- 4 -
(2) DC Bias Characteristic
The DC bias characteristics of X7R- and Y5V-characteristic MLCC capacitors are shown in
Fig.3 below:
At the measurement conditions of 25 degree, 1kHz, 1vrms, the capacitance of the
X7R-characteristic capacitor drops by a maximum of 60% according to DC bias voltage applied,
while the capacitance of the Y5V-characteristic capacitor drops as much as 90%.
The capacitance of MLCC capacitors decreases as applied DC bias voltage increases. Also
dissipation factors of those capacitors comes down as DC bias voltage goes up.
(a) Capacitance Change Ratio
(b) Dissipation Factor (DF)
Fig.3 DC Bias Characteristic
1206type 10uF 10V
-100
-80
-60
-40
-20
0
20
0
2
4
6
8
10
DC Bias[Vdc]
C
a
p
.c
h
a
n
g
e
[%
]
X7R
Y5V
1206type 10uF 10V
0.00
0.05
0.10
0.15
0.20
0.25
0
2
4
6
8
10
DC Bias[Vdc]
DF
X7R
Y5V
