EMC filters
1-line filters
Feedthrough capacitors
Rated current 16 to 200 A
Series/Type:
B85111, B85121
Date:
January 2006
EPCOS AG 2006. Reproduction, publication and dissemination of this data sheet and the
information contained therein without EPCOS' prior express consent is prohibited.
1-line filters
Feedthrough components
Overview of available types
Type
Dia
meter
mm
New
Rat
ed cu
rrent
(A
)
Rat
ed vo
l
t
age
(V
AC)
Rated
capac
i
t
ance
(F
)
T
e
rminal t
y
pe
Insertion loss in the
frequeny range (Hz)
Page
10
5
10
6
10
7
Feedthrough capacitors
5
B85121A*+160 16
16
75 ...
440
0.00125 ...
1.0
6
B85121A*+250 20
25
75 ...
440
0.01 ...
1.0
8
B85111A*B500 24
50
250
0.05
10
B85121A*A250
B85121A*A750
30
25,
75
250
0.1 ...
1.0
11
B85121A*A630,
A101, A201
55
63 ...
200
250
0.5 ...
4.7
12
Legend
Terminal type:
Axial leads
Threaded studs
Please read Cautions and warnings and
Important notes at the end of this document.
01/06
2
1-line filters
Feedthrough components
General
Feedthrough components from EPCOS are used for EMI suppression of all electrical installations
and equipment. This new type series is also outstandingly well suited for telephone exchanges and
base stations. Thanks to broadband EMI suppression up to the GHz range, it prevents external in
terference pulses being transmitted to the inside of the equipment via the supply network and vice
versa.
The essential features of this new type series are its modular design and the solder-free contacting
technology developed by EPCOS with the aid of mesh contact.
Mesh contact technology permits uniform concentric contacting of the MKP capacitor winding and
avoids the thermal stress associated with soldering. The result is an even higher insertion loss, a
high insulation resistance and a particularly compact case.
The modular system used in this new technology for feedthrough capacitors and filters allows the
cost-effective implementation of a wide range of standard types. Other capacitance values can also
be supplied for special applications upon request.
Feedthrough components fitted
into a shielding wall.
In feedthrough capacitors, the conductor carrying the operating current is connected concentrically
to one electrode and is run centrally through the capacitor. The other electrode is contacted con
centrically to the capacitor case.
Feedthrough capacitors are dimensioned so that they perform well from low frequencies to far above
300 MHz. The capacitor element with low inductance contacted securely on the face side is
incorporated in a metal case provided with a screw thread.
The feedthrough filters are constructed in a
-circuit. They consist of two identical capacitative
transverse elements and an inductive longitudinal element. The concentric layout of the compon
ents allows high insertion loss values to be attained in a frequency range to above 1 GHz.
Safety note
Feedthrough components with high capacitances require the implementation of safety measures in
line with the applicable specifications! (See also Chapter "Mounting instructions".)
Please read Cautions and warnings and
Important notes at the end of this document.
01/06
3
1-line filters
Feedthrough components
Mounting instructions
To fully utilize their RF properties, the feedthrough components must be mounted directly into shiel
ding walls. The case must be contacted seamlessly (sealed against RF signals) to the shielding
wall. This can be best done by screwing it into a threaded hole or bushing so that contact is made
via the threads.
Alternatively, the feedthrough components may be screwed into feed-through holes on the shielding
wall by means of attachment nuts. The contact between case and the shielding wall is then set up
via the contact surface of the thread.
Caution
Contacts with rigid copper busbars are not permitted in view of mechanical stresses of the
bushings due to impacts and vibrations.
For types with screw connections, the connecting cable must be secured between two nuts
to exclude a torque on the feedthrough pins. The use of two flat wrenches is recommended.
