电子线束的故障原因：
      1、自然老化或损坏 线束使用时间超过了使用期限，线束的绝缘层开始慢慢裂开，机械强度开始下降，时间久了就容易导致电线与电线之间发生短路、断路、搭铁等故障。 
      2、线束端子氧化 当线束端子被完全氧化了，或者已经变形了，也会造成线束接触不良或者短路，从而让线束发生故障。
      3、电气设备发生故障 还有一种情况是因为电气设备超负荷运行、短路，从而导致线束产生故障。
      4、人为原因 最后一个导致故障的原因是人为操作不当，比如线束安装位置不合理、线束与电气设备接线错误、维修时破坏了线束部件等。 

以下是对HRS A4系列电子线的分析

A4系列A4B-2PA-2DSA电子线
    2.0mm Pitch Double Row Miniature Connectors
特点                         
    1.2mm引脚间距小尺寸样式，高密度装配
    2.多种芯数
    3.多种站板高度



本系列的产品列表明细：

Part Number	Part Number	Part Number
A3C-32P-2DSA(30)	HIF3F-10PA-2.54DS(71)	HIF3FB-10DA-2.54DSA(71)
A3C-44P-2DSA(30)	HIF3F-10PA-2.54DSA(71)	HIF3FB-16DA-2.54DSA(71)
A3C-48P-2DSA(30)	HIF3F-16PA-2.54DS(71)	HIF3FB-20DA-2.54DSA(71)
A3C-4DA-2DSA(71)	HIF3F-16PA-2.54DSA(71)	HIF3FB-26DA-2.54DSA(71)
A3C-4DA-2DSC(71)	HIF3F-20PA-2.54DS(71)	HIF3FB-30DA-2.54DSA(71)
A3C-4P-2DSA(30)	HIF3F-20PA-2.54DSA(71)	HIF3FB-34DA-2.54DSA(71)
A3C-50DA-2DSA(71)	HIF3F-26PA-2.54DS(71)	HIF3FB-40DA-2.54DSA(71)
A3C-50DA-2DSC(71)	HIF3F-26PA-2.54DSA(71)	HIF3FB-50DA-2.54DSA(71)
A3C-50DA-2DSE(71)	HIF3F-30PA-2.54DS(71)	HIF3FB-60DA-2.54DSA(71)
A3C-50P-2DSA(30)	HIF3F-30PA-2.54DSA(71)	HIF3FB-60PA-2.54DS(71)
A3C-6DA-2DSA(71)	HIF3F-34PA-2.54DS(71)	HIF3FB-60PA-2.54DSA(71)
A3C-6DA-2DSC(71)	HIF3F-34PA-2.54DSA(71)	HIF3FB-64PA-2.54DS(71)
A3C-6P-2DSA(30)	HIF3F-40PA-2.54DS(71)	HIF3FB-64PA-2.54DSA(71)
A3C-8DA-2DSA(71)	HIF3F-40PA-2.54DSA(71)	HIF3FBA-60PA-2.54DS(71)
A3C-8DA-2DSC(71)	HIF3F-50PA-2.54DS(71)	HIF3FBA-60PA-2.54DSA(71)
A3C-8P-2DSA(30)	HIF3F-50PA-2.54DSA(71)	HIF3FBA-64PA-2.54DS(71)
A3D-14DA-2DSE(71)	HIF3F-60PA-2.54DS(71)	HIF3FBA-64PA-2.54DSA(71)
A3D-44DA-2DSE(71)	HIF3F-60PA-2.54DSA(71)	HIF3FC-10PA-2.54DS(71)
A3D-62DA-2DSE(71)	GT17HN2-4DS-HU	HIF3FC-10PA-2.54DSA(71)
A3-10DA-2SV(71)	A3A-32PA-2SV(71)	A3B-44D-2C
A4B-10PA-2DS(51)	A3A-44PA-2SV(71)	A3B-44PA-2DS(51)
