TXC贴片晶振32.768KHZ RTC 9H03270009无源封装SMD XTAL ¥0.55 30M贴片晶振SMD3225 CRYSTAL TXC石英谐振器7M30000091 ¥0.55 SMD5032有源晶振7C25002008 25MHZ OSC TXC石英振荡器 ¥2.45 TXC晶振代理商深圳现货7V27000050 SMD3225 27M无源晶振原装 ¥0.45 40M蓝牙模块贴片晶振SMD 2.5*2.0mm XTAL TXC晶技代理8Z40000023 ¥0.55 石英有源晶振7X19200039 3.2*2.5mm 19.2MHZ TXC振荡器 ¥2.45