常见贴片电容选型资料.doc

贴片电容简述通常大家所说的贴片电容是指片式多层陶瓷电容 (Multilayer Ceramic Capacitors)，简称MLCC，又叫做独石电容。 它是在若干片陶瓷薄膜坯上被覆以电极桨材料，叠合后一次烧结成一块不可分割的整体，外面再用树脂包封而成的。具有小体积、大容量、Q值高、高可靠和耐高温等优点。同时也具有容量误差较大、温度系数很高的缺点。一般用在噪声旁路、滤波器、积分、振荡电路。 常规贴片电容按材料分为COG(NPO)、X7R、Y5V，常见引脚封装有0201、0402、0603、0805、1206、1210、1812、2010。 贴片电容基本结构多层陶瓷电容(MLCC)是由平行的陶瓷材料和电极材料层叠而成。见下图：贴片电容封装尺寸封装(L) 长度 公制(毫米) 英制(英寸)(W) 宽度公制(毫米) 英制(英寸)(t) 端点公制(毫米) 英制(英寸)0201 0.60 0.03(0.024 0.001)0.30 0.03(0.011 0.001)0.15 0.05(0.006 0.002)0402 1.00 0.10(0.040 0.004)0.50 0.10(0.020 0.004)0.25 0.15(0.010 0.006)0603 1.60 0.15(0.063 0.006)0.81 0.15(0.032 0.006)0.35 0.15(0.014 0.006)0805 2.01 0.20(0.079 0.008)1.25 0.20(0.049 0.008)0.50 0.25(0.020 0.010)1206 3.20 0.20(0.126 0.008)1.60 0.20(0.063 0.008)0.50 0.25(0.020 0.010)1210 3.20 0.20(0.126 0.008)2.50 0.20(0.098 0.008)0.50 0.25(0.020 0.010)1812 4.50 0.30(0.177 0.012)3.20 0.20(0.126 0.008)0.61 0.36(0.024 0.014)1825 4.50 0.30(0.177 0.012)6.40 0.40(0.252 0.016)0.61 0.36(0.024 0.014)2225 5.72 0.25(0.225 0.010)6.40 0.40(0.252 0.016)0.64 0.39(0.025 0.015)贴片电容分类多层陶瓷电容(MLCC)根据材料分为Class 1和Class 2两类。Class 1是温度补偿型，Class 2是温度稳定型和普通应用的。 Class 1 - Class 1或者温度补偿型电容通常是由钛酸钡不占主要部分的钛酸盐混合物构成。它们有可预见的温度系数，通常没有老化特性。因此它们是可用的最稳定的电容。最常用的Class 1多层陶瓷电容是COG(NPO)温度补偿型电容(0 ppm/C). Class 2 - EIA Class 2 电容通常也是由钛酸钡化合物组成。Class 2电容有很大的电容容量和温度稳定性。 最普通最常用的Class 2电容电解质是X7R和Y5V。 在温度范围 -55C到 125C之间，X7R能提供仅有15%变化的的中等容量的电容容量。它最适合应用在温度范围宽，电容量要求稳定的场合。 Y5V能提供最大的电容容量，常用在环境温度变化不大的地方。 在温度范围-30C to 85C之间，Y5V电容值的变化是22% to -82%。 所有的Class 2电容的电容容量受以下几个条件影响：温度变化、操作电压（直流和交流）、频率。 贴片电容 Class 2 EIA代码对Class 2材料电容的容量随温度变化，EIA可以通过3个符号代码来表述。 第一个符号表示工作温度范围的下限，第二个符号表示工作温度的上限， 第三个符号表示在这个温度内允许容量变化的百分比。以下表提供了EIA系统详细的描述。 EIA CODE容量改变百分比时温度范围 RS198 温度范围X7X6X5Y5Z5-55C to +125C-55C to +105C-55C to +85C-30C to +85C+10C to +85C Code容量改变百分比 DEFPRSTUV 3.3%4.7%7.5%10%15%22%+22%,-33%+22%,- 56%+22%,-82% 比如：一个电容的容量想要在25C时增加不超过7.5%和在-30C to +85C时减少不超过7.5%。EIA代码就是Y5F。 贴片电容生产厂家生产厂家AVX风华国巨罗姆华新Vishay三星电机太阳诱电村田丸和深圳宇阳松下京瓷潮州三环大连达利凯灵通电子Y5V贴片电容简述Y5V贴片电容属于EIA规定的Class 2类材料的电容。它的电容量受温度、电压、时间变化影响大。 Y5V贴片电容特性 具有较差的电容量稳定性，在-2585工作温度范围内，温度特性为+30%，-80%。 层叠独石结构，具有高可靠性。 优良的焊接性和和耐焊性，适用于回流炉和波峰焊。 应用于温度变化小的退耦、隔直等电路中。 Y5V贴片电容容量范围厚度与符号对应表 符号ACEGJKMNPQXYZ最大厚度毫米(英寸)0.33(0.013)0.56(0.022)0.71(0.028)0.86(0.034)0.94(0.037)1.02(0.040)1.27(0.050)1.40(0.055)1.52(0.060)1.78(0.070)2.29(0.090)2.54(0.100)2.79(0.110)02011210 Y5V贴片电容选型表封装尺寸 020104020603080512061210工作电压 6.3106.3101625506.3101625506.3101625506.3101625506.310162550电容量(pF)820100022004700 AAAC电容量(uF)0.0100.0220.047 AAAACCCCCGGGG0.100.150.22 CCCC G GGGJKKN0.471.02.2 CCGGG G GGNNKNNNNMMMMN4.710.022.047.0 NNNMQMQQMQXXXQNQ工作电压 6.3106.3101625506.3101625506.3101625506.3101625506.310162550封装尺寸 020104020603080512061210X7R贴片电容简述X7R贴片电容属于EIA规定的Class 2类材料的电容。它的容量相对稳定。 X7R贴片电容特性 具有较高的电容量稳定性，在-55125工作温度范围内，温度特性为15%。 层叠独石结构，具有高可靠性。 优良的焊接性和和耐焊性，适用于回流炉和波峰焊。 应用于隔直、耦合、旁路、鉴频等电路中。 