Data Sheet
CERAMIC CHIP CAPACITORS 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 (DC): 25V, 50V, 100V, 200V, 250V, 500V, 630V, 1KV, 2KV, 3KV, 4KV
Q value : C<30pF : Q
≧
400+20C, C
≧
30pF : Q
≧
1000 (Test condition: 1MHz, 1KHZ for C
≧
1000pF, 1Vrms, 25℃)
Insulation resistance: 10G or 500 -F min, whichever is less. (rated voltage applied at 25℃)
Dielectric strength: > 250% of rated voltage for 50~100V, 200% for 200&250V, 150% for 500V, 120% for
≧
1000V
Characteristics
Capacitance change∆C/C
25
versus
temperature T (tolerance range)
Capacitance change∆C/C
0
versus
superimposed dc voltage V
Insulation resistance R
ins
versus
Temperature T
Capacitance change∆C/C
1
versus time
(aging rate)
22