EMC Feedthrough Capacitors, Feedthrough components
Series/Type:
B85121, B85121A
The following products presented in this data sheet are being withdrawn.
Ordering Code
Substitute Product
B85121A4503B250
B85121A4252C160
B85121A2504A630
B85121*, B85321*
Date of
Withdrawal
2015-03-13
2015-03-13
2019-06-21
Deadline Last
Orders
2015-06-30
2015-06-30
2019-09-30
Last
Shipments
2015-09-30
2015-09-30
2019-12-31
Ordering Code
Substitute Product
B85121A2504A201
B85121A2504A101
B85121A2503C160
B85121A2503B250
B85121A2475A630
B85121A2475A201
B85121A2475A101
B85121A2353A250
B85121A2205A630
B85121A2205A201
B85121A2205A101
B85121A2105A750
B85121A2105A630
B85121A2105A250
B85121A2105A201
B85121A2105A101
B85121A2104E750
B85121A2103C160
B85121A1104C160
B85121*, B85321*
B85121*, B85321*
B85121*, B85321*
B85121*, B85321*
B85121*, B85321*
B85121*, B85321*
B85121*, B85321*
B85121*, B85321*
Date of
Withdrawal
2019-06-21
2019-06-21
2015-03-13
2015-03-13
2019-06-21
2019-06-21
2019-06-21
2015-03-13
2019-06-21
2019-06-21
2019-06-21
2015-03-13
2015-03-13
2015-03-13
2015-03-13
2015-03-13
2015-03-13
2015-03-13
2015-03-13
Deadline Last
Orders
2019-09-30
2019-09-30
2015-06-30
2015-06-30
2019-09-30
2019-09-30
2019-09-30
2015-06-30
2019-09-30
2019-09-30
2019-09-30
2015-06-30
2015-06-30
2015-06-30
2015-06-30
2015-06-30
2015-06-30
2015-06-30
2015-06-30
Last
Shipments
2019-12-31
2019-12-31
2015-09-30
2015-09-30
2019-12-31
2019-12-31
2019-12-31
2015-09-30
2019-12-31
2019-12-31
2019-12-31
2015-09-30
2015-09-30
2015-09-30
2015-09-30
2015-09-30
2015-09-30
2015-09-30
2015-09-30
Please contact your nearest TDK sales office if you need support in selecting a suitable
substitute. The addresses of our worldwide sales network are presented at www.tdkelectronics.tdk.com/sales.
Ordering Code
B85121A2503B250
B85121A2353A250
B85121A2105A750
B85121A2105A630
B85121A2105A250
B85121A2105A201
B85121A2105A101
B85121A2104E750
B85121A2103C160
B85121A1104C160
Substitute Product
Date of
Withdrawal
2015-03-13
2015-03-13
2015-03-13
2015-03-13
2015-03-13
2015-03-13
2015-03-13
2015-03-13
2015-03-13
2015-03-13
Deadline Last
Orders
2015-06-30
2015-06-30
2015-06-30
2015-06-30
2015-06-30
2015-06-30
2015-06-30
2015-06-30
2015-06-30
2015-06-30
Last
Shipments
2015-09-30
2015-09-30
2015-09-30
2015-09-30
2015-09-30
2015-09-30
2015-09-30
2015-09-30
2015-09-30
2015-09-30
For further information please contact your nearest EPCOS sales office, which will also support
you in selecting a suitable substitute. The addresses of our worldwide sales network are
presented at www.epcos.com/sales.
Feedthrough components
B85121
Capacitors
Rated voltage VR: 110 V AC to 440 V AC
Rated current IR: 16 A to 200 A
Rated capacitance CR: 0.0025 µF to 4.7 µF
Construction
Building-block system
MKP/MKT technology (dry, self-healing)
Dielectric: polypropylene or polyester, 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
Design complies with IEC 60384-14
UL 60384-14 pending
Typical 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
Marking on component:
Manufacturer's logo, ordering code, rated capacitance,
rated voltage, rated current, climatic category, circuit
diagram, date code
Minimum data on packaging:
Manufacturer's logo, ordering code, quantity, date code
Circuit diagram
Please read Cautions and warnings and
Important notes at the end of this document.
