Aluminum electrolytic capacitors
Axial-lead and soldering star capacitors
Series/Type: B41691, B41791
Date: November 2012
© EPCOS AG 2012. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
Applications
Automotive electronics
Features
Long useful life, 2000 h at up to 150 °C
Low ESR also at 63 V DC
High ripple current capability
High vibration stability
Shelf life up to 15 years at storage temperatures up to 40 °C.
To ensure solderability, the capacitors should be built into the
application within one year of delivery. After a total of two
years' storage, the operating voltage must be applied for one
hour to ensure the specified leakage current.
RoHS-compatible
Construction
Charge/discharge-proof, polar
Aluminum case with insulating sleeve
Negative pole connected to case
Terminals
Axial leads, welded to ensure perfect electrical contact
Soldering star for upright mounting on PCB available
Alternative axial-lead design with double-sided plates for
horizontal mounting available upon request
Taping and packing
Axial-lead capacitors will be delivered in pallet package
Capacitors with d ×l≤16 ×30 mm are also available taped
on reel
Soldering star capacitors are packed in cardboard
Axial-lead and soldering star capacitors B41691, B41791
Low ESR up to 150 °C
Page 2 of 16Please read Cautions and warnings and
Important notes at the end of this document.
1) If optimum circuit design is used, the values are lower by 30%.
2) Refer to chapter "General technical information, 5 Useful life" on how to interpret useful life.
3) ESRmax at 100 Hz, 20 °C
Specifications and characteristics in brief
Rated voltage VR25 ... 63 V DC
Surge voltage VS1.15 VR
Rated capacitance CR100 ... 4000 µF
Capacitance tolerance 10/+30% Q
Leakage current Ileak
(5 min, 20 °C)
Self-inductance ESL1) Diameter d (mm) 12 14 16 18 20/21
Terminals Length l (mm) Approx. ESL (nH)
axial 25 22 30
29 38
30 21 24 29 34
35 31
39 33 38 45
49 50
soldering star 25 68
30 6 7 8 10
35 9
39 9 11 13
49 14
Useful life2) Requirements:
150 °C; VR; 0.5 IAC,R > 2000 h ∆C/C ≤ ±30% of initial value
125 °C; VR; IAC,R > 10000 h ESR ≤3 times initial specified limit3)
125 °C; VR; IAC,max > 4000 h Ileak ≤initial specified limit
105 °C; VR; IAC,max > 8000 h
85 °C; VR; IAC,max > 15000 h
Voltage endurance test Post test requirements:
125 °C; VR5000 h ∆C/C ≤ ±10% of initial value
ESR ≤1.3% initial specified limit3)
Ileak ≤initial specified limit
Vibration resistance
test
To IEC 60068-2-6, test Fc: Frequency range 10 Hz ... 2 kHz, displace-
ment amplitude max. 1.5 mm, acceleration max. 20 g, duration 3 ×2 h.
Capacitor mounted by its wire leads at a distance of (6 ±1) mm from the
case and additionally clamped by the case.
IEC climatic category To IEC 60068-1: 55/125/56 (55 °C/+125 °C/56 days damp heat test)
Detail specification
Sectional specification
Similar to CECC 30301-802
IEC 60384-4
B41691, B41791
Low ESR up to 150 °C
Page 3 of 16Please read Cautions and warnings and
Important notes at the end of this document.
B41691, Axial-lead capacitors
Dimensional drawing
Dimensions, weights and packing units
d×l dmax ×Imax Approx. weight Packing units (pcs.)
mm mm g Pallet Reel
12 ×30 12.5 ×30.5 5.1 288 450
14 ×25 14.5 ×25.5 5.7 200 350
14 ×30 14.5 ×30.5 6.8 200 350
16 ×30 16.5 ×30.5 8.9 180 250
16 ×35 16.5 ×35.5 10.4 180
16 ×39 16.5 ×40 11.7 180
18 ×25 18.5 ×25.5 9.3 160
18 ×30 18.5 ×30.5 11.1 160
18 ×39 18.5 ×40 14.7 160
20 ×29 20.5 ×29.5 13.5 140
21 ×39 21.5 ×40 20.0 140
21 ×49 21.5 ×50 25.0 110
B41691, B41791
Low ESR up to 150 °C
Page 4 of 16Please read Cautions and warnings and
Important notes at the end of this document.
