SMT power inductors
Size 12.5 x 12.5 x 8.5 mm
Series/Type:
Ordering code:
Date:
Version:
B82477D4
June 2013
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Identification/Classification 1
(header 1 + top left bar):
Identification/Classification 2
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Ordering code: (top right header bar)
Series/Type: (bottom right header bar)
Preliminary data (optional):
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Department:
MAG IN PD
B82477D4
SMT power inductors
Size 12.5 x 12.5 x 8.5 mm
EPCOS AG 2015. Reproduction, publication and dissemination of this publication, enclosures hereto and the information
Date:
June 2013
contained therein without EPCOS' prior express consent is prohibited.
Version:
02
EPCOS AG is a TDK Group Company.
SMT power inductors
Size 12.5 x 12.5 x 8.5 mm
B82477D4
Rated inductance 2 ... 100µH
Construction
■
Ferrite core
■
Magnetically shielded
■
Winding: enamel copper wire
■
Winding soldered to terminals
■
Special winding technology for low stray
inductance and high coupling factor
Features
■
High rated current, low DC resistance
■
Temperature range up to +150 °C
■
Suitable for lead-free reflow soldering
as referenced in JEDEC J-STD 020D
■
Qualified to AEC-Q200
■
RoHS-compatible
■
Coupling factor of typically 99% in average
Applications
■
Common mode choke
■
DC/DC converters, especially for SEPIC topology
■
1:1 transformer
Terminals
■
Base material CuSn6P
■
Layer composition Ni, Sn (lead-free)
■
Electro-plated
Marking
■
Marking on component:
Manufacturer, L value (in µH), Date code
■
Minimum data on reel:
Manufacturer, ordering code, L value,
quantity, date of packing
Delivery mode and packing unit
■
24-mm blister tape, wound on 330-mm
∅
reel
■
Packing unit: 350 pcs./reel
MAG IN PD
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 2 of 7
June 2013
SMT power inductors
Size 12.5 x 12.5 x 8.5 mm
B82477D4
Dimensional drawing and circuit diagram
(Dimensions in mm)
Taping and packing
Direction of unreeling
(Dimensions in mm)
A:330±2
MAG IN PD
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 3 of 7
N:75±1
W1:24.4 typ
W2:30.4 max
June 2013
SMT power inductors
Size 12.5 x 12.5 x 8.5 mm
B82477D4
Technical data and measuring conditions
Rated inductance L
1,
L
2
Leakage or stray inductance L
s
Coupling factor K
typ
Operating temperature range
Rated current I
R
Saturation current I
Sat
DC resistance R
1
,R
2 ,
(max)
Solderability (lead-free)
Resistance to soldering heat
Climatic category
Storage conditions
Weight
Measured with LCR meter Agilent 4284A at frequency f
L
,
0.1 V, +20 °C.
Test L
1-3
:(short 2+4) .Measured with LCR meter Agilent 4284A
at 100khz, 0.1 V, +20 °C.
Coupling in between the 2 windings.
k
½
1
–55°C to +150 °C
Max. permissible DC with temperature increase of
≤40
K
DC with inductance decrease
∆L/L
0
of approx. 10%
Measured at +20 °C
Dip and look method Sn95.5Ag3.8Cu0.7:
+(245
5)
°C, (3
0.3)
s
Wetting of soldering area
90%
(based on IEC 60068-2-58)
+260 °C, 40 s (as referenced in JEDEC J-STD-020D)
55/150/56 (to IEC 60068-1)
Mounted: –55 °C … +150 °C
Packaged: –25 °C … +40 °C,
≤75%
RH
Approx. 4.2 g
Ls
Ln
MAG IN PD
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 4 of 7
June 2013
SMT power inductors
Size 12.5 x 12.5 x 8.5 mm
B82477D4
Characteristics and ordering codes
L
1,
L
2
µH
L
s,typ
K
,typ
uH
%
Tolerance
f
L
I
sat,typ
I
sat,min
A
13
10.25
8.75
7.25
5.75
4.80
4.00
3.30
3.10
2.30
2.00
I
R
A
5.75
5.50
5.00
4.15
3.75
3.25
2.80
2.30
1.85
1.55
1.35
R
1,
R
2
/mΩ
max
20
22
26
35
42
60
78
110
145
215
280
typ
16.5
18.1
23.2
28.5
35.5
52.5
69.5
96.4
115
190
267
Ordering code
B82477D4202M000
B82477D4302M000
B82477D4472M000
B82477D4682M000
B82477D4103M000
B82477D4153M000
B82477D4223M000
B82477D4333M000
B82477D4473M000
B82477D4683M000
B82477D4104M000
2.0 0.20 94.9
3.0 0.25 95.7
4.7 0.25 97.3
6.8 0.25 98.1
10
15
22
33
47
68
100
0.25 98.7
0.30 99.0 ±20%
≙
M
0.30 99.3
0.35 99.5
0.45 99.5
0.50 99.6
0.60 99.7
MHz A
15
12
10
8.25
6.50
0.1
5.50
4.50
3.80
3.30
2.50
2.20
Inductance is per winding. When leads are connected in parallel, inductance is the same value. When leads are
connected in series, inductance is four times the value.
DCR is for each winding. When leads are connected in parallel, DCR is half the value. When leads are
connected in series, DCR is twice the value.
Isat ist the current flowing through one winding. When leads are connected in parallel, Isat is the same. When
leads are connected in series, Isat is half the value.
I
R
is the total current through both windings
I
1
and I
2
can be calculated like this: I
12
+I
22
=I
R2
Current derating I
op
/I
R
versus ambient temperature T
A
MAG IN PD
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 5 of 7
June 2013
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