CQFP - Ceramic
Quad Flat Pack
The
Ceramic Quad
Flat Pack,
or CQFP,
is a ceramic IC package with leads extending from all four sides of the package
body. CQFP's are predominantly square in shape, although rectangular
variants do exist.
The CQFP is just one of the many types of the quad flat pack (QFP)
package.
The CQFP comes in many body sizes, with
lead counts typically ranging from 28 to 352. Lead pitch values used by
CQFP's
range from 0.5 mm to 1.27 mm. Typical CQFP body thickness varies from
1.27 mm
to 4 mm.
Table 1. Properties of some
CQFP's
|
No. of Pins
|
Body Size
|
Body Thickness
(incl. heat
slug) |
Lead Pitch
|
|
24 |
10.16 mm x 10.16 mm |
1.78 mm |
1.27 mm |
|
48 |
11.5 mm x 11.5 mm |
2.64 mm |
0.635 mm |
|
184 |
31
mm x 31 mm |
3.5
mm |
0.65 mm |
|
240 |
32
mm x 32 mm |
3.25 mm |
0.50 mm |
|
308 |
76.2 mm x 76.2 mm |
3.80 mm |
0.635 mm |
|
 |
|
Figure 1. Example of a CQFP |
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