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SMD元件焊盘尺寸设计参考540编1SMD元件焊盘尺寸设计参考序号元件类型PAD尺寸对应钢板开孔尺寸说明10201chipX：→13.5milY：→9.5mil开孔尺寸不变20402chipX：24→20milY：22→20mil内距不变30603chipX、Y、内距都不变半圆槽直径→17mil40805chipX：56→50milY：40→45mil半圆槽直径→17mil51206chipX：65→60milY：50→55mil半圆槽直径→20mil內距:79milSMD元件焊盘尺寸设计参考540编26大于1206电阻X：減8milY：不变內距：C+8mil挖孔=1/3A深度：20mil7大于1206电容代号C系列X：A-16milY：B+8mil內距：C+16mil挖孔=1/3A深度=1/3B+2mil8Alumin铝质电容削成六角形9（大型）高压电容内距=110milX：不变Y：60→88mil內距:110→118mil半圆槽直径30mil深度31mil10（大型）高压电容内距=130milX：不变Y：50→78mil内距：130不变11（大型）高压电容内距=130milX：130→120milY：60→92mil內距：130不变SMD元件焊盘尺寸设计参考540编312（圆型）高压电容内距=110milX：A-16milY：B+8mil內距：C+16mil挖孔=1/3A深度=1/3B+2mil13（小型）黑色圆形电感器件代号LX：118→90milY：78→62mil內距：174→214mil14（大型）黑色圆形电感器件代号LX：166→198milY：236→176mil內距不变15Diode(小型)X：54→40milY：不变內距:54→60mil16Diode(中型)X：不变Y：不变內距：74→80mil17Diode(大型)X：不变Y：79→71mil(內砍8mil)內边：导角40x26mil內边：內砍8mil內距：86→102milSMD元件焊盘尺寸设计参考540编418VARITER零件代号RV1X：108→100milY：85→93mil內距：89→97mil挖孔：33mil深度：33mil19FUSE保险丝1026（不含）以下X：86→62milY：不变內距:52→75mil半圆槽直径21mil深度19mil20FUSE保险丝1026（不含）以上X：124→92milY：77→74mil內距：117→123mil半圆槽直径31mil深度27mil21Connector0.5PitchY：10→9milX外加6mil由47→53mil耳朵后加12mil22Connector0.65PitchY:：12mil→10.8milX：外加12mil耳朵后加12milSMD元件焊盘尺寸设计参考540编523Connector1.0Pitch宽：24→20milX外加:8mil110→118mil耳朵后加12mil24Connector1.27Pitch宽：30→26milX外加:12mil74mil→86mil耳朵后加12mil25排阻RNX：18→15milY：42→50mil內距:不变26六脚IC0.65pitch外四脚：X：12→13.5milY：36→45mil內二脚：X：12→11.5milY：36→45mil內距:不变27SOIC0.5pitchX:：不變Y:：12→8.6mil內距:不变SMD元件焊盘尺寸设计参考540编628SOIC0.65pitchX:：90→84milY:：16→10.7mil內距:：238→262mil29SOIC1.27pitchX：24→26milY：66→72mil內距：不变30变压器右pinX：100→124mil左2pinX外加:：24milY：48→64mil內距：不变31QFP0.5pitchX:：11mil→8.6milY：不变32QFP0.65pitchX：15mil→10.7milY：不变SMD元件焊盘尺寸设计参考540编733PLCCX：不变Y：不变34三脚电晶体內砍：3milX：不变Y：45→42mil內距：C+6mil35四脚电晶体椭圆形外移16mil椭圆短径缩：112→98mil椭圆短径缩：72→58mil椭圆长径下砍：1/3:32mil36五脚电晶体前3脚X：42→48mil往外：6mil前3脚Y：22→20mil后2脚X：42→42mil后2脚Y：22→30mil37Crystal振荡器X:：55→43milY：79→45mil內距:：149→209mil38BGA0.80mmPitch原寸：直径18mil开孔：直径16milSMD元件焊盘尺寸设计参考540编839BGA1.00mmPitch原寸：直径20mil开孔：直径21mil40BGA1.27mmPitch原寸：直径30mil开孔：直径24mil41J1Connecter耳朵原寸外移20mil尺寸如图示42CN1Connecter(K02I024J07I037SERIES)其余单位为mil540编2006年3月25日