jbcapacitors blog

We have wide range of Radial Aluminum Electrolytic Capacitor. jb’s JRG has the feature of Extremely Low impedance and High Long Life. Some of customer is using this series on UPS, power supply application. We can also customize the items for customers. The voltage can be produced up to 450V. As the same as the Load life, it is possible to customize it to 15000H.
If you need higher voltage, please send the email to us for more information. Please find the below is JRG feature.

* Load life of 10000 hours at 105°C
* High ripple current
* Miniature Series
* RoHS Directive Compliant
https://www.youtube.com/watch?v=TMmGvnJWyuE

jb Capacitors manufactures Premium Metallized Polypropylene Film Capacitors – Axial type, with high quality, low MOQ and competitive price.
The following Audio Film Capacitors is the one you may interested in. It has approved can replace of Mundorf - MCAP MKP, Jantzen Audio, Mallory, BENNIC, SOLEN, Auricap, INTERTECHNIK etc.

JFX - Premium Metallized Polypropylene Film Capacitors – Axial

Its features are listed below:
* Quick transient design
* High Precise Capacitance ±3%, ±5%
* Very Low Dielectric absorption factor
* Very Low Dissipation factor
* Very Low ESR
* Very Low Inductance
* Excellent handling of high current audio pulses

Please feel free to send us RFQs.
From jb Capacitors company sales department

A ceramic capacitor is a fixed-value capacitor where the ceramic material acts as the dielectric. It is constructed of two or more alternating layers of ceramic and a metal layer acting as the electrodes.
The composition of the ceramic material defines the electrical behavior and therefore applications.

What are the benefits for using multilayer ceramic capacitor? One of the advantages is that multilayer ceramic capacitors have excellent frequency characteristics, thanks to their low equivalent series resistance (ESR). The term “ESR” refers to the resistance component of a capacitor’s internal electrodes, etc.

JFQP Density MKP DC Link-High Power Film Capacitors are metallized polypropylene film capacitors that feature good self-healing properties. These products provide high reliability, low ESR with high current capability, as well as a long useful life.

DC-Link capacitor for DC-filtering and energy buffering, targets power electronics devices for frequency converters, industrial and high-end power supplies, and solar inverters.

A trimmer capacitor is a variable capacitor used for initial calibration and recalibration of equipment. It is commonly mounted directly on a PCB and accessed only by professional repairmen, not the end-user.

Characteristics
Voltage rating, capacitance range, polarity.
Trimmer capacitors can be rated for voltages up to 300 volts, although voltage ratings of up to 100 volts are much more common. Since trim caps are variable capacitors, they come in a capacitance range rather than a
single capacitance value. The minimum capacitance is usually between 0.5 pF and 10 pF, while the maximum capacitance is usually between 1 pF and 120 pF. The actual capacitance value can be varied between the
minimum and maximum capacitance values for a given trimmer capacitor, but it can never be set to zero. It is worth noting that trimmer capacitors are not polarized.

Tolerances and accuracy
Trimmer capacitors do not boast a good capacitance value tolerance. Sometimes, the tolerances can be as high as -0 to +100%. This means that a trimmer capacitor can have a maximum capacitance two times larger
than nominal. However, bad tolerances do not pose a great problem to engineers because trimmer capacitors are variable. Even if the maximum value is different between individual capacitors, they can still be set by turning the screwdriver a certain angle. Accuracy depends mostly on the operator, as he can choose to spend more time in order to set the capacitor to a desired value. Often, trimmer capacitors are set by robots instead of human operators, and they can achieve much better precision. In order to achieve a better accuracy, it is advised to use a non-metallic tool, since metal screwdrivers will introduce a source of capacitance that will vary the capacitance value when the tool is moved away from the capacitor.

Construction and properties of trimmer capacitors
There are two types of trimmer capacitors: air trimmer capacitor and ceramic trimmer capacitor. These two types use different materials as the dielectric. Both types use rotating action to change the capacitance value.
The construction of trimmer capacitors is similar to the construction of their larger variant, the variable capacitor. Trimmer capacitors can be made of semi-circular metal plates. One is fixed, while the other can be rotated using a screwdriver. The user changes the capacitance by rotating the shaft and increasing or reducing the amount of overlap between the two plates. Gear mechanisms may be used to improve the precision by allowing multiple turns between the lowest and highest settings.

Another way to make a trimmer capacitor is to place a metallic screw in a non-conductive threaded cylinder. The screw represents one electrode, while the other is located at the base of the cylinder. By rotating the screw, the distance between the two plates is varied which results in a change of capacitance. This construction is used in RF and microwave applications. 

We know that there are many types of capacitors, depending on the material, application, characteristics and size.

Nowadays, jb is aggressively promoting SMD Surface mount capacitors! You may received some prices from us last month.
Welcome to collect such inquiry and send to us, we will revert back you a unbeatable price!
 
Quite competitive Price & quality, flexible MOQ based on customer request, free samples!