高频发射三极管.doc

常用高频发射三极管型号及参数常用三极管参数 常用高频发射三极管型号及参数常用三极管参数常用高频发射三极管型号及参数-常用高频发射三极管型号及参数型号功率增益电压频率工作形态封装123脚2NW5dB28V400MHzFM/AM/SSBTO-602N,5W10dB28V175MHzFM/AMTO-39CBE2NW7dB28V175MHzFMTO-602NW10dB28V400MHzWINTransceiverTO-39CBE2NW6dB13,6V175MHzWINTransceiverTO-392NW10dB12V175MHzWINTransceiverTO-392NW5dB24V1200MHzWINTransceiverTO-392N,5W11dB15V200MHzWINTransceiverTO-392NW9dB13,5V175MHzWINTransceiverTO-392NW7dB12,5V175MHzWINTransceiverTO-392NW8dB15V400MHzFMTO-392SC7300,8W10dB13,5V175MHzFMTO-39CBE2SCW60MHzFMTO-2202SCW100MHzFM/AM/SSBTO-2202SCW30MHzFM/AM/SSBTO-220BCE3表盘线路板上有断路：更换或修复仪表线路板2SCW12dB12V30MHzFM/AM/SSBTO-220BCE2SCW10dB12,5V136-174MHzFMTO-220BEC2SCW7,5dB12,5V136-174MHzFMTO-220BEC2SCW30MHzWINTransceiverTO-220BCE2SCW80MHzWINTransceiverTO-202EBC2SCW10dB13,5V175MHzFMT-31E2SCW14,5dB13,5V50MHzFM/AM/SSBTO-220BCE2SCW11,1dB12V30MHzWINTransceiverTO-220BCE2SCW14,5dB12V30MHzFM/AM/SSBTO-220BEC2SCW6,7dB13,5V175MHzFMT-31E2SC1946A30W10dB13,5V175MHzFMT-31E2SCW10dB13,5V175MHzFMTO-39CBE2SC,8W17dB12V30MHzWINTransceiverTO-126ECB2SCW7,8dB13,5V470MHzFMT-31E2SCW6,7dB13,5V470MHzFMT-31E2SCW3,7dB13,5V470MHzFMT-31E2SC1968A14W5,4dB13,5V470MHzFMT-31E2SCW12dB12V30MHzFM/AM/SSBTO-220BCE2SC,5W10dB13,5V175MHzWINTransceiverTO-220BEC2SCW10dB13,5V175MHzWINTransceiverTO-220BEC2SCW10dB13,5V175MHzWINTransceiverTO-220BEC常用三极管型号参数资料常用三极管参数2SCW50MHzWINTransceiverTO-92LBCE2SCW10dB13,5V30MHzWINTransceiverTO-220BCE2SCW10dB13,5V30MHzWINTransceiverTO-220BCE2SC,8W30MHzWINTransceiverTO-126ECB常用三极管参数（转帖）.型号功率增益电压频率工作形态封装123脚2SCW30MHzWINTransceiverTO-220BCE2SC2036A1,4WWINTransceiverTO-202BCE2SCW12dB13,5V30MHzFM/AM/SSBTO-220BCE2SC,2W15,7dB12V175MHzFM/AMTO-92LBCE2SC,25W15,3dB12V175MHzFM/AMTO-92LBCE2SC,5W9dB12常用三极管V175MHzFMTO-39CBE2SCW13,5V27MHzWINTransceiverTO-220BCE2SCW13dB12V100MHzFM/AMTO-220BCE2SC,45W13dB12V175MHzFM/AMTO-92LBCE2SCW13dB12V100MHzFM/AM/SSBTO-220BCE2SCW8,8dB13,5V175MHzFM/AM/SSBT-31E2SCW13,8dB12V30MHzFM/AM/SSBTO-220BCE2SCWWINTransceiverTO-220BCE2SCW13,8dB13,5V175MHzFMT-31E2SC,5W27MHzFM/AM/SSBTO-220BCE2SC,8W17dB12V180MHzFM/AMTO-126ECB常用npn三极管2