◆OPERATINGTEMPERATURE RANGE: -25℃ to +85℃
◆RATED WORKING VOLTAGE: 100VDC
◆WITHSTANDING VOLTAGE: 110VDC 220VDC
◆SOLDERING TEMPERATURE: 250 ± 5℃
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
CHCA 3R0 2A R
( a ) ( b ) 3 ( c )
(b) Maximum nominal capacitance : PF unit in 3 digits (The1st and 2nd figures
indicate the significant figures, but the 3rd indicates the number of naught.)
( c ) Adjusting types : R (Reverse Type) or Blank (Normal Type)
- Ratedvoltage : 100VDC
- Temperaturerange : -25℃to +85℃
- Testcircumstance :Test should be done at 20℃ with relative humidity at 65%. However, subjected to special requirement,the ideal range should be within ±5℃ and humidity from 45℃to 85℃
- CapacitanceDrift After Adjustment
Rotation shall be made for 5 cycles for 180°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 ± 1.5% and 30pF ± 2%.
When measured the capacitance at 1MHz±10%, it reached the heat balance at each temperature changed to
.+20℃to -25℃with adjusting to 80%~90% of the maximum capacitance, the capacitance change is based on the capacitance at +20℃ of 2nF, stage of changing the temperature as above.
- Q(Quality factor)
When measured at 20℃, 0.5V to 5V, 1MHz and maximum capacitance , the Q values are l isted 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.
There is no abnormality after applied 220VDC (1ess than 5mA) for 5 seconds between the terminals.
Structure and mechanical characteristics
- Configurationand Dimensions
Please refer to the attached drawings.
- Strengthof 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.
When dipped the terminals into the soldering pot at 255℃±5℃ for 2±0. 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 t ime, excessive temperature and etc.), i t’s performance will be seriously deviated.
Please refer to the color code in the attached specifications.
6mm Ceramic Trimmer Capacitors
|Part No.||Capacitance(pF)||Q(1MHz, Cmax)||Temp.Coeff ppm/℃||Rated Voltage||Withstanding Voltage||
|CHCA4002A(R)||7.0max||40||+50%-0%||300 min||N 1200±500||100Vdc||220Vdc||Yellow|
These specification are applied to ceramic trimmer capacitor with the ceramic dieletric ,which are used for the electric and electronic apparatus and communication equipments.