1
10/04
Chokes for data and signal lines
B82789*N
I core choke, EIA 1812
Rated voltage 42 VAC/80 VDC
Rated current 150 to 300 mA
Rated inductance 11 to 100
H
Construction
Current-compensated double choke with ferrite I core
Bifilar winding (B82789C0...)
Sector winding (B82789S0...)
Features
Suitable for reflow soldering
For gold-plated terminals conductive adhesion possible
Function
B82789C0:
Suppression of asymmetrical interference coupled in on lines,
whereas data signals up to some MHz can pass unaffectedly
B82789S0:
Suppression of asymmetrical (by L
R
) and symmetrical interference (by L
S
)
coupled in on lines. The high-frequency portions of the symmetrical data
signal are decreased so far that EMC problems can be significantly reduced
Applications
Automotive applications, e.g. CAN bus
Industrial automation
Telecommunications
Terminals
Two versions: Gold plated and lead-free tinned
Marking
Marking on component:
Manufacturer, bifilar or sector winding (coded), L value (in nH),
date of manufacture (coded)
Minimum data on reel:
Manufacturer, part number, ordering code, L value (in nH),
quantity, date of packing
Delivery mode
12-mm blister tape, reel packing (330-mm
reel), packing unit: 2500 pcs.
Taping to IEC 60286-3. For details on taping and packing refer to data book
"Chokes and Inductors", page 302.
2
10/04
Chokes for data and signal lines
I core choke, EIA 1812
B82789*N
Dimensional drawing
Layout recommendation
1) Soldering area
IND0303-W-E
1,20,1
1)
10,05
0,860,05
1)
3,2+0,3
3 max.
0,4 min.
1)
5,2 max.
4,50,2
Marking
0,03
IND0309-C
2,2
5,9
0,6
4,0
3
10/04
Chokes for data and signal lines
B82789*N
I core choke, EIA 1812
Technical data and measuring conditions
Characteristics and ordering codes
Rated voltage V
R
42 VAC (50/60 Hz)
80 VDC
Rated current I
R
Referred to 50 Hz and 85
C ambient temperature
Rated inductance L
R
Measured with HP 4284A at 100 kHz and 0.1 mA
Inductance tolerance
-30/+50%
Inductance decrease
L/L
0
<10% at DC magnetic bias with I
R
Stray inductance L
S
Measured with HP 4284A at 100 kHz and 5 mA
DC resistance R
max
Measured at 20
C ambient temperature
Solderability (IEC 60068-2-58)
(235 3) C, (2 0,3) s
Wetting of soldering area
95%
Climatic category (IEC 60068-1)
55/125/56 (55
C/+125 C/56 days damp heat test)
Weight
Approx. 0.16 g
L
R
L
S, typ
I
R
R
max
V
test
Ordering code
H
H
mA
m
VDC, 2 s gold-plated terminals tinned terminals
11
0.06
300
250
250
B82789C0113N001
B82789C0113N002
22
0.10
250
580
250
B82789C0223N001
B82789C0223N002
22
3.0
250
580
250
B82789S0223N001
B82789S0223N002
51
0.10
250
550
250
B82789C0513N001
B82789C0513N002
100
0.25
150
1500
250
B82789C0104N001
B82789C0104N002
4
10/04
Chokes for data and signal lines
I core choke, EIA 1812
B82789*N
Current derating I
op
/I
R
versus ambient temperature T
A
= 85 C
Insertion loss
e
(typical values at Z = 50
)
asymmetrical, all branches in parallel (common mode)
symmetrical (differential mode)
L
R
= 11
H
IND0038-R-E
0
0
op
R
0.2
0.4
0.6
0.8
1.0
1.2
20
40
60
80
100
C
140
A
T
IND0304-9
0
10
20
30
40
50
dB
f
B82789C0113N00*
10
10
10
10
6
7
10
8
10
Hz
9
5
4
5
10/04
Chokes for data and signal lines
B82789*N
I core choke, EIA 1812
Insertion loss
e
(typical values at Z = 50
)
asymmetrical, all branches in parallel (common mode)
symmetrical (differential mode)
L
R
= 22
H (bifilar winding)
L
R
= 51
H
L
R
= 22
H (sector winding)
L
R
= 100
H
IND0306-R
0
10
20
30
40
50
dB
f
B82789C0223N00*
10
10
6
10
10
7
Hz
8
10
10
9
5
4
IND0307-1
0
Hz
10
20
30
40
50
dB
10
f
B82789C0513N00*
10
6
10
7
10
8
10
9
10
5
4
IND0305-H
0
10
10
10
Hz
10
20
30
40
50
dB
8
7
6
10
10
9
f
5
B82789S0223N00*
IND0308-Z
0
10
20
30
40
50
dB
f
B82789C0104N00*
Hz
10
10
10
6
7
10
10
8
9
10
5
4
6
10/04
Chokes for data and signal lines
I core choke, EIA 1812
B82789*N
Published by EPCOS AG
Corporate Communications, P.O. Box 80 17 09, 81617 Munich, GERMANY
++49 89 636 09, FAX (0 89) 636-2 26 89
EPCOS AG 2004. Reproduction, publication and dissemination of this brochure and the informa-
tion contained therein without EPCOS' prior express consent is prohibited.
Purchase orders are subject to the General Conditions for the Supply of Products and Services of
the Electrical and Electronics Industry recommended by the ZVEI (German Electrical and Electronic
Manufacturers' Association), unless otherwise agreed.
This brochure replaces the previous edition.
For questions on technology, prices and delivery please contact the Sales Offices of EPCOS AG or
the international Representatives.
Due to technical requirements components may contain dangerous substances. For information on
the type in question please also contact one of our Sales Offices.
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