Aluminum electrolytic capacitors
Capacitors with screw terminals – Accessories
Series/Type: B44020, B44030
Date: February 2017
© EPCOS AG 2017. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
EPCOS AG is a TDK Group Company.
Accessories for capacitors with mounting stud on capacitor base
Insulating washer made of hostalen
Capacitor
diameter
Thread
size
Dimensional drawing Diameter d
mm
Ordering code
51.6 mm M12
d10.5 = 51
d20.5 = 31
d3±0.3 = 21.5
d4±0.2=13
B44020B0006B051
64.2 mm M12
d10.5 = 63.5
d20.5 = 43.5
d3±0.3 = 21.5
d4±0.2 = 13
B44020B0006B064
76.9 mm M12
d10.5 = 76
d20.5 = 56
d3±0.3 = 21.5
d4±0.2 = 13
B44020B0006B076
90 mm M12
d10.5 = 89
d20.5 = 69
d3±0.3 = 21.5
d4±0.2 = 13
B44020B0006B090
Only for capacitors with threaded stud and without insulated base
Reinforced nylon cap nut
Capacitor
diameter
Thread
size
Dimensional drawing Ordering code
>40mm M121)
width across
flats 19 mm
B44020J0006B012
B44020J0007B012
1) Maximum torque M12: 7.0 Nm for mounting thread length ≥13 mm; 5.0 Nm for mounting thread length ≥10 mm
Screw terminals Accessories B44020
Screw terminals Accessories
Page2of14Please read Cautions and warnings and
Important notes at the end of this document.
Mounting instructions
Insulated mounting with washer and cap nut (for capacitors with threaded stud and without
insulated base):
Mounting stud has the same potential as the negative terminal. Attention must be paid on any
relevant regulations (e.g. VDE, BSA or UL).
B44020
Screw terminals Accessories
Page3of14Please read Cautions and warnings and
Important notes at the end of this document.
Ring clip mounting
Ring clips are primarily used for upright mounting of screw terminal and photoflash capacitors.
The ring clips are corrosion protected and are RoHS-compatible.
It is recommended to insert an additional insulating strip between capacitor and ring clip to avoid
any risk of damage due to edges from the clip. The strip is included in delivery. For ordering code,
see the following table. Attention must be paid to any relevant regulations (e.g. VDE, BSA or UL).
dNh1
mm
h2Ring clip version Ordering code
with insulating strip
51.6 22 15
B44030J0051B000
(insulating strip
length: 325 mm)
B44030
Screw terminals Accessories
Page4of14Please read Cautions and warnings and
Important notes at the end of this document.
dNh1
mm
h2Ring clip version Ordering code
with insulating strip
64.3 29 19
B44030J0064B000
(insulating strip
length: 420 mm)
76.9 29 19
B44030J0075B000
(insulating strip
length: 495 mm)
90 29 19
B44030J0090B000
(insulating strip
length: 585 mm)
B44030
Screw terminals Accessories
Page5of14Please read Cautions and warnings and
Important notes at the end of this document.
Clamp mounting
Screw terminal capacitors without threaded stud and with a diameter ≥64.3 mm can also be
mounted with ring clamps. Clamp mounting offers the following advantages:
Optimum heat transfer between capacitor base and board due to pressure contact
High vibration resistance
Electrically insulated material
Dimensional drawing
1) Length of screw depends on application.
2) The screws have to be tightened uniformly and crosswise until the fixing part rests flatly on the
board.
3) Tubular rivets included in delivery package.
General hints for mounting: If required, the four fixation parts can be cut out from the common
carrier ring and mounted separately.
Dimensions and ordering codes
Capacitor
diameter dN
d1±0.2
mm
b
mm
Ordering code
65 mm 87 104 B44030A0165B000
75 mm 99 116 B44030A0175B000
90 mm 112 130 B44030A0190B000
Screws are not included in the delivery package.
B44030
Screw terminals Accessories
Page6of14Please read Cautions and warnings and
Important notes at the end of this document.
