发送询价
CJ2H-CPU68 模块 电源 cpu 顺丰速运非直接代换
非直接代换是指不能进行直接代换的IC稍加修改外围电路，改变原引脚的排列或增减个别元件等，使之成为可代换的IC的方法。
代换原则：代换所用的IC可与原来的IC引脚功能不同、外形不同，但功能要相同，特性要相近；代换后不应影响原机性能。
1.不同封装IC的代换
相同类型的IC芯片，但封装外形不同，代换时只要将新器件的引脚按原器件引脚的形状和排列进行整形。例如，AFT电路CA3064和CA3064E，前者为圆形封装，辐射状引脚；后者为双列直插塑料封装，两者内部特性完全一样，按引脚功能进行连接即可。双列IC AN7114、AN7115与LA4100、LA4102封装形式基本相同,引脚和散热片正好都相差180°。前面提到的AN5620带散热片双列直插16脚封装、TEA5620双列直插18脚封装，9、10脚位于集成电路的右边，相当于AN5620的散热片，二者其它脚排列一样，将9、10脚连起来接地即可使用。
2.电路功能相同但个别引脚功能不同IC的代换
代换时可根据各个型号IC的具体参数及说明进行。如电视机中的AGC、视频信号输出有正、负极性的区别，只要在输出端加接倒相器后即可代换。
3.类型相同但引脚功能不同IC的代换
这种代换需要改变外围电路及引脚排列，因而需要一定的理论知识、完整的资料和丰富的实践经验与技巧。
4。有些空脚不应擅自接地
内部等效电路和应用电路中有的引出脚没有标明，遇到空的引出脚时，不应擅自接地，这些引出脚为更替或备用脚，有时也作为内部连接。
5.用分立元件代换IC
有时可用分立元件代换IC中被损坏的部分，使其恢复功能。代换前应了解该IC的内部功能原理、每个引出脚的正常电压、波形图及与外围元件组成电路的工作原理。同时还应考虑：
⑴信号能否从IC中取出接至外围电路的输入端：
⑵经外围电路处理后的信号，能否连接到集成电路内部的下一级去进行再处理（连接时的信号匹配应不影响其主要参数和性能）。如中放IC损坏，从典型应用电路和内部电路看，由伴音中放、鉴频以及音频放大级成，可用信号注入法找出损坏部分，若是音频放大部分损坏，则可用分立元件代替
CJ2H-CPU68 模块 电源 cpu 顺丰速运
| CJ2H-CPU66 | R88M-K1K030T-O-Z |
| CJ2H-CPU66-EIP | R88M-K1K030T-S2-Z |
| CJ2H-CPU67 | R88M-K1K030T-Z |
| CJ2H-CPU67-EIP | R88M-K1K520C-BOS2-Z |
| CJ2H-CPU68 | R88M-K1K520C-BO-Z |
| CJ2H-CPU68-EIP | R88M-K1K520C-BS2-Z |
| CJ2M-CPU11 | R88M-K1K520C-B-Z |
| CJ2M-CPU12 | R88M-K1K520C-OS2-Z |
| CJ2M-CPU13 | R88M-K1K520C-O-Z |
| CJ2M-CPU14 | R88M-K1K520C-S2-Z |
| CJ2M-CPU14(Q) | R88M-K1K520C-Z |
| CJ2M-CPU15 | R88M-K1K520F-BOS2-Z |
| CJ2M-CPU31 | R88M-K1K520F-BO-Z |
| CJ2M-CPU32 | R88M-K1K520F-BS2-Z |
| CJ2M-CPU33 | R88M-K1K520F-B-Z |
| CJ2M-CPU34 | R88M-K1K520F-OS2-Z |
| CJ2M-CPU35 | R88M-K1K520F-O-Z |
| CJ2M-MD211 | R88M-K1K520F-S2-Z |
| CJ2M-MD212 | R88M-K1K520F-Z |
| R88A-CAGA003B | R88M-K1K520H-BOS2-Z |
| R88A-CAGA003S | R88M-K1K520H-BO-Z |
| R88A-CAGA005B | R88M-K1K520H-BS2-Z |
| R88A-CAGA005S | R88M-K1K520H-B-Z |
| R88A-CAGA010B | R88M-K1K520H-OS2-Z |
| R88A-CAGA010S | R88M-K1K520H-O-Z |
| R88A-CAGA015B | R88M-K1K520H-S2-Z |
| R88A-CAGA015S | R88M-K1K520H-Z |
| R88A-CAGA020B | R88M-K1K520T-BOS2-Z |
| R88A-CAGA020BR | R88M-K1K520T-BO-Z |
| R88A-CAGA020S | R88M-K1K520T-BS2-Z |
