¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io

Re: Offset adjust to compensate for pad spacing error in fine pitch components.


JPD Borgna
 

Hi all, I hope that with this we can leave te "case closed":

With the attached script and this parameters: ./pqgen.pl 52 2 pq208 197 0 1000 100
I created a "ruller" for compare with the kicad package.
According to a datasheet from Xilinx PK007 (v1.2) June 18, 2004 about the PQFP (PQ208/PQG208) Package
the space betwen pads should be 19.68503937 in mills of inches, i used 197 (rounding) for this ruller.
When comparing on the screen this ruller with the package that comes with kicad i can see that the pads are not
perfect, the differences varies from pad to pad, and some in the middle ar ok.
So (lucky me!) i think the package will work with no problems.
From here to 2 to 3 weeks (:-P) im going to have a board designed with this package. Then ill tell you the real
thing: if it works or im fired....
Ive also attached a board with two modules, the one in the component has the pads from the ruller, the one
in the solder side is the one wich comes with kicad.


Saludos, Juan Pablo.

--
Juan Pablo Daniel Borgna -- T¨¦cnico Electr¨®nico
INTI-Electr¨®nica e Inform¨¢tica
Direcci¨®n: Avenida General Paz 5445 entre Albarellos y Constituyentes
CC157 (CP B1650KNA) San Mart¨ªn, Bs. As., Argentina TE:+(5411)4724-6200





Archivo adjunto: pqgen.pl
Un archivo adjunto a este email ha sido removido
debido a que el nombre del archivo no est¨¢ permitido.

Archivo adjunto: tests.zip/tests.cache.lib
Un archivo adjunto a este email ha sido removido
debido a que el nombre del archivo no est¨¢ permitido.

Join [email protected] to automatically receive all group messages.