SCW14dB30MHzWINTransceiverTO-220BCE2SCWWINTransceiverTO-2202SC,6W10dB12V175MHzFM/AMTO-92LBCE2SCW14,5dB13,5V175MHzFMT-31E2SCW30MHzWINTransceiverTO-2202SCW1,9dB13,5V520MHzFMT-31E2SCW13dB7,2V175MHzFMT-31E2SCW11dB13,5V175MHzFMTO-39CBE2SCW13dB7,2V175MHzFMT-31E2SCW10dB12,5V520MHzFMT-31E2SCW7,7dB12,5V520MHzFMT-31E2SCW4,8dB12,5V520MHzFMT-31E2SC,8W6,7dB7,2V520MHzFMT-31E2SCW4,8dB7,2V520MHzFMT-31E2SCW14dB12V1,5-30MHzFM/AM/SSBTO-220BEC2SCW100MHzWINTransceiverTO-2202SCWWINTransceiverTO-2202SCW100MHzWINTransceiver2SCW260MHzWINTransceiverTO-1262SCW400MHzWINTransceiverTO-1262SC4693FM/AMTO-92LBCE常用三极管_常用npn三极管 常用npn三极管_常用KTCW100MHzFM/AMTO-92LECBKTCW12dB12V100MHzFM/AMTO-220BCEKTCW11dB12V100MHzFM/AMTO-220BCEMRF1615W13,5dB12,5V225-500MHzFM/AMTO-220BECMRFW13,5dB12,5V225-500MHzFM/AMTO-220BECMRFW12dB12,5V225-500MHzFM/AMTO-220BEC听说/252.html型号功率增益电压频率用途封装管脚123MRF1345W14dB28V30-225MHzFM/AM/SSBMRFW16dB28V30-225MHzFM/AM/SSBMRF148A30W18dB50V2-225MHzFM/AM/SSBMRF171A45W19,5dB28V30-225MHzFM/AM/SSBMRFW13dB28V30-225MHzFM/AM/SSBMRFW11,8dB28V30-225MHzFM/AM/SSBMSWdB13,5V30MHzFM/AM/SSBTO-220GDS型号功率增益电压频率工作形态封装123脚MRF2374W12dB18V175MHzWINTransceiverTO-39MRF2605W10dB12,5V136-174MHzFMTO-220BECMRFW5,2dB12,5V136-174MHzFMTO-220BECMRFW7,5dB12,5V136-174MHzFMTO-220BECMRFW5,2dB12,5V136-174MHzWINTransceiverTO-220BECMRF3408W13dB28V70MHzWINTransceiverTO-220BEC常用贴片三极管 2052常用npn三极管 常用三极MRFW11dB28V70MHzWINTransceiverTO-220BECMRFW6dB28V70MHzWINTransceiverTO-220MRFW12dB12,5V1,5-30MHzFM/AM/SSBMRFW13dB12,5V1,5-30MHzFM/AM/SSBMRFW10dB13,5V1,5-30MHzFM/AM/SSBTO-220BCEMRF4763W15dB13,5V1,5-30MHzFM/AM/SSBTO-220BCEMRFW15dB13,5V1,5-30MHzFM/AM/SSBTO-220BECMRFW10dB13,5V1,5-30MHzFM/AM/SSBTO-220MRFW10dB28V1,5-30MHzWINTransceiverTO-220MRFW15dB28V1,5-30MHzWINTransceiverTO-220MRFW15dB13,5V1,5-30MHzWINTransceiverTO-220MRFW10dB13,5V27-50MHzWINTransceiverTO-220BECMRF5170,75W10dB20V1000MHzWINTransceiverTO-39M学会常用贴片三极管RF6071,75W11,5dB16V175MHzWINTransceiverTO-39MRF6607W5,4dB12,5V400-512MHzWINTransceiverTO-220MSW18dB28V30MHzFM/AM/SSBMSW15dB12,5V30MHzFM/AM/SSB常用高频发射三极管型号及参数常用三极管参数,晶体管：最常用的有三极管和二极管两种。