jb Tell You An Example of the Composition of the Electrolyte

  Type Typical Compound Chemical Formula Structure
Solvent Glycol Ether 

Lactone 

Amide
Ethylene glycol C2H6O2
Methyl cellosolve = 
ethylene glycol, 
monomethyl ether
C3H8O2
-butyrolactone C4H6O2
N-methylformamide C2H5ON
Solute Acid Saturated 
aliphatic 
dicarboxylic 
acids 

Unsaturated 
aliphatic 
dicarboxylic 
acids 

Aromatic 
monocarboxylic 
acid 

Aromatic 
dicarboxylic 
acid 

Aromatic 
oxycarboxylic 
acid
Adipic acid C6H10O4
Maleic acid C2H4O4
Benzoic acid C7H6O2
Phthalic acid C8H6O2
Salicylic acid C7H6O3
Base Ammonia 

Amine 

Quaternary 
ammonium
Ammonia 
Ammonium 
hydroxide
NH3
(NH5O)
Triethylamine C6H15N
Tetramethyl 
ammonium 
hydroxide 
pentahydrate
C4H13ON

Glass capacitor construction

The construction of glass dielectric capacitors is relatively straightforward to understand. The capacitor consists of three basic elements: the glass dielectric, aluminium electrodes and the encapsulation. However the assembly of the glass capacitors is undertaken in a manner that ensures the required performance is obtained.

As the capacitance between two plates is not always sufficient to provide the required level of performance, the majority of capacitors use a multiplayer construction to provide several layers of plates with interspersed dielectric to give the required capacitance.

Although the glass plates are always flat, and tubular forms of construction are not applicable, the glass capacitors are usually available with leads emanating in either a radial or axial form. Essentially the leads either exit the encapsulation at the side or the end.http://www.jbcapacitors.com/

Passive SMDs in SMT Components

Passive SMDs:   There is quite a variety of different packages used for passive SMDs. However the majority of passive SMDs are either resistors or capacitors for which the package sizes are reasonably standardized. Other components including coils, crystals and others tend to have more individual requirements and hence their own packages.

Resistor and capacitor packages have a variety of packages. These have designations that include: 1812, 1206, 0805, 0603, 0402, and 0201. The figures refer to the dimensions in hundreds of an inch. In other words the 1206 measures 12 hundreds by 6 hundreds of an inch. The larger sizes such as 1812 and 1206 were some of the first that were used. They are not in widespread use now as much smaller components are generally required. However they may find use in applications where larger powers are needed or where other considerations require the larger size.

The connections to the printed circuit board are made through metallised areas at either end of the package.http://www.jbcapacitors.com/

jb Mini Box Type, 5mm Pitch Size, Stacked, MKT Polyester Film Capacitors

Below is some information for current our most popular items, are you still interested in?
If you need faster lead time 7-9 weeks, welcome to check our JFE series, MKT dipped type, also with P:5mm.

JFJ--Mini Box Type, 5mm pitch size, stacked. MKT polyester film capacitors
Cross Arcotronics (Kemet) R82, Epcos B32529, Vishay MKT370,MKT365-367
Datasheet: http://www.jbcapacitors.com/pdf/JFJ-Mini-Box-Stacked-Metallized-Polyester-Film-Capacitor.pdf
Packing: Bulk & Ammo Pack

jb Capacitors Company -- Film Capacitors Cross Reference

  jb Capacitors KEMET ARCOTRONICS Wima Vishay Roederstein Philip Vishay
POLYESTER FILM 
CAPACITORS
JFGA MKT A50 MKB 6 MKT 1813  
       
JFB     MKT 468, MKT 368
      MKT 467
JFJ MKT R82 (R85) MKS 2 MKT 1817 MKT 365-367
  MKS 2-i   MKT 370
  MKS 22   MKT 465
JFD MKT R66 MKS 3 MKT 1818 MKT 366-367
  MKS 10   MKT 371-466
JFD MKT R60 MKS 4 MKT 1820 MKT 368-369-372
  MKS 10 MKT 1822 MKT 373-467-468
X2 INTERFERENCE 
SUPPRESSION 
POLYPROPYLENE 
FILM CAPACITORS
JFN R46 MP 3-X2 MKP 338 2 MKP 339 2
POLYPROPYLENE FILM 
CAPACITORS
JFL   FKP 3    
       
JFGC MKP A70   MKP 1839  
JFGD KP A72   MKP 1845  
JFQ MKP R76 MKP 10 MKP 1841 MMKP 376
  FKP 1 MKP 1846  
  jb Capacitors Pilkor Epcos Iskra Panasonic KONEK
POLYESTER FILM 
CAPACITORS
JFGA   B 32 231-2 KEU 1012   MKT 69
    KEU 2012   MKT-70
JFB PCMT 365-367 B32591-32592   ECQV MKT 68
PCMT 369 B32593-32594   ECQE  
JFJ   B 32529 KEU 1940   MKT-55
    KEU 1930    
         
JFD PCMT 468 B 32520 KEU 1930   MKT-58
         
JFD   B 32521-2-3-4 KEU 1910    
         
X2 INTERFERENCE 
SUPPRESSION 
POLYPROPYLENE 
FILM CAPACITORS
JFN PCX2 337 B 81 130 KNB 153X ECQU MKP-15
POLYPROPYLENE FILM 
CAPACITORS
JFL PCMP 489 B32612   ECWF MKP-75
PCMP 483        
JFGC   B32669     MKP-69
JFGD         MKP-70
JFQ PMTP 384 B 32 620-1 KNI 1910   MKP-77
         

Half-life of a Capacitor

Symbol:T
Unit:(s)
When a capacitor discharges its charge throught a resistor, the charge of the capacitor decreases with time. The decreasing charge follows an exponential decay curve.

http://www.jbcapacitors.com/

News for jb Capacitors Company Exhibit at Electronica 2010 in Munich

On Nov 9th~12th,2010, jb Capacitors Company exhibit at Electronica 2010 in Munich, Germany.
Booth No. is B6.437/10.

