常用電容電阻電感設(shè)計(jì)選型

1、1 貼片電容C：100nF/ 50V X7R +/-10% 0805, -55到+125>100nF / 25V X5R +/-10% 0805， +10-+85一 NPO電容器         NPO是一種最常用的具有溫度補(bǔ)償特性的單片陶瓷電容器。它的填充介質(zhì)是由銣、釤和一些其它稀有氧化物組成的。         NPO電容器是電容量和介質(zhì)損耗最穩(wěn)定的電容器之一。在溫度從-55到+125時(shí)容量變化為0±30ppm/，電容量隨頻率的變化小于

2、±0.3C。NPO電容的漂移或滯后         小于±0.05%，相對(duì)大于±2%的薄膜電容來(lái)說(shuō)是可以忽略不計(jì)的。其典型的容量相對(duì)使用壽命的變化小于±0.1%。NPO電容器隨封裝形式不同其電容量和介質(zhì)損耗隨頻率變化的特性也不同，大封裝尺寸的要比小封裝尺寸的頻率特性好。下表給出了NPO電容器可選取的容量范圍。        封裝DC="50V"DC="100V"   

3、     08050.5-1000pF0.5-820pF        12060.5-1200pF0.5-1800pF        1210560-5600pF560-2700pF        22251000pF-0.033F1000pF-0.018F        NPO電容器適合用于振蕩器、諧振器

4、的槽路電容，以及高頻電路中的耦合電容。              二 X7R電容器        X7R電容器被稱為溫度穩(wěn)定型的陶瓷電容器。當(dāng)溫度在-55到+125時(shí)其容量變化為15%，需要注意的是此時(shí)電容器容量變化是非線性的。        X7R電容器的容量在不同的電壓和頻率條件下是不同的，它也隨時(shí)間的變化而變化，大約每10年變化1%C，表現(xiàn)為10年變化了約5%。

5、        X7R電容器主要應(yīng)用于要求不高的工業(yè)應(yīng)用，而且當(dāng)電壓變化時(shí)其容量變化是可以接受的條件下。它的主要特點(diǎn)是在相同的體積下電容量可以做的比較大。下表給出了X7R電容器可選取的容量范圍。        封裝DC="50V"DC="100V"        0805330pF-0.056F330pF-0.012F      

6、;  12061000pF-0.15F1000pF-0.047F        12101000pF-0.22F1000pF-0.1F         22250.01F-1F0.01F-0.56F                 三 Z5U電容器    &#

7、160;     Z5U電容器稱為”通用”陶瓷單片電容器。這里首先需要考慮的是使用溫度范圍，對(duì)于Z5U電容器主要的是它的小尺寸和低成本。對(duì)于上述三種陶瓷單片電容起來(lái)說(shuō)在相同的體積下Z5U電容器有最大的電容量。但它的電容量受環(huán)境和工作條件影響較大，它的老化率最大可達(dá)每10年下降5%。         盡管它的容量不穩(wěn)定，由于它具有小體積、等效串聯(lián)電感（ESL）和等效串聯(lián)電阻（ESR）低、良好的頻率響應(yīng)，使其具有廣泛的應(yīng)用范圍。尤其是在退耦電路的應(yīng)用中。下表給出了Z5U電容器的取值范圍。&

8、#160;        封裝DC="25V"DC="50V"         08050.01F-0.12F0.01F-0.1F         12060.01F-0.33F0.01F-0.27F         12100.01F-0.68F0.01F-0.47F 

9、0;       22250.01F-1F0.01F-1F         Z5U電容器的其他技術(shù)指標(biāo)如下:         工作溫度范圍+10-+85         溫度特性+22%-56%         介質(zhì)損耗最大4%    &#

10、160;           四 Y5V電容器         Y5V電容器是一種有一定溫度限制的通用電容器，在-30到85范圍內(nèi)其容量變化可達(dá)+22%到-82%。         Y5V的高介電常數(shù)允許在較小的物理尺寸下制造出高達(dá)4.7F電容器。         Y5V電容器的取值范圍如下表所示&

11、#160;        封裝DC="25V"DC="50V"         08050.01F-0.39F0.01F-0.1F         12060.01F-1F0.01F-0.33F         12100.1F-1.5F0.     

