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Design, Specifications are subject to change without notice.  Ask factory for technical specifications before purchase and/ or use.
Whenever a doubt about safety arises from this product, please inform us immediately for technical consulation without fail.

Aluminum Electrolytic Capacitor

 

EE17

 

Typical failure modes and their factors

Faliure mode         Faliure mechanism (internal phenomenon)       Production factor                  Application factor

Vent operates

Increase in

internal pressure

Increase in inter-

nal temperature

Overvoltage applied

Excessive ripple current

Reverse voltage applied

Severe charging-discharging

AC voltage applied

Used for a high temperature

Used for a long period of time

Stress applied to leads

Use of Halogenated solvent

Use of adhesive

Use of coating material

Defect of oxide film

Insufficient

electrolyte

Metal particles

in capacitor

Burr(s) on foil leads

Leads improperly

connected

Mechanical stress

Leads improperly connected

Corrosion

Infiltration of Cl

Insulation breakdown of film

or electrolytic paper

Electrolyte evapora-

tion

Deterioration of

oxide film

Reduced cathode

foil capacitance

Reduced anode foil

capacitance

Capacitance

reduction

tan 

increase

Leakage current

increase

Short circuit

Open

• •

Summary of Contents for HFQ EE26

Page 1: ...18 post test requirements at 20 C 6 3mmdia L L 16 L 1 0 max φd 0 05 14min min φD 0 5 max φ10 P 0 5 φD 0 5 max φ8 P 0 5 L 20 L 2 0 max Body Dia φD Body LengthL Lead Dia φd Lead space P 15 to25 30 to 40 0 45 0 5 0 5 0 6 0 6 0 6 0 8 0 8 0 8 1 5 2 2 5 3 5 5 5 5 7 5 7 5 4 5 6 3 8 10 12 5 16 18 Frequency correction factor for ripple current W V V DC 60 120 1k 10k 100k Frequency Hz 0 55 0 65 0 85 0 90 1 ...

Page 2: ...0 0 920 0 600 0 400 0 340 0 240 0 180 0 240 0 180 0 130 0 110 0 090 0 130 0 084 0 068 0 060 0 048 0 042 0 092 0 068 0 056 0 050 0 044 0 036 0 076 0 056 0 050 0 046 0 042 0 034 1 000 0 650 0 460 0 300 0 200 0 170 0 120 0 090 0 120 0 090 0 065 0 055 0 045 0 065 0 042 0 034 0 030 0 024 0 021 0 046 0 034 0 028 0 025 0 022 0 018 0 038 0 028 0 025 0 023 0 021 0 017 120 175 235 290 400 445 575 760 625 79...

Page 3: ...60 0 320 0 220 0 180 0 150 0 260 0 160 0 140 0 120 0 100 0 086 0 168 0 106 0 088 0 066 0 056 0 052 0 140 0 100 0 082 0 062 0 054 0 050 2 500 1 300 0 900 0 600 0 400 0 300 0 230 0 160 0 230 0 160 0 110 0 090 0 075 0 130 0 080 0 070 0 060 0 050 0 043 0 084 0 053 0 044 0 033 0 028 0 026 0 070 0 050 0 041 0 031 0 027 0 025 90 155 215 260 360 410 500 670 510 640 890 1040 1300 920 1200 1440 1680 1850 20...

Page 4: ...and Life Expectancy 1 Expected life is affected by operating temperature Generally each 10 C reduction in temperature will double the expected life Use capacitors at the lowest p o s s i bl e t e mperature below the maximum guaranteed temperature 2 If operating conditions exceed the maximum guaranteed limit rapid eIectrical parameter deterioration will occur and irreversible damage will result Che...

Page 5: ...age applied Excessive ripple current Reverse voltage applied Severe charging discharging AC voltage applied Used for a high temperature Used for a long period of time Stress applied to leads Use of Halogenated solvent Use of adhesive Use of coating material Defect of oxide film Insufficient electrolyte Metal particles in capacitor Burr s on foil leads Leads improperly connected Mechanical stress L...

Page 6: ...l 1 Capacitors Connected in Parallel The circuit resistance can closely approximate the series resistance of the capacitor causing an imbalance of ripple current loads with in the capacitors Careful design of wiring methods can minimize the possibility of excessive ripple currents applied to a capacitor 2 Capacitors Connected in Series Normal DC leakage current differences among capacitors can cau...

Page 7: ...ene or xylene and then exposed to high temperatures Always consider safety when designing equipment and circuits Plan for worst case failure modes such as short circuits and open circuits which could occur during use 1 Provide protection circuits and protection devices to allow safe failure modes 2 Design redundant or secondary circuits where possible to assure continued operation in case of main ...

Page 8: ...Cleaner P3 375 Telpen Cleaner EC 7R Clean thru 750H Clean thru 750L Clean thru 710M Techno Cleaner 219 Techno Care FRW 17 Techno Care FRW 1 Techno Care FRV 1 IPA isopropyl alcohol The use of ozone depleting cleaning agents are not recommended in the interest of protecting the environment 2 Avoid using the following solvent groups unless specifically allowed for in the specification Halogenated cle...

Page 9: ...the pressure relief vent of the capacitor operates immediately turn off the equipment and disconnect from the power source This will minimize additional damage caused by the vaporizing electrolyte 2 Avoid contact with the escaping electrolyte gas which can exceed 100 C temperatures If electrolyte or gas enters the eye immediately flush the eye with large amounts of water If electrolyte or gas is i...

Page 10: ...l to prevent explosion due to internal pressure rise Capacitors should be incinerated at high temperatures to prevent the release of toxic gases such as chlorine from the polyvinyl chloride sleeve etc Dispose of as solid waste L o c a l l a w s m a y h a v e s p e c i f i c d i s p o s a l requirements which must be followed The application guidelines above are taken from Technical Report EIAJ RCR...

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