Aluminum electrolytic capacitors
Axial-lead and soldering star capacitors
Series/Type: B41696, B41796
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.
Applications
Automotive electronics
Features
Very low ESR at temperature down to 55 °C
Compact design
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 ×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
Very low ESR 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%.
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 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 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:
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 limit3)
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 limit3)
Ileak ≤initial specified limit
Vibration resistance
test
To IEC 60068-2-6, test Fc:
Frequency range 10 Hz ... 2 kHz, displacement 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
B41696, B41796
Very low ESR 125 °C
Page 3 of 16Please read Cautions and warnings and
Important notes at the end of this document.
B41696, 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
B41696, B41796
Very low ESR 125 °C
Page 4 of 16Please read Cautions and warnings and
Important notes at the end of this document.
B41796, 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
B41696, B41796
Very low ESR 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
1200 16 ×35
1500 16 ×30 16 ×39
18 ×30
1800 18 ×25
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
Very low ESR 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
25 680 12 ×30 B41696A5687Q001 B41696A5687Q003 B41796A5687Q001
1000 14 ×25 B41696A5108Q001 B41696A5108Q003 B41796A5108Q001
1500 16 ×30 B41696A5158Q001 B41696A5158Q003 B41796A5158Q001
1800 18 ×25 B41696A5188Q001 B41796A5188Q001
2200 18 ×30 B41696B5228Q001 B41796B5228Q001
3300 18 ×39 B41696B5338Q001 B41796B5338Q001
3300 20 ×29 B41696C5338Q001
5000 21 ×39 B41696A5508Q001 B41796A5508Q001
6800 21 ×49 B41696A5688Q001 B41796A5688Q001
40 470 12 ×30 B41696A7477Q001 B41696A7477Q003 B41796A7477Q001
680 14 ×30 B41696A7687Q001 B41696A7687Q003 B41796A7687Q001
1000 16 ×30 B41696A7108Q001 B41696A7108Q003 B41796A7108Q001
1200 16 ×35 B41696A7128Q001 B41796A7128Q001
1500 16 ×39 B41696A7158Q001 B41796A7158Q001
1500 18 ×30 B41696B7158Q001 B41796B7158Q001
2200 18 ×39 B41696B7228Q001 B41796B7228Q001
2200 20 ×29 B41696C7228Q001
3300 21 ×39 B41696A7338Q001 B41796A7338Q001
4400 21 ×49 B41696A7448Q001 B41796A7448Q001
B41696, B41796
Very low ESR 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
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
40 °C
A
IAC,max
10 kHz
105 °C
A
IAC,R
10 kHz
125 °C
A
IAC,max
10 kHz
125 °C
A
VR= 25 V DC
680 12 ×30 160 1000 85 80 5.6 3.4 1.7 1.7
1000 14 ×25 115 650 65 62 5.8 3.5 1.75 1.75
1500 16 ×30 80 450 45 43 7.4 4.5 2.25 2.25
1800 18 ×25 65 380 36 34 9.0 5.5 2.7 2.7
2200 18 ×30 55 300 28 27 11.0 6.7 3.4 3.4
3300 18 ×39 36 200 19 18 15.2 9.3 4.6 4.6
3300 20 ×29 38 200 22 21 12.3 7.5 3.7 3.7
5000 21 ×39 25 150 15 15 17.2 10.5 5.3 5.3
6800 21 ×49 19 110 11 11 22.0 13.5 6.7 6.7
VR= 40 V DC
470 12 ×30 170 1000 70 68 6.0 3.6 1.8 1.8
680 14 ×30 135 600 53 51 7.1 4.3 2.2 2.2
1000 16 ×30 85 450 42 40 8.0 4.8 2.45 2.45
1200 16 ×35 70 370 35 33 9.5 5.8 2.9 2.9
1500 16 ×39 58 300 29 28 11.0 6.7 3.35 3.35
1500 18 ×30 54 300 25 24 11.5 7.0 3.5 3.5
2200 18 ×39 38 200 17 16 15.7 9.6 4.8 4.8
2200 20 ×29 40 200 20 20 12.4 7.6 3.8 3.8
3300 21 ×39 27 140 14 14 17.3 10.5 5.3 5.3
4400 21 ×49 21 110 11 11 21.5 13.2 6.6 6.6
B41696, B41796
Very low ESR 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 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
B41696, B41796
Very low ESR 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
Very low ESR 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 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.
B41696, B41796
Very low ESR 125 °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"
B41696, B41796
Very low ESR 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"
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"
B41696, B41796
Very low ESR 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 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)
B41696, B41796
Very low ESR 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
Note
All dimensions are given in mm.
B41696, B41796
Very low ESR 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, 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:
B41696A5687Q007 B41696A5108Q007 B41696A5158Q007 B41696A5228Q007 B41696A5338Q007
B41696A7687Q007 B41696A7108Q007 B41696A7158Q007 B41696A5687Q009 B41696A5108Q009
B41696A5158Q009 B41696A7477Q009 B41696A7687Q009 B41696A7108Q009