三极管以符号BG（旧）或（T）表示，二极管以D表示。按制作材料分，晶体管可分为锗管和硅管两种。按极性分，三极管有PNP和NPN两种，而二极管有P型和N型之分。多数国产管用xxx表示，其中每一位都有特定含义：如3AX31，第一位3代表三极管，2代表二极管。第二位代表材料和极性。A代表PNP型锗材料；B代表NPN型锗材料；C为PNP型硅材料；D为NPN型硅材料。第三位表示用途，其中X代表低频小功率管；D代表低频大功率管；G代表高频小功率管；A代表高频大功率管。最后面的数字是产品的序号，序号不同，各种指标略有差异。注意，二极管同三极管第二位意义基本相同，而第三位则含义不同。对于二极管来说，第三位的P代表检波管；W代表稳压管；Z代表整流管。上面举的例子，具体来说就是PNP型锗材料低频小功率管。对于进口的三极管来说，就各有不同，要在实际使用过程中注意积累资料。常用的进口管有韩国的90xx、80xx系列，欧洲的2Sx系列，在该系列中，第三位含义同国产管的第三位基本相同。,参考资料：/wuxie/dzjc/sjg.asp,三极管NPN型9011、9013、9014、9016、9018及PNP型9012、9015的主要作用及其介绍？,本人现在急于知道答案，谢谢大家帮助。,满意答案：,9011NPN30V30mA400mW150MHz放大倍数20-80,9012PNP50V500mA600mW低频管放大倍数30-90,9013NPN20V625mA500mW低频管放大倍数40-110,9014NPN45V100mA450mW150MHz放大倍数20-90,8050NPN25V700mA200mW150MHz放大倍数30-100,8550PNP40V1500mA1000mW200MHz放大倍数40-140,结构：NPN,集电极-发射极电压30V,集电极-基电压50V,射极-基极电压5V,集电极电流0.03A,耗散功率0.4W,结温150,特怔频率平均370MHZ,放大倍数：D28-45E39-60F54-80G72-108H97-146I132-198,9012结构：PNP,集电极-发射极电压-30V,集电极-基电压-40V,射极-基极电压-5V,集电极电流0.5A,耗散功率0.625W,结温150,特怔频率最小150MHZ,放大倍数：D64-91E78-112F96-135G122-166H144-220I190-300,9013结构：NPN,集电极-发射极电压25V,集电极-基电压45V,射极-基极电压5V,集电极电流0.5A,耗散功率0.625W,结温150,特怔频率最小150MHZ,放大倍数：D64-91E78-112F96-135G122-166H144-220I190-300,9014结构：NPN,集电极-发射极电压45V,集电极-基电压50V,射极-基极电压5V,集电极电流0.1A,耗散功率0.4W,结温150,特怔频率最小150MHZ,放大倍数：A60-150B100-300C200-600D400-1000,9015结构：PNP,集电极-发射极电压-45V,集电极-基电压-50V,射极-基极电压-5V,集电极电流0.1A,耗散功率0.45W,结温150,特怔频率平均300MHZ,放大倍数：A60-150B100-300C200-600D400-1000,9016结构：NPN,集电极-发射极电压20V,集电极-基电压30V,射极-基极电压5V,集电极电流0.025A,耗散功率0.4W,结温150,特怔频率平均620MHZ,放大倍数：D28-45E39-60F54-80G72-108H97-146I132-198,9018结构：NPN,集电极-发射极电压15V,集电极-基电压30V,射极-基极电压5V,集电极电流0.05A,耗散功率0.4W,结温150,特怔频率平均620MHZ,放大倍数：D28-45E39-60F54-80G72-108H97-146I132-198,三极管8550,8550是一种常用的普通三极管。,它是一种低电压,大电流,小信号的PNP型硅三极管,集电极-基极电压Vcbo：-40V,工作温度：-55to+150,和8050（NPN）相对,主要用途：开关应用，射频放大,三极管8050,8050是常用的NPN小功率三级管，下面是的8050引脚图参数资料。,8050三级管参数:类型:开关型;极性:NPN;材料:硅;最大集存器电流(A):0.5A;直流电增益:10to60;功耗:625mW;最大集存器发射电（VCEO）:25;频率:150KHz,PE8050NPN30V1.5A1.1W,3DG8050硅NPN25V1.5AFT=190*K,2SC8050硅NPN25V1.5AFT=190*K,MC8050硅NPN25V700mA200mW150MHz,CS8050硅NPN25V1.5AFT=190*K,追问：90系列的三极管相比较其它三极管的优点？