IPC-A-610国际标准中英文对照4
2Heatsink-Contact散热片――接触片arget-Class1,2,3目标——等级1,2,3·Componentandheatsinkareinfullcontactwiththemountingsurface
组件和散热片与安装表面完全接触·Hardwaremeetsspecifiedattachmentrequirements
部件满足规定的接触要求
Figure图4-641
Heatsink散热片Acceptable-Class1,2,3可接受的——等级1,2,3·Componentnotflush
组件不平齐·Minimum75%contactwithmountingsurface
至少有75%与安装表面接触·Hardwaremeetsmountingtorquerequirementsifspecified
如果有规定,部件满足安装的转距要求Figure图4-651
Heatsink间隙散热片Defect-Class1,2,3缺点——等级1,2,3·Componentisnotincontactwithmountingsurface
组件没有接触到安装表面·Hardwareislooseandcanbemoved
部件松弛可以移动
Figure图4-661
Heatsink2
Gap散热片间隙5
1Orientation方向5
1Orientation-Horizontal方向——水平Target-Class1,2,3目标——等级1,2,3•Componentsarecenteredbetweentheirlands
组件位于焊盘中央•Componentmarkingsarediscernible
组件标识清晰可见•Nonpolarizedcomponentsareorientedsothatm