| 18121C334KAT2A |
17
X7R Dielectric
General Specifications
X7R formulations are called “temperature stable” ceramics and
fall into EIA Class II materials. X7R is the most popular of these
intermediate dielectric constant materials. Its temperature varia-
tion of capacitance is within ±15% from -55°C to +125°C. This
capacitance change is non-linear.
Capacitance for X7R varies under the influence of electrical op-
erating conditions such as voltage and frequency.
X7R dielectric chip usage covers the broad spectrum of
industrial applications where known changes in capacitance
due to applied voltages are acceptable.
PART NUMBER (see page 2 for complete part number explanation)
% Cap Change
10
-60 -40 -20 0 20 40 60 80 100 120 140
Temperature °C
X7R Dielectric?
Typical Temperature Coefficient
5
0
-5
-10
-15
-20
-25
% Capacitance
+10
+20
+30
0
-10
-20
-30
1KHz 10 KHz 100 KHz 1 MHz 10 MHz
Frequency
Capacitance vs. Frequency
Insulation Resistance (Ohm-Farads)
1,000
10,000
100
0
0 20 120 40 60 80
Temperature |
131.81K |
AVX[AVX Corporation] |
 |
