The BC55 Series from Bomar Crystal is a RF Quartz Crystal with Frequency 3.579 to 64 MHz, Frequency Stability ±10ppm to ±50ppm, Frequency Tolerance ±10ppm to ±50ppm, Drive Power Level 100 µW, Load Capacitance 10 to 100 pF. Tags: Thru Hole. More details for BC55 Series can be seen below.