jbcapacitors blog

jb capacitors is old factory since 1980. manufacturing the film capacitors, SMD & Large Can Electrolytic capacitors.

To make you know more about our products,  pls visit our website: www.jbcapacitors.com

We have the best support on high quality, good prices and 4-6 weeks lead time for X2 film capacitors. 

Welcome to visit  Electronica 2012,   jb Booth No.: B6.437/5,     13-16 November ,2012,   Munich, Germany.

jb capacitors is old film capacitors and large can electrolytic capacitors manufacturer, exhibit global electronica components fair.  with very good reputation on markets.
 
contact us:  info@jbcapacitors.com 

◆ Electronica 2012 (New) 
     jb Booth No.: B6.437/5
     Date: November 13th-16th 2012
     Address: Messegelande, D-81823 Munchen, Germany 
 
◆  EXPO Electronica 2012 
      jb Booth No.: J36 in Hall 3
      Date: 11-13th, April.2012
      Address: Crocus Expo , Moscow, Russia. 
 
◆ Electronic Asia 2011 
      jb Booth No.: 5G-C19. 
      Date: 13-16 October 2011 
      Address: Hong Kong Convention & Exhibition Centre.
  
◆ Electronica 2010 
     jb Booth No.: B6.437/10 
     Date: November 9th-12th 2010
     Address: Messegelande, D-81823 Munchen, Germany 

◆ Electronic Asia 2010 
      jb Booth No.: 5G-B40. 
      Date: 13-16 October 2010
      Address: Hong Kong Convention & Exhibition Centre. 
 
◆ Electronic Asia 2009 
      jb Booth No.: 5EE26. 
      Date: 13-16 October 2009
      Address: Hong Kong Convention & Exhibition Centre. 

jb Capacitors Company produce high quality SMD Electrolytic Capacitors.
Below SMD electrolytic capacitors replace Panasonic, Nichicon Rubycon and Samwha. Pls. send your inquiry or part numbers to info@jbcapacitors.com
 

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.

安规电容是指用于这样的场合：即电容器失效后，不会导致电击，不危及人身安全.它包括了X电容和Y电容。

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。

基于漏电流的限制，Y电容值不能太大，一般X电容是uF级，Y电容是nF级。X电容抑制差模干扰，Y电容抑制共模干扰。

Y电容的电容量必须受到限制，从而达到控制在额定频率及额定电压作用下，流过它的漏电流的大小和对系统EMC性能影响的目的。

GJB151规定Y电容的容量应不大于0.1uF。Y电容除符合相应的电网电压耐压外，还要求这种电容器在电气和机械性能方面有足够的安全余量，避免在极端恶劣环境条件下出现击穿短路现象，

Y电容的耐压性能对保护人身安全具有重要意义。

Film Capacitors are Non polarized, and may be used in AC or DC circuits.
Typical values range form 1000pF to 1uF for Polyerster Film, and 0.01uF to 18uF for Metallized Film capacitors. Standard Film Capacitor values change in multiples of 10, 12, 15, 18, 22, 27, 33, 39, 47, 56, 68, 82.

Normal Temperature Coefficient [TC] for Film Capacitors is +7%.

• Mylar: has a wide temperature change of 20% over -55 to +125°C. Moisture absorption is half that of paper.
  Mylar is the same as polyester. The term Mylar is a trade name.
• Polycarbonate: Out performs Mylar in all areas. Low Power factor, works best with AC. Polycarbonate has a low temperature drift (graph below), dissipation factor, and dielectric absorption. Use polyphenylene sulfide as a possible replacement.
• Polyester: Replaces paper for many applications, and smaller in size. Polyester does not have the moisture problem that paper does, but does have a worse tolerance, at 20% ~ over -55 to +125°C. May also be called PETE, or PETP. The Polyester Dielectric has an Absorption of around 0.20%.
• Polypropylene: It has negative temperature coefficient.
• Polysulfone: Has a very high operating temperature of +170°C.
• Polystyrene: Will only work to +65°C. It has a flat to negative temperature coefficient.
• Teflon: Has a very high operating temperature of +170°C.

Round Feed Through capacitors, in a skin tight plastic wrap with solderable ends (Style Q). The hole in the center of the capacitor is either a Teflon Tube, Paper Tube or Phenolic Tube ranging in sizes from just a wire to a large threaded stud to fit through. The majority of Feed Throughs are custom made to exact customer requirements. They are very popular in filter applications.

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/

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.

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