Fox Electronics has developed the most compact watch crystal, measuring only 1.6mm x 1.1mm x 0.5mm (length x width x height). Although the new FX161 crystal is small in size, its operating frequency is the same as the previous model and has many of the same high standards, making it one of the most efficient tuning forks to date. The company stated that the crystal's ultra-thin shape and excellent performance optimize the minimum space available in many portable and handheld applications, including wearable devices.
The operating frequency of the new surface mount equipment (SMD) is 32.768 kHz. The frequency tolerance at 25 ° C is ± 20ppm, and each long-term Delta C2 is -0.046ppm. The standard load capacitance is 12.5pF, and 7pF or 9pF is optional.
The tuning fork has a lifetime of only ± 3ppm in the first year, and has the function of terminating in the gold plating of nickel. The overall operating temperature range is -40C to + 85C, the turnaround temperature range is + 20C to + 30C, and the storage temperature is -55C to + 125C. The maximum welding time at 260 ° C is 10 seconds.
The company said that the new watch crystal can withstand the equivalent series resistance of 90kohm and the insulation resistance of 500Mohm at 100VDC.
