Aluminum electrolytic capacitors
Axial-lead and soldering star capacitors
Series/Type: B41694, B41794
Date: November 2008
© EPCOS AG 2008. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
Applications
For automotive applications with high EMV requirementes
Features
Very high ripple current capability
Very low ESR at temperatures down to 55 °C
High vibration resistance
High reliability of 1000 h at up to 140 °C
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.
Construction
Charge/discharge-proof, polar
Aluminum case with insulating sleeve
Negative pole connected to case
Terminals
Axial leads, welded to ensure perfect electrical contact
Also available with soldering stars
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 B41694, B41794
Low ESR up to 140 °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%.
Specifications and characteristics in brief
Rated voltage VR25 and 40 V DC
Surge voltage VS1.15 VR
Rated capacitance CR330 ... 3900 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 26
29 38
30 21 24 29 34
39 33 38 45
49 50
soldering star 25 67
30 6 7 8 10
39 9 11
Useful life Requirements:
140 °C; VR; IAC,R > 1000 h ∆C/C ≤ ±30% of initial value
125 °C; VR; IAC, R > 3000 h ESR ≤3 times initial specified limit
85 °C; VR; IAC, max > 8000 h Ileak ≤initial specified limit
40 °C; VR; 2.1 IAC, R > 200000 h
Voltage endurance test Post test requirements:
125 °C; VR2000 h ∆C/C ≤ ±10% of initial value
ESR ≤1.3% initial specified limit
Ileak ≤initial specified limit
Vibration resistance test To IEC 60068-2-6, test Fc:
Displacement amplitude 1.5 mm, at 10 Hz ... 2 kHz,
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
B41694, B41794
Low ESR up to 140 °C
Page 3 of 16Please read Cautions and warnings and
Important notes at the end of this document.
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 ×39 16.5 ×40 11.7 180
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
B41694, B41794
Low ESR up to 140 °C
Page 4 of 16Please read Cautions and warnings and
Important notes at the end of this document.
Soldering star capacitors
Dimensional drawing
Dimensions, weights and packing units
d×l dmax ×Imax c±0.1 Approx. weight Packing units
mm mm mm g pcs.
12 ×30 13.5 ×32 12.5 5.4 480
14 ×25 15.5 ×27 14.5 6.1 480
14 ×30 15.5 ×32 14.5 7.2 480
16 ×30 17.5 ×32 16.5 9.4 300
16 ×39 17.5 ×41.5 16.5 12.2 200
18 ×30 19.5 ×32 18.5 11.8 300
18 ×39 19.5 ×41.5 18.5 15.4 200
B41694, B41794
Low ESR up to 140 °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
Case dimensions d ×l (mm)
CR(µF)
330 12 ×30
470 14 ×25 14 ×30
680 16 ×30
1000 16 ×30 18 ×30
1200 20 ×29
1500 16 ×39
18 ×30
18 ×39
1800 20 ×29
2200 18 ×39 21 ×39
2700 21 ×49
3300 21 ×39
3900 21 ×49
B41694, B41794
Low ESR up to 140 °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
∇Variant with different case dimensions
25 470 14 ×25 B41694A5477Q007 B41694A5477Q009 B41794A5477Q000
1000 16 ×30 B41694A5108Q007 B41694A5108Q009 B41794A5108Q000
1500 16 ×39 B41694A5158Q007 B41794A5158Q000
1500 ∇18 ×30 B41694C5158Q007 B41794C5158Q000
1800 20 ×29 B41694A5188Q007
2200 18 ×39 B41694A5228Q007 B41794A5228Q000
3300 21 ×39 B41694A5338Q007
3900 21 ×49 B41694A5398Q007
40 330 12 ×30 B41694A7337Q007 B41694A7337Q009 B41794A7337Q000
470 14 ×30 B41694B7477Q007 B41694B7477Q009 B41794B7477Q000
680 16 ×30 B41694A7687Q007 B41694A7687Q009 B41794A7687Q000
1000 18 ×30 B41694B7108Q007 B41794B7108Q000
1200 20 ×29 B41694A7128Q007
1500 18 ×39 B41694B7158Q007 B41794B7158Q000
2200 21 ×39 B41694A7228Q007
2700 21 ×49 B41694A7278Q007
B41694, B41794
Low ESR up to 140 °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
ESRtyp
100 Hz
20 °C
mΩ
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
85 °C
A
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
140 °C
A
∇Variant with different case dimensions
VR= 25 V DC
470 100 160 400 65 60 5.3 4.6 3.6 2.35 2.35
1000 50 80 200 38 35 7.3 6.3 4.9 3.2 3.2
1500 35 55 150 26 24 10.0 8.7 6.8 4.4 4.4
1500 ∇32 51 150 22 20 10.7 9.3 7.3 4.7 4.7
1800 27 44 130 19 19 11.3 9.9 7.7 5.0 5.0
2200 22 35 110 15 14 14.6 12.7 9.9 6.4 6.4
3300 17 27 80 13 13 15.7 13.6 10.7 6.9 6.9
3900 14 22 60 10 10 19.8 17.2 13.5 8.7 8.7
VR= 40 V DC
330 120 200 450 65 60 5.7 4.9 3.9 2.5 2.5
470 85 140 350 47 44 6.6 5.8 4.5 2.9 2.9
680 60 100 250 38 36 7.3 6.3 5.0 3.2 3.2
1000 40 65 180 23 22 10.6 9.2 7.2 4.6 4.6
1200 35 57 140 21 20 11.4 9.8 7.7 5.0 5.0
1500 27 45 120 16 15 14.5 12.6 9.9 6.3 6.3
2200 21 33 85 13 13 15.8 13.8 10.8 6.9 6.9
2700 17 27 65 11 11 19.9 17.3 13.5 8.7 8.7
B41694, B41794
Low ESR up to 140 °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, 5.3 Calculation of useful life" for an explanation on how to interpret the useful life
graphs.
Useful life
depending on ambient temperature TAunder ripple current operating conditions at VR1)
Useful life
depending on case temperature TCunder ripple current operating conditions at VR1)
B41694, B41794
Low ESR up to 140 °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 1000 µF/40 V
Impedance Z
versus frequency f
Typical behavior for 1000 µF/40 V
B41694, B41794
Low ESR up to 140 °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 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.
B41694, B41794
Low ESR up to 140 °C
Page 11 of 16Please 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"
B41694, B41794
Low ESR up to 140 °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"
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"
B41694, B41794
Low ESR up to 140 °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 Ableitstrom
Ileak,op Operating leakage current Ableitstrom bei Betrieb
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)
B41694, B41794
Low ESR up to 140 °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
Notes
All dimensions are given in mm.
B41694, B41794
Low ESR up to 140 °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, CSSP, CTVS, DSSP, MiniBlue, MKK,
MLSC, MotorCap, PCC, PhaseCap, PhaseMod, SIFERRIT, SIFI, SIKOREL, SilverCap,
SIMDAD, 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:
B41694A5477Q007 B41694A5108Q007 B41694A5158Q007 B41694B5158Q007 B41694A7337Q007
B41694A7477Q007 B41694A7687Q007 B41694A7108Q007 B41694A7158Q007 B41694A5477Q009
B41694A5108Q009 B41694A7337Q009 B41694A7477Q009 B41794A5477Q000 B41794A5108Q000
B41794A5158Q000 B41794B5158Q000 B41794A7337Q000 B41794A7477Q000 B41794A7687Q000
B41794A7108Q000 B41794A7158Q000
