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原装 O9503240MEDA4SI (YSO690PR 40MHZ 3.3V 20PPM) 预编程振荡
O9503240MEDA4SI |有源晶振全国产 总频差：FS±50PPM
O9503240MEDA4SI 预编程振荡器 YSO690PR 40MHZ 3.3V 20PPM SMD50
O9503240MEDA4SI 有源晶振 O9503240MEDA4SI SMD5032-4P
