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2. Details


2.2 Guarding against static electricity
Basically guarding against static electricity means first of all stopping it from occurring, then if it does, discharging it appropriately (rapid discharge of a semiconductor device may damage the device). For this reason, it is important to curb friction-charged static electricity caused by vibration during transportation, and to ensure an appropriate environment for handling of semiconductor devices is maintained. Personnel handling semiconductor devices must also be knowledgeable about static electricity. The following discusses some measures to take when packing semiconductor devices, as well as examples of general precautions.


Measures for packing

Table 2-1 Guarding against static electricity during packing

Forms of packing Guarding against static electricity
Magazine Antistatic additive is applied to the surface of plastic magazines, except for magazines made of aluminum or plastic material milled with carbon. Electrically conductive trays (plastic material milled with carbon) are used.
Tray Electrically conductive trays (plastic material milled with carbon) are used.
Bag (aluminum laminate and transparent plastic) Aluminum laminate bags with static electricity diffusion are used, or transparent plastic bags.
Tape Emboss taped products use static electricity diffusion carrier tapes and reels.


Surface electrical resistance of packing material
NEC Electronics defines the surface electrical resistance of packing material described above as 1012.
(This conforms to “Static electricity diffusion 105 to 1012 as defined in ANSI/EIA541.)



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