B41791, Soldering star capacitors
Dimensional drawings
Mounting holes d = 12 mm ... 14 mm Mounting holes d = 16 mm ... 21 mm
Dimensions, weights and packing units
d×l dmax ×Imax c±0.1 e ±0.1 Approx. weight Packing units
mm mm mm mm g pcs.
12 ×30 13.5 ×32 12.5 3.0 5.4 480
14 ×25 15.5 ×27 14.5 3.0 6.1 480
14 ×30 15.5 ×32 14.5 3.0 7.2 480
16 ×30 17.5 ×32 16.5 3.0 9.4 300
16 ×35 17.5 ×37 16.5 3.0 10.9 200
16 ×39 17.5 ×41.5 16.5 3.0 12.2 200
18 ×25 19.5 ×27 18.5 3.0 9.9 300
18 ×30 19.5 ×32 18.5 3.0 11.8 300
18 ×39 19.5 ×41.5 18.5 3.0 15.4 200
21 ×39 22.5 ×41.5 21.5 3.5 21.0 324
21 ×49 22.5 ×51.5 21.5 3.5 26.0 264
B41691, B41791
Low ESR up to 150 °C
Page 5 of 16Please read Cautions and warnings and
Important notes at the end of this document.
Overview of available types
VR(V DC) 25 40 63
Case dimensions d ×l (mm)
CR(µF)
100 12 ×30
150 14 ×25
220 14 ×30
330 12 ×30 12 ×30 18 ×25
470 14 ×25 14 ×30 16 ×39
18 ×30
560 20 ×29
680 16 ×30
18 ×25
18 ×39
820 16 ×35
1000 16 ×30
18 ×25
16 ×39
18 ×30
21 ×39
1200 20 ×29 21 ×49
1500 16 ×39
18 ×30
18 ×39
1800 20 ×29
2000 18 ×39
2200 21 ×39
2700 21 ×49
3000 21 ×39
4000 21 ×49
B41691, B41791
Low ESR up to 150 °C
Page 6 of 16Please read Cautions and warnings and
Important notes at the end of this document.
Case dimensions and ordering codes
VR
V DC
CR
100 Hz
20 °C
µF
Case
dimensions
d×l
mm
Ordering code
Axial pallet
Ordering code
Axial reel
Ordering code
Soldering star
25 330 12 ×30 B41691A5337Q001 B41691A5337Q003 B41791A5337Q001
470 14 ×25 B41691A5477Q001 B41691A5477Q003 B41791A5477Q001
1000 16 ×30 B41691A5108Q001 B41691A5108Q003 B41791A5108Q001
1000 18 ×25 B41691B5108Q001 B41791B5108Q001
1500 16 ×39 B41691A5158Q001 B41791A5158Q001
1500 18 ×30 B41691B5158Q001 B41791B5158Q001
1800 20 ×29 B41691A5188Q001
2000 18 ×39 B41691A5208Q001 B41791A5208Q001
3000 21 ×39 B41691A5308Q001 B41791A5308Q001
4000 21 ×49 B41691A5408Q001 B41791A5408Q001
40 330 12 ×30 B41691A7337Q001 B41691A7337Q003 B41791A7337Q001
470 14 ×30 B41691A7477Q001 B41691A7477Q003 B41791A7477Q001
680 16 ×30 B41691A7687Q001 B41691A7687Q003 B41791A7687Q001
680 18 ×25 B41691B7687Q001 B41791B7687Q001
820 16 ×35 B41691A7827Q001 B41791A7827Q001
1000 16 ×39 B41691A7108Q001 B41791A7108Q001
1000 18 ×30 B41691B7108Q001 B41791B7108Q001
1200 20 ×29 B41691A7128Q001
1500 18 ×39 B41691A7158Q001 B41791A7158Q001
2200 21 ×39 B41691A7228Q001 B41791A7228Q001
2700 21 ×49 B41691A7278Q001 B41791A7278Q001
63 100 12 ×30 B41691A8107Q001 B41691A8107Q003 B41791A8107Q001
150 14 ×25 B41691A8157Q001 B41691A8157Q003 B41791A8157Q001
220 14 ×30 B41691A8227Q001 B41691A8227Q003 B41791A8227Q001
330 18 ×25 B41691B8337Q001 B41791B8337Q001
470 16 ×39 B41691A8477Q001 B41791A8477Q001
470 18 ×30 B41691B8477Q001 B41791B8477Q001
560 20 ×29 B41691A8567Q001
680 18 ×39 B41691A8687Q001 B41791A8687Q001
1000 21 ×39 B41691A8108Q001 B41791A8108Q001
1200 21 ×49 B41691A8128Q001 B41791A8128Q001
B41691, B41791
Low ESR up to 150 °C
Page 7 of 16Please read Cautions and warnings and
Important notes at the end of this document.
