行业分类
smt焊接允收标准1
日期:2009-12-10 10:20  点击:389

理想状况 Target Condition
1.各接_都能座落在各焊|的中央,而未l生偏滑。
1.All the leads footprint is centered on the lands

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允收状况1 Accept Condition

1.各接_已l生偏滑,所偏出焊|以外的接_,尚未超^接_本身度的1/2W。(XQ1/2W )
2.偏移接_之c焊|外之垂直距xR5mil (0.13mm)。(SR5mil)
1.The length of the lead footprint shifted off the land(X)shall less 1/2 width of lead
2.The clearance(S)between lead shifted off and land shall over 5 mil

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拒收状况1 Reject Condition
1.各接_已l生偏滑,所偏出焊|以外的接_,已超^接_本身度的1/2W(MI)。(X>1/2W )
2.偏移接_之c焊|外之垂直距x<5mil (0.13mm)(MI)。(S<5mil)
3.Whichever is rejected .

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