WLCSP 20 pin, Freescale KL02 package

Perhaps, would anyone know where I may find a freescale part KL02 in the WLCSP 20 ball package? Thank you for any help you can give. I downloaded the Freescale .lbr and could not find it in there.

Thanks,

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michaelkellett over 10 years ago in reply to Former Member +1

Stop wasting your time looking for ready made parts in Eagle (or any other PCB CAD system) and just make your own. It'll take you a day at the most to become adequately proficient at it and you'll gain…
michaelkellett over 10 years ago in reply to Former Member +1

If you are using a basic level free CAD tool (and from your other questions) are you sure that you have the experience to design and manufacture (or have manufactured) a pcb with 0.4mm pitch BGA chips…

0 Former Member over 10 years ago

Adding a note, Freescale sent me a .OLB file, which appears to be for Orcad or Cadence but not for Eagle. I guess another possible option would be to find a converter from Orcad format to Eagle.
Thanks!
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0 michaelkellett over 10 years ago in reply to Former Member

Stop wasting your time looking for ready made parts in Eagle (or any other PCB CAD system) and just make your own.
It'll take you a day at the most to become adequately proficient at it and you'll gain the benefit of consistent schematic appearance and footprints which actually match the assembly process you intend to use.

MK
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0 gadget.iom over 10 years ago in reply to michaelkellett

This a realisation I'm slowly coming to.
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0 Former Member over 10 years ago in reply to michaelkellett

Thanks for the advice, but I have already tried that. Just to share the specifics, the WLCSP BGA has a 0.4mm pitch. That means the balls must be roughly 0.1mm diameter more or less.
I used the Eagle editor and it will not allow resolution fine enough to build that part.

Which might explain why nobody else has apparently done it. This appears to be a built in limitation of the Cadsoft product, at least for the 30 day trial version.

Obviously, I could be incorrect on this, my ego does not tell me I am always correct. But if you think am incorrect, then please tell me specifically how to solve it.

Thanks...
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0 shabaz over 10 years ago in reply to Former Member

Hi Alan,

0.1mm is possible (if this is really the size you need). However that package recommended pad size according to Freescale's documentation (PDF) is 220um which is 0.22mm
To create it in Eagle, I just laid a SMD, then using the 'info' tool changed the roundness to 100% and the size to be 0.1x0.1 (making sure my grid was set to mm beforehand).
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0 Former Member over 10 years ago in reply to shabaz

Awesome! And thanks for that more detailed info and instructions. Have a good day there.
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0 michaelkellett over 10 years ago in reply to Former Member

If you are using a basic level free CAD tool (and from your other questions) are you sure that you have the experience to design and manufacture (or have manufactured) a pcb with 0.4mm pitch BGA chips. The document that Shabaz has referred to is worth reading but raises more questions than it answers. You can expect to spend several hundred pounds on getting a prototype board made and the parts soldered to it.
Talk to the intended pcb manufacturer and board assembler before you spend any money.

MK
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