DocID025707 Rev 2

13/21

TN1163

Packing specifications and labelling description

20

3.4

Final packing

Each reel is heat-sealed under inert atmosphere in a transparent recyclable antistatic

polyethylene bag (minimum of 4 mils material thickness). Reels are then packed in

cardboard boxes. A full description of the packing process is shown in Figure 6.

Figure 6. Packing process

3.5

Labelling

To trace each production lot and shipment lot, the 7 inch reels and the cardboard box are

identified by labels that mention the device part number, the shipped quantity and

traceability information.

The trace code printed on the labels ensures backward traceability from the lot received by

the customer to each step of the process. It includes in/ out dates, as well as quantities

during diffusion, assembly, test phase, and in the final storage. Likewise, forward traceability

is able to trace a lot history from the wafer fab to the customer location.

3.6

Storage and shipping recommendations

WLCSP reels are packed under inert N2 atmosphere in a sealed bag. For shipment and

handling, reels are packed in a cardboard box.

ST consequently recommends the following shipping and storage conditions:

•

Relative humidity between 15 and 70 %

•

Temperature ranging from -55 to +150 °C.

•

Components in a non opened sealed bag can be stored for 6 months after shipment.

•

Components in tape and reel must be protected from exposure to direct sunlight.

Note:

Moisture sensitivity level (MSL as per JEDEC J-STD-020) is not applicable to WLCSP

devices since there is no plastic encapsulation.