12、0;   01F-0.47F         22250.68F-2.2F0.68F-1.5F         Y5V電容器的其他技術(shù)指標(biāo)如下:         工作溫度范圍-30-+85         溫度特性+22%-82%         介質(zhì)損耗最大

13、5%   鉭電容10UF/ 10V A型 , -55到+125100UF/10V C型 ， +10-+85470uF/6.3V D型電容量85°C時(shí)DC額定電壓（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/C1.0  1.5  2.2  105155225AAAA/BAA/B

14、A/BA/BA/B/CA/B/CB/CC/DC/D3.3  4.7  6.8  335475685AAAA/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/VV100150220107157227B

15、BB/DBB/CB/C/DB/CC/D C/D/EC/DC/D/ED/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電解電容 470UF/16V/8*11.5MM 470UF/50V/10*20MM電解電容封裝尺寸圖W.V.（V）Cap.(±20%)(uF)Case size（尺寸）Specification(規(guī)格）Lead Length（導(dǎo)線長(zhǎng)度）Dia.(mm)Length(mm)Ripplecur

16、rent(120Hz)(+105）（mA)tan (120Hz)(+20）Endu-rance(hours)LeadDia.(mm)Lead Space腳間距Straight(mm)Taping*B(mm)Taping*i(mm)耐壓容量電容直徑電容長(zhǎng)度最大電流壽命/時(shí)管腳尺寸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 47

17、0012.52010900.3420000.65.0 5.0 680012.52513500.3820000.65.0 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 330012.52010000.2820

18、000.65.0 5.0 470012.52512600.30 20000.65.0 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 220012.5

19、209200.2220000.65.0 5.0 330012.52511700.2420000.65.0 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 10

20、0010206800.1620000.65.0 5.0 220012.52510900.1820000.65.0 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

21、 100012.5208100.1420000.65.0 5.0 2200162512600.1620000.87.57.533001631.516100.1820000.87.547001835.519100.20 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

22、 2.53.3511220.1210000.52.0 5.0 2.54.7511260.1210000.52.0 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.

23、0 100012.5259500.1220000.65.0 5.0 22001631.514700.1420000.87.533001835.517700.1620000.87.56310511460.10 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 33010205100.10 200

24、00.65.0 5.0 47012.5206400.10 20000.65.0 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 2.5226.311.2930.081

25、0000.52.55.0 2.533811.51300.0810000.63.55.0 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 2.53.36.311.2360.15

26、20000.52.55.0 2.54.76.311.2430.1520000.52.55.0 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.

27、52.55.0 2.53.36.311.2360.1520000.52.55.0 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 2.52.26.311.2290.1520000.52.5

28、5.0 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 4712.5252300.1520000.65.0 5.0 1001631.53650.1520000.87.535016.311.2180.20 20000.52.55.0 2.52.2811.5310.20 20000.63.55.0 3.31012.5380.20 20000.65.0 5.0

29、 4.71016500.20 20000.65.0 5.0 101020820.20 20000.65.0 5.0 2212.5201300.20 20000.65.0 5.0 3316251950.20 20000.87.57.54716252300.20 20000.87.57.51001831.53750.20 20000.87.540016.311.2180.2420000.52.55.0 2.52.2811.5300.2420000.63.55.0 3.31012.5400.2420000.65.0 5.0 4.71016500.2420000.65.0 5.0 101020800.

30、2420000.65.0 5.0 2212.5251450.2420000.65.0 5.0 3316251950.2420000.87.57.5471631.52500.2420000.87.54501811.5180.2420000.63.55.0 2.21012.5290.2420000.65.0 5.0 3.31016410.2420000.65.0 5.0 4.71020490.2420000.65.0 5.0 1012.520750.2420000.65.0 5.0 2216251150.2420000.87.57.5331631.51550.2420000.87.57.52 R：

31、（1K 1% 1/8W 0805）5和1電阻封裝尺寸與功率關(guān)系,通常來(lái)說(shuō):0201 1/20W 0402 1/16W0603 1/10W 0805 1/8W 1206 1/4W 電容電阻外形尺寸與封裝的對(duì)應(yīng)關(guān)系是: 0402=1.0x0.5 0603=1.6x0.8 ：0.08英寸（換算成mm=0.08*24.50=1.96mm）0805=2.0x1.2 1206=3.2x1.6 1210=3.2x2.5 1812=4.5x3.2  微型貼片電阻上的代碼一般標(biāo)為3位數(shù)或4位數(shù)的，3位數(shù)精度為5%，4位數(shù)的精度為1%，請(qǐng)大家根據(jù)精度要求挑選合適的代碼類型。代碼為3位數(shù)精度5%數(shù)字代碼=