| R88A-CAGA020SR | R88M-K1K520T-B-Z |
| R88A-CAGA050S | R88M-K1K520T-OS2-Z |
| R88A-CAGB003B | R88M-K1K520T-O-Z |
| R88A-CAGB003BR | R88M-K1K520T-S2-Z |
| R88A-CAGB003S | R88M-K1K520T-Z |
| R88A-CAGB003SR | R88M-K1K530C-BOS2-Z |
| R88A-CAGB005B | R88M-K1K530C-BO-Z |
| R88A-CAGB005BR | R88M-K1K530C-BS2-Z |
| R88A-CAGB005S | R88M-K1K530C-B-Z |
| R88A-CAGB005SR | R88M-K1K530C-OS2-Z |
| R88A-CAGB010B | R88M-K1K530C-O-Z |
| R88A-CAGB010BR | R88M-K1K530C-S2-Z |
| R88A-CAGB010S | R88M-K1K530C-Z |
| R88A-CAGB010SR | R88M-K1K530F-BOS2-Z |
| R88A-CAGB015B | R88M-K1K530F-BO-Z |
| R88A-CAGB015BR | R88M-K1K530F-BS2-Z |
| R88A-CAGB015S | R88M-K1K530F-B-Z |
| R88A-CAGB015SR | R88M-K1K530F-OS2-Z |
| R88A-CAGB020B | R88M-K1K530F-O-Z |
| R88A-CAGB020BR | R88M-K1K530F-S2-Z |
| R88A-CAGB020S | R88M-K1K530F-Z |
| R88A-CAGB020SR | R88M-K1K530H-BOS2-Z |
| R88A-CAGB030B | R88M-K1K530H-BO-Z |
| R88A-CAGB030BR | R88M-K1K530H-BS2-Z |
| R88A-CAGB030S | R88M-K1K530H-B-Z |
| R88A-CAGB030SR | R88M-K1K530H-OS2-Z |
| R88A-CAGB040B | R88M-K1K530H-O-Z |
| R88A-CAGB040BR | R88M-K1K530H-S2-Z |
| R88A-CAGB040S | R88M-K1K530H-Z |
| R88A-CAGB040SR | R88M-K1K530T-BOS2-Z |
| R88A-CAGB050B | R88M-K1K530T-BO-Z |
| R88A-CAGB050BR | R88M-K1K530T-BS2-Z |
| R88A-CAGB050S | R88M-K1K530T-B-Z |
| R88A-CAGB050SR | R88M-K1K530T-OS2-Z |
| R88A-CAGC003B | R88M-K1K530T-O-Z |
| R88A-CAGC003S | R88M-K1K530T-S2-Z |
| R88A-CAGC020B | R88M-K1K530T-Z |
| R88A-CAGD003B | R88M-K20030H-BOS2-Z |
| R88A-CAGD003BR | R88M-K20030H-BO-Z |
| R88A-CAGD003S | R88M-K20030H-BS2-Z |
| R88A-CAGD003SR | R88M-K20030H-B-Z |
| R88A-CAGD005B | R88M-K20030H-OS2-Z |
| R88A-CAGD005BR | R88M-K20030H-O-Z |
| R88A-CAGD005S | R88M-K20030H-S2-Z |
| R88A-CAGD005SR | R88M-K20030H-Z |
| R88A-CAGD010B | R88M-K20030T-BOS2-Z |
| R88A-CAGD010BR | R88M-K20030T-BO-Z |
| R88A-CAGD010S | R88M-K20030T-BS2-Z |
| R88A-CAGD010SR | R88M-K20030T-B-Z |
| R88A-CAGD015B | R88M-K20030T-OS2-Z |
| R88A-CAGD015BR | R88M-K20030T-O-Z |
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