Cathode foil

Aluminum foil for aluminum electrolytic capacitor cathodes. Etched, formed and high-purity cathode foils are grouped separately with material, thickness and specific-capacitance parameters.

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Series and specifications

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Etched cathode foil

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Etched cathode foil C series — specifications

Etched cathode foil C series — specifications
Raw foil materials	Thickness (μm)	Specifications	Capacitance (μF/cm²) Cap≥−10%	Tensile force TS (≥N/cm)	Bending endurance BS (≥cycle)
Aluminum-manganese alloy; aluminum content of plain foil Al≥98.2%	18±2	WF18C01	80	16	70
	20±2	WF20C01	90	17	70
	20±2	WF20C02	110	17	70
	27±3	WF30C01	120	19	80
	27±3	WF30C02	200	18	75
	38±4	WF40C02	250	19	90
		WF40C03	310	19	90
		WF40C04	350	19	85
		WF40C05	400	18	80
	45±5	WF50C02	250	20	100
		WF50C04	350	20	95
		WF50C05	400	19	90
		WF50C06	450	19	85
		WF50C07	500	18	80
		WF50C08	550	18	80

High-strength etched cathode foil A series — specifications

High-strength etched cathode foil A series — specifications
Raw foil materials	Thickness (μm)	Specifications	Capacitance (μF/cm²) Cap≥−10%	Tensile force TS (≥N/cm)	Bending endurance BS (≥cycle)	Recommended slit width (≥mm)
Aluminum-manganese alloy; aluminum content of plain foil Al≥98.2%	22±2	WF20C01A	100	19	90	5
	30±3	WF30C02A	200	20	100	4
	40±4	WF40C03A	350	21	110	3
	48±5	WF50C05A	400	22	120	2.2
		WF50C06A	450	22	120	2.2
		WF50C07A	500	22	120	2.2

Etched cathode foil CD series — specifications

Etched cathode foil CD series — specifications
Raw foil materials	Thickness (μm)	Specifications	Capacitance (μF/cm²) Cap≥−10%	Tensile force TS (≥N/cm)	Bending endurance BS (≥cycle)
Unalloyed series; aluminum content of plain foil Al≥99.4%	20±2	WF20CD01	90	13	60
	30±3	WF30CD01	120	14	60
	40±4	WF40CD04	350	15	65
	45±5	WF50CD04	350	18	80
		WF50CD05	400	17	75
		WF50CD06	450	17	70

Etched cathode foil CT series — specifications

Etched cathode foil CT series — specifications
Raw foil materials	Thickness (μm)	Specifications	Capacitance (μF/cm²) Cap≥−10%	Tensile force TS (≥N/cm)	Bending endurance BS (≥cycle)
Aluminum-copper alloy series; aluminum content of plain foil Al≥99.55%	22±2	WF20CT01	90	12	60
	30±3	WF30CT01	120	14	60
	40±4	WF40CT03	310	15	65
	45±5	WF50CT04	350	18	80
		WF50CT05	400	17	75
		WF50CT06	450	17	70
	48±5	WF50CT05A	400	19	90

Formed cathode foil

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Formed cathode foil CL series — specifications

Formed cathode foil CL series — specifications
Raw foil materials	Thickness (μm)	Specifications	Capacitance (μF/cm²) Cap≥−10%	Tensile force TS (≥N/cm)	Bending endurance BS (≥cycle)
Aluminum-manganese alloy; aluminum content of plain foil Al≥98.2%	16±2	WF16C01-3VF	40	15	60
	20±2	WF20CL01-2VF	70	17	70
		WF20CL01-3VF	60	17	70
		WF20CL01-4VF	50	17	70
	27±3	WF30CL01-2VF	120	17	80
		WF30CL01-3VF	100	17	80
		WF30CL01-4VF	80	17	80
	38±4	WF40CL01-2VF	200	18	90
		WF40CL02-2VF	250	18	90
		WF40CL02-3VF	150	18	90
	45±5	WF50CL06-1.2VF	350	19	90
		WF50CL05-1.5VF	320	19	90
		WF50CL04-2.0VF	280	19	90
		WF50CL03-2.5VF	220	19	90
	48±5	WF50CL06A-1.2VF	350	22	110
	48±5	WF50CL04A-2.0VF	270	22	110

