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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 stressLeads 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 d increase
Leakage current
increase
Short circuit
Open
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Mar. 2005