Recommended tightening torques for feedthrough components (capacitors, filters)
Thread
dimensions
Tightening
torque (Nm)
Tolerance (Nm)
Terminal
Thread base
attachment
M2
0.2
+0.05
M3
0.6
+0.1
M4
1.2
+0.1
M5
2
+0.5
M6
3
+0.5
M8
5
+0.5
M10
8
+2
M12
12
+2
M16
28
+2
M18
35
+2
M10
0.75
3
+0.5
M12
0.75
4
+0.5
M20
1
0
+1
M24
1.5
12
+1.5
M27
1.5
16
+2
M32
1.5
24
+2.5
1
Please read Cautions and warnings and
Important notes at the end of this document.
01/06
4
1-line filter components
B85111, B85121
Feedthrough capacitors
Rated voltage 75 to 440 V AC
Rated current 16 to 200 A
Rated capacitance 0.00125 to 4.7
F
Construction
Building-block system
MKP technology (dry, self-healing)
Dielectric: polypropylene, metallized
Metal case, polyurethane potting (UL 94 V-0)
For central screw fixing
Features
Compact dimensions
High insertion loss
Easy to install
High contact reliability thanks to central screw fixing
Comply with IEC 60384-14
UL approval
Applications
Broadband interference suppression
for AC/DC supply lines, e.g. in
shielded rooms
telephone exchanges, base stations
electrical machines and systems
power supplies
Terminals
Threaded studs
Axial leads
Marking
Manufacturer, ordering code, rated capacitance,
rated voltage, rated current, climatic category,
circuit diagram, date of manufacture (MM.YY), approvals
Circuit diagram
SSB1275-J
Please read Cautions and warnings and
Important notes at the end of this document.
01/06
5
1-line filter components
B85121A*+160
16 mm, 16 A
Feedthrough capacitors
Feedthrough capacitors
16 mm
Technical data and measuring conditions
Rated voltage V
R
75 ... 440 V AC, 50/60 Hz
160 ... 600 V DC
Rated current I
R
Referred to 40
C ambient temperature
Reduced current values at 400 Hz
Capacitance tolerance
20%
Climatic category (IEC 60068-1)
40/085/56 (40
C/+85 C/56 days damp heat test)
Screw cap fixing
M10
0.75
Approvals
UL 1283, 250 V
Characteristics and ordering codes
I
R
A
C
R
F
V
R
V AC
V
R
V DC
V
test
V DC
Terminal Figure Ordering code
Approvals
16
0.00125 250
600
4000
Leads
2 mm
1
B85121A2122C160
0.0025
440
600
4350
B85121A4252C160
0.005
250
600
4000
B85121A2502C160
0.010
250
600
1750
B85121A2103C160
0.025
250
600
1750
B85121A2253C160
0.05
250
600
1750
B85121A2503C160
0.1
110
160
800
B85121A1104C160
1.0
75
160
350
Leads
2 mm
2
B85121A0105B160
= approval granted
Insertion loss (dB); typical values at 50
C
R
(
F)
10 kHz
100 kHz
1 MHz
10 MHz
100 MHz
> 300 MHz
0.00125
6
35
> 40
0.0025
2
45
>
60
0.005
2
16
40
> 50
0.010
4
25
55
> 70
0.025
11
30
55
> 80
0.05
1
17
35
52
> 80
0.1
4
0
40
0
80
1.0
5
25
45
50
85
> 90
1
2
6
>
Please read Cautions and warnings and
Important notes at the end of this document.
01/06
6
1-line filter components
B85121A*+160
Feedthrough capacitors
16 mm, 16 A
Dimensional drawings
Figure 1, B85121A****C160
1...3
SSB2021-D
16
2
5
443
135 3
_
30+2
45+2
10.5+0.3
Marking
Tightening torque: 3 +0.5 Nm
Figure 2, B85121A****B160
1...3
SSB2037-Z
2
16
155
60+2
45+2
3
_
443
5
10.5+0.3
Marking
Tightening torque: 3 +0.5 Nm
M10 x 0.75
M10 x 0.75
Please read Cautions and warnings and
Important notes at the end of this document.