Page 2 of 13
Feedthrough components
B85121A*160
∅ 16 mm, 16 A
Capacitors
Feedthrough capacitors ∅ 16 mm
Technical data and measuring conditions
Rated voltage VR
Rated current IR
Capacitance tolerance
Climatic category (IEC 60068-1)
110 V AC … 440 V AC (50/60 Hz) / 160 V DC … 600 V DC
Referred to 40 °C rated temperature
Reduced current values at 400 Hz
±20%
40/085/56 (40 °C/+85 °C/56 days damp heat test)
Screw cap fixing
M10 × 0.75
Approvals
UL 60384-14, 250 V AC pending1)
1) UL1283 approval expired in Dec. 2013
Characteristics and ordering codes
IR
CR
A
µF
VR = 110 V AC
16
0.1
VR = 250 V AC
16
0.01
16
0.05
VR = 440 V AC
16
0.0025
VR
DC
V
Vtest
DC
V
Terminal
Approx.
weight
g
Ordering code
Approvals
160
800
Axial leads
45
B85121A1104C160
P
600
600
1750
1750
Axial leads
Axial leads
45
45
B85121A2103C160
B85121A2503C160
P
P
600
4350
Axial leads
45
B85121A4252C160
P
P = Approval pending
Insertion loss (dB); typical values at 50 Ω
CR (µF)
10 kHz
100 kHz
1 MHz
10 MHz
100 MHz
> 300 MHz
0.0025
12
45
> 60
4
25
55
> 70
1
17
35
52
> 80
4
20
40
60
> 80
0.01
0.05
0.1
Dimensional drawing
B85121A*C160
Tightening torque: 3 +0.5 Nm
General tolerances according to ISO 2768cL
Dimensions in mm
Please read Cautions and warnings and
Important notes at the end of this document.
Page 3 of 13
Feedthrough components
B85121A*250, E750
∅ 20 mm, 25 A, 75 A
Capacitors
Feedthrough capacitors ∅ 20 mm
Technical data and measuring conditions
Rated voltage VR
Rated current IR
Capacitance tolerance
Climatic category (IEC 60068-1)
250 V AC … 440 V AC (50/60 Hz) / 600 V DC
Referred to 40 °C rated temperature
(B85121A*E750 referred to 50 °C rated temperature)
Reduced current values at 400 Hz
±20%
40/085/56 (40 °C/+85 °C/56 days damp heat test)
Screw cap fixing
M12 × 0.75
Approvals
UL 60384-14, 250 V AC pending1)
1) UL1283 approval expired in Dec. 2013
Characteristics and ordering codes
IR
CR
A
µF
Vtest
DC
V
Terminal
Figure Approx. weight Ordering code
Approvals
g
VR = 250 V AC, VR = 600 V DC
25 0.035 4000 M4
25 0.05 4000 Axial leads
75 0.1
1700 M6
VR = 440 V AC, VR = 600 V DC
25 0.05 4000 Axial leads
1
2
3
60
60
70
B85121A2353A250
B85121A2503B250
B85121A2104E750
P
P
P
2
60
B85121A4503B250
P
P = Approval pending
Insertion loss (dB); typical values at 50 Ω
CR (µF)
10 kHz
100 kHz
1 MHz
10 MHz
100 MHz
> 300 MHz
0.035
1
12
32
55
> 90
2
18
35
60
> 90
5
22
40
70
> 90
0.05
0.1
Please read Cautions and warnings and
Important notes at the end of this document.
Page 4 of 13
Feedthrough components
B85121A*250, E750
∅ 20 mm, 25 A, 75 A
Capacitors
Dimensional drawings
Figure 1, B85121A2353A250
Thread
Tightening torque
M4
1.2 +0.1 Nm
M12 × 0.75
4.0 +0.5 Nm
General tolerances according to ISO 2768cL
Dimensions in mm
Figure 2, B85121A*B250
Tightening torque: 4 +0.5 Nm
General tolerances according to ISO 2768cL
Dimensions in mm
Figure 3, B85121A2104E750
Thread
Tightening torque
M6
3 +0.1 Nm
M12 × 0.75
4 +0.5 Nm
General tolerances according to ISO 2768cL
Dimensions in mm
Please read Cautions and warnings and
Important notes at the end of this document.
Page 5 of 13
Feedthrough components
B85121A*A250, A750
∅ 30 mm, 25 A, 75 A
Capacitors
Feedthrough capacitors ∅ 30 mm
Technical data and measuring conditions
Rated voltage VR
Rated current IR
Capacitance tolerance
Climatic category (IEC 60068-1)
250 V AC (50/60 Hz) / 600 V DC
Referred to 40 °C rated temperature
Reduced current values at 400 Hz
±20%
40/085/56 (40 °C/+85 °C/56 days damp heat test)
Screw cap fixing
M20 × 1
Approvals
UL 60384-14, 250 V AC pending1)
1) UL1283 approval expired in Dec. 2013
Characteristics and ordering codes
IR
A
CR
µF
Terminal
Approx. weight
g
VR = 250 V AC, VR = 600 V DC, Vtest = 2000 V DC
25
1.0
M6
180
75
1.0
M6
180
Ordering code
Approvals
B85121A2105A250
B85121A2105A750
P
P
P = Approval pending
Insertion loss (dB); typical values at 50 Ω
CR (µF)
10 kHz
100 kHz
1 MHz
10 MHz
100 MHz
1 GHz
1.0
5
25
45
50
85
> 90
Dimensional drawing
Thread
M6
M20 × 1
Tightening torque
3 +0.5 Nm
10 +1 Nm
General tolerances according to ISO 2768cL
Dimensions in mm
Please read Cautions and warnings and
Important notes at the end of this document.
