1、常用电容电阻电感封装选型1 贴片电容C：100nF/ 50V X7R +/-10% 0805, -55到+125100nF / 25V X5R +/-10% 0805， +10-+85一 NPO电容器 NPO是一种最常用的具有温度补偿特性的单片陶瓷电容器。它的填充介质是由铷、钐和一些其它稀有氧化物组成的。 NPO电容器是电容量和介质损耗最稳定的电容器之一。在温度从-55到+125时容量变化为030ppm/，电容量随频率的变化小于0.3C。NPO电容的漂移或滞后 小于0.05%，相对大于2%的薄膜电容来说是可以忽略不计的。其典型的容量相对使用寿命的变化小于0.1%。NPO电容器随封装形式不同其电
2、容量和介质损耗随频率变化的特性也不同，大封装尺寸的要比小封装尺寸的频率特性好。下表给出了NPO电容器可选取的容量范围。 封装DC=50VDC=100V 08050.5-1000pF0.5-820pF 12060.5-1200pF0.5-1800pF 1210560-5600pF560-2700pF 22251000pF-0.033F1000pF-0.018F NPO电容器适合用于振荡器、谐振器的槽路电容，以及高频电路中的耦合电容。 二 X7R电容器 X7R电容器被称为温度稳定型的陶瓷电容器。当温度在-55到+125时其容量变化为15%，需要注意的是此时电容器容量变化是非线性的。 X7R电容器的
3、容量在不同的电压和频率条件下是不同的，它也随时间的变化而变化，大约每10年变化1%C，表现为10年变化了约5%。 X7R电容器主要应用于要求不高的工业应用，而且当电压变化时其容量变化是可以接受的条件下。它的主要特点是在相同的体积下电容量可以做的比较大。下表给出了X7R电容器可选取的容量范围。 封装DC=50VDC=100V 0805330pF-0.056F330pF-0.012F 12061000pF-0.15F1000pF-0.047F 12101000pF-0.22F1000pF-0.1F 22250.01F-1F0.01F-0.56F 三 Z5U电容器 Z5U电容器称为”通用”陶瓷单片电
4、容器。这里首先需要考虑的是使用温度范围，对于Z5U电容器主要的是它的小尺寸和低成本。对于上述三种陶瓷单片电容起来说在相同的体积下Z5U电容器有最大的电容量。但它的电容量受环境和工作条件影响较大，它的老化率最大可达每10年下降5%。 尽管它的容量不稳定，由于它具有小体积、等效串联电感（ESL）和等效串联电阻（ESR）低、良好的频率响应，使其具有广泛的应用范围。尤其是在退耦电路的应用中。下表给出了Z5U电容器的取值范围。 封装DC=25VDC=50V 08050.01F-0.12F0.01F-0.1F 12060.01F-0.33F0.01F-0.27F 12100.01F-0.68F0.01F-
5、0.47F 22250.01F-1F0.01F-1F Z5U电容器的其他技术指标如下: 工作温度范围+10-+85 温度特性+22%-56% 介质损耗最大4% 四 Y5V电容器 Y5V电容器是一种有一定温度限制的通用电容器，在-30到85范围内其容量变化可达+22%到-82%。 Y5V的高介电常数允许在较小的物理尺寸下制造出高达4.7F电容器。 Y5V电容器的取值范围如下表所示 封装DC=25VDC=50V 08050.01F-0.39F0.01F-0.1F 12060.01F-1F0.01F-0.33F 12100.1F-1.5F0. 01F-0.47F 22250.68F-2.2F0.68
6、F-1.5F Y5V电容器的其他技术指标如下: 工作温度范围-30-+85 温度特性+22%-82% 介质损耗最大5% 钽电容10UF/ 10V A型 , -55到+125100UF/10V C型 ， +10-+85470uF/6.3V D型电容量85C时DC额定电压（VR）FCode2.5V (e)4V (G)6.3V (J)10V (A)16V (C)20V (D)25V (E)35V (V)50V (T)0.100.150.22104154224AAAAA/BA/B0.330.470.68334474684AAAA/BA/BBB/CB/C1.01.52.2105155225AAAA/BA
7、A/BA/BA/BA/B/CA/B/CB/CC/DC/D3.34.76.8335475685AAAA/BA/BA/BA/BA/BA/B/CA/BBB/CB/CB/C/DC/DC/DDD101522106156226AAAAA/BA/BA/B/CA/B/CB/C/DB/CB/CB/C/DC/DC/DC/DC/D/EC/DD/ED/EEV334768336476686AAAABAA/B/CB/CA/B/CB/CB/CB/C/DC/DC/DC/DC/D/ED/ED/ED/EE/VD/E/VE/VV100150220107157227BBB/DBB/CB/C/DB/CC/D C/D/EC/DC/D/E
8、D/ED/ED/E/VE/VD/E/VE/VV330470680337470680DC/DD/EC/DD/E D/ED/ED/E/V E/VD/E/VE/V100015002200108158228D/ED/E/VVD/E/VE/VV电解电容 470UF/16V/8*11.5MM 470UF/50V/10*20MM电解电容封装尺寸图W.V.（V）Cap.(20%)(uF)Case size（尺寸）Specification(规格）Lead Length（导线长度）Dia.(mm)Length(mm)Ripplecurrent(120Hz)(+105）（mA)tan (120Hz)(+20）En
9、du-rance(hours)LeadDia.(mm)Lead Space脚间距Straight(mm)Taping*B(mm)Taping*i(mm)耐压容量电容直径电容长度最大电流寿命/时管脚尺寸6.32205111400.2810000.52.0 5.0 2.54706.311.22300.2810000.52.55.0 2.51000811.53800.2810000.63.55.0 220010167100.30 20000.65.0 5.0 330010208400.3220000.65.0 5.0 470012.52010900.3420000.65.0 5.0 680012.5
10、2513500.3820000.65.0 5.0 10000162516500.4620000.87.57.5150001631.520100.5620000.87.5220001835.523500.70 20000.87.5103306.311.22000.2410000.52.55.0 2.5470811.52500.2410000.63.55.0 10001012.54600.2420000.65.0 5.0 220010207600.2620000.65.0 5.0 330012.52010000.2820000.65.0 5.0 470012.52512600.30 20000.6