Electronica 2010 in Munich

Electronica 2010 in Munich

Electronica 2010 in Munich

Below you can see our green booth photos. Our booth are very popular, many customers visited our booth with great pleasure.
Our exhibition are very successful.

On the show, we exhibit below, also welcome to contact our sales if you are interested in our leafletes, sample kits, and green bags, and samples.

1. jb Capacitors green leaflets
2. jb Capacitors green sample kits
3. jb Capacitors green bags
4. jb Capacitors samples: including below different series of samples:

JFB - Metallized Polyester Film Capacitor
0.1uF 250V +/-10% P:10mm Bulk RoHS 
0.047uF 400V +/-10% P:10mm Bulk RoHS 
0.47uF 250V +/-10% P:15mm Bulk RoHS

JFD - Box Type Metallized Polyester Film Capacitor
0.1uF 250V +/-10% P:15mm Bulk RoHS

JFJ - Mini Box Stacked Metallized Polyester Film Capacitor
0.047uF/63V +/-5% P:5mm Bulk RoHS 
0.15uF 100V +/-5% P: 5mm Bulk RoHS
0.22uF 63V +/-5% P:5mm Bulk RoHS
0.1uF 100V +/-5% P:5mm 7.2*6.5*2.5mm Bulk RoHS

JFL - Metallized Polypropylene Film Capacitor
0.33uF 100V +/-10% P:15mm Bulk RoHS

Axial Metallized Polyester & Polypropylene Film Capacitor 
JFGA 0.22uF 100V +/-10% 15*7MM Bulk RoHS
JFGA 0.33uF 630VDC +/-10% Bulk RoHS

JFX - Premium Met Polypropylene Film Capacitors – Axial
4.7uF 250V +/-5% Bulk RoHS

JFN - X2 Metallized Polypropylene Film Capacitor 
0.1uF 275VAC +/-10% P:15mm Bulk RoHS
0.15uF 275VAC +/-10% P:15mm Bulk RoHS 
0.22uF 275VAC +/-10% P:15mm Bulk RoHS
0.1uF 275VAC +/-10% P:10mm Bulk RoHS 
0.33uF 275VAC +/-10% P:15mm Bulk RoHS 
0.47uF 275VAC +/-10% P:22.5mm Bulk RoHS 
0.068uF 275VAC +/-10% P:10mm Bulk RoHS

JFO - X2 Metallized Polypropylene Film Capacitor
0.047uF 275VAC +/-10% P:10mm Bulk RoHS
0.1uF 275VAC +/-10% P:10mm Bulk RoHS
0.33uF 275VAC +/-10% P:15mm Bulk RoHS
0.47uF 275VAC +/-10% P:15mm Bulk RoHS

JFP - High Voltage Met Polypropylene Film Capacitor
470pF 2000V +/-10% P:15mm Bulk RoHS

JCS--SMD - Aluminum Electrolytic Capacitors
10uF 50V +/-20% 6.3x5.4mm 2000h at 85°C
22uF 16V +/-20% Size:4*5.4mm 2000h at 85°C

JNE--Snap in Aluminum Electrolytic Capacitors
470uF 200V +/-20% 2000h 25x30mm P:10mm 2000h at 105°C Bulk RoHS

JMJ--Screw terminals Aluminum Electrolytic Capacitors
22000uF 63V +/-20% Size: 51x80mm 2000h at 85°C Bulk RoHS

jb Capacitors Company Exhibit in 2010 Electronics Asia HK Fair

Our jb capacitors company exhibit in 2010 ElectronicsAsia HK show, many customers visited our green booth , our three sales girls who were wearing green jackets , stand in the green booth and welcome all the customers all over the world.

jbcapacitors

jbcapacitors

jbcapacitors

jbcapacitors

During the meeting, we display below our strong series samples, green bags, green leaflets and sample kits to customers , and they check our quality and send us their inquires. All of us enjoy the wonderful moment in the HK fair.

  • JFA--Mylar polyester film capacitor
  • JFB--Metallized polyester film capacitor
  • JFD--Box metallized polyester film capacitors
  • JFG--Axial polyester&polypropylene film capacitors
  • JFL--Metallized polypropylene film capacitor
  • JFO--X2 metallized polypropylene film capacitor
  • JFN--X2 Metallized polypropylene film capacitors
  • JFP--High voltage metallized polypropylene film capacitor
  • JFX--Preminum metallized polypropylene film capacitors, for high-end audio products
  • JCS,JCK--Standard SMD Aluminum Electrolytic capacitors
  • Snap in terminals, Screw terminals and lug terminals for photo flash Aluminum Electrolytic capacitors

Our jb capacitors company sincerely hope to work with all the customers in the world. And we will exhibit in HK fair every year, welcome you visit our booth in 2011.

Next month on November 9th~12th, JB capacitors company will exhibit Electronica 2010 in Munich, Germany. Welcome to visit our booth No. B6.437/10

jb Film Capacitors Part Numbers--Russia

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

jb Customer Comments for X2 Met Polypropylene Film Capacitors

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