This makes no sense. (I do electronics)<p>"Hand-solderable"? Every QFN package is hand-solderable, too, using hot air, and is much smaller than the TQFP. And what is the benefit of "hand-soldering" if you still need to use DDR3 DRAM? It won't come in TQFP, and for good reasons, and good luck connecting it to that Allwinner CPU.<p>If you want tiny chips that can be hand-soldered, go with microcontrollers (ESP32 or Kinetis), which have everything on-board. You really do not need the overhead, complexity and incidental bugginess of Linux for most things, trust me. Also, choose QFN, not TQFP, use hot-air and have the entire thing soldered in 30 seconds.