Panasonic EE23 dimensions Typical failure modes and their factors, Faliure mode, EE17

Aluminum Electrolytic Capacitor

■ Typical failure modes and their factors
Faliure mode	Faliure mechanism (internal phenomenon)								Production factor	Application factor
										Overvoltage applied
Vent operates		Increase in	•	Increase in inter-				•
		internal pressure		nal temperature
									•	Excessive ripple current
Capacitance		Reduced anode foil
reduction		capacitance								Reverse voltage applied
									•
•		•		•	•			•
tan d increase		Reduced cathode
		foil capacitance							•	Severe charging-discharging
										AC voltage applied
								•	Defect of oxide film
								•	•	Used for a high temperature
		Deterioration of			•			•	Insufficient
		oxide film							electrolyte
Leakage current	•	•								Used for a long period of time
increase
		Electrolyte evapora-
							•		Metal particles
		tion
									in capacitor
							•	•		Stress applied to leads
Short circuit		Insulation breakdown of film				•
		or electrolytic paper							Burr(s) on foil leads
									Leads improperly
									connected
		Leads improperly connected					•		Mechanical stress
Open	•	•
										Use of Halogenated solvent
		Corrosion		Infiltration of Cl					•
										Use of adhesive
										Use of coating material

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.

– EE17 –

Mar. 2005