Quad Flat Pack, a fine-pitch SMT package that is rectangular or square with gull-wing shaped leads on all four sides. The lead pitch of a QFP is typically either 0.8mm or 0.65mm, although there are variations on this theme with smaller lead pitches: TQFP also 0.8mm; PQFP tooled at either 0.65mm (0.026″) or 0.025″ and SQFP at 0.5mm (0.020″).
Any of these packages can have a wide variety of lead counts from 44 leads on up to 240 or more. Although these terms are descriptive, there are no industry- wide standards for sizes. Any printed circuit designer will need a spec sheet for the particular manufacturer’s part, as a brief description like “PQFP-160” is inadequate to define the mechanical size and lead pitch of the part.
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See LQFP, PQFP, CQFP and TQFP. Make your turnkey PCB assembly with components sourcing service at MADPCB.