32、電阻阻值代碼為3位數(shù)精度5%數(shù)字代碼=電阻阻值代碼為3位數(shù)精度5%數(shù)字代碼=電阻阻值代碼為3位數(shù)精度5%數(shù)字代碼=電阻阻值1R1=0.1R22=0.22R33=0,33R47=0.47R68=0.68R82=0.821R0=11R2=1.22R2=2.23R3=3.32R7=4.75R6=5.66R8=6.88R2=8.2100=10120=12150=15180=18220=22270=27330=33390=39470=47560=56680=68820=82101=100121=120151=150181=180221=220271=270331=330391=390471=470561

33、=560681=680821=820102=1K122=1.2K152=1.5K182=1.8K222=2.2K272=2.7K332=3.3K392=3.9K472=4.7K562=5.6K682=6.8K822=8.2K103=10K123=12K153=15K183=18K223=22K273=27K333=33K393=39K473=47K563=56K683=68K823=82K104=100K124=120K154=150K184=180K224=220K274=270K334=330K394=390K474=470K564=560K684=680K824=820K105=1M12

34、5=1.2M155=1.5M185=1.8M225=2.2M275=2.7M335=3.3M395-3.9M475=4.7M565=5.6M685=6.8M825=8.2M106=10M代碼為4位數(shù)精度1%數(shù)字代碼=電阻阻值代碼為4位數(shù)精度1%數(shù)字代碼=電阻阻值代碼為4位數(shù)精度1%數(shù)字代碼=電阻阻值代碼為4位數(shù)精度1%數(shù)字代碼=電阻阻值0000=0000R1=0.10R22=0.220R47=0.470R68=0.680R82=0.821R00=11R20=1.22R20=2.23R30=3.36R80=6.88R20=8.210R0=1011R0=1112R0=1213R0=1315R0=1

35、516R0=1618R0=1820R0=2024R0=2427R0=2730R0=3033R0=3336R0=3639R0=3943R0=4347R0=4751R0=5156R0=5662R0=6268R0=6875R0=7582R0=8291R0=911000=1001100=1101200=1201300=1301500=1501600=1601800=1802000=2002200=2202400=2402700=2703000=3003300=3303600=3603900=3904300=4304700=4705100=5105600=5606200=6206800=6807500=

36、7508200=8209100=9101001=1K1101=1.1K1201=1.2K1301=1.3K1501=1.5K5601=5.6K6201=6.2K6801=6.8K7501=7.5K8201=8.2K9101=9.1K1002=10K1102=11K1202=12K1302=13K1502=15K1602=16K1802=18K2002=20K2202=22K2402=24K3002=30K3303=33K3602=36K3902=39K4302=43K4702=47K5102=51K5602=56K6202=62K6802=68K7502=75K8202=82K9102=91K

37、1003=100K1103=110K1203=120K1303=130K1503=150K1603=160K1803=180K2003=200K2203=220K2403=240K2703=270K3003=300K3303=330K3603=360K3903=390K4303=430K4703=470K5103=510K5603=560K6303=630K6803=680K7503=750K8203=820K9103=910K1004=1M1104=1.1M1204=1.2M1304=1.3M1504=1.5M1604=1.6M1804=1.8M2004=2M2204=2.2M2404=2.

38、4M2704=2.7M3004=3M3304=3.3M3604=3.6M3904=3.9M4304=4.3M4704=4.7M5104=5.1M5604=5.6M6204=6.2M6804=6.8M7504=7.5M8204=8.2M9104=9.1M1005=10M 各規(guī)格的電阻值區(qū)別差異種 類碳 膜金 屬 膜氧化金屬膜繞 線水 泥厚膜芯片薄膜芯片合成電阻適用功率1/8W1/2W1/8W1/2W1/2W5W1/2含以上2W40W1W(含)以下1/2W1/4W(含)以下1/2W(含)以下額定溫度7070707070707070工作溫度-55125-55125-55235-55235-55235

39、-55125-55125-55125阻值范圍12.2M101M0.1510K0.52K0.5150K110M13.3M15.6M阻值誤差±5%±0.1%±0.5%±1%±5%±1%±5%±1%±5%±1%±5%±0.1%±1%±5%±10%TCR±200-1300PPM±10±100PPM±350PPM±300PPM±350PPM±200600PPM±25±

40、100PPM0-15%基體瓷棒瓷棒瓷棒瓷棒瓷棒、玻瓷片瓷片合成體電阻體炭膜金屬膜氧化錫膜鎳鉻合金、炭膜金屬膜炭粉封裝EPOXYEPOXYSiliconSiliconCement&CeramicMeral glass/EPOXYMeral glass/EPOXYPlasstic備注低成本 耐潮 TC高低 適高精密度低 耐高溫 不燃性低 耐高溫 穩(wěn)定度高 不燃性 值范圍小、同散熱佳 不燃性體積小 無(wú)電感 溫度系數(shù)低體積小 無(wú)電感 溫度系數(shù)低無(wú)電感 電容 雜音較大3 電感：47UH 10% (12*6MM)貼片功率電感   特點(diǎn)：   

