jbcapacitors blog

We are glad to share a piece of good news with jb faithful customers. jb JFV - X2 Metallized 
Polypropylene Film Capacitor has adopted Laser Marking printing instead of Ink printing.

With great flexibility of the process, Laser marking makes high quality, fast making speed. What’s more, it is RoHS compliant. The appearance of capacitor becomes better and we confirmed it will not impact any functions.

The specifications of jb JFV - X2 Metallized Polypropylene Film Capacitor:

For more jb JFV - X2 information, please visit: 
http://www.jbcapacitors.com/Plastic-Film-Capacitors/JFV-X2-Metallized-Polypropylene-Film-Capacitor.html

In order to shorten the delivery time for film capacitors, we begin to change the oil marking to laser making for JFV X2 Metallized Polypropylene Film Capacitors.
The marking change does not affect the products performance. At the same time, the laser marking can avoid the numbers been erased after long time using.

Over all, not only from the production aspect, but also from the technology aspect, laser marking is more advanced.
We wish our customer will benefit from this change.

http://www.jbcapacitors.com/Plastic-Film-Capacitors/JFV-X2-Metallized-Polypropylene-Film-Capacitor.html

Happy New Year!
in the New Year 2016, "jb" hope happiness, health, fortune all along with you.  :)

Here I want to share you a good news, now, we have below stock on hand, do you have interest?
the stock have justbeen prepared, then I email you. but as the quantity is limited, first come, first served.
 

After restful labor holiday, are you looking for cost down for your bom list? 
Please check if you are looking for X2 capacitors?

In this May, we still have very special offer for X2 capacitors.  We have both JFV & JFZ series, have ENEC VDE UL approvals.

JFV series, focus on 275VAC standard, from 1000pF to 2.2uF, different size version can meet many customers' PCB needs.
http://www.jbcapacitors.com/Plastic-Film-Capacitors/JFV-X2-Metallized-Polypropylene-Film-Capacitor.html
JFZ series, focus on 310VAC standard, from 1000pF to 2.2uF, very attractive prices and short delivery, yellow color.
http://www.jbcapacitors.com/Plastic-Film-Capacitors/JFZ-X2-Metallized-Polypropylene-Film-Capacitor.html

Cross guide: Epcos B81130, B32921~32924; Vishay MKP 3362,3382,3392, Arcotronics(kemet) R46, PHE840, Panasonic ECQU, Faratronic C42, MKP62, Wima MKP X2, MP3 X2

jb Capacitors offer JFV X2 capacitors with excellent Bulk package, and Ammo package with inside kink leads or Straight leads good quality and attractive prices. if you have inquiry, please send to quote freely:info@jbcapacitors.com
 
Please see our JFV X2 column here: http://www.filmcap.hk/post/34.html

Cross Guide with Kemet, Epcos, Panasonic ,Vishay, Pilkor

Download our cross guide from PDF Link: 
http://www.jbcapacitors.com/pdf/JFV-X2-Metallized-Polypropylene-Film-Capacitors-Cross-Reference.pdf

jb JFV - X2 Metallized Polypropylene film capacitors, detail values cross guide.

Many customers use below JFV X2 film Capacitors replace Vishay, Epcos, Kemet....
 
pls check below JFV X2 film capacitors cross references from jb capacitors company.

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.

 

Au département d'achat ou de vente:
Comment allez-vous ?

Maintenant nous sommes foyer sur favoriser notre série de JFV ! Cette série est pour le marché d'oversea, et employé couramment en ballasts électroniques, ventilateurs, éclairage, mètre de puissance, fournisseurs de puissance….application partout dans le monde. Achetez-vous des condensateurs du film X2 ? Bienvenue pour nous envoyer l'enquête et pour vérifier nos prix. Merci.

Série de JFV--Condensateurs de film de polypropylène métallisés par X2 
Approbation de sûreté : Approbations de la CE et de TUV et d'UL.
Chaîne de capacité : 1000pF~2.2uF
Correspondance: Panasonic ECQU, Vishay MKP3382 275Vac, Wima MP3, Arcotronics R46, Pilkor PCX2 337,Epcos B81130, Evox Rifa PHE840M. 
Délai d'exécution court : environ 5~7 semaines
Datasheet: http://www.jbcapacitors.com/pdf/JFV-X2-Metallized-Polypropylene-Film-Capacitor.pdf