Mounting set (ring clamps) Dimensions and ordering codes
Protects the capacitor against tilt and the
terminals from mechanical stress
Fits for different capacitor length
Electrically insulated clamping material
Capacitor
diameter dN
∅min Ordering code
75 mm 84 mm B44030A0375B000
90 mm 96.5 mm B44030A0390B000
Dimensional drawing
B44030
Screw terminals Accessories
Page7of14Please read Cautions and warnings and
Important notes at the end of this document.
Cautions and warnings
Personal safety
The electrolytes used by EPCOS have been optimized both with a view to the intended
application and with regard to health and environmental compatibility. They do not contain any
solvents that are detrimental to health, e.g. dimethyl formamide (DMF) or dimethyl acetamide
(DMAC).
Furthermore, some of the high-voltage electrolytes used by EPCOS are self-extinguishing.
As far as possible, EPCOS does not use any dangerous chemicals or compounds to produce
operating electrolytes, although in exceptional cases, such materials must be used in order to
achieve specific physical and electrical properties because no alternative materials are currently
known. We do, however, restrict the amount of dangerous materials used in our products to an
absolute minimum.
Materials and chemicals used in EPCOS aluminum electrolytic capacitors are continuously
adapted in compliance with the EPCOS Corporate Environmental Policy and the latest
EU regulations and guidelines such as RoHS, REACH/SVHC, GADSL, and ELV.
MDS (Material Data Sheets) are available on the EPCOS website for all types listed in the data
book. MDS for customer specific capacitors are available upon request.
MSDS (Material Safety Data Sheets) are available for all of our electrolytes upon request.
Nevertheless, the following rules should be observed when handling aluminum electrolytic
capacitors: No electrolyte should come into contact with eyes or skin. If electrolyte does come
into contact with the skin, wash the affected areas immediately with running water. If the eyes
are affected, rinse them for 10 minutes with plenty of water. If symptoms persist, seek medical
treatment. Avoid inhaling electrolyte vapor or mists. Workplaces and other affected areas should
be well ventilated. Clothing that has been contaminated by electrolyte must be changed and
rinsed in water.
B44020, B44030
Screw terminals Accessories
Page8of14Please read Cautions and warnings and
Important notes at the end of this document.
Product safety
The table below summarizes the safety instructions that must be observed without fail. A detailed
description can be found in the relevant sections of chapter "General technical information".
Topic Safety information Reference
chapter "General
technical information"
Polarity Make sure that polar capacitors are connected
with the right polarity.
1
"Basic construction of
aluminum electrolytic
capacitors"
Reverse voltage Voltages of opposite polarity should be prevented
by connecting a diode.
3.1.6
"Reverse voltage"
Mounting
position of screw-
terminal capacitors
Screw terminal capacitors must not be mounted
with terminals facing down unless otherwise
specified.
11.1.
"Mounting positions of
capacitors with screw
terminals"
Robustness of
terminals
The following maximum tightening torques must
not be exceeded when connecting screw
terminals:
M5: 2.5 Nm
M6: 4.0 Nm
11.3
"Mounting torques"
Mounting of
single-ended
capacitors
The internal structure of single-ended capacitors
might be damaged if excessive force is applied to
the lead wires.
Avoid any compressive, tensile or flexural stress.
Do not move the capacitor after soldering to PC
board.
Do not pick up the PC board by the soldered
capacitor.
Do not insert the capacitor on the PC board with a
hole space different to the lead space specified.
11.4
"Mounting
considerations for
single-ended capacitors"
Soldering Do not exceed the specified time or temperature
limits during soldering.
11.5
"Soldering"
Soldering,
cleaning agents
Do not allow halogenated hydrocarbons to come
into contact with aluminum electrolytic capacitors.
11.6
"Cleaning agents"
Upper category
temperature
Do not exceed the upper category temperature. 7.2
"Maximum permissible
operating temperature"
Passive
flammability
Avoid external energy, e.g. fire. 8.1
"Passive flammability"
B44020, B44030
Screw terminals Accessories
Page9of14Please read Cautions and warnings and
Important notes at the end of this document.
Topic Safety information Reference
chapter "General
technical information"
Active
flammability
Avoid overload of the capacitors. 8.2
"Active flammability"
Maintenance Make periodic inspections of the capacitors.
