您的位置：维库电子市场网 > Datasheet > MR051A561JAA

MR051A561JAA Datasheet

  • MR051A561JAA

  • Multiayer Ceramic Leaded Capacitors

  • 1094.15KB

  • 71页

  • AVX   AVX

阅览下载 纠错 0

扫码查看芯片数据手册

上传产品规格书

PDF预览

The Capacitor
The effect of the application of DC voltage is shown in
Figure 4. The voltage coefficient is more pronounced for
higher K dielectrics. These figures are shown for room tem-
perature conditions. The combination characteristic known
as voltage temperature limits which shows the effects of
rated voltage over the operating temperature range is
shown in Figure 5 for the military BX characteristic.
"Q" Factor
鈥淨鈥?vs. Frequency
2000
1600
1200
AVX
C0G (NP0)
T.C.
Cap. Change vs. D.C. Volts
AVX X7R T.C.
Capacitance Change Percent
2.5
0
-2.5
-5
-7.5
-10
25%
50%
75%
Percent Rated Volts
100%
800
400
AVX X7R T.C.
0
1
KHz
10
KHz
100
KHz
1
MHz
10
MHz
100
MHz
1
GHz
Frequency
Figure 7
Effects of Frequency 鈥?/div>
Frequency affects capacitance
and dissipation factor as shown in Figures 6 and 7.
Variation of impedance with frequency is an important con-
sideration for decoupling capacitor applications. Lead
length, lead configuration and body size all affect the
impedance level over more than ceramic formulation varia-
tions. (Figure 8)
Effects of Time 鈥?/div>
Class 2 ceramic capacitors change
capacitance and dissipation factor with time as well as
temperature, voltage and frequency. This change with time
is known as aging. Aging is caused by a gradual re-align-
ment of the crystalline structure of the ceramic and
produces an exponential loss in capacitance and decrease
in dissipation factor versus time. A typical curve of aging
rate for semistable ceramics is shown in Figure 9 and a
table is given showing the aging rates of various dielectrics.
If a ceramic capacitor that has been sitting on the shelf for
a period of time, is heated above its curie point, (125掳C for
4 hours or 150掳C for
1
鈦?/div>
2
hour will suffice) the part will
de-age and return to its initial capacitance and dissipation
factor readings. Because the capacitance changes rapidly,
immediately after de-aging, the basic capacitance
measurements are normally referred to a time period some-
time after the de-aging process. Various manufacturers use
different time bases but the most popular one is one day or
twenty-four hours after 鈥渓ast heat.鈥?Change in the aging
curve can be caused by the application of voltage and
other stresses. The possible changes in capacitance due to
de-aging by heating the unit explain why capacitance
changes are allowed after test, such as temperature
cycling, moisture resistance, etc., in MIL specs. The
application of high voltages such as dielectric withstanding
voltages also tends to de-age capacitors and is why
re-reading of capacitance after 12 or 24 hours is allowed in
military specifications after dielectric strength tests have
been performed.
Figure 4
Typical Cap. Change vs. Temperature
AVX X7R T.C.
Capacitance Change Percent
+20
+10
0VDC
0
-10
-20
-30
-55 -35
-15
+5
+25 +45 +65 +85 +105 +125
RVDC
Temperature Degrees Centigrade
Figure 5
Cap. Change vs. Frequency
Capacitance Change Percent
AVX C0G (NP0) T.C.
0
AVX X7R T.C.
-10
-20
-30
1
KHz
10
KHz
100
KHz
1
MHz
10
MHz
100
MHz
1
GHz
Frequency
Figure 6
6

MR051A561JAA相关型号PDF文件下载

您可能感兴趣的PDF文件资料

热门IC型号推荐

©2024 维库电子市场网（www.dzsc.com）　备案号：浙B2-20050339-1 经营许可证：浙B2-20210386版权声明
买家服务热线：0571-85317607 | 买家服务部QQ： QQ:1609526468
卖家服务热线：0571-85317607 | 卖家服务部QQ： QQ:331652727

扫码下载APP，
一键连接广大的电子世界。

在线人工客服

买家服务：
卖家服务：

0571-85317607

客服在线时间周一至周五
9:00-17:30

关注官方微信号，
第一时间获取资讯。

建议反馈
返回顶部

建议反馈

联系人：

联系方式：

按住滑块，拖拽到最右边
>>
感谢您向阿库提出的宝贵意见，您的参与是维库提升服务的动力！意见一经采纳，将有感恩红包奉上哦！

PDF纠错X

投诉电话：0571-85317607 投诉QQ：

如选匿名将无法为您反馈投诉结果，建议实名投诉！