Ferrites and accessories
EPX 7/9
Core and accessories
Series/Type:
Date:
B65857A, B65858
June 2013
Data Sheet
EPCOS AG 2013. Reproduction, publication and dissemination of this data sheet and the
information contained therein without EPCOS’ prior express consent is prohibited.
EPX 7/9
Core
■
■
■
■
■
B65857A
For xDSL line transformer
Foot print of EP7
Height of EP13
Optimized design for low distortion
Delivery mode: sets
Magnetic characteristics
(per set)
l/A
l
e
A
e
A
min
V
e
= 0.91 mm
–1
= 15.7 mm
= 17.2 mm
2
= 13.9 mm
2
= 270 mm
3
Approx. weight
2.8 g/set
Gapped
Material
A
L
value
nH
63
3%
100
3%
160
4%
200
4%
250
5%
315
6%
400
7%
63
3%
100
3%
160
4%
200
4%
250
5%
315
6%
400
7%
63
3%
100
3%
160
4%
200
4%
250
5%
315
6%
400
7%
s
approx.
mm
0.35
0.22
0.14
0.11
0.09
0.06
0.05
0.35
0.22
0.14
0.11
0.09
0.06
0.05
0.35
0.22
0.14
0.11
0.09
0.06
0.05
e
Ordering code
T38
46
73
116
145
182
229
291
46
73
116
145
182
229
291
46
73
116
145
182
229
291
B65857A0063A038
B65857A0100A038
B65857A0160B038
B65857A0200B038
B65857A0250J038
B65857A0315C038
B65857A0400E038
B65857A0063A057
B65857A0100A057
B65857A0160B057
B65857A0200B057
B65857A0250J057
B65857A0315C057
B65857A0400E057
B65857A0063A066
B65857A0100A066
B65857A0160B066
B65857A0200B066
B65857A0250J066
B65857A0315C066
B65857A0400E066
T57
T66
Please read
Cautions and warnings
and
Important notes
at the end of this document.
2
06/13
EPX 7/9
Core
Gapped
Material
A
L
value
nH
63
3%
100
3%
160
4%
200
4%
250
5%
315
6%
400
7%
s
approx.
mm
0.35
0.22
0.14
0.11
0.09
0.06
0.05
e
Ordering code
B65857A
N45
46
73
116
145
182
229
291
B65857A0063A045
B65857A0100A045
B65857A0160B045
B65857A0200B045
B65857A0250J045
B65857A0315C045
B65857A0400E045
Ungapped
Material
N45
T57
T38
T66
A
L
value
nH
2500 +30/–20%
2600 +30/–20%
9000 +40/–30%
10500 +40/–30%
e
1820
1890
6540
7630
Ordering code
B65857A0000R045
B65857A0000R057
B65857A0000Y038
B65857A0000Y066
Please read
Cautions and warnings
and
Important notes
at the end of this document.
3
06/13
EPX 7/9
Accessories
SMD coil former with gullwing terminals
GFR liquid crystal polymer (UL 94 V-0, insulation class to IEC 60085:
F max. operating temperature 155 °C), color code black
Zenite 7130
®
E344082 (M)
, TICONA
Solderability: to IEC 60068-2-58, test Td, method 6 (Group 3): 245 °C, 3 s
Resistance to soldering heat: to IEC 60068-2-58, test Td, method 6 (Group 3): 255 °C, 10 s
permissible soldering temperature for wire-wrap connection on coil former: 400 °C, 1 s
Winding:
see Data Book 2013, chapter “Processing notes, 2.1”
Sections
1
A
N
mm
2
4.1
l
N
mm
22.9
A
R
value
191.8
Terminals
8
Ordering code
B65858A1008T001
Material:
B65858
Please read
Cautions and warnings
and
Important notes
at the end of this document.
4
06/13
Ferrites and accessories
Cautions and warnings
Cautions and warnings
Mechanical stress and mounting
Ferrite cores have to meet mechanical requirements during assembling and for a growing number
of applications. Since ferrites are ceramic materials one has to be aware of the special behavior
under mechanical load.
As valid for any ceramic material, ferrite cores are brittle and sensitive to any shock, fast changing
or tensile load. Especially high cooling rates under ultrasonic cleaning and high static or cyclic loads
can cause cracks or failure of the ferrite cores.
For detailed information see chapter
“Definitions”,
section 8.1.
Effects of core combination on A
L
value
Stresses in the core affect not only the mechanical but also the magnetic properties. It is apparent
that the initial permeability is dependent on the stress state of the core. The higher the stresses are
in the core, the lower is the value for the initial permeability. Thus the embedding medium should
have the greatest possible elasticity.
For detailed information see chapter
“Definitions”,
section 8.2.
Heating up
Ferrites can run hot during operation at higher flux densities and higher frequencies.
NiZn-materials
The magnetic properties of NiZn-materials can change irreversible in high magnetic fields.
Processing notes
– The start of the winding process should be soft. Else the flanges may be destroid.
– To strong winding forces may blast the flanges or squeeze the tube that the cores can no more
be mount.
– To long soldering time at high temperature (>300 °C) may effect coplanarity or pin arrangement.
– Not following the processing notes for soldering of the J-leg terminals may cause solderability
problems at the transformer because of pollution with Sn oxyd of the tin bath or burned insulation
of the wire. For detailed information see chapter
“Processing notes”,
section 8.2.
– The dimensions of the hole arrangement have fixed values and should be understood as
a recommendation for drilling the printed circuit board. For dimensioning the pins, the group
of holes can only be seen under certain conditions, as they fit into the given hole arrangement.
To avoid problems when mounting the transformer, the manufacturing tolerances for positioning
the customers’ drilling process must be considered by increasing the hole diameter.
5
06/13
