C
45
58
46
30
58
46
30
38
24
45
38
24
4
Heating Current
(A)
31
31
31
31
31
31
5
Marking
2976
2977
2978
3081
3082
3083
Notes:
1. The DCR is measured from point a to point b, as shown on the mechanical drawing.
2. Inductance is tested at 0.1Vrms, 1MHz.
3. The rated current as listed is either the saturation current or the heating current depending on which value is lower.
4. The saturation current, Isat, is the current at which the inductance of the component drops by 20% typical at the stated
ambient temperatures (25ºC and 100ºC).
5. The heating current is the DC current required to raise the component temperature by approximately 40ºC at ambient
temperature of 25ºC. This current is determined by soldering the component on a typical application PCB, and then
applying the current to the device for 30 minutes without any forced air cooling.
6. Operating temperature range: -40ºC to +130ºC. The part temperature (ambient temperature + temperature rise)
should not exceed the upper limit of the operating temperature under worst case operating conditions. Circuit
design, component placement, PWB trace size and thickness, airflow and other cooling provisions all affect the
part temperature. Part temperatures should be verified in the end application.
trace size and thickness, airflow and other cooling provisions
(852) 2765 3888
Fax: (852) 2954 3304
2/F Block A, 94 Tokwawan Road, Kowloon, Hong Kong Tel:
all affect the part temperature. Part
1
PI141(01)
Revised in 02/08
E & E Magnetic Products Limited
SHIELDED SURFACE MOUNT
POWER INDUCTOR
Power Beads Type
S
CHEMATICS
M
ECHANICAL
D
IMENSIONS
.276 Max
7.00
5
.120
3.05
.080
2.03
.130
3.30
.276
7.00 Max
EE
XXXX
(DATE)
Recommend
Pad Layout
.195 Max
4.96
Reference or
Gauge Plane
2X
.060
Typ
1.52
b
a
1
.098
Typ
2.49
Notes:
inches
7. All dimensions are specified in mm with higher precedence in mm.
8. Unless otherwise specified, all tolerances are ± .010 .
0.25
9. For available RoHS part number, the part will be marked with “XXXXF”, instead of “XXXX”.
Weight (in gram)
Tape & Reel
:
:
1.0 typ.
950 / reel
S
CHEMATICS
1
2
FOR MORE INFORMATION, PLEASE CONTACT
HEADQUARTER
2/F Block A, Merit Industrial Centre,
94 Tokwawan Road, Kowloon,
Hong Kong
Tel: (852) 2765 3888
Fax: (852) 2954 3304
Email: eempl@eleceltek.com
Website: http://www.eleceltek.com
Information herein is for reference only and subject to change without notice. It does not constitute any representation, warranty or commitment of the company in respect
of the products in any aspect. All logos, brands and product names mentioned herein are trademarks or registered trademarks of their respective owners. The company
does not assume any liability arising out of the application or use of any product or circuit described herein. Copyrights 2006, E & E Magnetic Products Limited.
2/F Block A, 94 Tokwawan Road, Kowloon, Hong Kong
2
Tel: (852) 2765 3888
Fax: (852) 2954 3304
PI141(01)
Revised in 02/08
嵌入式系统
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