Data and signal line chokes
Common-mode chokes, ring core
42 V AC / 80 V DC, 0.2 … 6 mH, 100 mA, +60 °C
Series/Type:
Date:
B82791G14
October 2008, October 2011
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EPCOS
AG 2011. Reproduction, publication and dissemination of this publication, enclosures
hereto and the information contained therein without EPCOS’ prior express consent is prohibited.
Data and signal line chokes
Common-mode chokes, ring core
Rated voltage 42 V AC/ 80 V DC
Rated inductance 0.2 mH to 6 mH
Rated current 100 mA
Construction
■
Current-compensated ring core quad choke
■
Ferrite core
■
Polycarbonate case (UL 94 V-0)
B82791G14
Features
■
■
■
■
Without potting
Suitable for automatic insertion
Suitable for wave soldering
RoHS-compatible
Applications
Suppression of asymmetrical interference coupled in
on data lines, already effective at 10 kHz, e.g. in:
■
Telephone lines (analog, ISDN)
■
Interfaces with balance-to-ground data transmission
Terminals
■
Base material CuNi18Zn20
■
Layer composition Ni, Sn
■
Hot-dipped
Marking
Manufacturer, ordering code, rated voltage,
rated inductance, rated current, graphic symbol,
date of manufacture (MMYY)
Packing
Cardboard box
Please read
Cautions and warnings
and
Important notes
at the end of this document.
2
06/11
Data and signal line chokes
Common-mode chokes, ring core
Dimensional drawing and pin configuration
ø0.6
8
1
2
B82791G14
8
7
6
5
1
2
3
4
17.5 max.
7.5±0.1
7
15±0.1
6
5
4
3
2.8+0.5
8 max.
10±0.2
15±0.1
17.5 max.
Tolerances to ISO 2768-M
unless otherwise noted.
Dimensions in mm.
IND0220-Z
Technical data and measuring conditions
Rated voltage V
R
Rated temperature T
R
Rated current I
R
Rated inductance L
R
42 V AC (50/60 Hz) / 80 V DC
+60 °C
Referred to 50 Hz and rated temperature
Measured with Agilent 4284A at 0.1 mA, 20 °C
Measuring frequency: L
R
1 mH = 100 kHz
L
R
> 1 mH = 10 kHz
Inductance is specified per winding.
30%
at +20 °C
< 10% at DC magnetic bias with I
R
, +20 °C
Measured with Agilent 4284A at 5 mA, +20 °C, typical valu-
es
Measuring frequency: L
R
1 mH = 100 kHz
L
R
> 1 mH = 10 kHz
Measured at +20
C,
typical values
Sn96.5Ag3.0Cu0.5: (+245
5)
°C, (3
0.3)
s
Wetting of soldering area
95%
(to IEC 60068-2-20, test Ta)
(+260
5)
°C, (10
1)
s
(to IEC 60068-2-20, test Tb)
40/125/56 (to IEC 60068-1)
–25 °C … +40 °C,
75%
RH
Approx. 4 g
Inductance tolerance
Inductance decrease
L/L
0
Stray inductance L
stray,typ
DC resistance R
typ
Solderability (lead-free)
Resistance to soldering heat
(wave soldering)
Climatic category
Storage conditions (packaged)
Weight
Please read
Cautions and warnings
and
Important notes
at the end of this document.
3
06/11
Data and signal line chokes
Common-mode chokes, ring core
Characteristics and ordering codes
L
R
mH
0.2
4.7
6
L
stray,typ
nH
150
500
800
I
R1)
mA
100
100
100
R
typ
m
300
850
1200
V
test
V DC, 2 s
750
750
750
Ordering code
B82791G14
B82791G0014A017
B82791G0014A016
B82791G0014A012
Impedance |Z| versus frequency f
measured with windings in parallel at 20 °C,
typical values
10
6
Ω
B82791
| Z|
10
5
IND0221-C
Current derating I
op
/I
R
versus ambient temperature
IND0681-C-E
1.4
I
op
I
R
1.2
1.0
10
4
T
R
= 60
˚
C
0.8
0.6
0.4
10
3
10
2
G0014A012
G0014A016
G0014A017
0.2
0
10
1 4
10
10
5
10
6
Hz 10
7
f
0
20
40
60
80 100
˚
C
140
T
A
1) Types with higher rated current on request.
Please read
Cautions and warnings
and
Important notes
at the end of this document.
4
06/11
Cautions and warnings
Current-compensated ring core double chokes
■
Please note the recommendations in our Inductors data book (latest edition) and in the data
sheets.
– Particular attention should be paid to the derating curves given there. Derating must be applied
in the case the ambient temperature in application exceeds the rated temperature of the
component.
– Ensure the operation temperature of the component in application, which is the sum of the
ambient temperature and the temperature rise owing to losses (”self-heating”), not to exceed
the maximum value specified in the climatic category.
– The soldering conditions should also be observed. Temperatures quoted in relation to wave
soldering refer to the pin, not the housing.
■
If the components are to be washed varnished it is necessary to check whether the washing
varnish agent that is used has a negative effect on the wire insulation, any plastics that are used,
or on glued joints. In particular, it is possible for washing varnish agent residues to have a
negative effect in the long-term on wire insulation.
■
The following points must be observed if the components are potted in customer applications:
– Many potting materials shrink as they harden. They therefore exert a pressure on the plastic
housing or core. This pressure can have a deleterious effect on electrical properties, and in
extreme cases can damage the core or plastic housing mechanically.
– It is necessary to check whether the potting material used attacks or destroys the wire
insulation, plastics or glue.
– The effect of the potting material can change the high-frequency behaviour of the components.
■
Ferrites are sensitive to direct impact. This can cause the core material to flake, or lead to
breakage of the core.
■
Even for customer-specific products, conclusive validation of the component in the circuit can
only be carried out by the customer.
Please read
Cautions and warnings
and
Important notes
at the end of this document.
5
06/11
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