jbcapacitors blog

A capacitor is a passive electronic component that stores energy in the form of an electrostatic field.  In its simplest form, a capacitor consists of two conducting plates separated by an insulating material called the dielectric. Capacitance is directly proportional to the surface areas of the plates, and is inversely proportional to the plates' separation.

Capacitance also depends on the dielectric constant of the dielectric material separating the plates.

The standard units of Capacitance,

farad: F
microfarad: µF (1 µF = 10-6 F)
nanofarad: nF (1 nF = 10-9 F)
picofarad: pF (1 pF = 10-12 F)

For any good capacitors, welcome to find us.jb can help you in this regards.

Film Capacitors are distinguished by their extreme reliability. They are principally used in power supplies for telecom equipment, domestic appliances and entertainment electronics. Energy-saving and environmentally friendly lighting would be inconceivable without Film Capacitors. They are also essential to high-speed Internet access.

jb Capacitors produce Metallized Polyester Film Capacitor since 1980. Metallized Polyester Film Capacitor is one of the most common series of Film Capacitors, we sell high quality with very competitive prices in the market. Following are Metallized Polyester Film Capacitor specifications.

Metallized Film Capacitors:
Operating Temperature: -40℃~+85℃
Voltage Rating: 250V.AC
Capacitance Range: 0.01~4.7μF
Capacitance Tolerance: ±5%,±10%,±20%
Pitch size: 10,15,20,22.5,26.5,31.5,31mm

Along with the high integration of semiconductor devices, the miniaturization of their components has also advanced. For a dynamic random access memory (DRAM), a high-capacity capacitor with small size is required. Ferroelectric thin film capacitors with extremely large relative permittivity have been developed for this purpose. In film capacitors, the dielectric in such film capacitors comprises a plastic film. The electrodes comprise conductive metal areas. These metal areas are either thin conductor films or conductor layers vapor-deposited onto the plastic film. Thin-film capacitor devices generally comprise a substrate and a lower electrode, a dielectric layer, and an upper layer which are deposited on the substrate in that order. Thin-film capacitors also have a semiconductor substrate functioning as a lower electrode and have a dielectric layer and an upper layer which are deposited on the semiconductor substrate in that order in some cases.

jb Specialized in producing full series of film capacitors, jb capacitors offer X1 polypropylene film capacitors, AC capacitors.

Temperature range: -55℃~ +105℃
Capacitance Range: 0.0022uF~4.7uF                 
Rating Voltage: 300V.AC
Application: High Voltage
Type: Polypropylene Film Capacitors

For more details you can visit website www.jbcapacitors.com to search your interesting products.

My name is Peter Sivak. I am electrotechnical engineer. I work as head production. Our company has many suppliers of many components include electrotechnical materials.

As you know, the production us very sensitive for quality ,delivery time and dependent of flexibility suppliers and last but not least the price. The jb capacitors is our favorite suppliers,

because they fulfill the previous condition.

The jb capacitors company really want keep a promise, or the request of customers. Their dealers are very kind , helpful and friendly. It is good advance how to be successful.

It will be very good if every of our suppliers will be as good as jb.

jb capacitors produce film capacitors since 1980. Have a very good reputation in use with consumer&industrial electronics.

Our JFA Mylar polyester film capacitors (CL11) are widely used for energy saving lamps (CFL), ballasts.. many lighting products.

JFA series Mylar polyester film capacitors, CL11 series, many customers also called green capacitors, with very small size, low price.

jb capacitors company offer very short lead time for mylar film capacitors.

JFA--Mylar polyester film capacitors (CL11)

Capacitance range from 0.001uF ~0.47uF

Datasheet: http://www.jbcapacitors.com/pdf/JFA-Mylar-Polyester-Film-Capacitor.pdf

Polyester film capacitors:
K73-11, K73-15A, K73-16, K73-16V, K73-17, K73-17V, K73-21, K73-21B, K73-21G, K73-24, K73-24B, K73-5, K73-9, K73-9B, K73P-2, K73P-3, K73P-4, K76P-1,

Polypropylene capacitors:
K78-2

Polystyrene film capacitors:
K71-4, K71-5, K71-7V, PM1-1

Large Can Electrolytic capacitors:
K50-17, K50-37, K50-74, K50-80, K50-84, K50-86

From: Tony Szullo

To: JB

Attn.: Sophia

Dear Sophia,

Here is our statement about the X2 capacitors:

We are testing all incoming batch of X2 polypropylene capacitors for breakdown voltage. According to our internal quality standard, this must be minimum 2000Vdc. The shipment which we received from JB Capacitors is consistently well above this threshold on all purchased values from 0.022uF to 1uF. According to our QA reports, we have not experienced a single failure in the past 12 months period.

Best Regards,

Tony Szullo