Sparkfun

Standard \'Watch\' or Real-Time-Clock crystal. 32.768kHz means it is precisely half of a 16-bit counter. Start counting at 0x8000 (or 32768). When ...

Standard frequency crystals - use these crystals to provide a clock input to your microprocessor. Rated at 20pF capacitance and +/- 50ppm stability...

These are very small surface mount quartz crystals used where size is a concern. Ideal for use with the nRF2401 ICs. **2****0ppm** * **18pF** l...