,补充：?电子制作中常用的三极管有90系列，包括低频小功率硅管9013（NPN）、9012（PNP），低噪声管9014（NPN），高频小功率管9018（NPN）等。它们的型号一般都标在塑壳上，而样子都一样，都是TO-92标准封装。在老式的电子产品中还能见到3DG6（低频小功率硅管）、3AX31（低频小功率锗管）等，它们的型号也都印在金属的外壳上。我国生产的晶体管有一套命名规则，电子爱好者最好还是了解一下：,?第一部分的3表示为三极管。第二部分表示器件的材料和结构，A：PNP型锗材料B：NPN型锗材料C：PNP型硅材料D：NPN型硅材料第三部分表示功能，U：光电管K：开关管X：低频小功率管G：高频小功率管D：低频大功率管A：高频大功率管。另外，3DJ型为场效应管，BT打头的表示半导体特殊元件。,?三极管最基本的作用是放大作用，它可以把微弱的电信号变成一定强度的信号，当然这种转换仍然遵循能量守恒，它只是把电源的能量转换成信号的能量罢了。三极管有一个重要参数就是电流放大系数。当三极管的基极上加一个微小的电流时，在集电极上可以得到一个是注入电流倍的电流，即集电极电流。集电极电流随基极电流的变化而变化，并且基极电流很小的变化可以引起集电极电流很大的变化，这就是三极管的放大作用。,?三极管还可以作电子开关，配合其它元件还可以构成振荡器。,相关问题:,PNP型三极管与NPN型三极管有什么不同?,三极管的判定以及它属于NPN还是属于PNP型？,怎样判断PNP型三极管与NPN型三极管,NPN三极管跟PNP三极管的外型有什么不同？,怎么测出三极管是NPN或PNP？,转载来自于：三极管NPN型9011、9013、9014、9016、9018及PNP型9012、9015的主要作用及其介绍？搜搜问问,贴片三极管-普通型,TYPE.NO.,NPNNP,MAXIMOMRATINGS,ELECTRCALCHARACTERISTICS,NOTE,ICBO(MA),VCD(V),VCES(V),IC(MA),IB(MA),HFE,VCE(V),IC(MA),Ft(MA),BVCBO,BVCEO,ICM(MA),ICBO(MA),2SC1009,NPN,50,30,30,200,0.1,30,80,10,1,60-180,6,1,250,NF20db,2SC1621,NPN,25,20,200,200,0.1,30,130,10,1,40-180,0.5,1,500,Tuu20ns,2SC1622,NPN,120,120,50,200,0.1,30,70,10,1,135-900,6,1,110,2SC1623,NPN,60,50,100,200,0.1,60,300,100,10,90-600,6,1,250,2SC2411,NPN,40,32,500,200,1,20,400,100,10,82-390,6,0.9,250,2SC2412,NPN,50,40,100,200,0.5,30,400,50,5,120-560,6,1,180,2SC2712,NPN,60,50,150,150,0.1,60,250,400,10,70-70,6,2,80,2SC2713,NPN,20,120,100,150,0.1,120,300,10,1,200-700,6,2,100,2SCC2714,NPN,40,30,20,100,0.5,40,40-200,6,1,550,2SC2755,NPN,30,30,20,50,0.1,20,60-240,10,3,400,2SC2812,NPN,55,50,150,200,0.1,35,800,50,5,90-600,6,1,100,2SC2814,NPN,30,20,30,150,0.1,10,40-270,6,1,320,2SC2859,NPN,35,30,500,150,0.1,35,250,100,10,70-240,1,100,300,2SC2759,NPN,30,14,50,150,0.1,15,40-180,1,5,1500,2SC3326,NPN,50,20,300,150,0.1,50,300,30,3,200-1200,2,4,30,2SC3757,NPN,40,100,200,0.1,40,250,10,1,60-320,1,10,450,2SC3125,NPN,30,25,50,150,0.1,30,200,15,1.5,20-200,10,10,550,2SC3120,NPN,30,15,50,150,0.1,30,40-200,10,5,1500,2SC3130,NPN,15,10,50,150,1,10,500,20,4,75-400,4,5,1400,NF8dB,2SC4246,NPN,30,15