SMT钢板零件开孔设计规范

1/8SMTLWDL1mil10mil10milW10mil1:1D9mil(0.23mm)2mil(0.5mm)LWDL1:120mil20milW20mil1:1D16mil(0.4mm)3mil(0.075mm)LWD22mil22milL22mil1:1W1:1D16mil(0.4mm)4mil(0.1mm)2/8SMTPitch0.4mm4mil0.1mm7.5mil0.5mm4mil0.1mm9.5mil0.65mm4mil0.1mm12mil0.8mm1118mil1.0mm1122mil1.27mm1130milIC,QFPIC7012milQFP6012milLWDHLWDHLWDH0603260.4L4mil0805400.4L6mil12062mil0.4L8mil12061:10.4L10mil1206:L120mil10milLWLW3/8SMTPitchWL0.5mm9.5mil1:14mil1:14mil0.65mm12mil1:14mil1:14mil0.8mm18mil1:14mil1:14mil1.0mm22mil1:14mil1:14mil1.27mm30mil1:14mil1:14milPitch1.27mm28mil,24mil1.0mm22mil,20mil0.8mm17mil,15mil0.5mm11.5mil,11milSocketBGAPitch1.27mm32mil,24mil1.0mm24mil,20milPitch0.8mm15mil0.5mm12mil2mil4/8SMT1/21/2120mil12milL11W11L1W1200mil,12mil1/21/2LWL1W11/21/2LWL1W1L11W11L120mil10milL1W1400mil,12mil5/8SMT4PinRB4Pin2milLW1L1WW1=1/3WL1=1.1LW30milW11/2=1/3WL1=1.1LW30milW11/2W6/8SMTWW1LW1=1/3WLLD150mil21/4W151~400mil31/4W401~600mil41/4W600mil51/4WWLDDDW1=1/3WLWW1L7/8SMT1/41/41/41/41/41/41/41/4WQFP1/4WLWTWTLW2(L+W)T8/8SMT