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当前位置:首页 > 电子/通信 > 电子设计/PCB > PCB设计中的焊盘命名规范(cadence)
AllegroAllegroAllegroAllegro焊盘命名规范~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~珠联璧合珠联璧合珠联璧合珠联璧合xlzhuxlzhuxlzhuxlzhu@sohu.com@sohu.com@sohu.com@sohu.com11.1.1.1.焊盘命名规范焊盘命名规范焊盘命名规范焊盘命名规范1.11.11.11.1钻孔型规则焊盘1.1.11.1.11.1.11.1.1圆型焊盘padpadpadpadMMMMMMMMcircircircirNNNNNNNNddddpadpadpadpad代表padstackMMMMMMMM代表焊盘外径circircircir代表焊盘外形为圆形circleNNNNNNNN代表焊盘孔径dddd代表钻孔的孔壁必须上锡,可以用来导通各个层面。1.1.21.1.21.1.21.1.2正方型焊盘padpadpadpadMMMMMMMMsqsqsqsqNNNNNNNNddddpadpadpadpad代表padstackMMMMMMMM代表焊盘的宽width和高heightsqsqsqsq代表焊盘外形为方形squareNNNNNNNN代表焊盘孔径dddd代表钻孔的孔壁必须上锡,可以用来导通各个层面。1.1.31.1.31.1.31.1.3长条孔padpadpadpadMM_NNMM_NNMM_NNMM_NNobobobobAA_BBAA_BBAA_BBAA_BBddddpadpadpadpad代表padstackMMMMMMMM代表焊盘的外椭圆宽width____代表数字的分隔符NNNNNNNN代表焊盘的外椭圆高heightobobobob代表焊盘外形为长圆oblongAAAAAAAA代表焊盘的内椭圆宽widthBBBBBBBB代表焊盘的内椭圆高heightdddd代表钻孔的孔壁必须上锡,可以用来导通各个层面。AllegroAllegroAllegroAllegro焊盘命名规范~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~珠联璧合珠联璧合珠联璧合珠联璧合xlzhuxlzhuxlzhuxlzhu@sohu.com@sohu.com@sohu.com@sohu.com21.21.21.21.2表贴型规则焊盘1.2.11.2.11.2.11.2.1长方形焊盘smdsmdsmdsmdMM_NNMM_NNMM_NNMM_NNsmdsmdsmdsmd代表它是一个SMD的padstack,单一层面并没钻孔。MMMMMMMM代表焊盘的宽width____代表数字的分隔符NNNNNNNN代表焊盘的高height1.2.21.2.21.2.21.2.2圆形焊盘smdsmdsmdsmdMMMMMMMMcircircircirsmdsmdsmdsmd代表它是一个SMD的padstack,单一层面并没钻孔。MMMMMMMM代表焊盘的直径circircircir代表圆形焊盘1.2.31.2.31.2.31.2.3长圆形焊盘smdsmdsmdsmdMM_NNMM_NNMM_NNMM_NNobobobobsmdsmdsmdsmd代表它是一个SMD的padstack,单一层面并没钻孔。MMMMMMMM代表焊盘的椭圆宽width____代表数字的分隔符NNNNNNNN代表焊盘的椭圆高heightobobobob代表焊盘外形为长圆oblong1.31.31.31.3FlashFlashFlashFlash焊盘1.3.11.3.11.3.11.3.1圆孔型TRTRTRTROD_ID_OD_ID_OD_ID_OD_ID_焊盘命名规范~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~珠联璧合珠联璧合珠联璧合珠联璧合xlzhuxlzhuxlzhuxlzhu@sohu.com@sohu.com@sohu.com@sohu.com3代表开口角度,缺省表示开口角度为0。1.3.21.3.21.3.21.3.2长圆孔型TRTRTRTRMM_NN_RW_MM_NN_RW_MM_NN_RW_MM_NN_RW_(RW)代表开口角度,缺省表示开口角度为0。