IPC TA-724-1998 技术评估系列洁净室标准全文

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适用范围: The continuing trend to finer features on PCBs increased the negative effect of particles on board yields. Cleanrooms provide a logical way to reduce the effect of particles, and are more critical as finer lines are required. Cleanrooms have been used since at least the 1970s to make printed circuits, but some boards are still made today without them.

IPC TA-724-1998技术评估系列洁净室