VT-200-F-12.5PF20PPM VT-200F-12.5PF20PPM VT200F-12.5PF20PPM VT-200-F-12.5PF5PPM VT-200-F32.768K VT-200-F32.768K(12.5 VT-200-F32.768K(6 VT-200-F32.768KHZ VT-200F-6PF20PPM VT200F-6PF20PPM