Aluminum electrolytic capacitors
Axial-lead and soldering star capacitors,very high ripple current – up to 150 °C
Series/Type: B41687, B41787
Date: May 2020
© TDK Electronics AG 2020. Reproduction, publication and dissemination of this publication, enclosures heretoand the information contained therein without TDK Electronics' prior express consent is prohibited.
ApplicationsAutomotive electronics
FeaturesVery high ripple current capability, optimized for heat-sinkapplicationsVibration stability up to 60 g available upon requestUseful life, 4000 h at up to 125 °C, 63 V DCLow ESR at high frequencySIKOREL design storage for up to 15 years at atemperature of up to 35 °CRoHS-compatible
ConstructionCharge/discharge-proof, polarAluminum case without PET sleeveNegative pole connected to caseVersion with PET sleeve available upon request
TerminalsAxial leads, welded to capacitor case and cover discSoldering star option for upright mounting on PCB or weldingto busbarAlternative axial-lead design with double-sided plates forhorizontal mounting available upon request
Taping and packingAxial-lead capacitors will be delivered in pallet packageCapacitors with d × l ≤ 16 × 39 mm are also available tapedon reelSoldering star capacitors are packed in blister trays
Axial-lead and soldering star capacitors B41687, B41787
Very high ripple current up to 150 °C
Page 2 of 16Please read Cautions and warnings andImportant 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 °C4) Refer to chapter "General technical information, 2.3 AEC-Q200 standard" for further details.
Specifications and characteristics in brief
Rated voltage VR 63 V DCSurge voltage VS 1.15 VRRated capacitance CR 360 ... 1800 μFCapacitance tolerance 10/+30% QLeakage current Ileak(5 min, 20 °C)Self-inductance ESL1) Diameter d (mm) 16 18 21
Terminals Length l(mm)
Approx. ESL (nH)
axial 25 26 3030 29 3435 31 3639 33 3849
soldering star 25 7 830 8 10 1135 9 10.5 1239 9 11 1349 14
Useful life2) Requirements:TA = 125 °C; VR; IAC,R > 4000 h ΔC/C ≤ 30% of initial valueTC = 125 °C; VR; IAC,max > 2000 h Ileak ≤ initial specified limit
ESR ≤ 3 times initial specified limit3)
Voltage endurance test Post test requirements:125 °C; VR 3000 h for VR = 63 V DC ΔC/C
ESRIleak
≤ 10% of initial value≤ 1.3 times initial specified limit3)
≤ initial specified limitVibration resistance test To IEC 60068-2-6, test Fc:
Frequency range 10 Hz ... 2 kHz, displacement amplitude max. 1.5mm,acceleration max. 20 g, duration 3 × 2 h.Capacitor rigidly clamped by the aluminum case e.g. using ourstandard fixture.
IEC climatic category To IEC 60068-1: 55/125/56 ( 55 °C/+125 °C/56 days damp heat test)Sectional specification IEC 60384-4Reference standard AEC-Q2004)
B41687, B41787
Very high ripple current up to 150 °C
Page 3 of 16Please read Cautions and warnings andImportant notes at the end of this document.
B41687, Axial-lead capacitors
Dimensional drawing
Dimensions, weights and packing units
d × l dmax × Imax Approx. weight Packing units (pcs.)mm mm g Pallet Reel16 × 25 16.3 × 25.4 7.4 180 25016 × 30 16.3 × 30.4 8.9 180 25016 × 35 16.3 × 35.4 10.4 180 25016 × 39 16.3 × 39.9 11.7 180 25018 × 25 18.3 × 25.4 9.3 16018 × 30 18.3 × 30.4 11.1 16018 × 35 18.3 × 35.4 12.8 16018 × 39 18.3 × 39.9 14.7 160
B41687, B41787
Very high ripple current up to 150 °C
Page 4 of 16Please read Cautions and warnings andImportant notes at the end of this document.
B41787, Soldering star capacitors
Dimensional drawings
Mounting holes d = 16 mm ... 18 mm Mounting holes d = 21 mm
Dimensions, weights and packing units
d × l dmax × Imax c ±0.1 e ±0.1 Approx. weight Packing unitsmm mm mm mm g pcs.
16 × 25 17.5 × 27 16.5 3.0 7.9 30016 × 30 17.5 × 32 16.5 3.0 9.4 30016 × 35 17.5 × 37 16.5 3.0 10.9 20016 × 39 17.5 × 41.5 16.5 3.0 12.2 20018 × 25 19.5 × 27 18.5 3.0 9.9 30018 × 30 19.5 × 32 18.5 3.0 11.8 30018 × 35 19.5 × 37 18.5 3.0 13.2 20018 × 39 19.5 × 41.5 18.5 3.0 15.4 20021 × 30 22.5 × 32 21.5 3.5 17.5 46821 × 35 22.5 × 37 21.5 3.5 18.3 32421 × 39 22.5 × 41.5 21.5 3.5 21.0 32421 × 49 22.5 × 51.5 21.5 3.5 26.0 264
B41687, B41787
Very high ripple current up to 150 °C
Page 5 of 16Please read Cautions and warnings andImportant notes at the end of this document.
