jbcapacitors blog

jb capacitors produce MKT, MKP, X2 safety metallized polypropylene capacitors since 1980.

We are going to stock some X2 capacitors, and provide better delivery support to you. Do you have interest ?

Could you please send us the X2 capacitors requirements ? Then we will keep stock for you. You are welcome to request samples and quotation from us too.

Datasheet link : http://www.jbcapacitors.com/pdf/JFO-X2-Metallized-Polypropylene-Film-Capacitor-(4-approvals).pdf

I need below information, please help reply me:

• 1) Description or Part number of X2 film capacitors (can give Arcotronics, Epcos, Panasonic....X2 capacitors part number)
• 2) Quantity per shipment, per month or per year.
• 3) Order frequency
  

jb compañía condensadores producir  condensadores X2 película con UL, aprobaciones VDE. ampliamente utilizado en la central de medida,
el poder de proveedores y aplicación de la luz.
 
JFN--condensador de película de polipropileno metalizado
Hoja de datos: http://www.jbcapacitors.com/pdf/JFN-X2-Metallized-Polypropylene-Film-Capacitor-8-approvals.pdf
Cruz Arcotronics R46, Epcos B81130, Vishay MKP3382, Wima MP3, Panasonic ECQU.
corto plazo de tiempo: unos 6 ~7 semanas

电容降压的工作原理并不复杂。他的工作原理是利用电容在一定的交流信号频率下产生的容抗来限制最大工作电流。

例如，在50Hz的工频条件下，一个1uF的电容所产生的容抗约为3180欧姆。当220V的交流电压加在电容器的两端，则流过电容的最大电流约为70mA。虽然流过电容的电流有70mA，但在电容器上并不产生功耗，因为如果电容是一个理想电容，则流过电容的电流为虚部电流，它所作的功为无功功率。

根据这个特点，我们如果在一个1uF的电容器上再串联一个阻性元件，则阻性元件两端所得到的电压和它所产生的功耗完全取决于这个阻性元件的特性。例如，我们将一个110V/8W的灯泡与一个1uF的电容串联，在接到220V/50Hz的交流电压上，灯泡被点亮，发出正常的亮度而不会被烧毁。因为110V/8W的灯泡所需的电流为8W/110V=72mA，它与1uF电容所产生的限流特性相吻合。同理，我们也可以将5W/65V的灯泡与1uF电容串联接到220V/50Hz的交流电上，灯泡同样会被点亮，而不会被烧毁。因为5W/65V的灯泡的工作电流也约为70mA。

因此，电容降压实际上是利用容抗限流。而电容器实际上起到一个限制电流和动态分配电容器和负载两端电压的角色。

采用电容降压时应注意以下几点：

• 1.根据负载的电流大小和交流电的工作频率选取适当的电容，而不是依据负载的电压和功率。
• 2.限流电容必须采用无极性电容，绝对不能采用电解电容。而且电容的耐压须在400V以上。最理想的电容为铁壳油浸电容。
• 3.电容降压不能用于大功率条件，因为不安全。
• 4.电容降压不适合动态负载条件。
• 5.同样，电容降压不适合容性和感性负载。
• 6.当需要直流工作时，尽量采用半波整流。不建议采用桥式整流。而且要满足恒定负载的条件。

以上是电容降压工作原理的简单介绍。其实电阻、电容和电感作为电子电路的基本元件，熟知它们的特性并灵活地应用它们是非常重要的。

jb Capacitors produce Mylar Polyester Film Capacitor with very competitive prices. Mylar capacitor is available in high voltage 1000V and 1200V, also high temperature 105° C and 125°C. Mylar Polyester Capacitor is widely used in lighting and lamps. Following are Mylar Polyester Film Capacitor features, specifications and drawing.

JFA - Mylar Polyester Film Capacitor Features

• Inductive welded construction epoxy dip coated.
• Good reputation in use with consumer & industrial electronics.
• Optimum for automatic insertion due to their small size and light weight.
• Coated with epoxy resin for superior heat resistance, humidity resistance and solvent resistance.

JFA - Mylar Polyester Film Capacitor Parameters download PDF files

JFA - Mylar Polyester Film Capacitor Specifications

Operating Temperature	-40°C~ +85°C
Rated Voltage	100V, 250V, 400V, 630V, 1000V.DC
Capacitance Range	0.001 ~ 0.47μF
Capacitance Tolerance	±5%, ±10%, ±20%
Insulation Resistance	0.1μF ≤30,000MΩ min, >0.1μF >15000MΩ
Dissipation Factor	≤0.1 (at 1KHz)
Dielectric Strength	200% of rated voltage for 5 sec.

JFA - Mylar Polyester Film Capacitor Drawing

Specialized in manufacturing full series of Plastic Film Capacitors & Snap-in, Screw & Lug type Aluminum Electrolytic Capacitors. These products have been widely using in consumer's electronics, data processing, telecommunication, and industrial control's equipments. It is our commitment to offer our customers the best quality products with fast delivery and the best after sales services.

jb Capacitors has been producing film capacitors since 1980. We offer all kinds of film capacitors, polyester, polypropylene, polystyrene, epoxy dipped type, box type, X2, X1 class, high voltage film capacitors up to 2000VDC, besides winding technology and stacked technology are both available. Our film capacitors are famous for high quality, short lead time and very competitive prices.

jb Capacitors produces many kinds of motor starting capacitors, with high safety, high reliability, low dissipation factor and low temperature rise.

jb Capacitors has 30 years production experience on large can (snap in, screw, and lug type) aluminum electrolytic capacitors. We sell top quality with reasonable prices. Our SMD aluminum electrolytic capacitors 105'C and 85'C lead time is very short and prices are the best in the market. Monthly output for SMD electrolytic capacitors can meet 30 millions.
Learn more:http://www.jbcapacitors.com/

• Jun, 1980, founded in Tainan, Taiwan to produce Plastic Film Capacitors.
• Feb, 1982, started to produce Snap-in, Screw & Lug type Aluminum Electrolytic Capacitors.
• Dec, 1984, established sales office and warehouse in Hong Kong Located in N.T., HK
• July, 1987, moved to China and built up joint venture in Hefei, Anhui Province, China.
• Dec, 1988, started production of Snap-in, Screw & Lug Aluminum Electrolytic Capacitors in China.
• Aug, 1993, jb Capacitors became sole proprietorship enterprise in China.
• Jun, 2003, jb Capacitors set up sales office in Dongguan, Guangdong Province, China.
• March, 2005, started to produce SMD Aluminum Capacitors.
  Learn more:http://www.jbcapacitors.com/

• JFA--Mylar polyester film capacitors
• JFB--Metallized polyester film capacitors
• JFL--Metallized polypropylene film capacitors
• JFG--Axial lead film capacitor
• JFO--X2 metallized polypropylene film capacitors
• JFR--Radial & Axial Polystyrene film capacitors
• JFP--High voltage metallized polypropylene cap.
• JFQ--Double sided metallized polypropylene cap.
• JFS--Motor starting film capacitors
• JFX--Premium metallized polypropylene Cap.
• JCS--85°C SMD electrolytic capacitor
• JCK--105°C SMD electrolytic capacitor

1. High quality commitment
2. Competitive prices, professional factory
3. Fast lead time
4. Strong sales & technical support, quick response
5. Promotions by exhibitions, B2B, Newsletter
   Learn more:http://www.jbcapacitors.com/