X7R贴片电容容量范围厚度与符号对应表 符号ACEGJKMNPQXYZ最大厚度毫米(英寸)0.33(0.013)0.56(0.022)0.71(0.028)0.86(0.034)0.94(0.037)1.02(0.040)1.27(0.050)1.40(0.055)1.52(0.060)1.78(0.070)2.29(0.090)2.54(0.100)2.79(0.110)02011206 X7R贴片电容选型表封装尺寸 02010402060308051206工作电压 16162550101625501001016255010020010162550100200500电容量(pF)100150220 AAAC330470680 AAACCCGGGGGGJJJJJJJJJJJJJJJJJJKKK100015002200 ACCCGGGGGGJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJKMM330047006800 CCCCCGGGGJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJMMP电容量(uF)0.0100.0150.022 CCCGGGGJJJJJJJJJJJJJJJJJMJJJJJJJJJJJJJJJJMMP0.0330.0470.068 GGGGJJJJJJJJJJJJMMJJJJJJJJJJJJJJJMMP0.100.150.22 GGGGGJJJJJJJJMJJJJJJJJJJJJJM0.330.470.68 MNNMMJMMJMMMMM1.01.52.2 NMPQMQ工作电压 16162550101625501001016255010020010162550100200500封装尺寸 0201040206030805120612102225 X7R贴片电容选型表封装尺寸 12101812182522202225工作电压 1016255010020050050100200500501006.35010020050100电容量(pF)100015002200 JJJJJJJJJJJJMM330047006800 JJJJJJJJJJJJJJJJJJMMM电容量(uF)0.0100.0150.022 JJJJJJJJJJJJJJJJJJMPQKKKKKKKKKKPPMMMMMMXXXXXXXXXXXXMMMPPP0.0330.0470.068 JJJJJJJJJJJJJJJJJMKKKKKKKKKXZMMMMMMXXXXXXXXXXXXMMMPPP0.100.150.22 JJJJJJJJJJJJJMPMKKKKKKKPPMMMMMMXXXXXXXXXXXMMMPPP0.330.470.68 JMMJMMJMPJMXZZZKKMMPQMMMMMXXXXXXXXXMMMPPP1.01.52.2 NNNNPXXZMZXMMZMMMPX3.34.710 QZZ工作电压 1016255010020050050100200500501006.35010020050100封装尺寸 12101812182522202225NPO贴片电容简述NPO(COG)贴片电容属于Class 1温度补偿型电容。它的容量稳定，几乎不随温度、电压、时间的变化而变化。尤其适用于高频电子电路。 NPO(COG)贴片电容特性 具有最高的电容量稳定性，在-55125工作温度范围内,温度特性为：030ppm/(COG）、060ppm/(COH）。 层叠独石结构，具有高可靠性。 优良的焊接性和和耐焊性，适用于回流炉和波峰焊。 应用于各种高频电路,如:振荡、计时电路等。 NPO贴片电容容量范围厚度与符号对应表 符号ACEGJKMNPQXYZ最大厚度毫米(英寸)0.33(0.013)0.56(0.022)0.71(0.028)0.86(0.034)0.94(0.037)1.02(0.040)1.27(0.050)1.40(0.055)1.52(0.060)1.78(0.070)2.29(0.090)2.54(0.100)2.79(0.110)02011206 COG(NPO)贴片电容选型表封装尺寸 02010402060308051206工作电压 1016251625506.32550100162550100200162550100200500电容量(pF)0.51.01.21.5 AAAACCCCCCCCCCCCGGGGGGGGGGGGGGGGJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJ1.82.22.7 AAACCCCCCCCCGGGGGGGGGGGGJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJ3.33.94.7 AAACCCCCCCCCGGGGGGGGGGGGJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJ5.66.88.2 AAACCCCCCCCCGGGGGGGGGGGGJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJ101215 AAACCCCCCCCCGGGGGGGGGGGGJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJ182227 AAACCCCCCCCCGGGGGGGGGGGGJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJ333947 AAACCCCCCCCCGGGGGGGGGGGGJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJ566882 AAACCCCCCCCCGGGGGGGGGGGGJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJ100120150 ACCCCCCCCCGGGGGGGGGGGGJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJ180220270 CCCCCCCGGGGGGGGGGGGJJJJJJJJJJJJJJMJJJJJJJJJJJJJJJJMM330390470 CGGGGGGGGGGJJJJJJJJJJJJMMMJJJJJJJJJJJJJJJMMM560680820 GGGGGGGGGJJJJJJJJJJJJMMJJJJJJJJJJJJJJMMP100012001500 GGGJJJJJJJJJJJJJJJJJJJJJMQQQ180022002700 JJJJJJJMMJJJJJJMMMMPP330039004700 NNNNNNMMJJJJJJMMMPPP560068008200 NNNNJMMJMMM100001200015000 NMM工作电压 1016251625506.32550100162550100200162550100200500封装尺寸 0201040206030805120612102225 COG(NPO)贴片电