Overview of available types
VR (V DC) 63
Case dimensions d × l (mm)CR (μF)360 16 × 25470 18 × 25510 16 × 30620 16 × 35
18 × 30750 16 × 39820 18 × 35910 18 × 39
21 × 301100 21 × 351300 21 × 391800 21 × 49
B41687, B41787
Very high ripple current up to 150 °C
Page 6 of 16Please read Cautions and warnings andImportant notes at the end of this document.
1) Maximum ripple current at 125 °C capacitor case temperature TC (measurement at aluminum case surface), when mounted to a heatsink. Further details available upon request.
2) To achieve the maximum listed current, special care must be taken in the connection of the capacitor to the circuit as it depends onuser assembly.
Case dimensions and ordering codes
CR100 Hz20 °CμF
Case dimensionsd × l
mm
Ordering codeAxial pallet
Ordering codeAxial reel
Ordering codeSoldering star
VR = 63 V DC
360 16 × 25 B41687A8367Q001 B41687A8367Q003 B41787A8367Q001470 18 × 25 B41687A8477Q001 B41787A8477Q001510 16 × 30 B41687A8517Q001 B41687A8517Q003 B41787A8517Q001620 16 × 35 B41687A8627Q001 B41687A8627Q003 B41787A8627Q001620 18 × 30 B41687B8627Q001 B41787B8627Q001750 16 × 39 B41687A8757Q001 B41687A8757Q003 B41787A8757Q001820 18 × 35 B41687A8827Q001 B41787A8827Q001910 18 × 39 B41687A8917Q001 B41787A8917Q001910 21 × 30 B41787B8917Q0011100 21 × 35 B41787A8118Q0011300 21 × 39 B41787A8138Q0011800 21 × 49 B41787A8188Q001
Technical data
CR100 Hz20 °CμF
Case dimensionsd × l
mm
ESRmax100 Hz20 °CmΩ
ESRmax100 Hz40 °C
mΩ
ESRmax10 kHz20 °CmΩ
IAC,R10 kHzTA 125 °CA
IAC,max1) 2)
10 kHzTC 125 °CA
VR = 63 V DC
360 16 × 25 173 652 43 3.3 11.8470 18 × 25 132 499 33 4.1 14.9510 16 × 30 124 461 33 4.2 13.9620 16 × 35 102 379 26 5.0 15.7620 18 × 30 100 379 25 5.1 17.7750 16 × 39 84 314 23 5.6 17.1820 18 × 35 76 287 20 6.2 19.9910 18 × 39 69 258 18 6.9 21.6910 21 × 30 71 259 19 6.0 23.61100 21 × 35 58 215 16 7.0 26.31300 21 × 39 50 182 14 8.0 28.41800 21 × 49 36 132 11 10.0 32.2
B41687, B41787
Very high ripple current up to 150 °C
Page 7 of 16Please read Cautions and warnings andImportant 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 under ripple current operating conditions at VR
Useful life1)
depending on case temperature TC under ripple current operating conditions at VR
*) Maximum ripple current IAC under continous operation is limited to 35 A.
B41687, B41787
Very high ripple current up to 150 °C
Page 8 of 16Please read Cautions and warnings andImportant notes at the end of this document.
Frequency factor of permissible ripplecurrent IAC versus frequency f
Frequency characteristics of ESRTypical behavior
Equivalent series resistance ESR versusfrequency fTypical behavior for 910 μF/63 V
Impedance Z versusfrequency fTypical behavior for 910 μF/63 V
B41687, B41787
Very high ripple current up to 150 °C
Page 9 of 16Please read Cautions and warnings andImportant notes at the end of this document.
Cautions and warnings
Personal safety
The electrolytes used have been optimized both with a view to the intended application and withregard to health and environmental compatibility. They do not contain any solvents that aredetrimental to health, e.g. dimethyl formamide (DMF) or dimethyl acetamide (DMAC).Furthermore, some of the high-voltage electrolytes used are self-extinguishing.
As far as possible, we do not use any dangerous chemicals or compounds to produce operatingelectrolytes, although in exceptional cases, such materials must be used in order to achievespecific physical and electrical properties because no alternative materials are currently known.We do, however, restrict the amount of dangerous materials used in our products to an absoluteminimum.