Page 6 of 13
Feedthrough components
B85121A*A630, A101, A201
∅ 55 mm, 63 A ... 200 A
Capacitors
Feedthrough capacitors ∅ 55 mm
Technical data and measuring conditions
Rated voltage VR
Rated current IR
Capacitance tolerance
Climatic category (IEC 60068-1)
250 V AC (50/60 Hz) / 600 V DC
Referred to 40 °C rated temperature
Reduced current values at 400 Hz
±20%
40/085/56 (40 °C/+85 °C/56 days damp heat test)
Screw cap fixing
M32 × 1.5
Approvals
UL 60384-14, 250 V AC pending1)
1) UL1283 approval expired in Dec. 2013
Characteristics and ordering codes
IR
CR
A
µF
Vtest
DC
V
Terminal
VR = 250 V AC, VR = 600 V DC
63
0.5
3000 M6
63
1.0
2500 M6
63
2.0
2500 M6
63
4.7
2000 M6
100
0.5
3000 M8
100
1.0
2500 M8
100
2.0
2500 M8
100
4.7
2000 M8
200
0.5
3000 M10
200
1.0
2500 M10
200
2.0
2500 M10
200
4.7
2000 M10
Dimensions
l+1 l1-1 l2-3
mm
Approx.
weight
g
Ordering code
Approvals
30
30
60
60
30
30
60
60
30
30
60
60
250
250
300
300
250
250
300
300
250
250
350
350
B85121A2504A630
B85121A2105A630
B85121A2205A630
B85121A2475A630
B85121A2504A101
B85121A2105A101
B85121A2205A101
B85121A2475A101
B85121A2504A201
B85121A2105A201
B85121A2205A201
B85121A2475A201
P
P
P
P
P
P
P
P
P
P
P
P
100
100
130
130
110
110
140
140
120
120
150
150
50
50
50
50
53
53
53
53
59
59
59
59
P = Approval pending
Insertion loss (dB); typical values at 50 Ω
CR (µF)
10 kHz
100 kHz
1 MHz
10 MHz
100 MHz
1 GHz
0.5
2
15
35
40
80
> 90
1.0
5
25
45
50
85
> 90
2.0
10
30
50
55
> 90
> 90
4.7
15
35
55
65
> 90
> 90
Please read Cautions and warnings and
Important notes at the end of this document.
Page 7 of 13
Feedthrough components
B85121A*A630, A101, A201
∅ 55 mm, 63 A ... 200 A
Capacitors
Dimensional drawing
General tolerances according to ISO 2768cL
Dimensions in mm
Thread
Tightening torque
M6
3 +0.5 Nm
M8
5 +0.5 Nm
M10
8 +2
Thread
Tightening torque
M32 × 1.5
24 +2.5 Nm
Nm
Please read Cautions and warnings and
Important notes at the end of this document.
Page 8 of 13
Feedthrough components
B85121
Capacitors
Cautions and warnings
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
appropriate 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 lowvoltage 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.
Warning
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. Dangerous 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 or filter, such as with circuits able to cause resonances, impermissible voltages at higher frequencies etc. can lead to bodily injury and death as
well as cause substantial material damages (e.g. destruction of the filter housing).
EMC filters and filters must be protected in the application against impermissible exceeding of
the rated currents by overcurrent protective circuitry.
In case of leakage currents >3.5 mA you shall mount the PE conductor stationary with the
required cross section before beginning of operation and save it against disconnecting. For
leakage currents IL1) 250 A
Instructions
Reference chapter
(data book),
paragraph
For operating currents greater than 250 A, we Mounting
recommend the PE connection to be set up between instructions, point
the feed (filter: line) and output (filter: load) not via the 2
PE terminal bolt in the filter housing.
Mounting position
Note the mounting position of the filters! It must Mounting
always be ensured that natural convection is not instructions, point
impaired.
13
Long motor cables
Long motor cables cause parasitic currents in the
installation. The cable lengths indicated for the output
chokes and output filters serve for orientation. The
user must check the technical parameters and
especially the choke temperatures for the respective
application.