A4B-10PA-2DSA(51)	A3A-4DA-2SV(71)	A3B-44PA-2DSA(51)
A4B-10S-2C	A3A-4PA-2SV(71)	A3B-4D-2C
A4B-11PA-2DS(51)	A3A-50PA-2SV(71)	A3B-4PA-2DS(51)
A4B-12PA-2DS(51)	A3A-6DA-2SV(71)	A3B-4PA-2DSA(51)
A4B-12PA-2DSA(51)	A3A-6PA-2SV(71)	A3B-50PA-2DS(51)
A4B-12S-2C	A3A-8DA-2SV(71)	A3B-50PA-2DSA(51)
A4B-13PA-2DS(51)	A3A-8PA-2SV(71)	A3B-6D-2C
A4B-13PA-2DSA(51)	A3B-10D-2C	A3B-6PA-2DS(51)
A4B-14PA-2DS(51)	A3B-10PA-2DS(51)	A3B-6PA-2DSA(51)
A4B-14PA-2DSA(51)	A3B-10PA-2DSA(51)	A3B-8D-2C
A4B-15PA-2DS(51)	A3B-12D-2C	A3B-8PA-2DS(51)
A4B-15PA-2DSA(51)	A3B-12PA-2DS(51)	A3B-8PA-2DSA(51)
A4B-15S-2C	A3B-12PA-2DSA(51)	A3B-TA2630HC
A4B-16PA-2DS(51)	A3B-14D-2C	A3B-TA32HC
A4B-16PA-2DSA(51)	A3B-14PA-2DS(51)	A3C-10DA-2DSA(71)
A4B-16S-2C	A3B-14PA-2DSA(51)	A3C-10DA-2DSC(71)
A4B-18S-2C	A3B-16PA-2DS(51)	A3C-10P-2DSA(30)
A4B-2PA-2DS(51)	A3B-16PA-2DSA(51)	A3C-12DA-2DSA(71)
A4B-2PA-2DSA(51)	A3B-18D-2C	A3C-12DA-2DSC(71)
A4B-2S-2C	A3B-18PA-2DS(51)	A3C-12P-2DSA(30)
A4B-3PA-2DS(51)	A3B-18PA-2DSA(51)	A3C-14DA-2DSA(71)
A4B-3PA-2DSA(51)	A3B-20D-2C	A3C-14DA-2DSC(71)
A4B-3S-2C	A3B-20PA-2DS(51)	A3C-14P-2DSA(30)
A4B-4PA-2DS(51)	A3B-20PA-2DSA(51)	A3C-16DA-2DSA(71)
A4B-4PA-2DSA(51)	A3B-22PA-2DS(51)	A3C-16DA-2DSC(71)
A4B-4S-2C	A3B-22PA-2DSA(51)	A3C-16P-2DSA(30)
A4B-5PA-2DS(51)	A3B-24D-2C	A3C-18DA-2DSA(71)
A4B-5PA-2DSA(51)	A3B-24PA-2DS(51)	A3C-18DA-2DSC(71)
A4B-5S-2C	A3B-24PA-2DSA(51)	A3C-18P-2DSA(30)
A4B-6PA-2DS(51)	A3B-2630SCC	A3C-20DA-2DSA(71)
A4B-6PA-2DSA(51)	A3B-2630SCFC	A3C-20DA-2DSC(71)
A4B-6S-2C	A3B-26PA-2DS(51)	A3C-20P-2DSA(30)
A4B-7PA-2DS(51)	A3B-26PA-2DSA(51)	A3C-24DA-2DSA(71)
A4B-7PA-2DSA(51)	A3B-28D-2C	A3C-24DA-2DSC(71)
A4B-8PA-2DS(51)	A3B-28PA-2DS(51)	A3C-24DA-2DSE(71)
A4B-8PA-2DSA(51)	A3B-28PA-2DSA(51)	A3C-24P-2DSA(30)
A4B-8S-2C	A3B-30PA-2DS(51)	A3C-26P-2DSA(30)
A4B-9PA-2DS(51)	A3B-30PA-2DSA(51)	A3C-28DA-2DSA(71)
