jbcapacitors blog

Do you know that we have Polymer Chip Tantalum Capacitors? Our JTD is SMD Conductive Polymer Chip Tantalum Capacitors. jb is trying to expand our market share, so we launched this series. This series is suitable for DC/DC converters, notebook PCs, portable electronics, telecommunications (mobile phone and base station ), displays, SSD, HDD and USB.

Features:
Extremely low ESR
Volumetrically efficient
Stable in electrical & storage performances
Long lifespan
High reliability
Epoxy molded encapsulation
Easy for integration
Polarized.
If you have any demands in Polymer Chip Tantalum Capacitors, please send to us. We will surely offer the best price to you.

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 manufactures and markets Aluminum Electrolytic Capacitors, including Snap-in Type Aluminum Electrolytic Capacitors, Screw Type Aluminum Electrolytic Capacitors, Lug Type Aluminum Electrolytic Capacitors and Radial Aluminum Electrolytic Capacitors.
We are a professional manufacturer for aluminum electrolytic capacitors. We have around 40 years manufacturing experience of electrolytic capacitors.
Generally speaking, jb Capacitors focuses on large can aluminum electrolytic capacitors and SMD aluminum electrolytic capacitors.
Large can aluminum electrolytic capacitors include snap in electrolytic capacitor, screw electrolytic capacitors and lug aluminum electrolytic capacitors.

Let’s introduce our Aluminum Electrolytic Capacitors today. We have some fields about Aluminum Electrolytic Capacitors.
Below is our strong series. If you cannot find the suitable products below, please feel free to mail us.

Radial Aluminum Electrolytic Capacitors
JRA - 2000H at 85°C, Radial Aluminum Electrolytic Capacitors
JRB - 2000H at 105°C, Radial Aluminum Electrolytic Capacitors
JRC - 2000H at 105°C, Radial Aluminum Electrolytic Capacitors
JRD - 5000H at 105°C, Radial Aluminum Electrolytic Capacitors
JRG - Long Life at 105°C, Radial Aluminum Electrolytic Capacitors
JRJ - 1000H at 85°C, Radial Aluminum Electrolytic Capacitors,7mm Height
JRK - 20000H at 105°C, Radial Aluminum Electrolytic Capacitors
JRW - 20000H at 105°C, Radial Aluminum Electrolytic Capacitors
JRQ - 1000H at 105°C, Bi-Polarized Radial Aluminum Electrolytic Capacitors

Axial aluminum electrolytic capacitors
JAA - 2000H at 85°C, Low Leakage Current, Axial aluminum electrolytic capacitors
JAB - 2000H at 85°C, Low Voltage, Axial aluminum electrolytic capacitors
JAH - 1000H at 105°C, Low Voltage, Axial aluminum electrolytic capacitors
JAC - 1000H at 105°C, DF at Max 4% BP Axial Aluminum Electrolytic Capacitors for Audio System
JAD - 1000H at 105°C, DF at Max 5% BP Axial Aluminum Electrolytic Capacitors for Audio System
JAE - 1000H at 105°C, DF at Max 10% BP Axial Aluminum Electrolytic Capacitors for Audio System
JAF - 1000H at 105°C, DF at Max 10% BP Axial Aluminum Electrolytic Capacitors for Audio System

Snap in aluminum electrolytic capacitors
JNC - 2000H at 85°C, Snap in Aluminum Electrolytic Capacitor, for Speaker Network
JNE - 2000H at 105°C, Miniaturized, Snap in Aluminum Electrolytic Capacitor
JNG - 5000H at 85°C, Snap in Aluminum Electrolytic Capacitor, Miniaturized Size, Long Life
JNJ - 3000H at 105°C, Miniaturized, Long Life Snap in Aluminum Electrolytic Capacitor
JNK - 5000H at 105°C Snap in Aluminum Electrolytic Capacitor

Screw type aluminum electrolytic capacitors
JMJ - 2000H at 85°C, Miniaturized, Screw Aluminum Electrolytic Capacitor
JML - 2000H at 105°C Screw Aluminum Electrolytic Capacitor
JMN - 5000H at 85°C Screw Aluminum Electrolytic Capacitor, long time
JMQ - 5000H at 105°C Screw Aluminum Electrolytic Capacitor, for Inverter

Lug Aluminum Electrolytic Capacitors
JSS - 85°C, Miniaturized Size, Lug Aluminum Electrolytic Capacitor
JSU - Photo Flash, Lug Aluminum Electrolytic Capacitor
JSW - Motor Starting Capacitor

Snap-in Aluminum Electrolytic Capacitor is one of the strong series in jb Capacitors Company. We have wide range of capacitance for our standard items. But, we can also customized for customers. To be easily mounted on PCB board, snap in E-cap has two pin or three pin snap- in terminals. About its feature, it has great ripple current capabilities with compact dimensions. Furthermore, it has outstanding load life. Its typical application has, inverters, converters, power supplies, UPS and so on.

There are different load life, operating Temperature for different series. Please check below is the table for each series. Below is only standard data, if you need any customized parameter, please contact with our sales team.

welcome to visit our Youtube video:
jb Snap in Type Aluminum Electrolytic Capacitors Factory:https://youtu.be/1yrwKo1VGCs

There's big prices improvement for our SMD electrolytic capacitors. please mail to us to get the latest update prices.

Below items are very popular items for JCS SMD ECap, 85'C 2,000hrs. we are good replacement of Samwha, Rubycon, Panasonic etc., please come to us.

Package: Tape & Reel
MOQ: 1000pcs