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原装 O97050147456MEDA4SI (YSO690PR 14.7456MHZ 3.3V 20PPM)
原装 O97050147456MADA4SI (YSO690PR 14.7456MHZ 1.8V 20PPM)
O97050147456MADA4SI 预编程振荡器 YSO690PR 14.7456MHZ 1.8V 20