Transport Media (Continued)
Methods of immediate container packing include proper in-
sertion of devices or components into plastic molded trays
and rails/tubes, proper mounting of components onto tape
and reel, or proper placement in corrugated cartons. The
immediate containers are then packed into intermediate con-
tainers (plastic bags or corrugated boxes/cartons) with
specified quantities of trays, rails/tubes or tape and reels.
Outer/shipping containers are then fully or partial packed
with intermediate boxes to meet order quantity requirements
and to further insure protection from transportation hazards,
additional dunnage filler material is required to fill voids
inside the intermediate and outer/shipping containers.
General Packing Requirements
NSC packing methods and materials are designed based on
the following considerations:
— Optimum protection to the products—it must provide
adequate protection from handling (electrostatic dis-
charge) and transportation hazards;
— Ease of handling—it should be easy to assemble, load
and unload products in and from it; and
— Impacts to the environment—it shall be reusable and
recyclable.
Levels of Product Packing
IMMEDIATE CONTAINER
The first level of product packing is the immediate container.
The type of immediate container used varies with the prod-
uct or component being packed. In addition, the immediate
container design and material depend on the fragility, size
and profile of the product. There are four basic primary types
of immediate containers used by NSC; plastic rails/tubes,
plastic trays, tape and reel, and corrugated and chipboard
boxes.
A) Rails/tubes are basically made of acrylic or polyvinyl
chloride (PVC) plastic. The electrical properties of the mate-
rial are altered by either intrinsically adding carbon fillers,
and/or topically coating with antistatic solution. Plastic rails/
tubes are non-bakeable. Refer to
Table 1
for package types
using rail/tube as primary container, and for information on
material and recyclability.
TABLE 1. Plastic Rail/Tube and Stopper Requirements
Package Type Rail Stopper Recyclability
Matrial Code/Symbol (Note 1) Type Material Code/Symbol (Note 1)
DIP’s
Plastic Polyvinylchloride 03/PVC Pin Polyamide (Nylon) 07/PA Yes
Ceramic Polyvinylchloride 03/PVC Pin Polyamide (Nylon) 07/PA Yes
Sidebraze Polyvinylchloride 03/PVC Pin Polyamide (Nylon) 07/PA Yes
Cerpack Polyvinylchloride 03/PVC Pin Polyamide (Nylon) 07/PA Yes
Flatpack Polyvinylchloride 03/PVC Pin Polyamide (Nylon) 07/PA Yes
TO-220/263 Polyvinylchloride 03/PVC Pin Polyamide (Nylon) 07/PA Yes
TapePak Polyvinylchloride 03/PVC Plug Krayton (Rubber) 07/SBR Yes
PLCC Polyvinylchloride 03/PVC Plug Polyvinylchloride 03/PVC Yes
SOP/SSOP/TSSOP Polyvinylchloride 03/PVC Plug Polyvinylchloride 03/PVC Yes
Note 1: ISO 1043-1 International Standards—Plastic Symbols.
SAE J1344 Marking of Plastic Parts.
ASTM D 1972–91 Standard Practice for Generic Marking of Plastic Products.
DIN 6120, German Recycling Systems, RESY for paperbased and VGK for plastic packing materials.
B) Plastic trays are categorized as injection molded and
vacuum formed. Molded plastic trays are generally static
dissipative and are mostly bakeable (125+ degrees C.).
Vacuum formed are conductive and non-bakeable.
Table 2
shows those package types with plastic trays as primary
immediate containers, and also shows material and recycla-
bility information.
TABLE 2. Plastic Tray and Strap Material Requirements
Package Type Tray Strap
Material Code/Symbol
(Note 2) Recyclability Material Code/Symbol
(Note 2) Recyclability
PQFP/MQFP/ BGA/MQUAD
CPGA & PPGA
(higher leadcount)
Polarylsulfone 07/PAS Yes Polypropylene Strap 05/PP Yes
LCC/ Cerquad/ LDCC/ CPGA
& PPGA
(lower leadcount)
Packing Considerations
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