Suntan Blog

(1) Ceramic Trimmer Capacitor series can be soldered by flow soldering method and soldering iron. Do not use reflow soldering method.

(2) Soldering condition If the soldering conditions are not suitable, e.g., excessive time and/or excessive temperature, the trimmer capacitor may deviate from the specified characteristics.

(3) The dimension of mounting hole should be Murata's standard mounting hole used at flow soldering. The amount of solder is critical. Insufficient amounts of solder can lead to insufficient soldering strength on PCB. Excessive amounts of solder may cause bridging between the terminals or contact failure due to flux wicking up.

(4) When using soldering iron, the string solder should be applied to the lower part of the terminal only. Do not apply flux except to the terminals. Excessive amounts of solder and/or applying solder to the upper part of the terminal may cause fixed rotor or the contact failure due to flux invasion into the movable part and/or the contact point. The soldering iron should not come in contact with the plastic case of the trimmer capacitor. If such contact does occur, the trimmer capacitor may be damaged.

(5) Our recommended chlorine content of string solder is 0.5wt% max.

(6) Do not use water-soluble flux (for water cleaning). To prevent the deterioration of trimmer capacitor characteristics, apply flux only to terminals.

1. Do not use the trimmer capacitor under atmosphere of RTV silicone rubber (Room Temperature Vulcanizing Silicone Rubber) except Acetone liberating silicone sealant.

2. Before using trimmer capacitor, please store under the condition of -10 to +40 degrees C and 30% to 85%RH.

3. Do not store in or near corrosive gasses.

4. Use within 6 months of delivery.

5. Do not store under direct sunlight.

6. Do not use the trimmer capacitor under the conditions listed below.

(1) Corrosive gasses atmosphere (ex. Chlorine gas, Hydrogen sulfide gas, Ammonia gas, Sulfuric acid gas, Nitric oxide gas, etc.)

(2) In liquid (ex. water, oil, medical liquid,organic solvent, etc.)

(3) Dusty / dirty atmosphere

(4) Direct sunlight

(5) Static voltage nor electric/magnetic fields

(6) Direct sea breeze

(7) Other variations of the above

[1].Miniature rectangular shape.
[2].Color coded case facilitates identification of capacitance range.
[3].Designed for automatic placement in surface mount application.
[4].Designed to withstand flux baths and solder baths.
[5].Can be temporarily attached to PCB with adhesives.
[6].Can be reflow and flow soldering method.
[7].Stable characteristics over a wide frequency range.

Suntan is now a leading firm in the electronic component industry. Based on our unique design and processing technologies we offer a variety of ceramic products including 3mm ceramic trimmer capacitors, 5mm Trimmer Ceramic Capacitor, 6mm and 7mm Ceramic Trimmer Capacitor etc.

The following is one of our Ceramic Trimmer Capacitors,please see its features.If you are interested in other types of Ceramic Trimmer Capacitor,please visit www.suntan.com.hk for your reference.

5mm Ceramic Trimmer Capacitor Features

• As well as applications to small sized electronic apparatus, this series is designed for easy handing and is available with a variety of
• adjustment method (top, buttom, side and double sides).
• Wide mounting sizes and variable adjustment available
• Lots of capacity ranges,3pF through 90pF
• Sturdy mechanical structure against vibration or shock

Suntan Technology Company Limited
---All kinds of Capacitors

Trimmer capacitors (trimmers) are miniature variable capacitors. They are designed to be mounted directly onto the circuit board and adjusted only when the circuit is built.

A small screwdriver or similar tool is required to adjust trimmers. The process of adjusting them requires patience because the presence of your hand and the tool will slightly change the capacitance of the circuit in the region of the trimmer!

Trimmer capacitors are only available with very small capacitances, normally less than 100pF. It is impossible to reduce their capacitance to zero, so they are usually specified by their minimum and maximum values, for example 2-10pF.

Trimmers are the capacitor equivalent of presets which are miniature variable resistors.