AN2348 Datasheet, PDF (6/17 Pages) STMicroelectronics – package description and recommendations for use

Packing specifications and labeling description
AN2348
3.3
Reels
The sealed carrier tape with the Flip Chip is reeled on seven-inch reels (see Figure 6 for reel
mechanical dimensions). These reels are compliant with EIA-481-C standard. In particular,
they are made of an antistatic polystyrene material. Color of the reel may vary depending on
supplier.
Dice quantity per reel is 5000 or 10000 or 15000 (with typical package thickness equal to
600 µm). In compliance with the IEC 60286-3, each reel contains a maximum of 0.1% empty
cavities. Two successive empty cavities are not allowed. Each reel may contain components
coming from 2 different wafer lots.
Each reel has a minimum leader of 400 mm and a minimum trailer of 160 mm (compliant
with EIA 481-C and IEC 60286-3 standards). The leader makes up a portion of carrier tape
with empty cavities and sealed by cover tape at the beginning of the reel (external side). The
leader is affixed to the last turn of the carrier tape by using adhesive tape. The trailer is at
the end of the reel and consists of empty, sealed cavities (see Figure 7).
Figure 6. Seven-inch reel mechanical dimensions.
Material: ANTISTATIC POLYSTYRENE
A
B
C
D
180 max 1.5 min
All dimensions in mm
13
+0.5
-0.2
20.2 min
E
60 min
W1 (Hub)
8.4
+1.5
-0
W3
W2
(external)
14.4 max
8.4
+2.5
-0.5
Figure 7. Leader and trailer
Leader and trailer
End
Start
Top
cover
tape
No components
Trailer
160mm min .
Components
No components
100mm m^.in
Leader
400mm min.
Sealed with cover tape
User direction of feed
6/17
Doc ID 12282 Rev 5