1.41.41.41.4过孔命名规范viaviaviaviaMM-NNMM-NNMM-NNMM-NN-bga-bga-bga-bgaviaviaviavia代表为过孔MMMMMMMM代表孔外径----代表数字的分隔符NNNNNNNN代表孔径-代表尺寸与角度的分隔符bgabgabgabga代表BGA过孔,缺省为一般过孔1.51.51.51.5定位孔命名规范holeholeholeholeMM_NNMM_NNMM_NNMM_NNp/up/up/up/uholeholeholehole代表为过孔MMMMMMMM代表外径____代表数字的分隔符AllegroAllegroAllegroAllegro焊盘命名规范~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~珠联璧合珠联璧合珠联璧合珠联璧合xlzhuxlzhuxlzhuxlzhu@sohu.com@sohu.com@sohu.com@sohu.com4NNNNNNNN代表孔径pppp表示金属化(plated)////代表后面参数可选uuuu表示非金属化(unplated)2.2.2.2.要素尺寸要素尺寸要素尺寸要素尺寸以下尺寸来自cadence的焊盘规范。2.12.12.12.1钻孔孔径管脚大小PINPINPINPINSIZESIZESIZESIZE导通孔FHSFHSFHSFHS元件管脚直径最大值FHS=PINSIZE+12mil2222.2.2.2.2PADPADPADPAD直径正常情况下钻孔为圆形,圆形PAD与孔径之差至少16mil。导通孔FHSFHSFHSFHS焊盘PADPADPADPAD(milmilmilmil)FHS≤40milFHS+20mil40FHS≤75FHS+30mil75≤FHSFHS+50mil2222.3.3.3.3AntiAntiAntiAntipadpadpadpad焊盘阻焊盘ANTI_PADANTI_PADANTI_PADANTI_PADPADANTI_PAD=PAD+15mil2222.4.4.4.4SolderMaskSolderMaskSolderMaskSolderMask和PasteMaskPasteMaskPasteMaskPasteMask焊盘外径SolderMaskSolderMaskSolderMaskSolderMaskPasteMaskPasteMaskPasteMaskPasteMaskFilmMaskFilmMaskFilmMaskFilmMaskPADPADPADPADPADPADPAD2.52.52.52.5ThermalThermalThermalThermalPadPadPadPad阻焊盘ANTI_PADANTI_PADANTI_PADANTI_PAD热焊盘ThermalPadANTI_PADANTI_PADANTI_PADANTI_PADANTI_PADAllegroAllegroAllegroAllegro焊盘命名规范~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~珠联璧合珠联璧合珠联璧合珠联璧合xlzhuxlzhuxlzhuxlzhu@sohu.com@sohu.com@sohu.com@sohu.com52.62.62.62.6FLASHFLASHFLASHFLASH仅仅适用于负片孔径DDDD(milmilmilmil)缺口宽度开口角度D≤28mil8mil45°28milD≤80mil10mil80milD15mil2.72.72.72.7过孔尺寸对于金属化孔,使用圆形引线时,孔径比引线直径一般大0.2mm(8mil)~0.6mm(24mil),视板厚选取,一般厚板选大值,薄板选小值。过孔尺寸关系表板厚直线宽度~2mm32milD=W+8~16milA=1.5~2D,A≥9mil≥2mm≥32milD=W+16~24mil在同一块电路板上,孔径的尺寸规格应当少一些,并尽量采用下表的标准孔。标准过孔尺寸表过孔名焊盘大小(mmmmmmmm)孔径(mmmmmmmm)VIA40-150.400.15VIA45-200.450.20VIA55-250.550.25VIA60-250.600.25VIA60-300.600.30VIA65-300.650.30VIA65-350.650.35VIA70-350.700.35VIA70-400.700.40VIA75-400.750.40VIA80-450.800.45VIA85-450.850.45VIA90-450.900.45VIA85-500.850.50AllegroAllegroAllegroAllegro焊盘命名规范~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~珠联璧合珠联璧合珠联璧合珠联璧合xlzhuxlzhuxlzhuxlzhu@sohu.com@sohu.com@sohu.com@sohu.com6VIA90-500.900.50VIA95-500.950.50VIA90-550.900.55VIA95-550.950.55VIA100-551.000.55VIA95-600.950.60VIA100-601.000.60VIA105-601.050.60建议少用18mil以上过孔,因为较大的过孔不方便塞绿油。
本文标题:PCB设计中的焊盘命名规范(cadence)
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