,50,100,0.1,15,60-320,3,8,1100,2SC3906,NPN,120,120,50,200,0.5,100,500,10,1,180-820,6,2,140,2SC3324,NPN,120,120,100,150,1,120,300,6,1,200-700,6,2,100,2SC3356,NPN,20,12,100,200,0.1,10,50-300,10,20,7000,2SC3734,NPN,60,40,200,200,0.1,30,300,50,5,75-300,1,10,300,2SD596,NPN,30,25,700,200,0.1,30,600,700,70,110-400,1,100,170,2SD780,NPN,60,60,200,200,0.1,60,50,300,30,110-400,1,50,140,2SD1048,NPN,20,15,700,200,1,15,25,5,0.5,200-900,2,50,250,2SD1383,NPN,40,32,200,200,0.5,24,1500,200,0.4,1000,5,100,250,2SD1757,NPN,30,15,500,200,0.5,20,400,500,50,120-560,3,100,150,2SD1781,NPN,40,32,800,200,0.03,20,400,500,50,82-390,3,100,150,MMBT2222,NPN,72,40,600,250,0.01,75,300,150,15,100-300,10,150,200,Trr,BF820,NPN,300,300,50,200,0.01,200,600,100,5,50-,30,5,60,MMBT918,NPN,30,15,50,200,400,10,1,20-,1,3,600,EMMT491,NPN,80,60,1000,500,0.01,40,300,500,50,100-900,5,500,150,PDA06,NPN,80,80,500,300,0.01,60,BFR92,NPN,15,30,300,0.01,10v,500,10,1,50-,10,14,5000,NF1.8dB,BC846,NPN,80,65,100,200,0.015,80,600,100,5,110-450,5,2,300,BC847,NPN,50,40,100,200,0.015,50,600,100,5,110-800,5,2,300,BC817,NPN,50,45,500,200,0.1,45,700,500,50,100-600,1,100,200,BC818,NPN,30,25,500,200,0.1,25,700,500,50,100-600,1,100,200,MMBTA42,NPN,300,300,500,350,0.1,260,200,20,2,74-,10,10,50,MMBT551,NPN,160,150,600,350,0.03,120,200,10,1,80-300,5,10,2SA811,PNP,-120,-120,-50,200,-0.05,-120,-300,-10,-1,74-,-6,-1,50,2SA812,PNP,-60,50,-100,200,-0.1,-60,-300,-100,-10,80-300,-6,-1,50,2SA1036,PNP,-40,-32,-500,200,-1,-20,-400,-100,-10,135-900,-3,-10,200,2SA1037,PNP,-50,-40,-100,200,0.5,-30,-500,-50,-5,90-6000,-6,-1,140,2SA1162,PNP,-50,-50,-150,150,-0.1,-50,-300,-100,-10,82-390,-6,-2,80,2SA1179,PNP,-55,-50,-150,200,-0.1,-35,-500,-50,-5,120-560,-6,-1,180,2SA1338,PNP,-60,-50,-500,150,-0.1,-40,-400,-100,-10,70-400,-5,-10,200,2SA1464,PNP,-60,-40,-500,200,-0.1,-400,-750,-500,-50,90-600,2,150,150,MMBT3906,PNP,40,40,200,200,250,10,-10,75-300,1,10,250,MMBT2907,PNP,60,40,600,200,0.05,60,400,150,-50,75-300,10,150,200,MMBT4403,PNP,40,40,600,350,400,150,1,100-300,10,150,200,MMBT5401,PNP,160,150