Before the inspection, make sure that the power
supply is turned off and carefully discharge the
capacitors.
Do not apply excessive mechanical stress to the
capacitor terminals when mounting.
10
"Maintenance"
Storage Do not store capacitors at high temperatures or
high humidity. Capacitors should be stored at
+5 to +35 °C and a relative humidity of ≤75%.
7.3
"Shelf life and storage
conditions"
Reference
chapter "Capacitors with
screw terminals"
Breakdown strength
of insulating
sleeves
Do not damage the insulating sleeve, especially
when ring clips are used for mounting.
"Screw terminals
accessories"
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 order-
ing codes are due to different processes employed and do not affect the specifications of the re-
spective products.
Detailed information can be found on the Internet under www.epcos.com/orderingcodes.
B44020, B44030
Screw terminals Accessories
Page 10 of 14Please read Cautions and warnings and
Important notes at the end of this document.
Symbols and terms
Symbol English German
C Capacitance Kapazität
CRRated capacitance Nennkapazität
CSSeries capacitance Serienkapazität
CS,T Series capacitance at temperature T Serienkapazität bei Temperatur T
CfCapacitance at frequency f Kapazität bei Frequenz f
d Case diameter, nominal dimension Gehäusedurchmesser, Nennmaß
dmax Maximum case diameter Maximaler Gehäusedurchmesser
ESL Self-inductance Eigeninduktivität
ESR Equivalent series resistance Ersatzserienwiderstand
ESRfEquivalent series resistance at
frequency f
Ersatzserienwiderstand bei Frequenz f
ESRTEquivalent series resistance at
temperature T
Ersatzserienwiderstand bei Temperatur T
f Frequency Frequenz
I Current Strom
IAC Alternating current (ripple current) Wechselstrom
IAC,RMS Root-mean-square value of alternating
current
Wechselstrom, Effektivwert
IAC,f Ripple current at frequency f Wechselstrom bei Frequenz f
IAC,max Maximum permissible ripple current Maximal zulässiger Wechselstrom
IAC,R Rated ripple current Nennwechselstrom
Ileak Leakage current Reststrom
Ileak,op Operating leakage current Betriebsreststrom
l Case length, nominal dimension Gehäuselänge, Nennmaß
lmax Maximum case length (without
terminals and mounting stud)
Maximale Gehäuselänge (ohne Anschlüsse
und Gewindebolzen)
R Resistance Widerstand
Rins Insulation resistance Isolationswiderstand
Rsymm Balancing resistance Symmetrierwiderstand
T Temperature Temperatur
ΔT Temperature difference Temperaturdifferenz
TAAmbient temperature Umgebungstemperatur
TCCase temperature Gehäusetemperatur
TBCapacitor base temperature Temperatur des Gehäusebodens
t Time Zeit
Δt Period Zeitraum
tbService life (operating hours) Brauchbarkeitsdauer (Betriebszeit)
B44020, B44030
Screw terminals Accessories
Page 11 of 14Please read Cautions and warnings and
Important notes at the end of this document.
Symbol English German
V Voltage Spannung
VFForming voltage Formierspannung
Vop Operating voltage Betriebsspannung
VRRated voltage, DC voltage Nennspannung, Gleichspannung
VSSurge voltage Spitzenspannung
XCCapacitive reactance Kapazitiver Blindwiderstand
XLInductive reactance Induktiver Blindwiderstand
Z Impedance Scheinwiderstand
ZTImpedance at temperature T Scheinwiderstand bei Temperatur T
tan δDissipation factor Verlustfaktor
λFailure rate Ausfallrate
ε0Absolute permittivity Elektrische Feldkonstante
εrRelative permittivity Dielektrizitätszahl
ωAngular velocity; 2 πf Kreisfrequenz; 2 πf
Note
All dimensions are given in mm.
B44020, B44030
Screw terminals Accessories
Page 12 of 14Please read Cautions and warnings and
Important notes at the end of this document.
Page 13 of 14
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.
Page 14 of 14
Important notes
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
