其應至少支撐在支架3個邊緣的1英寸範圍內 PCB板. 根據實踐經驗, 厚度為31-62密耳的PCB支撐點之間的距離應至少為4英寸; 對於厚度大於93密耳的PCB, 支撐點之間的距離應至少為5英寸. 採取這一措施可以提高PCB的剛度,消除PCB可能出現的共振.
某些PCB在决定使用哪種安裝科技之前,通常需要考慮以下因素.
1) The size and shape of the PCB.
2) Number of input and output terminals.
3) Available equipment space.
4) Desired ease of loading and unloading.
5) Type of installation accessories.
6) Required heat dissipation.
7) The required shieldability.
8) The type of circuit and its relationship with other circuits.
PCB allocation requirements
1) No PCB area for mounting components.
2) The influence of the plug-in tool on the installation distance between two PCBs.
3) Specially prepare mounting holes and slots in PCB設計.
4) When the plug-in tool is to be used in the equipment, 尤其是它的尺寸應該考慮在內.
5) A plug-in device is required, 通常永久固定在 PCB組件 帶鉚釘.
6) In the PCB mounting frame, 需要特殊設計,如承重法蘭.
7) The adaptability of the plug-in tools used to the size, PCB的形狀和厚度.
8) The cost involved in using plug-in tools includes both the price of the tool and the increased expenditure.
9) In order to fasten and use plug-in tools, 要求在一定程度上能够進入設備內部.