,600,350,0.03,120,200,10,15,100-300,5,10,MMBTA92,PNP,300,300,500,350,0.1,260,200,20,15,100-300,10,150,200,9011ST,NPN,50,30,50,150,0.1,30,500,100,1,80-300,1,1,9012ST,PNP,40,30,200,200,0.1,25,500,100,2,74-,2,50,50,9013ST,NPN,40,30,200,200,0.1,25,500,100,10,40-400,10,50,100,9014ST,NPN,40,30,100,200,0.1,40,500,10,10,40-400,1,2,80,9015ST,PNP,50,30,100,200,0.1,40,500,10,10,40-400,1,2,80,9018ST,NPN,50,30,20,200,0.1,18,500,10,1,40-400,10,1,80,8050ST,NPN,30,18,700,350,0.6,20,500,500,1,40-400,10,100,80,8550ST,PNP,18,20,700,350,0.6,20,500,500,1,40-400,10,100,80,1008ST,NPN,60,20,500,300,0.1,35,500,100,50,100-400,1,50,100,1959ST,NPN,35,30,500,250,0.1,25,500,500,50,200-800,1,500,200,2SD1328,NPN,25,20,500,200,0.1,25,500,500,50,200-800,1,-500,200,FMM591,NPN,80,60,1000,500,0.1,60,300,-500,20,100-300,2,-500,150,2SC3098,NPN,30,20,50,150,0.101,10,20,30-300,10,1,3.5G,NF=3Db(1G),FMSIA,PNP,*2,-40,-100,120,-6,-1,SOT-25,FMWI,NPN,*2,40,100,120,6,1,SOT-25,2SC2873,NPN,50,50,2000,500,0.1,50,0.5,1000,50,70-240,2,500,120,SOT-89,2SC2932,NPN,55,32,750,250,30,0.4,20-200,10,400,100,SOT-89,2SC2884,NPN,35,30,800,500,0.1,35,0.5,500,20,100-320,1,100,120,SOT-89,2SD1620,NPN,30,10,3000,500,0.1,20,0.4,3000,60,140-,2,3000,200,SOT-89,2SD1007,NPN,120,120,700,500,0.1,120,0.6,500,50,90-400,1,100,90,SOT-89,2SA1201,PNP,-120,-120,800,500,-0.1,-120,-1,-500,-50,80-240,-5,-100,120,SOT-89,2SA1213,PNP,-50,-50,2000,500,-0.1,-50,-0.5,-1000,-50,70-240,-2,-500,120,SOT-89,2SB1073,PNP,-30,-20,-400,500,-0.1,-30,-1,-3000,-100,90-315,-1,-2000,120,SOT-89,2SB805,PNP,-100,-100,-700,500,-0.1,-100,-0.5,-500,-50,90-400,-1,-50,75,SOT-89,2SB806,PNP,-120,-120,-700,500,-0.1,-120,-0.6,-500,-50,90-400,-1,-100,75,SOT-89,2SB799,PNP,-60,-50,-700,500,-0.1,-60,-0.4,-500,-50,90-400,-3,-100,120,SOT-89,2S1132,PNP,-40,-32,-1000,500,-0.5,-20,-0.5,-500,-50,82-390,-2,-100,100,SOT-89,2SB1308,PNP,-30,-20,-3000,500,-0.5,-20,-0.5,-2000,-200,82-390,-2,-500,100,SOT-89,2SB1115,PNP,-60,-50,-1000,500,-0.1,-60,-0.3,-1000,-50,135-600,2,100,80,SOT-89,2SB1119,PNP,40,25,3000,500,0.1,10,0.5,500,-200,180-600