Aluminum Foil Preparation
The manufacturing process begins with the selection and preparation of high-quality aluminum foil.
The foil thickness, surface condition, and purity are controlled to ensure stable electrical characteristics and proper capacitance formation.
Electrochemical Etching
The aluminum foil undergoes electrochemical etching to increase its effective surface area.
This process enhances the capacitance value within a compact size and ensures consistent electrical performance across the series.
Element Winding
The etched aluminum foil, separator paper, and cathode foil are precisely wound together to form the capacitor element.
Proper winding tension and alignment are maintained to ensure uniform internal structure and electrical stability.
Electrolyte Impregnation
The wound elements are impregnated with electrolyte under controlled conditions.
The electrolyte formulation supports:
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Stable capacitance performance
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Defined leakage current levels
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Temperature resistance
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Long operational life
Sealing and Assembly
The impregnated element is assembled into an aluminum case and sealed securely.
This step protects the internal structure from environmental exposure and ensures long-term durability during operation.
Aging Process
After sealing, capacitors undergo an aging process under controlled voltage and temperature conditions.
This process stabilizes:
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Leakage current
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Capacitance value
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Dissipation factor
Aging ensures consistent performance before final inspection.
Electrical Testing & Inspection
Each capacitor is tested before shipment to verify electrical performance.
Testing includes:
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Capacitance measurement
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Leakage current verification
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Dissipation factor (tgδ)
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Impedance characteristics
Only products meeting defined specifications proceed to packaging and delivery.