41、60;  EMI/EMC SMD貼片功率電感。    高質(zhì)量因子。    大電流和大電感量。    為表面焊接而專門設(shè)計(jì),適用于回流焊SMT工藝。   用途：    廣泛用于調(diào)節(jié)器、功率放大器、電源、 消除EMI/RFI噪音之濾波器、節(jié)能燈、玩具及其它電子設(shè)備。   外形圖：       

42、    品名表示法：           特性：規(guī)格ABC SMD35213.5 ± 0.23.1 ± 0.22.1 ± 0.3圖1SMD45324.5 ± 0.24.0 ± 0.23.2 ± 0.3SMD58455.8 ± 0.25.2 ± 0.24.5 ± 0.3SMD78357.8 ± 0.27.0 ± 0.23.5 &#

43、177; 0.3SMD78507.8 ± 0.27.0 ± 0.25.0 ± 0.3SMD104010 ± 0.29.0 ± 0.24.0 ± 0.3SMD105410 ± 0.29.0 ± 0.25.4 ± 0.3CDRH 12412.0 ± 0.312.0 ± 0.35.0 MAX圖2CDRH 12512.0 ± 0.312.0 ± 0.36.2 MAXCDRH 12712.0 ± 0.312.0 ± 0.38.0 MAX 

44、0; 電壓表達(dá)方式：品     名電感量L（H）電感量公差直流電阻DCR（）max額定電流RDC（A）maxSMD4532 1R0M1.0±20 %0.0333.80SMD4532 1R4M1.4±20 %0.0383.30SMD4532 1R8M1.8±20 %0.0422.91SMD4532 2R2M2.2±20 %0.0472.60SMD4532 2R7M2.7±20 %0.0522.43SMD4532 3R3M3.3±20 %0.0582.15SMD4532 3R9M3.9&#

45、177;20 %0.0761.98SMD4532 4R7M4.7±20 %0.0941.70SMD4532 5R6M5.6±20 %0.1011.60SMD4532 6R8M6.8±20 %0.1171.41SMD4532 8R2M8.2±20 %0.1321.26SMD4532 100M10±20 %0.1821.15SMD4532 120M12±20 %0.2101.05SMD4532 150M15±20 %0.2350.92SMD4532 180M18±20 %0.3380.84SMD4532 220M22&

46、#177;20 %0.3780.76SMD4532 270M27±20 %0.5220.71SMD4532 330K33±10 %0.5400.64SMD4532 390K39±10 %0.5870.59SMD4532 470K47±10 %0.8440.54SMD4532 560K56±10 %0.9370.50SMD4532 680K68±10 %1.1170.46 SMD5845 100M10±20 %0.1001.44SMD5845 120M12±20 %0.1201.40SMD5845 150M

47、15±20 %0.1401.30SMD5845 180M18±20 %0.1501.23SMD5845 220M22±20 %0.1801.11SMD5845 270M27±20 %0.2000.97SMD5845 330L33±15 %0.2300.88SMD5845 390L39±15 %0.3200.80SMD5845 470L47±15 %0.3700.72SMD5845 560K56±10 %0.4200.68SMD5845 680K68±10 %0.4600.61SMD5845 820K82&

48、#177;10 %0.6000.58SMD5845 101K100±10 %0.7000.52SMD5845 121K120±10 %0.9300.48SMD5845 151K150±10 %1.1000.40SMD5845 181K180±10 %1.3800.38SMD5845 221K220±10 %1.5700.35 SMD7835 100M10±20 %0.0801.44SMD7835 120M12±20 %0.0901.39SMD7835 150M15±20 %0.1001.24SMD7835

49、 180M18±20 %0.1101.12SMD7835 220M22±20 %0.1301.07SMD7835 270M27±20 %0.1500.94SMD7835 330M33±20 %0.1700.85SMD7835 390M39±20 %0.2200.74SMD7835 470M47±20 %0.2500.68SMD7835 560K56±10 %0.2800.64SMD7835 680K68±10 %0.3300.59SMD7835 820K82±10 %0.4100.54SMD7835 101K100±10 %0.4800.51SMD7835 121K120±10 %0.5400.49SMD7835