These specifications are applied to Ceramic Trimmer Capacitors with the ceramic dielectric, which are used for the electric and electronic apparatus and communication equipments
The part number consists of category, dimension , temperature characteristics and maximum nominal
STCt6tt100tttRt( 050 is 05u00d71000 = 5 PF )
( a )t( b )t( c )t( d )
(a)tCategory: Ceramic Trimmer Capacitor
(b)tOuter size : Plastic casing type :6mm
(c)tMaximum nominal capacitance : PF unit in 3 digits (The1st and 2nd figures
indicate the significant figures, but the 3rd indicates the number of naught.)
(D) Adjusting types : R (Reverse Type) or Blank (Normal Type)
3.Rated voltage : 100VDC
4.Temperature range : -25degreeto +85degree
5.Test circumstance :Test should be done at 20degree with relative humidity at 65%. However, subjected to special requirement,the ideal range should be within u00b15degree and humidity from 45degreeto 85degree
Product Specification / Models
6. Electrical Characteristic
6.1tCapacitance Drift After Adjustment
Rotation shall be made for 5 cycles for 180 degree at a rate of 20 r/mm, a capacitance value difference woul d be found immediately. Once the shaft is stopped at the position of the maximum capacit-ance value after 24 hours later. The specification range should be within 5pF, 10pF u00b1 1.5% and 30pF u00b1 2%.
When measured the capacitance at 1MHzu00b110%, it reached the heat balance at each temperature changed to
.+20degree to -25degree with adjusting to 80%~90% of the maximum capacitance, the capacitance change is based on the capacitance at +20degree of 2nF, stage of changing the temperature as above.
6.3tQ (Quality factor)
When measured at 20degree, 0.5V to 5V, 1MHz and maximum capacitance ,the Q values are listed in the attached specification.
When applied 100VDC between terminals for 1 minute at the maximum capacitance, the insulation resistance shall be more than 10,000M.
6.5 Withstanding Voltage
There is no abnormality after applied 220VDC (1ess than 5mA) for 5 seconds between the terminals.
7.tStructure and mechanical characteristics
7.1 Configuration and Dimensions
Please refer to the attached drawings.
7.2 Strength of Terminals
When applied a power to the terminals to any direction slowly and kept at 0.5 kg for 10 seconds, the terminals shall not be loosen or broken mechanically.
The torque test should be done at least for l round tuning from 35gf.cm to 100gf.cm for the Normal Type, or 15gf.cm to 100gf.cm for the Reverse Type . Please note that it might cause the torque will decrease against the rotation increase.
7.4 Solder ability
When dipped the terminals into the soldering pot at 255 degreeu00b15 degreefor 2u00b10.5 seconds. There is almost 75% of the total dipped surface are covered with the new solder.( Caution: Keep the soldering conditions as above. If the soldering conditions are not suitable (excessive time, excessive temperature and etc.), it's performance will be seriously deviated.
Please refer to the color code in the attached speci
Application / Models
This STC series is SMD type, miniature size ceramic trimmer capacitor, which are widely used for electronic
communication and electronic applied equipment.
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