The M12000J194 is a 12MHz 20pF ±10ppm ±30ppm SMD3225-4P crystal that is RoHS compliant and manufactured by East Crystal. It is a surface mount device that measures 4.2mm x 2.5mm and is typically used in oscillators, filters, resonators and timing clocks. It can operate over a temperature range of -20°C to 70°C and provides excellent frequency stability, low noise, and harmonic distortion.