01/06
7
1-line filter components
B85121A*+250
20 mm, 25 A
Feedthrough capacitors
Feedthrough capacitors
20 mm
Technical data and measuring conditions
Rated voltage V
R
75 ... 440 V AC, 50/60 Hz
160 ... 600 V DC
Rated current I
R
Referred to 40
C ambient temperature
Reduced current values at 400 Hz
Capacitance tolerance
20%
Climatic category (IEC 60068-1)
40/085/56 (40
C/+85 C/56 days damp heat test)
Screw cap fixing
M12
0.75
Approvals
UL 1283, 250 V
Characteristics and ordering codes
I
R
A
C
R
F
V
R
V AC
V
R
V DC
V
test
V DC
Terminal Figure Ordering code
Approvals
25
0.035
250
600
4000
M4
1
B85121A2353A250
0.010
250
600
4000
Leads
2 mm
2
B85121A2103B250
0.025
250
600
4000
B85121A2253B250
0.035
250
600
4000
B85121A2353B250
0.035
440
600
4350
B85121A4353B250
0.05
250
600
4000
B85121A2503B250
0.05
440
600
4000
B85121A4503B250
1.0
75
160
480
B85121A0105B250
= approval granted
Insertion loss (dB); typical values at 50
C
R
(
F)
10 kHz
100 kHz
1 MHz
10 MHz
100 MHz
> 300 MHz
0.025
11
30
55
> 80
0.035
1
12
32
55
> 90
0.050
2
18
35
60
> 90
1.0
5
25
45
50
85
> 90
Please read Cautions and warnings and
Important notes at the end of this document.
01/06
8
1-line filter components
B85121A*+250
Feedthrough capacitors
20 mm, 25 A
Dimensional drawings
Figure 1, B85121A****A250
1...3
SSB2025-B
20
45+2
90+2
60+2
5
2
17
_
M4
12.5+0.3
Marking
Thread
Tightening torque
M4
1.2 +0.1 Nm
M12
0.75 4.0 +0.5 Nm
Figure 2, B85121A****B250
1...3
SSB2023-U
20
2
60+2
155 3
_
45+2
453
5
12.5+0.3
Marking
Tightening torque: 4 +0.5 Nm
M12 x 0.75
M12 x 0.75
Please read Cautions and warnings and
Important notes at the end of this document.
01/06
9
1-line filter components
B85111A*B500
24 mm, 50 A
Feedthrough capacitors
Feedthrough capacitors
24 mm, housing with external screw thread
Technical data and measuring conditions
Rated voltage V
R
250 V AC, 50/60 Hz
600 V DC
Rated current I
R
Referred to 40
C ambient temperature
Reduced current values at 400 Hz
Capacitance tolerance
20%
Climatic category (IEC 60068-1)
40/085/56 (40
C/+85 C/56 days damp heat test)
Screw cap fixing
M24
1.5
Approvals
UL 1283, 250 V
Characteristics and ordering code
I
R
A
C
R
F
V
R
V AC
V
R
V DC
V
test
V DC
Terminal
Ordering code
Approvals
50
0.05
250
600
3000
M6
B85111A2503B500
= approval granted
Insertion loss (dB); typical values at 50
C
R
(
F)
10 kHz
100 kHz
1 MHz
10 MHz
100 MHz
> 300 MHz
0.05
2
18
35
60
> 90
Dimensional drawing
86
_
0.5
140.2
15 min.
202
M6
1.1
26.3
_
9
_
0.6
45
_
0.5
A/F 27
SSB2036-R-E
M24 x 1.5
Thread
Tightening torque
M6
3 +0.5 Nm
M24
1.5 12 +1.5 Nm
Please read Cautions and warnings and
Important notes at the end of this document.