11、5.0 5.0 6800162515700.3420000.87.57.5100001631.518900.4220000.87.5150001835.521800.5220000.87.5161005111100.20 10000.52.0 5.0 2.52206.311.21800.20 10000.52.55.0 2330811.52600.20 10000.63.55.0 470811.53100.20 10000.63.55.0 100010165600.20 20000.65.0 5.0 220012.5209200.2220000.65.0 5.0 330012.52511700
12、.2420000.65.0 5.0 4700162514800.2620000.87.57.568001631.517800.30 20000.87.5100001835.520600.3820000.87.52547511910.1610000.52.0 5.0 2.51006.311.21300.1610000.52.55.0 2.5220811.52300.1610000.63.55.0 330811.53100.1610000.63.55.0 4701012.53800.1620000.65.0 5.0 100010206800.1620000.65.0 5.0 220012.5251
13、0900.1820000.65.0 5.0 3300162514000.20 20000.87.57.547001631.517500.2220000.87.568001835.520400.2620000.87.53547511900.1410000.52.0 5.0 2.51006.311.21500.1410000.52.55.0 2.5220811.52700.1410000.63.55.0 3301012.53500.1420000.65.0 5.0 47010164600.1420000.65.0 5.0 100012.5208100.1420000.65.0 5.0 220016
14、2512600.1620000.87.57.533001631.516100.1820000.87.547001835.519100.20 20000.87.5500.15111.10.1210000.52.0 5.0 2.50.225112.30.1210000.52.0 5.0 2.50.335113.50.1210000.52.0 5.0 2.50.4751150.1210000.52.0 5.0 2.51511100.1210000.52.0 5.0 2.52.2511180.1210000.52.0 5.0 2.53.3511220.1210000.52.0 5.0 2.54.751
15、1260.1210000.52.0 5.0 2.510511390.1210000.52.0 5.0 2.522511650.1210000.52.0 5.0 2.533511900.1210000.52.0 5.0 2.5476.311.21100.1210000.52.55.0 2.5100811.51800.1210000.63.55.0 2201012.53000.1220000.65.0 5.0 33010164100.1220000.65.0 5.0 47010205300.1220000.65.0 5.0 100012.5259500.1220000.65.0 5.0 22001
16、631.514700.1420000.87.533001835.517700.1620000.87.56310511460.10 10000.52.0 5.0 2.522511710.10 10000.52.0 5.0 2.5336.311.21000.10 10000.52.55.0 2.5476.311.21200.10 10000.52.55.0 2.51001012.52150.10 20000.65.0 5.0 22010163350.10 20000.65.0 5.0 33010205100.10 20000.65.0 5.0 47012.5206400.10 20000.65.0
17、 5.0 100016259300.10 20000.87.57.522001835.516100.1220000.87.51000.4751190.0810000.52.0 5.0 2.51511140.0810000.52.0 5.0 2.52.2511210.0810000.52.0 5.0 2.53.3511310.0810000.52.0 5.0 2.54.7511380.0810000.52.0 5.0 2.5106.311.2540.0810000.52.55.0 2.5226.311.2930.0810000.52.55.0 2.533811.51300.0810000.63.
18、55.0 471012.51650.0820000.65.0 5.0 10010202650.0820000.65.0 5.0 22012.5254400.0820000.65.0 5.0 33016255400.0820000.87.57.5 47016257150.0820000.87.57.5 10001835.59850.0820000.87.516016.311.2170.1520000.52.55.0 2.52.26.311.2250.1520000.52.55.0 2.53.36.311.2360.1520000.52.55.0 2.54.76.311.2430.1520000.
19、52.55.0 2.5101012.5700.1520000.65.0 5.0 2210201300.1520000.65.0 5.0 3310201800.1520000.65.0 5.0 4712.5202200.1520000.65.0 5.0 10016253350.1520000.87.57.52201631.55400.1520000.87.53301831.57050.1520000.87.520016.311.2170.1520000.52.55.0 2.52.26.311.2250.1520000.52.55.0 2.53.36.311.2360.1520000.52.55.
20、0 2.54.7811.5500.1520000.63.55.0 101016800.1520000.65.0 5.0 2210201400.1520000.65.0 5.0 3312.5201900.1520000.65.0 5.0 4712.5202200.1520000.65.0 5.0 10016253350.1520000.87.57.52201831.55750.1520000.87.525016.311.2170.1520000.52.55.0 2.52.26.311.2290.1520000.52.55.0 2.53.3811.5420.1520000.63.55.0 4.7811.5500.1520000.63.55.0 101016880.1520000.65.0 5.0 2212.5201550.1520000.65.0 5.0 3312.5201900.1520000.65.0 5.0 4712.5252300.15
