芯片封装类型.pdf

Product Information Allegro Package Designations This document provides reference information as tion for that device. Not all options are available an aid to differentiating the device package types for any particular package designation or device used by Allegro™ MicroSystems. It provides cross type, and provision of certain configurations may references to the package designation , an Allegro be subject to minimum volume or NCNR (noncan- code that is integrated into the device part number: cellation, nonreturn) limitations. • alphabetical listing of Allegro package For clarity and differentiation, the drawings are designators, with differentiating specifications and reference illustrations schematic and not to scale, however, a representa- tive footprint is provided at approximately actual • alphabetical listing of common or obsolete size of the package body when mounted on a PCB . package designators, cross-referenced to Allegro The drawings do not represent all possible configu- designators rations of that device, or any particular device, and • key to interpreting Allegro part numbers for may have features that vary according to supplier package designators preference within specifications, such as pin 1 • key to interpreting Allegro terms