TQFN - Thin Quad Flat No Leads

                                                  

The Thin Quad Flat No Leads package, or TQFN, 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 bottom of the package body for electrical connection to the outside world.  It is basically a thinner version of the quad flat no leads (QFN) package.

  

Typical TQFN pad counts range from 8 to 68. The maximum body thickness of TQFN packages is 0.8 mm. The body sizes of typical TQFN's range from 3 mm. square to 10 mm. square.  The pad pitch (distance between pads) used by TQFN packages is usually either 0.4 mm or 0.5 mm. 

   

Table 1. Properties of Some Examples of TQFN's

Part Number

No. of Pads

Body Size

Body Thickness

Pad Pitch

TQFN-8

8

3 mm x 3 mm

0.75 mm

0.65 mm

TQFN-16

16

3 mm x 3 mm

0.75 mm

0.4 mm

TQFN-20

20

4 mm x 4 mm

0.75 mm

0.5 mm

TQFN-24

24

4 mm x 5 mm

0.75 mm

0.5 mm

TQFN-36

36

6 mm x 6 mm

0.75 mm

0.5 mm

TQFN-48

48

6 mm x 8 mm

0.75 mm

0.5 mm

TQFN-56

56

7 mm x 7 mm

0.75 mm

0.4 mm

TQFN-68

68

10 mm x 10 mm

0.75 mm

0.5 mm

   

Figure 1.  Example of a TQFN package

   

See more IC Package Types

  

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