A4B-9PA-2DSA(51)	A3B-3236SCFC	A3C-28DA-2DSC(71)
A3A-24DA-2SV(71)	A3B-32PA-2DS(51)	A3C-28P-2DSA(30)
A3A-24PA-2SV(71)	A3B-32PA-2DSA(51)	A3C-2P-2DSA(30)
A3A-28DA-2SV(71)	A3B-32SCC	A3C-32DA-2DSA(71)
A3A-28PA-2SV(71)	A3B-36PA-2DS(51)	A3C-32DA-2DSC(71)
A3A-32DA-2SV(71)	A3B-40PA-2DS(51)	A3C-32DA-2DSE(71)
DF3-3P-2DS(01)	DF3AA-14EP-2C	DF3EA-3P-2H(21)
AP105-DF63-1618-3	DF63A-2P-3.96DSA	DF3EA-3P-2H(24)
AP105-DF63-1618-4	DF63A-3EP-3.96C	DF3EA-3P-2H(51)
AP105-DF63-1618S-1	DF63A-4EP-3.96C	DF3EA-3P-2V(21)
AP105-DF63-1618S-2	DF63A-5EP-3.96C	DF3EA-3P-2V(51)
AP105-DF63-2022-1	DF63A-6EP-3.96C	DF3EA-3P-2V(54)
DF63-1618PC	DF63M-1P-3.96DS	DF3EA-4P-2H(21)
DF63-1618PCF	DF63M-1P-3.96DS(01)	DF3EA-4P-2H(24)
DF63-1618PCFA	DF63M-1P-3.96DSA	DF3EA-4P-2H(51)
DF63-1618SC	DF63M-1P-3.96DSA(01)	DF3EA-4P-2H(54)
DF63-1618SCA	DF63M-2P-3.96DS	DF3EA-4P-2V(21)
DF63-1618SCF	DF63M-2P-3.96DS(01)	DF3EA-4P-2V(24)
DF63-1618SCFA	DF63M-2P-3.96DSA	DF3EA-4P-2V(51)
DF63-1EP-3.96C	DF63M-2P-3.96DSA(01)	DF3EA-5P-2H(21)
DF63-1S-3.96C	DF63M-2P-7.92DS	DF3EA-5P-2H(51)
DF63-2022PC	DF63M-2P-7.92DS(01)	DF3EA-5P-2V(21)
DF63-2022PCF	DF63M-2P-7.92DSA	DF3EA-5P-2V(51)
DF63-2022PCFA	DF63M-2P-7.92DSA(01)	DF3EA-6P-2H(21)
DF63-2022SC	DF63M-3P-3.96DS	DF3EA-6P-2H(51)
DF63-2022SCF	DF63M-3P-3.96DS(01)	DF3EA-6P-2V(21)
DF63-2022SCFA	DF63M-3P-3.96DSA	DF3EA-6P-2V(24)
DF63-2EP-3.96C	DF63M-3P-3.96DSA(01)	DF3EA-6P-2V(51)
DF63-2S-3.96C	DF63M-4P-3.96DSA	DF3EA-6P-2V(54)
DF63-3EP-3.96C	DF63M-4P-3.96DSA(01)	DF3EA-7P-2H(21)
DF63-3P-7.92DS	DF63R-1P-3.96DSA	DF3EA-7P-2H(51)
DF63-3P-7.92DSA	DF63R-1S-3.96C	DF3EA-7P-2V(21)
DF63-3P-7.92DSA(01)	DF63R-2P-3.96DSA	DF3EA-7P-2V(24)
DF63-3S-3.96C	DF63R-2P-7.92DSA	DF3EA-7P-2V(51)
DF63-4EP-3.96C	DF63R-2S-3.96C	DF3EA-8P-2H(21)
DF63-4P-3.96DS	DF63R-3P-3.96DSA	DF3EA-8P-2H(51)
DF63-4P-3.96DS(01)	DF63R-3P-3.96DSA(01)	DF3EA-8P-2H(54)
