PQFP - Plastic
Quad Flat Pack
The
Plastic Quad
Flat Pack,
or PQFP,
is an IC package with leads extending from all four sides of the package
body. PQFP's are predominantly square in shape, although rectangular
variants do exist.
The PQFP is just one of the many types of the quad flat pack (QFP)
package.
The PQFP comes in many body sizes, with
lead counts ranging from 32 to 208. Lead pitch values used by PQFP's
range from 0.4 mm to 1 mm. Typical PQFP body thickness varies from 2 mm
to 3.8 mm.
Lead coplanarity is very
critical for PQFP's, and should be within ±4
mils for this package.
Table 1. Properties of some
PQFP's
|
Part
#
|
No.
of Pins
|
Body
Size
|
Body
Thick-
ness
|
Lead
Pitch
|
Foot-
print
|
Qty
Per Tray
|
Tape
Width
|
Tape
Pitch
|
Qty
13" Reel
|
|
QFP44
|
44 |
10mm
sq
|
2.0mm
|
0.80mm
|
3.2mm
|
96 |
24 |
24 |
500 |
|
QFP52 |
52 |
10mm
sq
|
2.0mm
|
0.65mm
|
3.2mm
|
96 |
24 |
24 |
500 |
|
QFP52 |
52 |
14mm
sq
|
2.67mm
|
1.00mm
|
3.9mm
|
84 |
32 |
24 |
350 |
|
QFP64 |
64 |
10mm
sq
|
2.0mm
|
0.50mm |
3.2mm
|
96 |
24 |
24 |
500 |
|
QFP64 |
64 |
14mm
sq
|
2.67mm
|
0.80mm
|
3.9mm
|
84 |
32 |
24 |
350 |
|
QFP64
|
64 |
14mm
x 20mm
|
2.71mm
|
1.00mm
|
3.2mm
|
66 |
44 |
32 |
200 |
|
QFP80
|
80
|
14mm
sq
|
2.67mm
|
0.65
mm |
3.9mm
|
84 |
32 |
24 |
350 |
|
 |
|
Figure 1. Examples of PQFP's (not in scale with
each other) |
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