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英文原文-SMT 工艺说明书

上传者:业精于勤 |  格式:doc  |  页数:41 |  大小:1370KB

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k process should pared to reflow soldering so all precautions should be take into account: assemblies (WIP) ponents should be dry or those must be baked beforehand.РDRY STORAGE CONDITIONSРDry storage is an interim, short-term storage for humidity ponents and assemblies (WIP) during production line stoppages and short breaks like weekends if these materials are not protected by Moisture Barrier Packages.РDry storage is meant only for storage purposes, not for drying. In case of double-sided assemblies, which have OSP surface finishing, time between first and second soldering process must be within specified limit; dry storage time should be included.РDry storage specificationРTemperatureР25 ±5 ºCРHumidityР< 10 % RHРMax. storage timeРPer MSL classificationРControl methodРMarking ponent reels

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