,2,100,150,SOT-89,2SD1621,PNP,30,25,-2000,500,0.1,20,0.5,1000,-50,100-560,1,-500,200,SOT-89,2SB1204,PNP,-35,-30,800,500,0.1,35,0.7,-500,500,100-320,-5,150,120,SOT-89,2SB1189,PNP,-80,-80,-700,500,-0.1,-50,-0.4,-500,100,82-390,-2,150,100,SOT-89,BCX51,PNP,-45,-45,-150,500,-0.1,-30,-0.5,500,20,40-250,1,500,150,SOT-89,BCX55,NPN,60,60,2000,500,0.1,30,0.5,200,-50,40-250,1,500,150,SOT-89,2500ST,NPN,30,10,2,500,0.1,30,0.5,1000,-50,140-600,5,100,150,SOT-89,BC868,NPN,25,20,1000,500,0.1,25,0.5,500,50,85-375,10,10,60,SOT-89,2SC2983,NPN,160,160,1500,22,1,160,1.5,1000,50,70-240,1,100,100,X-212,2SC2802,NPN,300,300,200,10,0.1,200,1.5,50,5,40-250,10,10,50,X-212,2SC3518,NPN,60,60,5000,10,0.1,60,0.3,2000,200,100-400,1,2000,50,X-212,2SB9622,PNP,-40,-3,10,10,-10,-30,1.5,2000,200,60-400,2,1000,80,X-212,贴片三极管-场效应,TYPE.NO.,STRUCTURE,MAXIMOMRATINGS,ELECTRCALCHARACTERISTICS,NOTE,VGDO,(V),VGSO,(V),ID,(MA),PD,(MW),IDSS,(MA),VDS(V),VDS(V),VGS,(off),(v),TYP,|Yf|,(MS),TYP,Ciss,(PF),TYP,Ciss,(PF),TYP,2SK160,N,-30,-30,20,150,0.5-12,5,0,-1.1,4.1,4.1,0.9,SOT-23,2SK209,N,-50,10,100,0.3-6.5,10,0,-0.4,1.2,8.2,2.6,SOT-23,2SK302,MOS-N,-20,-20,30,150,1.5-14,10,0,-2.5,10,3.2,0.05,SOT-23,2SK303,N,-30,150,0.6-12,10,0,-4,6,5,SOT-23,2SK425,N,-50,-50,30,150,1.0-18,10,0,-1.2,9,13,3.2,SOT-23,2S426,N,-50,-50,30,150,1.0-18,10,0,-1.2,9,13,3.2,SOT-23,2SK433,N,-50,150,0.3-12,10,-0.6,3,8,SOT-23,2SK2099,MOS-N,250,250,2000,10W,X-212,NT3055,MOS-N,60,60,8000,10W,X-212,BSS123,MOS-N,100,100,170,360,SOT-23,BSS138,MOS-N,50,50,200,360,SOT-23,BSS85,MOS-N,60,60,200,330,SOT-23,2N7002,MOS-N,60,60,115,330,-4,SOT-23,BJT176,J,-30,35,330,SOT-23,晶体三极管的结构和类型,晶体三极管，是半导体基本元器件之一，具有电流放大作用，是电子电路的核心元件。三极管是在一块半导体基片上制作两个相距很近的PN结，两个PN结把正块半导体分成三部分，中间部分是基区，两侧部分是发射区和集电区，排列方式有PNP和NPN两种，,从三个区引出相应的电极，分别为基极b发射极e和集电极c。,发射区和基区之间的PN结叫发射结，集电区和基区之间的PN结叫集电极。基区很薄，而发射区较厚，杂质浓度大，PNP型三极管发射区发射的是空穴，其移动方向与电流方向一致，故发射极箭头向里；NPN型三极管发射区发射的是自由电子，其移动方向与电流方向相反，故发射极箭头向外。发射极箭头向外。发射极箭头指向也是PN结在正向电压下的导通方向。硅晶体三极管和锗晶体三极管都有PNP型和NPN型两种类型。,三极管的封装形式和管脚识别,常用三极管的封装形式有金属封装和塑料封装两大类，引脚的排列方式具有一定的规律，,底视图位置放置，使三个引脚构成等腰三角形的顶点上，从左向右依次为ebc；对于中小功率塑料三极管按图使其平面朝向自己，三个引脚朝下放置，则从左到右依次为ebc。