Aluminum electrolytic capacitors
Capacitors with screw terminals
Series/Type: B43750, B43770
Date: November 2012
© EPCOS AG 2015. 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.
Long-life grade capacitors
Applications
Traction
Power electronics
Professional power supplies
Features
Extremely high ripple current capability (up to 110 A)
High reliability
Long useful life
Wide temperature range
All-welded construction ensures reliable electrical contact
No base insulation for max. cooling
(insulated solution "heat sink mounting" upon request)
Version with low-inductance design available for
diameter ≥76.9 mm
Self-extinguishing electrolyte
RoHS-compatible
Construction
Charge-discharge proof, polar
Aluminum case, partially insulated
Poles with screw terminal connections
Mounting with ring clips, clamps or threaded stud
B43750 B43770
Capacitors with screw terminals B43750, B43770
Extremely high ripple current 105 °C
Page 2 of 16Please read Cautions and warnings and
Important notes at the end of this document.
1) Refer to chapter "General technical information, 5 Useful life" on how to interpret useful life.
Specifications and characteristics in brief
Rated voltage VR
Surge voltage VS
350 ... 450 V DC
1.1 VR
Rated capacitance CR
Capacitance tolerance
560 ... 5300 µF
±20% M
Dissipation factor tan δ
(20 °C, 120 Hz) ≤0.20
Leakage current Ileak
(20 °C, 5 min)
Self-inductance ESL d = 64.3 mm: approx. 14 nH
d≥76.9 mm: approx. 18 nH
Capacitors with low-inductance design:
d≥76.9 mm: approx. 13 nH
Useful life1) Requirements:
105 °C; VR; IAC,R > 8000 h ∆C/C ≤ ±15% of initial value
85 °C; VR; IAC,R > 40000 h tan δ ≤ 1.75 times initial specified limit
40 °C; VR;3IAC,R > 250000 h Ileak ≤initial specified limit
Voltage endurance test Post test requirements:
105 °C, VR; IAC,R 2000 h ∆C/C ≤ ±10% of initial value
tan δ ≤ 1.3 times initial specified limit
Ileak ≤initial specified limit
Vibration resistance test To IEC 60068-2-6, test Fc:
Frequency range 10 ... 55 Hz, displacement amplitude 0.75 mm,
acceleration max. 10 g, duration 3 ×2 h.
Capacitor mounted by its body which is rigidly clamped to the work
surface.
Characteristics at low
temperature Max. impedance ratio Z-25°C/Z20°C4
at 100 Hz Z -40°C/Z20°C10
IEC climatic category To IEC 60068-1:
40/105/56 (40 °C/+105 °C/56 days damp heat test)
Sectional specification IEC 60384-4
B43750, B43770
Extremely high ripple current 105 °C
Page 3 of 16Please read Cautions and warnings and
Important notes at the end of this document.
Dimensional drawings
B43750
Ring clip/clamp mounting
B43770
Threaded stud mounting
Dimensions and weights
Ter-
minal
Dimensions (mm) with insulating sleeve Approx.
weight (g)
d l ±1 l1±1 l2+0/1 d1d2max. a +0.2/0.4
M6
M6
64.3 +0/0.8
64.3 +0/0.8
80.3
105.3
86.0
111.0
17
17
M12
M12
17.7
17.7
28.5
28.5
380
450
M6
M6
76.9 +0/0.7
76.9 +0/0.7
105.3
142.8
111.0
148.5
17
17
M12
M12
17.7
17.7
31.7
31.7
630
850
M6
M6
M6
91.0 +0/2
91.0 +0/2
91.0 +0/2
67.1
96.6
144.1
72.4
101.9
149.4
17
17
17
M12
M12
M12
17.7
17.7
17.7
31.7
31.7
31.7
600
1000
1300
For low-inductance design the following deviation applies:
d = 91.0 mm: l11.7 mm
B43750, B43770
Extremely high ripple current 105 °C
Page 4 of 16Please read Cautions and warnings and
Important notes at the end of this document.
Packing
Capacitor diameter
d (mm)
length l
(mm)
Packing units
(pcs.)
64.3 all 25
76.9 all 16
91.0 all 9
For ecological reasons the packing is pure cardboard.
B43750, B43770
Extremely high ripple current 105 °C
Page 5 of 16Please read Cautions and warnings and
Important notes at the end of this document.
