SMT Power Inductors
ERU 20, helically wound
Series/Type:
Ordering code:
Date:
B82559*A020
June 2012
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Identification/Classification 1
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Identification/Classification 2
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Ordering code: (top right header bar)
Series/Type: (bottom right header bar)
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Date:
June 2012
B82559*A020
SMT Power Inductors
ERU 20, helically wound
EPCOS AG 2012. Reproduction, publication and dissemination of this publication, enclosures hereto and the information
contained therein without EPCOS' prior express consent is prohibited.
SMT Power Inductors
ERU 20, helically wound
B82559*A020
Rated inductance 1 … 35 µH
Saturation current 9.3 … 50.0 A
Construction
High temperature ferrite core
Magnetically shielded
Helical winding
Self-leaded construction under body termination
High rated current
Extremely low DC resistance
Very low profile and smallest possible footprint
RoHS-compatible
Easily customized
Suitable for pick-and-place processes
Features
Applications
Energy storage chokes for
DC/DC converters
VRM modules
POL converters
Solar converters
Terminals
Lead-free tinned
Marking
Manufacturer, ordering code, inductance
manufacturing date, coded (yyww)
Delivery mode and packing units
Blister tape
Reel
June 2012
Please read Cautions and warnings and
Important notes at the end of this document.
Page 2 of 10
SMT Power Inductors
ERU 20, helically wound
B82559*A020
Dimensional Drawing and layout recommendation
June 2012
Please read Cautions and warnings and
Important notes at the end of this document.
Page 3 of 10
SMT Power Inductors
ERU 20, helically wound
B82559*A020
Taping and packing
Blister tape:
Reel:
Dimensions in mm
Height (mm)
Component (h)
9.8
10.8
12.2
13.2
14.2
Packaging unit (pcs.)
Blister tape (H) Per reel
10.8
150
12.5
130
13.9
115
14.9
110
15.9
100
June 2012
Please read Cautions and warnings and
Important notes at the end of this document.
Page 4 of 10
SMT Power Inductors
ERU 20, helically wound
B82559*A020
Technical data and measuring conditions
Inductance L
Inductance tolerance
Saturation current I [L
IDC
]
Rated inductance L
IDC
DC resistance R
DC
(max)
Self-resonant frequency
Solderability
Measured with Wayne-Kerr 3260/3265 at 0.1 V, +25 °C, 100 kHz
Current that will result in approx. 10-15 % drop in inductance values
The minimum allowable inductance at the saturation current I[L
IDC
]
Measured at +25 °C, toleranced resistances upon request
> 2 MHz
+235 °C, 5 s
Wetting of soldering area
90%
(based on IEC 60068-2-58, solder bath method)
To JEDEC J-STD 020D
–40 °C … +150 °C
Resistance to soldering heat
Operating temperature
Storage conditions (packaged) –25 °C … +40 °C,
≤75%
RH
Characteristics and ordering codes
L
H
1.0
1.5
2.2
3.3
4.7
6.8
10.0
15.0
20.0
29.0
35.0
L
at I
sat
H
0.75
1.10
1.60
2.50
3.50
5.10
7.50
11.2
14.9
21.5
26.0
I
sat
A
50.0
50.0
43.0
34.0
22.0
19.0
18.3
15.3
14.3
11.0
9.3
0.62
0.9
1.2
1.5
2.6
2.9
3.9
4.9
6.4
7.0
7.0
0.55
0.78
1.0
1.28
2.15
2.68
3.74
4.65
6.0
6.65
6.65
R
DC
(max) R
DC
(typ)
mΩ
mΩ
Height h (max.) Approx.
mm
weight
g
9.8
10.8
12.2
13.2
9.8
9.8
10.8
12.2
14.2
14.2
14.2
15.7
17.6
19.8
22.5
15.7
16.3
18.1
19.7
22.5
23.9
23.9
Ordering code
B82559A2102A020
B82559A3152A020
B82559A4222A020
B82559A5332A020
B82559A4472A020
B82559A5682A020
B82559A7103A020
B82559A9153A020
B82559A0203A020
B82559A0293A020
B82559A0353A020
June 2012
Please read Cautions and warnings and
Important notes at the end of this document.
Page 5 of 10
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