The
Ultra Thin Quad Flat No Leads
package, or UTQFN,
is
a very small and thin square-shaped or rectangular surface-mount plastic package with no leads.
Instead of leads, it uses metal pads around the periphery of the package
body for electrical connection to the outside world.
It is basically a thinner version of the thin quad flat no
leads (TQFN) package.
Typical UTQFN pad counts range from 6 to
28. The body thickness of UTQFN
packages typically ranges from 0.50 mm to 0.60 mm. The pad pitch
(distance between pads) used by UTQFN packages is
usually either 0.4 mm or 0.5 mm.
Table 1. Properties of
Some Examples of UTQFN's
|
No. of Pads |
Body
Size |
Body Thickness |
Pad Pitch |
|
10 |
1.4 mm x
1.8 mm |
0.5 mm |
0.4 mm |
|
10 |
1.6 mm x
2.1 mm |
0.5 mm |
0.5 mm |
|
16 |
3 mm x
3 mm |
0.55 mm |
0.5 mm |
|
20 |
3 mm x
4 mm |
0.55 mm |
0.5 mm |
|
24 |
4 mm x 4 mm |
0.55 mm |
0.5 mm |
|
28 |
4 mm x 4 mm |
0.55 mm |
0.4 mm |
