Leo,
I was referring to the QFP44 PCB footprint in the default PCB library supplied with Protel98. If you measure the primitives using hot keys "RM" (Report Measure), you will see that the supplied footprint is nearly a perfect fit for your device - all I would do to improve it for hand assembly would be to modify the silkscreen outline and increase the pad width a couple of mils. To edit the existing QFP PCB footprint using the library editor takes less than 5 minutes.
Using the library editor from the datasheet to build a new PCB footprint takes about 10 minutes. You really should give it a try - depending on others to do the work for you will almost certainly lead to disaster. If you learn to do it yourself, you can take into account the soldering method you will be using, the alignment tolerances of any placement equipment, the board real estate available, etc.
Regards -
At 06:38 AM 1/18/05, you wrote:
Hi Harry,
I hope you were not referring to a schematic library. I don't think it would be possible to edit a pcb library file in 10 minutes.
Also, I have found quite a few .lib files that match the QFP44 criteria but all of them differ in some way or the other. That is why I am specifically looking for a 44pin TQFP package for PIC18f452.
Regards, Leo
--- Harry Selfridge <[EMAIL PROTECTED]> wrote:
> You must have missed the "QFP44" footprint that is > included in the Protel98 > default library. If it doesn't suit you, you have > two more options: 1. Use > the library editor to make a footprint - it will > take you less than 10 > minutes; or 2. Use the library editor to edit the > QFP44 footprint to your > liking. > > > At 02:40 AM 1/17/2005, you wrote: > >Dear Sir/madam, > > > >I am currently using Protel98 for my schematic and > PCB development. I am > >in need for a 44pin TQFP PCB footprint for the > PIC18f452(Microchip) SMD chip. > >Kindly mail me the the PCB footprint if possible or > guide me where I can > >find one. > > > >Kind Regards > >Leo > snip > > > > ____________________________________________________________ > You are subscribed to the PEDA discussion forum > > To Post messages: > mailto:[email protected] > > Unsubscribe and Other Options: > http://techservinc.com/mailman/listinfo/peda_techservinc.com > > Browse or Search Old Archives (2001-2004): > http://www.mail-archive.com/[email protected] > > Browse or Search Current Archives (2004-Current): > http://www.mail-archive.com/[email protected] > >
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