Special design
Low-inductance design
Design Identification in third
block of ordering code
Remark
Low inductance (13 nH) M003 For capacitors with diameter d ≥76.9 mm
Accessories
The following items are included in the delivery package, but are not fastened to the capacitors:
Thread Toothed
washers
Screws/nuts Maximum
torque
For terminals M5 A 5.1 DIN 6797 DIN 7985 / ISO 7045-M5 ×10-5.6-Z 2.5 Nm
thread depth
t≥8 mm
M6 A 6.4 DIN 6797 DIN 7985 / ISO 7045-M6 ×12-5.6-Z 4.0 Nm
thread depth
t≥9.5 mm
For mounting M12 J 12.5 DIN 6797 Hex nut BM 12 DIN 439 10 Nm
The following items must be ordered separately. For details, refer to chapter "Capacitors with
screw terminals Accessories".
Item Type
Ring clips B44030
Clamps for capacitors with d ≥64.3 mm B44030
Insulating parts B44020
B43750, B43770
Extremely high ripple current 105 °C
Page 6 of 16Please read Cautions and warnings and
Important notes at the end of this document.
Overview of available types
VR(V DC) 350 400 450
Case dimensions d ×l (mm)
CR(µF)
560 64.3 ×80.3
680 91.0 ×67.1
850 64.3 ×80.3 64.3 ×105.3
1200 64.3 ×80.3 91.0 ×67.1 76.9 ×105.3
1300 64.3 ×105.3 91.0 ×96.6
1500 91.0 ×67.1
1800 64.3 ×105.3
1900 76.9 ×105.3 76.9 ×142.8
2400 91.0 ×144.1
2700 76.9 ×105.3
2900 76.9 ×142.8
3900 76.9 ×142.8 91.0 ×144.1
5300 91.0 ×144.1
The capacitance and voltage ratings listed above are available in different cases upon request.
Other voltage and capacitance ratings are also available upon request.
B43750, B43770
Extremely high ripple current 105 °C
Page 7 of 16Please read Cautions and warnings and
Important notes at the end of this document.
Technical data and ordering codes
CR
100 Hz
20 °C
µF
Case
dimensions
d×l
mm
ESRtyp
100 Hz
20 °C
mΩ
Zmax
10 kHz
20 °C
mΩ
IAC,max
10 kHz
40 °C
A
IAC,R
10 kHz
105 °C
A
IAC,R(B)
10 kHz
105 °C
A
IAC,R(T+B)
10 kHz
105 °C
A
Ordering code
(composition see
below)
Composition of ordering code
* = Mounting style # = Design
5 = for capacitors with ring clip/clamp mounting
7 = for capacitors with threaded stud
0 = for capacitors with standard inductance
3 = for capacitors with low inductance (13 nH)
(only for capacitors with diameter d ≥76.9
mm)
VR= 350 V DC
1200 64.3 ×80.3 49 32 45 9.5 21.8 25.6 B437*0A4128M000
1500 91.0 ×67.1 39 26 49 10 28.0 31.1 B437*0A4158M00#
1800 64.3 ×105.3 31 21 56 12 22.4 28.3 B437*0A4188M000
2700 76.9 ×105.3 24 13 75 16 33.0 40.9 B437*0A4278M00#
3900 76.9 ×142.8 13 9 80 20 33.8 45.7 B437*0A4398M00#
5300 91.0 ×144.1 11 8 80 26 46.5 59.4 B437*0A4538M00#
VR= 400 V DC
850 64.3 ×80.3 70 110 45 9.5 21.8 25.6 B437*0A9857M000
1200 91.0 ×67.1 47 80 49 10.4 28.0 31.1 B437*0A9128M00#
1300 64.3 ×105.3 44 74 56 12 22.4 28.3 B437*0A9138M000
1900 76.9 ×105.3 30 51 75 16 33.0 40.9 B437*0A9198M00#
2900 76.9 ×142.8 20 34 80 20 33.8 45.7 B437*0A9298M00#
3900 91.0 ×144.1 15 24 80 26 46.5 59.4 B437*0A9398M00#
VR= 450 V DC
560 64.3 ×80.3 110 180 36 7.7 17.6 20.7 B437*0A5567M000
680 91.0 ×67.1 90 150 45 9.4 25.3 28.1 B437*0A5687M00#
850 64.3 ×105.3 75 120 44 9.1 17.4 21.9 B437*0A5857M000
1200 76.9 ×105.3 50 80 54 11.4 24.0 29.7 B437*0A5128M00#
1300 91.0 ×96.6 46 73 68 14.3 31.4 37.1 B437*0A5138M00#
1900 76.9 ×142.8 32 50 74 15.5 26.3 35.6 B437*0A5198M00#
2400 91.0 ×144.1 25 40 80 20.2 36.3 46.4 B437*0A5248M00#
B43750, B43770
Extremely high ripple current 105 °C
Page 8 of 16Please read Cautions and warnings and
Important notes at the end of this document.
1) Refer to chapter "General technical information, 5 Useful life" on how to interpret useful life.