01/06
10
1-line filter components
B85121A*A250, A750
30 mm, 25 A , 75 A
Feedthrough capacitors
Feedthrough capacitors
30 mm
Technical data and measuring conditions
Rated voltage V
R
250 V AC, 50/60 Hz
600 V DC
Rated current I
R
Referred to 40
C ambient temperature
Reduced current values at 400 Hz
Capacitance tolerance
20%
Climatic category (IEC 60068-1)
40/085/56 (40
C/+85 C/56 days damp heat test)
Screw cap fixing
M20
1
Approvals
UL 1283, 250 V
Characteristics and ordering codes
I
R
A
C
R
F
V
R
V AC
V
R
V DC
V
test
V DC
Terminal
Ordering code
Approvals
25
0.1
250
600
3000
M6
B85121A2104A250
0.5
250
600
2500
M6
B85121A2504A250
1.0
250
600
2000
M6
B85121A2105A250
75
0.1
250
600
3000
M6
B85121A2104A750
0.5
250
600
2500
M6
B85121A2504A750
1.0
250
600
2000
M6
B85121A2105A750
= approval granted
Insertion loss (dB); typical values at 50
C
R
(
F)
10 kHz
100 kHz
1 MHz
10 MHz
100 MHz
1 GHz
0.1
0
5
0
40
0
70
0.5
2
15
35
40
80
> 90
1.0
5
25
45
50
85
> 90
2
6
>
Dimensional drawing
SSB1271-L
Marking
M6
M6
30
5
55+1
1
110
_
Thread
Tightening
torque
M6
3 +0.5 Nm
M20
1
10 +1 Nm
M20 x 1
Please read Cautions and warnings and
Important notes at the end of this document.
01/06
11
1-line filter components
Feedthrough capacitors
B85121A*A630, A101, A201
55 mm, 63 ... 200 A
Feedthrough capacitors
55 mm
Technical data and measuring conditions
Rated voltage V
R
250 V AC, 50/60 Hz
600 V DC
Rated current I
R
Referred to 40
C ambient temperature
Reduced current values at 400 Hz
Capacitance tolerance
20%
Climatic category (IEC 60068-1)
40/085/56 (40
C/+85 C/56 days damp heat test)
Screw cap fixing
Standard M32
1.5
Special fixing M27
1.5 on request
Approvals
UL 1283, 250 V
Characteristics and ordering codes
I
R
C
R
V
R
V
R
V
test
Ter
minal
Dimensions (mm) Ordering code
Approvals
A
F
V AC V DC V DC
l +1
l
1
1 l
2
3
63
0.5
250
600
3000 M 6
30
100
50
B85121A2504A630
1.0
250
600
2500 M 6
30
100
50
B85121A2105A630
2.0
250
600
2500 M 6
60
130
50
B85121A2205A630
4.7
250
600
2000 M 6
60
130
50
B85121A2475A630
100
0.5
250
600
3000 M 8
30
110
53
B85121A2504A101
1.0
250
600
2500 M 8
30
110
53
B85121A2105A101
2.0
250
600
2500 M 8
60
140
53
B85121A2205A101
4.7
250
600
2000 M 8
60
140
53
B85121A2475A101
200
0.5
250
600
3000 M10
30
120
59
B85121A2504A201
1.0
250
600
2500 M10
30
120
59
B85121A2105A201
2.0
250
600
2500 M10
60
150
59
B85121A2205A201
4.7
250
600
2000 M10
60
150
59
B85121A2475A201
= approval granted
Insertion loss (dB); typical values at 50
C
R
(
F)
10 kHz
100 kHz
1 MHz
10 MHz
100 MHz
1 GHz
0.5
2
15
35
40
80
> 90
1.0
5
5
5
0
85
>
90
2.0
10
0
0
5
>
90
>
90
4.7
15
5
5
5
>
90
>
90
2
4
5
3
5
5
3
5
6
Please read Cautions and warnings and
Important notes at the end of this document.
01/06
12
1-line filter components
Feedthrough capacitors
B85121A*A630, A101, A201
55 mm, 63 ... 200 A
Dimensional drawing
A/F 41
551
M
M32 x 1.5
8
15+1
Marking
1
2
A/F
1
7
SSB1272-U-E
Thread
Tightening torque
M6
3 +0.5 Nm
M8
5 +0.5 Nm
M10
8 +2 Nm
M27
1.5 16 +2 Nm
M32
1.5 24 +2.5 Nm
Please read Cautions and warnings and
Important notes at the end of this document.
