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Aluminum electrolytic capacitor makers in China offer lead, chip, screw and snap-in types. Releases come in 0.1µF to 3F and 5 to 600V versions to suit various requirements. These have a typical operating temperature of -40 to 85 or 105 C. There are models that support 125 or 130 C. Nantong Sancon Electronic Technology Corp.'s selection includes products with up to 820F.
By electrolyte, the options are nonsolid and solid. The first uses the liquid form, while the latter adopts organic polymers such as polythiolene and polyprole.
Suppliers categorize the components by application as well. There are consumer, industrial and special capacitors. The third includes products for the military and aeronautics sectors.
Electrode foils are the key material, accounting for 30 to 60 percent of production cost. The rest of the inputs are electrolyte, electrolytic paper, sealing rubber, lead terminals and aluminum case.
Makers obtain the first locally. The major providers include Guangdong Dongyangguang, Xinjiang Joinworld, Guangxi Hezhou Guidong, Jiangsu Zhonglian and Nantong South Light. For electrolyte, the top source is Shenzhen Capchem.
Electrolytic paper comes mainly from NKK of Japan, and domestic companies Zhejiang Kan and Minfeng Special Paper. The other materials are purchased in the mainland.
Despite rising labor outlay, manufacturers are reducing prices to attract more orders amid intense competition.
Here is a selection of aluminum electrolytic capacitors from China:
Jicon Electronic Technology (Shenzhen) Co. Ltd's CD19A model is a 160V lead-type aluminum electrolytic capacitor with 100µF capacitance. It is RoHS-compliant.
The high-frequency and low-impedance unit has a PVC sleeve and measures 16x25mm. It lasts 3,000 hours in 85 C.
The RH Series of radial-lead aluminum electrolytic capacitors from Nantong Sancon Electronic Technology Corp. come in 0.47 to 4,700µF models.
Designed for LED lighting, the 10 to 500VDC units boast high frequencyand low impedance, and have a life span of 2,000 hours in 105 C. They comply with RoHS guidelines.
The minimum order quantity is 3,000 units. Delivery is within 20 days.
The model TR aluminum electrolytic capacitor from Shenzhen Shengtai Technology Co. Ltd has 10µF capacitance and ±20 percent tolerance.
The 50V unit has -40 to 105 C operating temperature. It measures 5x7mm.
Shenzhen Topmay Electronic Co. Ltd's model TMCE02-337M160VP7.5B aluminum electrolytic capacitor for industrial equipment comes with safety vents. It has 330µF capacitance, ±20 percent tolerance and 160V rated voltage.
The 7.5mm-pitch unit boasts a load life span of 2,000 hours in 105 C. It measures 16x31mm. The price is $0.22. The minimum order is 10,000 units, and delivery is within 12 days.
Suzhou UUcap Electronic Co. Ltd's 200V snap-in aluminum electrolytic capacitor, model HE2D122M30X50AA0, has 1,200µF capacitance and ±20 percent tolerance. The dissipation factor is 0.15.
The RoHS-compliant unit with 2,650mA ripple and 1.46mA leakage current operates in -40 to 105 C. It has a life span of 5,000 hours.
The model is priced $1.20 for a minimum order of 100 units. The maker delivers within 7 days.
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