The STC22K33N27-19.200M from Suntsu Electronics, Inc. is a 19.2 MHz temperature-compensated crystal oscillator (TCXO) with clipped sine wave output at 3.3 V, in a 4-SMD no-lead package.
The STC22K33N27-12.800M from Suntsu Electronics, Inc. is a 12.8 MHz temperature-compensated crystal oscillator (TCXO) with clipped sine wave output at 3.3 V, in a 4-SMD no-lead package.