EG21152BB，SL7T7 EG21152BB33 EG21152BBSL7T7 EG2-12 EG2121 EG-2121-100.000PHPA EG2121CA EG-2121CA EG-2121CA (2.5V) EG-2121CA 100.000000MHZ +/-100PPM LHPN