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X7R Datasheet, PDF (1/4 Pages) EPCOS – Multilayer ceramic capacitor
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)
0805
5
C
103
M
A
T
2
Size
Voltage
Dielectric Capacitance Capacitance Failure
Terminations
(L" x W")
4V = 4
6.3V = 6
10V = Z
16V = Y
25V = 3
X7R = C
Code (In pF)
2 Sig. Digits +
Number of Zeros
Tolerance
J = ± 5%*
K = ±10%
M = ± 20%
Rate
A = Not
Applicable
T = Plated Ni
and Sn
7 = Gold Plated*
Z= FLEXITERM®**
50V = 5
*≤1μF only,
100V = 1
200V = 2
contact factory for
additional values
*Optional termination
500V = 7
**See FLEXITERM®
X7R section
NOTE: Contact factory for availability of Termination and Tolerance Options for Specific Part Numbers.
Contact factory for non-specified capacitance values.
Packaging
2 = 7" Reel
4 = 13" Reel
7 = Bulk Cass.
9 = Bulk
Contact
Factory For
Multiples
A
Special
Code
A = Std.
Product
X7R Dielectric�
Typical Temperature Coefficient
10
5
0
-5
-10
-15
-20
-25
-60 -40 -20 0 20 40 60 80 100 120 140
Temperature °C
Variation of Impedance with Cap Value�
Impedance vs. Frequency�
1,000 pF vs. 10,000 pF - X7R�
0805�
10.00
�
1,000 pF
10,000 pF
1.00
0.10
0.01
10
100
1000
Frequency, MHz
⌬ Capacitance vs. Frequency
+30
+20
+10
0
-10
-20
-30
1KHz
10 KHz
100 KHz
Frequency
1 MHz
10 MHz
Insulation Resistance vs Temperature
10,000
1,000
100
0
0
20
40
60
80
100 120
Temperature °C
Variation of Impedance with Chip Size�
Impedance vs. Frequency�
10,000 pF - X7R�
�
10
�
1206
0805
1210
1.0
Variation of Impedance with Chip Size�
Impedance vs. Frequency�
100,000 pF - X7R�
10
�
� 1206
0805
1210
1.0
0.1
0.1
.01
1
.01
10
100
1,000
1
10
100
1,000
Frequency, MHz
Frequency, MHz
17