Technical data
CR
100 Hz
20 °C
µF
Case
dimensions
d×l
mm
ESRmax
100 Hz
20 °C
mΩ
ESRmax
100 Hz
40 °C
mΩ
ESRmax
10 kHz
20 °C
mΩ
Zmax
100 kHz
20 °C
mΩ
IAC,max
10 kHz
105 °C
A
IAC,max
10 kHz
125 °C
A
IAC,R
10 kHz
125 °C
A
IAC,max
10 kHz
150 °C
A
VR= 25 V DC
330 12 ×30 290 1600 150 150 4.3 3.4 2.1 1.05
470 14 ×25 210 1200 110 102 4.6 3.7 2.2 1.1
1000 16 ×30 110 550 60 55 6.5 5.2 3.2 1.6
1000 18 ×25 100 550 53 50 7.4 5.9 3.6 1.8
1500 16 ×39 73 370 42 39 9.0 7.2 4.4 2.2
1500 18 ×30 69 370 38 35 9.4 7.5 4.6 2.3
1800 20 ×29 58 300 32 30 10.1 8.1 4.9 2.4
2000 18 ×39 50 270 28 26 12.7 10.2 6.2 3.1
3000 21 ×39 37 180 22 21 14.3 11.5 7.0 3.5
4000 21 ×49 29 135 17 16 18 14.5 8.8 4.4
VR= 40 V DC
330 12 ×30 240 1250 115 105 4.8 3.8 2.3 1.15
470 14 ×30 170 900 85 77 5.7 4.6 2.8 1.4
680 16 ×30 120 600 65 60 6.5 5.2 3.1 1.5
680 18 ×25 115 600 60 55 7.2 5.8 3.5 1.7
820 16 ×35 95 500 54 49 7.7 6.2 3.7 1.8
1000 16 ×39 80 410 45 41 8.9 7.2 4.3 2.1
1000 18 ×30 77 410 40 37 9.2 7.4 4.5 2.2
1200 20 ×29 55 320 35 33 10.0 8.0 4.9 2.4
1500 18 ×39 53 270 27 25 12.7 10.2 6.2 3.1
2200 21 ×39 39 185 21 20 14.3 11.5 7.0 3.5
2700 21 ×49 30 150 18 17 17.9 14.4 8.7 4.3
VR= 63 V DC
100 12 ×30 550 1900 160 150 4.2 3.3 2.0 1.0
150 14 ×25 380 1300 115 110 4.5 3.6 2.2 1.1
220 14 ×30 260 900 80 76 5.8 4.6 2.8 1.4
330 18 ×25 160 600 53 50 7.4 5.9 3.6 1.8
470 16 ×39 120 410 42 40 9.0 7.2 4.4 2.2
470 18 ×30 114 410 38 36 9.3 7.5 4.5 2.3
560 20 ×29 95 320 34 33 10.1 8.1 4.9 2.4
680 18 ×39 80 280 27 25 12.8 10.3 6.2 3.1
1000 21 ×39 56 200 21 20 14.3 11.5 7.0 3.5
1200 21 ×49 47 160 17 16 18.0 14.4 8.8 4.4
B41691, B41791
Low ESR up to 150 °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 TAunder ripple current operating conditions at VR
Useful life1)
depending on case temperature TCunder ripple current operating conditions at VR
B41691, B41791
Low ESR up to 150 °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
Equivalent series resistance ESR
versus frequency f
Typical behavior for 470 µF/63 V
Impedance Z
versus frequency f
Typical behavior for 470 µF/63 V
B41691, B41791
Low ESR up to 150 °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.
B41691, B41791
Low ESR up to 150 °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"
B41691, B41791
Low ESR up to 150 °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"
B41691, B41791
Low ESR up to 150 °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)
B41691, B41791
Low ESR up to 150 °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.
B41691, B41791
Low ESR up to 150 °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
