表面贴装设计和焊盘图形标准通用要求
IPC-7351不只是一个强调新的元件系列更新的焊盘图形的标准,如方型扁平无引线封装QFN (Quad Flat No-Lead)和小外型无引线封装SON (Small Outline No-Lead);还是一个反映焊盘图形方面的研发、分类和定义——这些建立新的工业CAD数据库的关键元素——的全新变...
IPC-7351不只是一个强调新的元件系列更新的焊盘图形的标准,如方型扁平无引线封装QFN (Quad Flat No-Lead)和小外型无引线封装SON (Small Outline No-Lead);还是一个反映焊盘图形方面的研发、分类和定义——这些建立新的工业CAD数据库的关键元素——的全新变...
基于80C51单片机源码公开的Small RTOS v1.20.3-...
·Ive been working with Windows CE for almost as long as its been in existence. A Windows programmer for many years, Im amazed by the number of differe...
Abstract: Class D amplifiers are typically very efficient, making them ideal candidates for portable applications that require longbattery life and ...
Photodiodes can be broken into two categories: largearea photodiodes with their attendant high capacitance(30pF to 3000pF) and smaller area...