Useful life1)
depending on ambient temperature TA, TB, TT+B under ripple current operating conditions
Depending on the application, interpret the graph as follows:
1. Natural cooling
Use rated current IAC,R and ambient temperature TA.
2. Cooling of base
Use rated current IAC,R (B) and temperature of capacitor base TB.
3. Cooling of terminals and base
Use rated current IAC,R (T+B) and temperature of capacitors bas TT+B.
Ensure that the temperature of the cooled terminals is lower than that of the case base.
Due to the current load capability of the contact elements, the following current limits must not be
exceeded, even if the frequency and the temperatur factors have been taken into account:
Capacitor diameter Capacitor base cooling Terminal and capacitor base cooling
64.3 mm 62 A 75 A
76.9 mm 80 A 100 A
91.0 mm 90 A 110 A
B43750, B43770
Extremely high ripple current 105 °C
Page 9 of 16Please read Cautions and warnings and
Important notes at the end of this document.
Frequency factor of permissible ripple current IAC versus frequency f
Frequency characteristics of ESR
Typical behavior
B43750, B43770
Extremely high ripple current 105 °C
Page 10 of 16Please 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. However, in exceptional cases, such materials must be used in order to
achieve specific physical and electrical properties because no alternative materials are currently
known. However, the amount of dangerous materials used in our products is limited 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.
B43750, B43770
Extremely high ripple current 105 °C
Page 11 of 16Please 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 polarity classes should be prevented by
connecting a diode.
3.1.6
"Reverse voltage"
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"
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, such as fire or electricity. 8.1
"Passive flammability"
B43750, B43770
Extremely high ripple current 105 °C
Page 12 of 16Please 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
electricity of the capacitors.
Do not apply any mechanical stress to the
capacitor terminals.
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
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"
B43750, B43770
Extremely high ripple current 105 °C
Page 13 of 16Please 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)
B43750, B43770
Extremely high ripple current 105 °C
Page 14 of 16Please 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.
B43750, B43770
Extremely high ripple current 105 °C
Page 15 of 16Please 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, CeraLink, CSMP, CSSP, CTVS,
DeltaCap, DigiSiMic, DSSP, FilterCap, FormFit, MiniBlue, MiniCell, MKD, MKK, MLSC,
MotorCap, PCC, PhaseCap, PhaseCube, PhaseMod, PhiCap, SIFERRIT, SIFI, SIKOREL,
SilverCap, SIMDAD, SiMic, SIMID, SineFormer, SIOV, SIP5D, SIP5K, ThermoFuse,
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.
Important notes
Page 16 of 16
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
EPCOS / TDK:
B43750A4128M000 B43750A4158M000 B43750A4188M000 B43750A4278M000 B43750A4398M000
B43750A4538M000 B43750A9857M000 B43750A9128M000 B43750A9138M000 B43750A9198M000
B43750A9298M000 B43750A9398M000 B43750A5567M000 B43750A5687M000 B43750A5857M000
B43750A5128M000 B43750A5138M000 B43750A5198M000 B43750A5248M000 B43770A4128M000
B43770A4158M000 B43770A4188M000 B43770A4278M000 B43770A4398M000 B43770A4538M000
B43770A9857M000 B43770A9128M000 B43770A9138M000 B43770A9198M000 B43770A9298M000
B43770A9398M000 B43770A5567M000 B43770A5687M000 B43770A5857M000 B43770A5128M000
B43770A5138M000 B43770A5198M000 B43770A5248M000 B43750A4158M003 B43750A4278M003
B43750A4398M003 B43750A4538M003 B43750A5128M003 B43750A5138M003 B43750A5198M003
B43750A5248M003 B43750A5687M003 B43750A9128M003 B43750A9198M003 B43750A9298M003
B43750A9398M003 B43770A4158M003 B43770A4278M003 B43770A4398M003 B43770A4538M003
B43770A5128M003 B43770A5138M003 B43770A5198M003 B43770A5248M003 B43770A5687M003
B43770A9128M003 B43770A9198M003 B43770A9298M003 B43770A9398M003 B43750A4128M0007
B43750A4128M003 B43750A4158M0007 B43750A4188M0007 B43750A4188M003 B43750A4278M0007
B43750A4398M0007 B43750A4538M0007 B43750A5128M0007 B43750A5138M0007 B43750A5198M0007
B43750A5248M0007 B43750A5567M0007 B43750A5567M003 B43750A5687M0007 B43750A5857M0007
B43750A5857M003 B43750A9128M0007 B43750A9138M0007 B43750A9138M003 B43750A9198M0007
B43750A9298M0007 B43750A9398M0007 B43750A9857M0007 B43750A9857M003 B43770A4128M003
B43770A4188M003 B43770A5567M003 B43770A5857M003 B43770A9138M003 B43770A9857M003
