My Teensy 3.2-based product includes a uSD card for internal storage.
I've been testing with SanDisk Pixtor from BestBuy and have seen no failures. My test cards happen to be 32GB.
I'm looking for a spec and source for uSD cards with the following requirements:
  • >= 1GB (yes, size requirements are small)
  • cheap
  • reliable (the cards are internal, and not easily user-swappable)
  • 1000 quantity batches.

Can anyone point me to a spec and source that fits?