Aluminum electrolytic capacitors
Axial-lead and soldering star capacitors
Series/Type: B41696, B41796
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 compact design in automotive applications
Features
High ripple current capability
High vibration resistance
Very low ESR at temperature down to 55 °C
Compact and small design
High reliability
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 ×I≤16 ×30 mm are also available taped
on reel.
Soldering star capacitors are packed in cardboard.
Axial-lead and soldering star capacitors B41696, B41796
Low ESR, compact 125 °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 CR470 ... 6800 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:
125 °C; VR; IAC,R > 3000 h ∆C/C ≤ ±30% of initial value
85 °C; VR; IAC,max > 15000 h ESR ≤3 times initial specified limit
40 °C; VR; 2.9 IAC,R > 200000 h Ileak ≤initial specified limit
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
B41696, B41796
Low ESR, compact 125 °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
B41696, B41796
Low ESR, compact 125 °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
B41696, B41796
Low ESR, compact 125 °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)
470 12 ×30
680 12 ×30 14 ×30
1000 14 ×25 16 ×30
1500 16 ×30 16 ×39
18 ×30
2200 18 ×30 18 ×39
20 ×29
3300 18 ×39
20 ×29
21 ×39
4400 21 ×49
5000 21 ×39
6800 21 ×49
B41696, B41796
Low ESR, compact 125 °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
25 680 12 ×30 B41696A5687Q007 B41696A5687Q009 B41796A5687Q000
1000 14 ×25 B41696A5108Q007 B41696A5108Q009 B41796A5108Q000
1500 16 ×30 B41696A5158Q007 B41696A5158Q009 B41796A5158Q000
2200 18 ×30 B41696B5228Q007 B41796B5228Q000
3300 18 ×39 B41696B5338Q007 B41796B5338Q000
3300 ∇20 ×29 B41696C5338Q007
5000 21 ×39 B41696A5508Q007
6800 21 ×49 B41696A5688Q007
40 470 12 ×30 B41696A7477Q007 B41696A7477Q009 B41796A7477Q000
680 14 ×30 B41696A7687Q007 B41696A7687Q009 B41796A7687Q000
1000 16 ×30 B41696A7108Q007 B41696A7108Q009 B41796A7108Q000
1500 16 ×39 B41696A7158Q007 B41796A7158Q000
1500 ∇18 ×30 B41696B7158Q007 B41796B7158Q000
2200 18 ×39 B41696B7228Q007 B41796B7228Q000
2200 ∇20 ×29 B41696C7228Q007
3300 21 ×39 B41696A7338Q007
4400 21 ×49 B41696A7448Q007
B41696, B41796
Low ESR, compact 125 °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
40 °C
A
IAC,max
10 kHz
85 °C
A
IAC,max
10 kHz
105 °C
A
IAC,R
10 kHz
125 °C
A
IAC,max
10 kHz
125 °C
A
∇Variant with different case dimensions
VR= 25 V DC
680 95 160 1000 85 80 5.6 4.4 3.4 1.7 1.7
1000 70 115 650 65 62 5.8 4.6 3.5 1.75 1.75
1500 50 80 450 45 43 7.4 5.7 4.5 2.25 2.25
2200 32 55 300 28 27 11.0 8.7 6.7 3.4 3.4
3300 23 36 200 19 18 15.2 12.0 9.3 4.6 4.6
3300 ∇24 38 200 22 21 12.3 9.7 7.5 3.7 3.7
5000 15 25 150 15 15 17.2 13.6 10.5 5.3 5.3
6800 12 19 110 11 11 22.0 17.4 13.5 6.7 6.7
VR= 40 V DC
470 105 170 1000 70 68 6.0 4.7 3.6 1.8 1.8
680 80 135 600 53 51 7.1 5.6 4.3 2.2 2.2
1000 52 85 450 42 40 8.0 6.3 4.8 2.45 2.45
1500 36 58 300 29 28 11.0 8.7 6.7 3.35 3.35
1500 ∇33 54 300 25 24 11.5 9.1 7.0 3.5 3.5
2200 23 38 200 17 16 15.7 12.4 9.6 4.8 4.8
2200 ∇24 40 200 20 20 12.4 9.8 7.6 3.8 3.8
3300 17 27 140 14 14 17.3 13.7 10.5 5.3 5.3
4400 13 21 110 11 11 21.5 17.0 13.2 6.6 6.6
B41696, B41796
Low ESR, compact 125 °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)
B41696, B41796
Low ESR, compact 125 °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 2200 µF/40 V
Impedance Z
versus frequency f
Typical behavior for 2200 µF/40 V
B41696, B41796
Low ESR, compact 125 °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.
B41696, B41796
Low ESR, compact 125 °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"
B41696, B41796
Low ESR, compact 125 °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"
B41696, B41796
Low ESR, compact 125 °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)
B41696, B41796
Low ESR, compact 125 °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.
B41696, B41796
Low ESR, compact 125 °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