01/06
13
EMC filters
Cautions and warnings
Important information
Please read all safety and warning notes carefully before installing the EMC filter and putting it into
operation (see
). The same applies to the warning signs on the filter. Please ensure that the signs
are not removed nor their legibility impaired by external influences.
Death, serious bodily injury and substantial material damage to equipment may occur if the appro
priate safety measures are not carried out or the warnings in the text are not observed.
Using according to the terms
The EMC filters may be used only for their intended application within the specified values in low
voltage networks in compliance with the instructions given in the data sheets and the data book.
The conditions at the place of application must comply with all specifications for the filter used.
Warnings
It shall be ensured that only qualified persons (electricity specialists) are engaged on work such
as planning, assembly, installation, operation, repair and maintenance. They must be provided
with the corresponding documentation.
Danger of electric shock. EMC filters contain components that store an electric charge. Danger
ous voltages can continue to exist at the filter terminals for longer than five minutes even after
the power has been switched off.
The protective earth connections shall be the first to be made when the EMC filter is installed and
the last to be disconnected. Depending on the magnitude of the leakage currents, the particular
specifications for making the protective-earth connection must be observed.
Impermissible overloading of the EMC filter, such as impermissible voltages at higher frequen
cies that may cause resonances etc. can lead to destruction of the filter housing.
EMC filters must be protected in the application against impermissible exceeding of the rated
currents by suitable overcurrent protective.
14
01/06
EMC filters
Important notes
The following applies to all products named in this publication:
1. Some parts of this publication contain statements about the suitability of our products for
certain areas of application. These statements are based on our knowledge of typical
requirements that are often placed on our products in the areas of application concerned. We
nevertheless expressly point out that such statements cannot be regarded as binding
statements about the suitability of our products for a particular customer application. As
a rule, EPCOS is either unfamiliar with individual customer applications or less familiar with them
than the customers themselves. For these reasons, it is always ultimately incumbent on the
customer to check and decide whether an EPCOS product with the properties described in the
product specification is suitable for use in a particular customer application.
2. We also point out that in individual cases, a malfunction of passive electronic components
or failure before the end of their usual service life cannot be completely ruled out in the
current state of the art, even if they are operated as specified. In customer applications
requiring a very high level of operational safety and especially in customer applications in which
the malfunction or failure of a passive electronic component could endanger human life or health
(e.g. in accident prevention or life-saving systems), it must therefore be ensured by means of
suitable design of the customer application or other action taken by the customer (e.g.
installation of protective circuitry or redundancy) that no injury or damage is sustained by third
parties in the event of malfunction or failure of a passive electronic component.
3. The warnings, cautions and product-specific notes must be observed.
4. In order to satisfy certain technical requirements, some of the products described in this
publication may contain substances subject to restrictions in certain jurisdictions (e.g.
because they are classed as "hazardous"). Useful information on this will be found in our
Material Data Sheets on the Internet (www.epcos.com/material). Should you have any more
detailed questions, please contact our sales offices.
5. We constantly strive to improve our products. Consequently, the products described in this
publication may change from time to time. The same is true of the corresponding product
specifications. Please check therefore to what extent product descriptions and specifications
contained in this publication are still applicable before or when you place an order.
We also reserve the right to discontinue production and delivery of products.
Consequently, we cannot guarantee that all products named in this publication will always be
available.
6. Unless otherwise agreed in individual contracts, all orders are subject to the current version
of the "General Terms of Delivery for Products and Services in the Electrical Industry"
published by the German Electrical and Electronics Industry Association (ZVEI).
7. The trade names EPCOS, EPCOS-Jones, Baoke, CeraDiode, CSSP, MLSC, PhaseCap,
PhaseMod, SIFI, SIKOREL, SilverCap, SIMID, SIOV, SIP5D, SIP5K, UltraCap, WindCap are
trademarks registered or pending in Europe and in other countries. Further information will be
found on the Internet at www.epcos.com/trademarks.
15
01/06
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