Aluminum electrolytic capacitors
Capacitors with screw terminals
Series/Type: B44020, B44030
Date: December 2010
© EPCOS AG 2010. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
Accessories for capacitors with mounting stud on capacitor base
Capacitor
diameter
Thread size Dimensional drawing Diameter d
mm
Ordering code
Insulating plastic shoulder washer "P" similiar to DIN 41331 specifications
≤40 mm M8 8.4 B44020B0001B025
> 40 mm M12 12.5 B44020B0002B030
Insulating washer "N" made of laminated paper
≤40 mm M8
M12
8.4 B44020A0001B025
> 40 mm 13 B44020A0002B025
Insulating washer made of Hostalen
51.6 mm d10.5 = 51
d20.5 = 31 B44020B0006B051
76.9 mm d10.5 = 76
d20.5 = 56 B44020B0006B076
Screw terminals Accessories B44020
Screw terminals Accessories
Page 2 of 14Please read Cautions and warnings and
Important notes at the end of this document.
Capacitor
diameter
Thread size Dimensional drawing Ordering code
Plastic cap nut "V"
≤40 mm
M8
width across
flats 13 mm
B44020B0005B008
> 40 mm
M12
width across
flats 17 mm
B44020A0005B012
Reinforced nylon cap nut
> 40 mm
M12
width across
flats 19 mm
B44020J0006B012
≤40 mm
M8
width across
flats 17 mm
B44020J0006B008
> 40 mm
M12
width across
flats 19 mm
B44020J0007B012
B44020
Screw terminals Accessories
Page 3 of 14Please read Cautions and warnings and
Important notes at the end of this document.
Mounting instructions
Non-insulated mounting with cap nut
Insulated mounting with cap nut
Mounting hole diameter
Insulated mounting with DIN 439 hex nut
d≤76.9 mm d = 91 mm
Mounting hole diameter Mounting hole diameter
B44020
Screw terminals Accessories
Page 4 of 14Please 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
35 15 10
B44030J0036B000
(insulating strip
length: 230 mm)
50 22 15
B44030J0051B000
(insulating strip
length: 325 mm)
B44030
Screw terminals Accessories
Page 5 of 14Please read Cautions and warnings and
Important notes at the end of this document.
dNh1
mm
h2Ring clip version Ordering code
with insulating strip
65 29 19
B44030J0064B000
(insulating strip
length: 420 mm)
75 29 19
B44030J0075B000
(insulating strip
length: 495 mm)
90 29 19
B44030J0090B000
(insulating strip
length: 585 mm)
B44030
Screw terminals Accessories
Page 6 of 14Please 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
Page 7 of 14Please 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
Page 8 of 14Please read Cautions and warnings and
Important notes at the end of this document.
Cautions and warnings
Personal safety
The electrolytes used by EPCOS have not only been optimized with a view to the intended
application, but also 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, part of the high-voltage electrolytes used by EPCOS are self-extinguishing. They
contain flame-retarding substances which will quickly extinguish any flame that may have been
ignited.
As far as possible, EPCOS does not use any dangerous chemicals or compounds to produce
operating electrolytes. However, in exceptional cases, such materials must be used in order to
achieve specific physical and electrical properties because no safe substitute materials are
currently known. However, the amount of dangerous materials used in our products has been
limited to an absolute minimum. Nevertheless, the following rules should be observed when
handling Al electrolytic capacitors:
Any escaping electrolyte should not come into contact with eyes or skin.
If electrolyte does come into contact with the skin, wash the affected parts 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 breathing in 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
Page 9 of 14Please read Cautions and warnings and
Important notes at the end of this document.
Product safety
The table below summarize 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 polarity classes should be prevented by
connecting a diode.
3.1.6
"Reverse voltage"
Upper category
temperature
Do not exceed the upper category temperatur. 7.2
"Maximum permissible
operating temperature"
Maintenance Make periodic inspections of the capacitors.
Before the inspection, make sure that the power
supply is turned off and carefully discharge the
electricity of the capacitors.
Do not apply any mechanical stress to the
capacitor terminals.
10
"Maintenance"
Mounting
position of screw
terminal capacitors
Do not mount the capacitor with the terminals
(safety vent) upside down.
11.1
"Mounting positions of
capacitors with screw
terminals"
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"
Robustness of
terminals
The following maximum tightening torques must
not be exceeded when connecting screw
terminals:
M5: 2 Nm
M6: 2.5 Nm
11.3
"Mounting torques"
Soldering Do not exceed the specified time or temperature
limits during soldering.
11.5
"Soldering"
B44020, B44030
Screw terminals Accessories
Page 10 of 14Please read Cautions and warnings and
Important notes at the end of this document.
Topic Safety information Reference
Chapter "General
technical information"
Soldering,
cleaning agents
Do not allow halogenated hydrocarbons to come
into contact with aluminum electrolytic capacitors.
11.6
"Cleaning agents"
Passive
flammability
Avoid external energy, such as fire or electricity. 8.1
"Passive flammability"
Active
flammability
Avoid overload of the capacitors. 8.2
"Active flammability"
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"
B44020, B44030
Screw terminals Accessories
Page 11 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
IAC,R (B) Rated ripple current for base cooling Nennwechselstromstrom für Bodenkühlung
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
∆T Temperature difference Temperaturdifferenz
TAAmbient temperature Umgebungstemperatur
TCCase temperature Gehäusetemperatur
TBCapacitor base temperature Temperatur des Becherbodens
t Time Zeit
∆t Period Zeitraum
tbService life (operating hours) Brauchbarkeitsdauer (Betriebszeit)
B44020, B44030
Screw terminals Accessories
Page 12 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 13 of 14Please read Cautions and warnings and
Important notes at the end of this document.
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 re-
quirements 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 incum-
bent on the customer to check and decide whether an EPCOS product with the properties de-
scribed 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 lifesaving 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 Ma-
terial Data Sheets on the Internet (www.epcos.com/material). Should you have any more de-
tailed 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 fore-
going for customer-specific products.
6. Unless otherwise agreed in individual contracts, all orders are subject to the current ver-
sion of the "General Terms of Delivery for Products and Services in the Electrical In-
dustry" published by the German Electrical and Electronics Industry Association
(ZVEI).
7. The trade names EPCOS, BAOKE, Alu-X, CeraDiode, CSMP, CSSP, CTVS, DeltaCap,
DigiSiMic, DSSP, FormFit, MiniBlue, MiniCell, MKK, MKD, MLSC, MotorCap, PCC,
PhaseCap, PhaseCube, PhaseMod, PhiCap, SIFERRIT, SIFI, SIKOREL, SilverCap,
SIMDAD, SiMic, SIMID, SineFormer, SIOV, SIP5D, SIP5K, ThermoFuse, WindCap are trade-
marks registered or pending in Europe and in other countries. Further information will be
found on the Internet at www.epcos.com/trademarks.
Important notes
Page 14 of 14
