电子装联工艺教程-单元5表面组装装技术基础

-1-551SMTSurfaceMountedTechnology70511PCB2.12.1SMT-2-SMT→→→→→→PCBSMTPCBPCBSMTPCBSMTPCBSMTPCBSMTPCBPCBICTAOIX-RAYPCBSMCSMD(SMA)SMAISMASMAIIISMASMAIIIIIISMT1)ISMA-3-ISMTSMAAÎÎÎÎÎÎÎPCBPLCCSMDÎPCBAÎÎÎAÎÎÎPCBBÎÎÎBÎÎÎ2)SMASMAPCBSMAP/NSMAABSMASMASMD,sideBSMCsideATHCÎPCBBÎÎÎÎPCBAÎÎÎÎ-4-THCTHCSMCSMCSMDsideATHCsideBSMCÎPCBAÎÎPCBBÎÎÎÎÎÎÎSMA3)SMASMAABBSMDSMCSMD-5-ÎPCBAÎÎÎÎÎÎPCBBÎÎÎÎÎÎÎABÎPCBBÎÎÎÎPCBAÎÎAÎAÎBÎÎÎSMAPCBSMTSMT11/10-6-SMT40%~60%60%~80%100mil(254mm)SMT50mil~25mil127mm~0.63mm20mil0.5mmDIPPLCCDIP21SMT(MTBF)2590SMT3SMCSMD3GHz500MHzSMT16MHzMCM100MHz-7-23430%~50%1)112CSP2)3)4)5)(SMCSMD)1SMT6075100mil(254mm)SMT50mil~25mil127mm~0.63mm20mil0.5mmDIPPLCC-8-DIP21SMT(MTBF)2590SMT3SMCSMD3GHz500MHzSMT16MHzMCM100MHz234112CSP(SMCSMD)5PCB40QFP-9-SMT(CTE)SMT52PCBSMTPCBSMB(surfacemountprintedcircuitboard)SMBPTHPCBPTHPCBSMBPCBPCB521SMBSMBSMB.PCB-10-PCB()(1)(2)()SMBSMBCTE53531201234-11-()Sn63Pb37Sn62Pb36Ag2RRMARA(h)(S-1)(PaS)5-152531PCB7590-12-200+325102()36PCB532PCBSMCSMCPCB-13-SMT1252(0~C)3(SMT80150)23SMT1235150~C456533PCB-14-PCBPCB111CFC()(Fren)123451SMDPCB234561974CFCCFCCFC80CFC8090CFC1HCFC2(1)(2)(3)354-15-1(1)PCB30Ncmab2a2b()(2)PCB(200)(300)(300)PCB36-16-1(3)-16-(4)2PCBPCBPCBPCB(1)()(PMP-200)(SP-300)(SP5060A)PCB(2)PCBPCBPCBVPCB453SMT1-17-2530(1)/(2)()(3)30223Ncm22SMT(1)505050+50015mm(0.15mm+0.075mm)=0225rnm1.31.50.4mmICSMT(2)()0.05mm00lmm0.013mm97PPm9PPM(3)(4)-18-3(1)1.27mm0.2mm0.25mm0.1mm0.2mm0.64mm0.2mm0.15mm05mm127mm05mm0.15mm0.2mm(2)PCBPCBPCBPCBPCB(3)201.5124(1)/(2)(3)(4)PCBPCB/(5)-19-54SMCSMD(SMA)SMTSMASMA()21BSMCATHCTHCTHCSMCSMCATHCBSMCSMCSMCSMCSMDTHCSMIC()THCPCBASMCSOTBSMCSMDQFP()2-4SMT(1)13-20-(2)14IIISMTIIIP/NIntel-21-(3)15PCB-22-564112345SMT4112305mm43mm5-23-12SOT34??1(1)(2)(a)(b)(c)0.64mm(3)50mil2-24-1(1)0.46mm(2)()(3)0.86mm0.46mm0.05mm0.36mm0.86mm025mm20.3mm1.27mm0.635mm0.3mm12.54mmlmm1.65mm2.54mmSMD0.25mm0.2mm0.25mm127mmSMD0.127mm2.54mm0.127mmA127mm02mm025mm254mm012SMDSMTA42PCBPCB()PCBPCBPCB-25-SMTPCBSMCSMDSMT1SMT2()3SMCSMD12MELF3SOTSOT038mm-26-4PLCCPLCC20PLCC038mm5LCCCLCCC089mm6SOICSOIC7QFPQFPSOIC05mm064mm0.3mm12KK35-52070PCBPCB3-4-1PCBPTHSMTSOTSOIC-27-3-16—3-171.PCB2.PCB3.PCBPCB4.PCB-28-PCB),,3-185.2090500~5256.7.PCB1.230~2402.3.1/2~2/3PCB4.0.3~1.2m/s5.5~86.3-29-3-19