jbcapacitors blog

Do you still remember our JYM series which we introduced to you in while ago?

JYM is Multilayer (mono) Axial & Radial Ceramic Capacitors, his provide Miniature size, wide capacitance, tape and reel packaging available for auto-placement.

Wide range of applications: Such as microwave ovens in home appliances, induction cookers, air conditioner controllers, energy-saving lamp ballasts, chargers, currency counters, paper shredders, building video intercom systems, audio equipment...etc.

New series coming up with very nice price! we support few weeks. lead time and reasonable price, welcome to contact us.

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. 

Jb Capacitors Company is an ISO manufacturer. We offer competitive prices and short delivery time.
If you are looking for ceramic capacitors, please check below our product series and their features. They can be used in various fields.
Please feel free to contact us with RFQ directly, and we are willing to recommend suitable products for you.

JYA - X1 / Y1(CD 400VAC) and Y2(CE 300VAC) Safety Standard Recognized Capacitors
-Ideal for across the line applications
-Compact size
-Cost effective product
-Safety standards recognized

JYC - High Voltage Ceramic Radial Type Disc Capacitors
-Operating Condition Range -25°C to +85°C.
-Rated Working Voltage 1KV – 15KV DC.
-Use for coupling, and by-pass circuit there are a stable and high reliability products.

JYM - Multilayer (Mono) Ceramic Capacitors
-Coating by epoxy resin, creates the excellent humidity resistance and prevents body from damaging during soldering and washing.
-Miniature size, wide capacitance, tape and reel packaging available for auto-placement.
-Industry standard size and various load spacing available.

Super Capacitors is also known as ultra-capacitor or double-layer electrolytic capacitor. They are effective to recharge quickly. Often be used in solar power, battery back-up, battery, flash-light applications, etc. Now also have made critical inroads into electric powertrains.

We offer several types of super capacitors, including Radial, Snap-in, Screw, Coin, and Combined Type. High quality and short delivery time.

Super Capacitors List
JGA - 5.5V Standard Coin Type Super Capacitors
JGM - 5.5V 7.5V Combined Type Super Capacitors
JGY - 5V 7.5V Combined Type Super Capacitors
JGZ - 2.7V 3V Low ESR Radial Snap in Screw Type Super Capacitors

Welcome to contact if you are interested with our capacitors. Our sales team is willing to recommend our products and prepare good prices for you.

Are you looking high voltage box type film cap? Welcome to check our JFQD series.

Compare with JFQ series, JFQD is Met Polypropylene Film Capacitor with double sided metallized polypropylene structure can safely withstand high pressure environments and widely used in high voltage, high frequency and pulse circuit. We can reach to 2000VDC and temperature can reach to 105C.

JFQD - Double Sided Box Type Met Polypropylene Film Capacitor
Features:
•Metallized structure, widely used in high voltage, high frequency and pulse circuit.
•Negative temperature coefficient of capacitance.
•Excellent active and passive flame resistant abilities.
•Low loss and small inherent temperature rise.

jb Capacitors not only have stand tantalum capacitors, but also it has Ultra-Low ESR Conductive Polymer Chip Tantalum Capacitors. It is jb’s JTD series. This series contains the feature like below. 

 High frequency capacitance retention
 Volumetric efficiency
 High ripple resistance
 Extremely long life and polarized.
 Attractive to design-in engineers for space 
 Suitable for high frequency applications.
 High reliability and heat resistance.

Based on the above features, it can be used on DC/DC converters, notebook PCs , portable electronics , telecommunications (mobile phone and base station ), displays ,SSD,HDD and USB.
Though, this is a new series in jb Capacitors Company, but it also have the fast lead time, competitive price and high quality. jb can provide customized items too.

In 2021, jb would like to wish all of our customers have a Chinese New Year. And, we are ready to expand our product line to the market.

jb capacitors company has a few feature, see below.
1. huge range of capacitors including ceramic, film, Radial E-cap, SMD…so on
2. supply of quality capacitors at the lowest possible prices
3. Individual approach to each client
4. focus on long-term relationships with partners and clients
5. shortest delivery times of capacitors

If you are interested in our partnership, please contact us.

We manufacture and market Ceramic Capacitors, Including CD Y1 400VAC and CE Y2 300AC Safety Standard Recognized Capacitors and 1KV, 2KV, 3KV,4KV, 5KV, 6KV, 8KV, 10KV, 15KV DC High Voltage Ceramic Capacitors.

JYA - Y1(CD 400VAC) and Y2(CE 300VAC) Safety Standard Recognized Capacitors
- Ideal for across the line applications
- Compact size
- Cost effective product
- Safety standards recognized

JYC - High Voltage Ceramic Radial Type Disc Capacitors
- Operating Condition Range -25°C to +85°C.
- Rated Working Voltage 1KV – 15KV DC.
- Use for coupling, and by-pass circuit there are a stable and high reliability products

Super capacitors are ideal when a quick charge is needed to fill a short-term power need. They can be used in solar power applications, battery back-up applications, battery applications, flash-light applications, etc.

Super capacitors have also made critical inroads into electric powertrains.The virtue of ultra-rapid charging during regenerative braking and delivery of high current on acceleration makes the super capacitor ideal as a peak-load enhancer for hybrid vehicles as well as for fuel cell applications.

jb has Radial, Snap-in, Screw Type Super Capacitors and Coin Type Super Capacitors.

With its High energy , high power, Low ESR, Pb-free and RoHS compliant characteristic.
Welcome to contact us to know more. 

Due to covid-19 impact, many capacitors manufacturers in the world have to suspend produce and close factory, inventory start insufficient cause price increase and longer lead time in the market.
During this difficult period, jb still keep stable output and advantageous price. Welcome to send inquiry to us, we surely do our best to support our customers.We believe we can beat the virous in final. jb Capacitors always stay with you.

Jb Capacitors production line
*Plastic Film Capacitors
* Aluminum Electrolytic Capacitors
* Polymer Aluminum Solid Capacitors
* SMD Aluminum Electrolytic Capacitors
* Ceramic Capacitors
* Tantalum Capacitors
* Super Capacitors