DF63-4S-3.96C	DF63R-3P-7.92DSA	DF3EA-8P-2V(21)
DF63-5EP-3.96C	DF63R-3P-7.92DSA(01)	DF3EA-8P-2V(51)
DF63-5P-3.96DS	DF63R-3S-3.96C	DF3EA-9P-2H(21)
DF63-5P-3.96DS(01)	DF63R-4P-3.96DSA	DF3EA-9P-2H(51)
DF63-5P-3.96DSA	DF63R-4S-3.96C	DF3EA-9P-2V(21)
DF63-5P-3.96DSA(01)	DF63R-5P-3.96DSA	DF3EA-9P-2V(51)
DF63-5S-3.96C	DF63R-5P-3.96DSA(01)	DF3E-4P-2H(54)
DF63-6EP-3.96C	DF3E-3P-2V(51)	DF3E-4P-2V(21)
DF63-6P-3.96DS	DF3E-3P-2V(54)	DF3E-4P-2V(24)
DF63-6P-3.96DS(01)	DF3E-4P-2H(21)	DF3E-4P-2V(51)
DF63-6P-3.96DSA	DF3E-4P-2H(24)	DF3E-4P-2V(54)
DF63-6P-3.96DSA(01)	DF3E-4P-2H(51)	DF3E-5P-2H(24)
DF63-6S-3.96C	DF1B-8DP-2.5DS(01)	DF1BZ-26DP-2.5DS
DF63A-1EP-3.96C	DF1B-8DP-2.5DSA(01)	DF1BZ-26DP-2.5DSA
DF63A-2EP-3.96C	DF1B-8DS-2.5RC	DF1BZ-28DP-2.5DS
DF63A-2P-3.96DSA	DF1B-8EP-2.5RC	DF1BZ-28DP-2.5DSA
DF1B-20P-2.5DS(01)	DF1B-8ES-2.5RC	DF1BZ-2P-2.5DS
DF1B-20P-2.5DSA(01)	DF1B-8P-2.5DS(01)	DF1BZ-2P-2.5DSA
DF1B-20S-2.5R	DF1B-8P-2.5DSA(01)	DF1BZ-30DP-2.5DS
DF1B-22DEP-2.5RC	DF1B-8S-2.5R	DF1BZ-30DP-2.5DSA
DF1B-22DES-2.5RC	DF1B-9EP-2.5RC	DF1BZ-34DP-2.5DS
DF1B-22DP-2.5DS(01)	DF1B-9ES-2.5RC	DF1BZ-34DP-2.5DSA
DF1B-22DP-2.5DSA(01)	DF1B-9P-2.5DSA(01)	DF1BZ-36DP-2.5DS
DF1B-22DS-2.5RC	DF1B-9S-2.5R	DF1BZ-36DP-2.5DSA
DF1B-2428PC	DF1B-R24	DF1BZ-3P-2.5DS
DF1B-2428PCF	DF1B-R24A(06)	DF1BZ-3P-2.5DSA
DF1B-2428SC	DF1B-R24F	DF1BZ-40DP-2.5DS
DF1B-2428SCA	DF1B-R24FA(06)	DF1BZ-40DP-2.5DSA
DF1B-2428SCF	DF1B-R26	DF1BZ-4DP-2.5DS
DF1B-2428SCFA	DF1B-R26A(06)	DF1BZ-4DP-2.5DSA
DF1B-2428SCFA(05)	DF1B-R26F	DF1BZ-4P-2.5DS
DF1B-24DEP-2.5RC	DF1B-R26FA(06)	DF1BZ-4P-2.5DSA
DF1B-24DES-2.5RC	DF1B-R28	DF1BZ-5P-2.5DS
DF1B-24DP-2.5DS(01)	DF1B-R28A(06)	DF1BZ-5P-2.5DSA
DF1B-24DP-2.5DSA(01)	DF1B-R28F	DF1BZ-6DP-2.5DS
DF1B-24DS-2.5RC	DF1B-R28FA(06)	DF1BZ-6DP-2.5DSA
DF1B-24PR	DF1B-T2428HR	DF1BZ-6P-2.5DS
DF1B-24PRF	DF1B-T2428PHR	DF1BZ-6P-2.5DSA