jb Motor starting capacitors, motor run capacitors

Motor Start Metallized Polyproyplene Film Capacitors ( Motor Run capacitors ) , in China, also called CBB60, CBB61, CBB65.

jb Capacitors Company produce 18 kinds of motor starting capacitors, with different terminals.

Tony: I heard that Brand Electronicon discontinued E23 series motor starting film capacitors since last year.
Peter: Really ? how about Iskra motor starting capacitors ?
Terry : I bought Iskra capacitors, but their prices are too high.
Anna: I used to use Iskra brand, but now I use jb Capacitors Brand, quality is very good, and their prices are very reasonable.
I buy from jbcapacitors JFS--17 series for many years.
Piotry: Yes, really good brand, I buy jb capacitors JFS-13 series for a long time, their delivery time is very fast too.
I am going to buy their JFS--6 series soon. The box type with terminals motor run capacitors are also very popular.
I also received information from jb capacitors, seems their JFS-17 can replace Electronicon E23 series.
Tony: Sounds great !! I will contact with jb capacitors and check soon.

jb JFQ-Box type double sided metallized polypropylene film capacitor

jb capacitors company strongly recommend:

JFQ-Box type double sided metallized polypropylene film capacitor

This type capacitors capacitance range is wide, voltage is up to 2000V, can cross to many high end European brands:

Capacitance Range: 0.00022uF ~ 3.9uF
Rated Voltage: 250V, 400V, 630V, 1000V, 1400/1600V, 2000V.DC
Lead Spacing: 7.5mm, 10mm, 15mm, 22.5mm, 27.5mm

Cross Reference:
Arcotronics(Kemet) : R76 series
EVOX RIFA: PHE450 series
Vishay: MMKP 383 Series
Wima: MKP 10,
Philkor: PCMP384 series etc...

Applications: electronic ballast, frenquency control, lighting etc...

jb What is The Difference Between Polyester, Polypropylene?

Polyester films, are clearer and a higher quality than lower grade films, which tend to be foggy. Premium films also endure extreme environments and severe stress conditions more favorably. Films with higher polyester content are more rigid and feel thicker than films with more adhesive content.

Polypropylene film is softer than polyester, but still has excellent clarity. These films have strong chemical resistence, good color stability over printed sheets, and good elasticity which allows the film to lay extremely flat. Due to its softness and flatness, polypropylene films are most often used in single-sided laminating.



X电容是跨接在电力线两线 (L-N) 之间的电容,一般选用金属化薄膜电容;Y电容是分别跨接在电力线两线和地之间 (L-E, N-E) 的电容,一般是成对出现。




过电压等级 (IEC664)


>2.5kV ≤4.0kV














≥ 250V



≥150V ≤250V



≥150V ≤250V







jb CE,UL, TUV approvals--JFV series X2 MKP Film Capacitors

CE word is from the French "Communate Europpene" from the initials, is the meaning of the European Community。"CE" mark is a safety certification mark, the manufacturer is considered open and the passport to enter the European market.

UL is in English Test by insurance Underwriter Laboratories Inc. UL secuity testing is the most authoritative, but also engages im community safety testing and identification of the larger non-governmental organizations.

JFV-X2 Metallized Polypropylene Film Capacitor, is not only with above two approvals(CE& UL), but also with TUV approvals. That must can help to promote this capacitor in your market.

Do you use the X2 safety capacitors ? For more info, welcome to visit "jbcapacitors" production lines:  http://www.jbcapacitors.com/Plastic-Film-Capacitors/

jb X2 Film Capacitors Stock Offer--JFV series

In order to meet some customers' urgent request, jb capacitors company plan to sell stock X2 film capacitors from July.

Now we have below stock X2 Metallized Polypropylene Film Capacitors, welcome to ask for quote

JFV-X2 Metallized polypropylene film capacitor, cross to Epcos B81130, Vishay MKP3382, Kemet R46,etc.

0.1uF 275VAC +/-10% P:15mm Bulk RoHS Part#: JFV0A1104K150000B, .

0.22uF 275VAC +/-10% P:15mm Bulk RoHS Part#: JFV0A1224K150000B

X2 film capacitors widely used in powersupply, amplifier, electronic ballast, white goods, automotive etc..

jb capacitors JFV series X2 film capacitor is one of the most strong series, best seller, with jb UL,TUV,CE approvals.