,目前，国内各种类型的晶体三极管有许多种，管脚的排列不尽相同，在使用中不确定管脚排列的三极管，必须进行测量确定各管脚正确的位置，或查找晶体管使用手册，明确三极管的特性及相应的技术参数和资料。,晶体三极管的电流放大作用,晶体三极管具有电流放大作用，其实质是三极管能以基极电流微小的变化量来控制集电极电流较大的变化量。这是三极管最基本的和最重要的特性。我们将Ic/Ib的比值称为晶体三极管的电流放大倍数，用符号“”表示。电流放大倍数对于某一只三极管来说是一个定值，但随着三极管工作时基极电流的变化也会有一定的改变。,晶体三极管的三种工作状态,截止状态：当加在三极管发射结的电压小于PN结的导通电压，基极电流为零，集电极电流和发射极电流都为零，三极管这时失去了电流放大作用，集电极和发射极之间相当于开关的断开状态，我们称三极管处于截止状态。,放大状态：当加在三极管发射结的电压大于PN结的导通电压，并处于某一恰当的值时，三极管的发射结正向偏置，集电结反向偏置，这时基极电流对集电极电流起着控制作用，使三极管具有电流放大作用，其电流放大倍数Ic/Ib，这时三极管处放大状态。,饱和导通状态：当加在三极管发射结的电压大于PN结的导通电压，并当基极电流增大到一定程度时，集电极电流不再随着基极电流的增大而增大，而是处于某一定值附近不怎么变化，这时三极管失去电流放大作用，集电极与发射极之间的电压很小，集电极和发射极之间相当于开关的导通状态。三极管的这种状态我们称之为饱和导通状态。,根据三极管工作时各个电极的电位高低，就能判别三极管的工作状态，因此，电子维修人员在维修过程中，经常要拿多用电表测量三极管各脚的电压，从而判别三极管的工作情况和工作状态。,使用多用电表检测三极管,三极管基极的判别：根据三极管的结构示意图，我们知道三极管的基极是三极管中两个PN结的公共极，因此，在判别三极管的基极时，只要找出两个PN结的公共极，即为三极管的基极。具体方法是将多用电表调至电阻挡的R×1k挡，先用红表笔放在三极管的一只脚上，用黑表笔去碰三极管的另两只脚，如果两次全通，则红表笔所放的脚就是三极管的基极。如果一次没找到，则红表笔换到三极管的另一个脚，再测两次；如还没找到，则红表笔再换一下，再测两次。如果还没找到，则改用黑表笔放在三极管的一个脚上，用红表笔去测两次看是否全通，若一次没成功再换。这样最多没量12次，总可以找到基极。,三极管类型的判别：三极管只有两种类型，即PNP型和NPN型。判别时只要知道基极是P型材料还N型材料即可。当用多用电表R×1k挡时，黑表笔代表电源正极，如果黑表笔接基极时导通，则说明三极管的基极为P型材料，三极管即为NPN型。如果红表笔接基极导通，则说明三极管基极为N型材料，三极管即为PNP型。,贴片三极管应用中有几个主要问题：,其一是过去习惯使用通孔装配式三极管，如何找对应的片状三极管；,其二是从参数电路上找到的三极管型号市场上却无法购得、如何代换。这也往往是设计、开发人员及维修人员在应用中较大的难题。,造成这两个难题的原因是同一种管芯做成不同封装的器件时，其型号不同。,例如：,东芝公司生产的一种以TO-92封装的小功率三极管。其型号为2SC1815，然而用同一管芯采用SOT-23封装时。其型号变成2SC2712；而采用SO-70封装时。型号又变成2SC4732。根据这一现实，在选用或代换时、应根据三极管的基本参数要求，在晶体管手册上寻找出参数基本相同。并且封装符合要求的三极管。,这里以常用TO一92封装的9012、9013为例来说明：,先找出9012、9013主要参数：,9012为PNP管、Vceo为30V、Ic为500mA、Pcm为625mW；,9013是NPN管、Vceo为30V、Ic为500mA、Pcm为625mW。,在晶体管手册上可找SOT-23封装的三极管。其参数差不多的型号如表所示。在表中，Pcm这-项明显小于9012或9013.这是片状SOT-23的散热面积小所致、如果实际使用时Pcm要求不大。则可通过实验，看是否满足电路要求，若通过各种试验（如高、低温试验）能满足要求方可大量使用！,类型型号Vceo（V）Ic（mA）Pcm（mW）,NPN2SC285930500150,NPN2SD59625700200,PNP2SB62425700200,PNP8C80745500310,在代换时，必须了解清楚原管子（或要求的管子）的性能（是通用三极管、是开关三极管等）、结构（如达林顿管、带阻三极管、组合三极管）或有特殊要求（如高反压、低噪声等）及-些主要参数然后从手册（或公司数据手册）找同一性能、功能、结构及参数相似的进行试验或代换，另外，要注意的是工作频率（是MF段、HF段、VHF段或UHF段等）。选用的f要满足工作频率的要求。,这