The BC46 Series from Bomar Crystal is a RF Quartz Crystal with Frequency 32.768 kHz, Frequency Stability ±20ppm, ±50ppm, ±100ppm, Frequency Tolerance ±10ppm, ±20ppm, ±50ppm, Drive Power Level 1 µW, Load Capacitance 4 to 12.5 pF. Tags: Surface Mount. More details for BC46 Series can be seen below.