Stock samples & goods are available! First come first served!

jb Mylar polyester film capacitors used for Home Refrigerato

Kindly note Mylar Polyester Film capacitor can be used in Home Refrigerator with 1200V high voltage and value (1000pF /2200pF /2700pF /3300pF ).

JFA--Mylar polyester film capacitors, green capacitors.

1000pF 1200V

2200pF 1200V

2700pF 1200V

3300pF 1200V

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

What is your application ? What kind of capacitors do you use ?

jb Development Tendency of Film Capacitors

Film capacitors mainly used in electronics, home appliance, communication, electrified railway, HEV(Hybrid Electric Vehicle), wind power generation, solar electrical energy generation etc..

As the demand of film capacitors for frequency home appliance is bigger than that of common home appliance, its advantages of energy conservation and environmental protection are more and more popular, future market is much bigger. After Japanese earthquake, frequency home appliance market much bigger than CFL, and the development potential even bigger.

With the development of technology, electronics, home appliances, communications and other industries replacement cycles are getting shorter, and film capacitors with its good electrical performance and high reliability, become the indispensable electronics components for promoting and upgrading of the above industries.With the next few years, digital, information technology, network construction and further development of countries in the power grid construction, electrification of railway construction, energy efficient lighting, hybrid cars, etc. to increase investment and consumer electronics products, upgrades, market demand for film capacitors will further show rapid growth trend

jb Mylar polyester film capacitors features and applications

Mylar Polyester film has a lot of mechanical, di-electrical, excellent optical and physical strength and so it is been widely used in many fields. It is mainly used for the purpose of insulation and is used in electrical equipment, appliance, and membrane switch.

The features of Mylar Polyester film capacitor are as follows. It is train-and tear-resistant, dimensionally stable and has excellent electrical properties. This material has good heat-and cold-resistant properties and is resistant to common solvents. The main application of Mylar Polyester film capcitor is that it is used as intermediate and top layer insulation in transformers, chokes and relay coils. Furthermore, it is used as slot and phase insulation, as a cover slide, in electric machinery, generators, as insulating layer for magnets and in electrical equipment been used..

jb capacitors company has such product, JFA—Mylar Polyester Film Capacitor, welcome to visit website www.jbcapacitors.com for further details.

jb E3 & E6 Series Values

1.)Capacitors Breakdown voltage

Main article: Breakdown voltage

The breakdown voltage of the dielectric limits the power density of capacitors. For a particular dielectric, the breakdown voltage is proportional to the thickness of the dielectric.

If a manufacturer makes a new capacitor with the same dielectric as some old capacitor, but with half the thickness of the dielectric, the new capacitor has half the breakdown voltage of the old capacitor.

Because the plates are closer together, the manufacturer can put twice the parallel-plate area inside the new capacitor and still fit it in the same volume (capacitor size) as the old capacitor. Since the capacitance of a parallel-plate capacitor is given by: 

this new capacitor has 4 times the capacitance as the old capacitor.

Since the energy stored in a capacitor is given by: 

This new capacitor has the same maximum energy density as the old capacitor.

The energy density depends only on the dielectric. Making a few thick layers of dielectric (which can support a high voltage, but results in a low capacitance), or making many very thin layers of dielectric (which results in a low breakdown voltage, but a higher capacitance) has no effect on the energy density.

2.) Standard values

Before 1960 electronic components values were not standardised. The more common, but not the only, values for capacitors were 1.0, 1.5, 2.0, 3.0, 5.0, 6.0, and 8.0 as base numbers multiplied by some negative or positive power of ten. Values of 0.001 µF and above were stated in microfarads (µF, or often mF); lower values were stated in micro-microfarads (µµF, now called picofarads, pF).

In the late 1960s a standardized set of geometrically increasing preferred values was introduced. According to the number of values per decade, these were called the E3, E6, E12, etc. series










































In many applications capacitors need not be specified to tight tolerance (they often need only to exceed a certain value); this is particularly true for electrolytic capacitors, which are often used for filtering and bypassing. Consequently capacitors, particularly electrolytics, often have a tolerance range of ±20% and need to be available only within E6 (or E3) series values.