Formed cathode foil CD series — specifications

Formed cathode foil CD series — specifications
Raw foil materials	Thickness (μm)	Specifications	Capacitance (μF/cm²) Cap≥−10%	Tensile force TS (≥N/cm)	Bending endurance BS (≥cycle)
Unalloyed series; aluminum content of plain foil Al≥99.4%	21±2	WF20CD01-3VF	50	14	70
	21±2	WF20CD01-4VF	40	14	70
	30±3	WF30CD01-3VF	60	15	70
	40±4	WF40CD04-2VF	250	16	70
	40±4	WF40CD03-3VF	150	16	70
	45±5	WF5CD06-1.2VF	350	17	70
		WF5CD05-1.5VF	320	17	70
		WF5CD04-2.0VF	280	17	70
		WF5CD03-2.5VF	220	17	70
		WF5CD02-3.0VF	180	17	70
	48±5	WF5CD04A-2VF	250	19	90

Formed cathode foil CT series — specifications

Formed cathode foil CT series — specifications
Raw foil materials	Thickness (μm)	Specifications	Capacitance (μF/cm²) Cap≥−10%	Tensile force TS (≥N/cm)	Bending endurance BS (≥cycle)
Aluminum-copper alloy series; aluminum content of plain foil Al≥99.55%	21±2	WF20CT01-2VF	40	12	60
	21±2	WF20CT01-3VF	35	12	60
	30±3	WF30CT01-2.5VF	65	14	60
	30±3	WF30CT01-4VF	50	14	60
	40±4	WF40CT02-3VF	150	15	60
	45±5	WF50CT04-2VF	250	17	70
	45±5	WF50CT03-3VF	150	17	70
	48±5	WF50CT04A-2VF	250	19	90

High-purity cathode foil

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High-purity etched pure aluminum cathode foil — specifications

High-purity etched pure aluminum cathode foil — specifications
Raw foil materials	Thickness (μm)	Specifications	Capacitance (μF/cm²) Cap≥−10%	Tensile force TS (≥N/cm)	Bending endurance BS (≥cycle)
Pure aluminum series; aluminum content of plain foil Al≥99.8%	22±2	WF20CP090	90	19	60
	22±2	WF20CP110	110	19	60
	30±3	WF30CP090	90	20	60
		WF30CP110	110	20	60
		WF30CP140	140	20	60
	50±5	WF50CP250	250	20	60
		WF50CP300	300	20	60
		WF50CP350	350	20	60

High-purity formed cathode foil, etched pure aluminum — specifications

High-purity formed cathode foil, etched pure aluminum — specifications
Raw foil materials	Thickness (μm)	Specifications	Capacitance (μF/cm²) Cap≥−10%	Tensile force TS (≥N/cm)	Bending endurance BS (≥cycle)
Pure aluminum series; aluminum content of plain foil Al≥99.8%	22±2	WF20CP050-2VF	50	18	60
		WF20CP040-3VF	40	18	60
		WF20CP030-4VF	30	18	60
	30±3	WF30CP060-2VF	60	19	60
		WF30CO050-3VF	50	19	60
		WF30CP040-4VF	40	19	60
	50±5	WF50CP050-2VF	150	19	60
		WF50CP050-3VF	120	19	60
		WF50CP060-6VF	60	19	60

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Cathode foil specifications.

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Cathode foil

Series and specifications

Etched cathode foil

Formed cathode foil

High-purity cathode foil

Further confirmationCathode foil specifications.

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Further confirmation
Cathode foil specifications.