Mounting
instructions, point
15
Display of ordering codes for EPCOS products
The ordering code for one and the same product can be represented differently in data sheets,
data books, other publications and the website of EPCOS, or in order-related documents such as
shipping notes, order confirmations and product labels. The varying representations of the
ordering codes are due to different processes employed and do not affect the specifications of the
respective products. Detailed information can be found on the Internet under
www.epcos.com/orderingcodes
Please read Cautions and warnings and
Important notes at the end of this document.
Page 11 of 13
Feedthrough components
B85121
Capacitors
Symbols and terms
Symbol
English
α
Insertion loss
CR
Rated capacitance
CX
Capacitance X capacitor
CY
Capacitance Y capacitor
∆V
Voltage drop (input to output)
dv/dt
Rate of voltage rise
f
Frequency
fM
Converter output frequency
fP
Pulse frequency
fR
Rated frequency
fres
Resonant frequency
IC
Current through capacitor
ILK
Filter leakage current
Imax
Maximum current
IN
Nominal current
Iop
Operating current (design current)
Ipk
Rated peak withstand current
Iq
Capacitive reactive current
IR
Rated current
IS
Interference current
L
Inductance
LR
Rated inductance
Lstray
Stray inductance
PL
Power loss
R
Resistance
Ris
Insulation resistance
Rtyp
DC resistance, typical value
TA
Ambient temperature
Tmax
Upper category temperature
Tmin
Lower category temperature
TR
Rated temperature
uk
Refered voltage drop in %
Veff
RMS voltage
VK
Voltage drop
VLE
Voltage line to earth; voltage line to ground
VN
Nominal voltage
VR
Rated voltage
Vpeak
Peak voltage
Vtest
Test voltage
VX
Voltage over X capacitor
VY
Voltage over Y capacitor
XL
Inductive reactance
Z
Impedance
|Z|
Impedance, absolute value
Please read Cautions and warnings and
Important notes at the end of this document.
Page 12 of 13
German
Einfügungsdämpfung
Bemessungskapazität
Kapazität X-Kondensator
Kapazität Y-Kondensator
Spannungsabfall im Filter
Spannungsanstiegsgeschwindigkeit
Frequenz
Motorfrequenz
Pulsfrequenz
Bemessungsfrequenz
Resonanzfrequenz
Strom durch Kondensator
Filter-Ableitstrom
Maximalstrom
Nennstrom
Betriebsstrom
Bemessungs-Stoßstromfestigkeit
Kapazitiver Blindstrom
Bemessungsstrom
Störstrom
Induktivität
Bemessungsinduktivität
Streuinduktivität
Verlustleistung
Widerstand
Isolationswiderstand
Gleichstromwiderstand, Richtwert
Umgebungstemperatur
Obere Kategorietemperatur
Untere Kategorietemperatur
Bemessungstemperatur
Bezogener Spannungsabfall in %
Effektivspannung
Spannungsabfall
Spannung Phase zu Erdpotential
Nennspannung
Bemessungsspannung
Spitzenspannung
Prüfspannung
Spannung über X-Kondensator
Spannung über Y-Kondensator
Induktiver Blindwiderstand
Scheinwidertand
Scheinwiderstand (Betragswert)
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 we are 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 a 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 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 an
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 an 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.tdk-electronics.tdk.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. The
aforementioned does not apply in the case of individual agreements deviating from the foregoing for
customer-specific products.
6. Unless otherwise agreed in individual contracts, all orders are subject to our General Terms and
Conditions of Supply.
7. Our manufacturing sites serving the automotive business apply the IATF 16949 standard. The
IATF certifications confirm our compliance with requirements regarding the quality management system
in the automotive industry. Referring to customer requirements and customer specific requirements
(“CSR”) TDK always has and will continue to have the policy of respecting individual agreements. Even
if IATF 16949 may appear to support the acceptance of unilateral requirements, we hereby like to
emphasize that only requirements mutually agreed upon can and will be implemented in our
Quality Management System. For clarification purposes we like to point out that obligations from IATF
16949 shall only become legally binding if individually agreed upon.
8. The trade names EPCOS, CeraCharge, CeraDiode, CeraLink, CeraPad, CeraPlas, CSMP, CTVS,
DeltaCap, DigiSiMic, ExoCore, FilterCap, FormFit, LeaXield, MiniBlue, MiniCell, MKD, MKK, MotorCap,
PCC, PhaseCap, PhaseCube, PhaseMod, PhiCap, PowerHap, PQSine, PQvar, SIFERRIT, SIFI,
SIKOREL, SilverCap, SIMDAD, SiMic, SIMID, SineFormer, SIOV, ThermoFuse, WindCap are
trademarks registered or pending in Europe and in other countries. Further information will be found
on the Internet at www.tdk-electronics.tdk.com/trademarks.
Release 2018-10
Page 13 of 13