CERAMIC CHIP CAPACTIORS NPO (COG) DIELECTRIC
APPLICATION
NPO (COG) dielectric properties; suited for precision circuits, requiring stable dielectric characteristics:
Negligible dependence of capacitance and dissipation factor on time, voltage, and frequency
Low-loss (High Q)
Predictable linear temperature coefficient
No piezoelectric behavior
General Specification
Operating temperature range
: –55
℃
~ +125
℃
Temperature coefficient:
0±30ppm/
℃
Capacitance Range:
0.5pF ~ 0.22uF
(Test condition: 1.0 ±0.2 Vrms, 1KHz, for≦1000pF use 1 MHz)
Capacitance Tolerance:
Preferred ±1% , ±2% ±5%, ±10%
. (10PF＜
: ±0.05pF, ±0.1pF, ±0.25pF, ±0.5Pf)
Rated Voltage:
25VDC, 50VDC, 100VDC, 250VDC, 500VDC, 1KVDC, 2KVDC, 3KVDC
Q value :
C＜30pF : Q≧400+20C, C≧30pF : Q≧1000 (Test condition: 1MHz, 1KHZ for C≧1000pF, 1Vrms, 25℃)
Insulation resistance:
100,000 MΩ or 1,000
Ω-F
min, whichever is less. (rated voltage applied at 25℃)
Dielectric strength:
> 250% of rated voltage for 10½100V, 200% for 200&250V, 150% for 500V, 120% for≧1000V
Characteristics
Capacitance changeΔC/C
25
versus
temperature T (tolerance range)
Capacitance changeΔC/C
0
versus
superimposed dc voltage V
Insulation resistance R
ins
versus
Temperature T
Capacitance changeΔC/C
1
versus time (aging rate)
22
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