This part is a miniature AT or BT cut strip crystal units with a low profile package,It is with ristance weld.49 seri is with lower height of ls than 2.5mm. 頻率范圍:49SA:3.200~66.000MHz;498.000~66.000MHz 調(diào)整頻差:在25度&plun;10~&plun;50ppm 工作溫度范圍:負(fù)20度到正70度