On Dec 12, 7:08*pm, msg wrote:
Greetings,

I would appreciate recommendations or pointers to suppliers of (low cost)
QFP prototyping breakout boards (for hand soldering) who would have one
for 128 pin, .5mm devices with 38 and 26 pins/side (38 x 26 x 38 x 26); the
universal ones have a pattern that only seems to work for square devices
and I have yet to find one that specifically describes accepting a package
as I have described.

Many thanks,

Michael

We have the same issue with a 24 x 16, 0.8mm device. It would cost
around $100 to make 20 to 30 of them, but cheaper if mixed with other
boards.