电容检测方法(Reliability)

Vent operates Vent operates Capacitance reduction 量 Capacitance reduction 量 tan δincrease tan δincrease Leakage current increase 漏 流

Leakage current increase 漏 流 Short circuit 路Short circuit 路Open 路

Open 路Increase in internal pressure 力 Increase in internal pressure 力 Reduced anode foil capacitance 量 Reduced anode foil capacitance 量 Reduced cathode foil capacitance 量 Reduced cathode foil capacitance 量 Deterioration of oxide film 劣 Deterioration of oxide film 劣 Electrolyte evaporation Electrolyte evaporation Insulation breakdown of film or electrolytic paper Insulation breakdown of film or electrolytic paper Leads improperly connected 不 Leads improperly connected 不 Corrosion Corrosion Infiltration of Cl 異

Infiltration of Cl 異 Defect of oxide film

Defect of oxide film Insufficient electrolyte 量不 Insufficient electrolyte 量不 Metal particles in capacitor 金 粒

Metal particles in capacitor 金 粒 Burr(s) on foil or leads Burr(s) on foil or leads Leads improperly connected 不

Leads improperly connected 不 Mechanical stress Mechanical stress Over voltage applied

Over voltage applied Excessive ripple current 流

Excessive ripple current 流Reverse voltage applied

Reverse voltage applied Severe charging-discharging 度 Severe charging-discharging 度 AC voltage applied 流

AC voltage applied 流 Used for a high temperature Used for a high temperature Used for a long period of time Used for a long period of time Stress applied to leads

Stress applied to leads Use of Halogenated solvent Use of Halogenated solvent Use of adhesive Use of adhesive Increase in internal temperature 度 Increase in internal temperature 度 Application factor

Production factor Failure mechanism (internal phenomenon) Failure mode