Materials and chemicals used in our aluminum electrolytic capacitors are continuously adaptedin compliance with the TDK Electronics Corporate Environmental Policy and the latestEU regulations and guidelines such as RoHS, REACH/SVHC, GADSL, and ELV.
MDS (Material Data Sheets) are available on our 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 our electrolytes upon request.
Nevertheless, the following rules should be observed when handling aluminum electrolyticcapacitors: No electrolyte should come into contact with eyes or skin. If electrolyte does comeinto contact with the skin, wash the affected areas immediately with running water. If the eyesare affected, rinse them for 10 minutes with plenty of water. If symptoms persist, seek medicaltreatment. Avoid inhaling electrolyte vapor or mists. Workplaces and other affected areas shouldbe well ventilated. Clothing that has been contaminated by electrolyte must be changed andrinsed in water.
B41687, B41787
Very high ripple current up to 150 °C
Page 10 of 16Please read Cautions and warnings andImportant notes at the end of this document.
Product safety
The table below summarizes the safety instructions that must be observed without fail. A detaileddescription can be found in the relevant sections of seperate file chapter "General technical infor-mation".
Topic Safety information Referencechapter "Generaltechnical information"
Polarity Make sure that polar capacitors are connectedwith the right polarity.
1"Basic construction ofaluminum electrolyticcapacitors"
Reverse voltage Voltages of opposite polarity should be preventedby connecting a diode.
3.1.6"Reverse voltage"
Mountingposition of screw-terminal capacitors
Screw terminal capacitors must not be mountedwith terminals facing down unless otherwisespecified.
11.1."Mounting positions ofcapacitors with screwterminals"
Robustness ofterminals
The following maximum tightening torques mustnot be exceeded when connecting screwterminals:M5: 2.5 NmM6: 4.0 Nm
11.3"Mounting torques"
Mounting ofsingle-endedcapacitors
The internal structure of single-ended capacitorsmight be damaged if excessive force is applied tothe lead wires.Avoid any compressive, tensile or flexural stress.Do not move the capacitor after soldering to PCboard.Do not pick up the PC board by the solderedcapacitor.Do not insert the capacitor on the PC board with ahole space different to the lead space specified.
11.4"Mountingconsiderations forsingle-ended capacitors"
Soldering Do not exceed the specified time or temperaturelimits during soldering.
11.5"Soldering"
Soldering,cleaning agents
Do not allow halogenated hydrocarbons to comeinto contact with aluminum electrolytic capacitors.
11.6"Cleaning agents"
Upper categorytemperature
Do not exceed the upper category temperature. 7.2"Maximum permissibleoperating temperature"
Passiveflammability
Avoid external energy, e.g. fire. 8.1"Passive flammability"
B41687, B41787
Very high ripple current up to 150 °C
Page 11 of 16Please read Cautions and warnings andImportant notes at the end of this document.
Topic Safety information Referencechapter "Generaltechnical information"
Activeflammability
Avoid overload of the capacitors. 8.2"Active flammability"
Maintenance Make periodic inspections of the capacitors.Before the inspection, make sure that the powersupply is turned off and carefully discharge thecapacitors.Do not apply excessive mechanical stress to thecapacitor terminals when mounting.
10"Maintenance"
Storage Do not store capacitors at high temperatures orhigh humidity. Capacitors should be stored at+5 to +35 °C and a relative humidity of ≤ 75%.
7.3"Shelf life and storageconditions"
Referencechapter "Capacitors withscrew terminals"
Breakdown strengthof insulatingsleeves
Do not damage the insulating sleeve, especiallywhen ring clips are used for mounting.
"Screw terminalsaccessories"
Display of ordering codes for TDK Electronics products
The ordering code for one and the same product can be represented differently in data sheets,data books, other publications, on the company website, or in order-related documents such asshipping notes, order confirmations and product labels. The varying representations of the order-ing codes are due to different processes employed and do not affect the specifications of the re-spective products.Detailed information can be found on the Internet underwww.tdk-electronics.tdk.com/orderingcodes.
B41687, B41787
Very high ripple current up to 150 °C
Page 12 of 16Please read Cautions and warnings andImportant notes at the end of this document.
