SC-20S 7PF 20PPM SC-20S 9PF 20PPM SC-20S,12.5PF,+/-20PPM SC-20S,32.768kHz,20PPM,12.5pF SC-20S,32.768kHz,20PPM,7pF SC-20S,32.768kHz,20PPM,9pF SC-20S-12.5PF20PPM SC20S-12.5PF20PPM SC-20S32.768K SC-20S32.768K7PF