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贴插RTC63421 CXA3219M MB64H419 11C91-DC M1533-A1 N
原装进口 RTC63421M 询价拍
M22100B1 PCM54HP FA7607 RTC63421A原
停产 RTC-63423 RTC实时时钟IC RTC-63421 RTC-63421M 32.768KHz