I also did research on this topic and found that the xQFP packages tend to fall into the 0.4 to 0.8 mm lead pitch. It is not always easy to confirm the actual lead pitch, depending on the manufacturer.
a+ --- In [email protected], "Mark Webster" <[EMAIL PROTECTED]> wrote: > > Well there are the IPC standards that define standard footprints for a whole > range of packages. There are several pages of xQFPs with different body > sizes, pitches and aspect ratios. The manufacturer will define the package > the chip is placed in depending on pin count, die area and cost. Really the > only way to be sure is to check the datasheet for the specific chip you are > using. > > > > MarkW > > > Does anybody know the different origins of the "xQFP's"? > > > > > > > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.5.432 / Virus Database: 268.17.17/661 - Release Date: 30/01/2007 > 23:30 > > > > -- > No virus found in this outgoing message. > Checked by AVG Free Edition. > Version: 7.5.432 / Virus Database: 268.17.17/661 - Release Date: 30/01/2007 > 23:30 >