Symbols and terms
Symbol English German
C Capacitance Kapazität
CR Rated capacitance Nennkapazität
CS Series capacitance Serienkapazität
CS,T Series capacitance at temperature T Serienkapazität bei Temperatur T
Cf Capacitance 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
ESRf Equivalent series resistance atfrequency f
Ersatzserienwiderstand bei Frequenz f
ESRT Equivalent series resistance attemperature T
Ersatzserienwiderstand bei Temperatur T
f Frequency Frequenz
I Current Strom
IAC Alternating current (ripple current) Wechselstrom
IAC,RMS Root-mean-square value of alternatingcurrent
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
Ileak Leakage current Reststrom
Ileak,op Operating leakage current Betriebsreststrom
l Case length, nominal dimension Gehäuselänge, Nennmaß
lmax Maximum case length (withoutterminals and mounting stud)
Maximale Gehäuselänge (ohne Anschlüsseund Gewindebolzen)
R Resistance Widerstand
Rins Insulation resistance Isolationswiderstand
Rsymm Balancing resistance Symmetrierwiderstand
T Temperature Temperatur
ΔT Temperature difference TemperaturdifferenzTA Ambient temperature Umgebungstemperatur
TC Case temperature Gehäusetemperatur
TB Capacitor base temperature Temperatur des Gehäusebodens
t Time Zeit
Δt Period Zeitraumtb Service life (operating hours) Brauchbarkeitsdauer (Betriebszeit)
B41687, B41787
Very high ripple current up to 150 °C
Page 13 of 16Please read Cautions and warnings andImportant notes at the end of this document.
Symbol English German
V Voltage Spannung
VF Forming voltage Formierspannung
Vop Operating voltage Betriebsspannung
VR Rated voltage, DC voltage Nennspannung, Gleichspannung
VS Surge voltage Spitzenspannung
XC Capacitive reactance Kapazitiver Blindwiderstand
XL Inductive reactance Induktiver Blindwiderstand
Z Impedance Scheinwiderstand
ZT Impedance at temperature T Scheinwiderstand bei Temperatur T
tan δ Dissipation factor Verlustfaktorλ Failure rate Ausfallrateε0 Absolute permittivity Elektrische Feldkonstanteεr Relative permittivity Dielektrizitätszahlω Angular velocity; 2 π f Kreisfrequenz; 2 π f
Note
All dimensions are given in mm.
B41687, B41787
Very high ripple current up to 150 °C
Page 14 of 16Please read Cautions and warnings andImportant 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. Wenevertheless expressly point out that such statements cannot be regarded as bindingstatements about the suitability of our products for a particular customer application.As a rule, we are either unfamiliar with individual customer applications or less familiar withthem than the customers themselves. For these reasons, it is always ultimately incumbent onthe customer to check and decide whether a product with the properties described in theproduct specification is suitable for use in a particular customer application.
2. We also point out that in individual cases, a malfunction of electronic components orfailure before the end of their usual service life cannot be completely ruled out in thecurrent state of the art, even if they are operated as specified. In customer applicationsrequiring a very high level of operational safety and especially in customer applications inwhich the malfunction or failure of an electronic component could endanger human life orhealth (e.g. in accident prevention or lifesaving systems), it must therefore be ensured bymeans 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 bythird 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.tdk-electronics.tdk.com/material). Should you haveany more detailed questions, please contact our sales offices.
5. We constantly strive to improve our products. Consequently, the products described in thispublication may change from time to time. The same is true of the corresponding productspecifications. Please check therefore to what extent product descriptions and specificationscontained in this publication are still applicable before or when you place an order. We alsoreserve the right to discontinue production and delivery of products. Consequently, wecannot guarantee that all products named in this publication will always be available. Theaforementioned 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 our GeneralTerms and Conditions of Supply.
Important notes
Page 15 of 16
7. Our manufacturing sites serving the automotive business apply the IATF 16949standard. The IATF certifications confirm our compliance with requirements regarding thequality management system in the automotive industry. Referring to customer requirementsand customer specific requirements (“CSR”) TDK always has and will continue to have thepolicy of respecting individual agreements. Even if IATF 16949 may appear to support theacceptance of unilateral requirements, we hereby like to emphasize that only requirementsmutually agreed upon can and will be implemented in our Quality Management System.For clarification purposes we like to point out that obligations from IATF 16949 shall onlybecome legally binding if individually agreed upon.
8. The trade names EPCOS, CeraCharge, CeraDiode, CeraLink, CeraPad, CeraPlas, CSMP,CTVS, DeltaCap, DigiSiMic, ExoCore, FilterCap, FormFit, LeaXield, MiniBlue, MiniCell, MKD,MKK, MotorCap, PCC, PhaseCap, PhaseCube, PhaseMod, PhiCap, PowerHap, PQSine,PQvar, SIFERRIT, SIFI, SIKOREL, SilverCap, SIMDAD, SiMic, SIMID, SineFormer, SIOV,ThermoFuse, WindCap are trademarks registered or pending in Europe andin other countries. Further information will be found on the Internet atwww.tdk-electronics.tdk.com/trademarks.
Release 2018-10
Important notes
Page 16 of 16
