Quad Flat Package

Quad Flat Package is an integrated circuit package with leads extending from each of the four sides. It is used primarily for surface mounting (SMD); socketing is rare, and hole mounting is not possible. There are versions having from 32 to 304 pins with a Pin pitch ranging from 0.4 to 1.0 mm. Special cases include LQFP (Low profile QFP) and TQFP (Thin QFP).

=Reference=


 * http://en.wikipedia.org/wiki/Quad_Flat_Package