非屏蔽线缆如何搞定EMC
EMC设计的过程中，设计师不能总是求助于屏蔽线缆来解决电磁兼容问题。在成本和正确端接屏蔽层要求的受欢迎自由度上，非屏蔽类型的线缆具有非常大的优势。在线缆传送信号的地方，如果电路本身不敏感或者在发射不高的情况下，以及线缆共模电流的干扰也不大或者可以通过其他手段（如滤波）在接口上加以控制的情况下，以下三种非屏蔽线缆设计还是相当令人满意的。
双绞线缆是减小磁性与容性耦合干扰拾取特别有效且简单的一种方法。将线缆绞合趋向于确保电容的均匀一致分布。线缆到地的电容和到外部源的电容都是平衡的，这意味着共模容性耦合也是平衡的；若是其他电路也是平衡的，就会具有很高的共模抑制能力。
在减小低频磁性拾取问题上，线缆绞合是最有用的，因为它几乎可以将磁性环路的面积减小到零。每一次绞合都使感应场的方向相反，所以若假设存在均匀的外部场，那么两个连续的绞合会抵消线缆与场之间的交感。现在，在每一根线的末端，有效的拾取环路被减小到很小的面积。随着单位长度上绞合次数的增大，屏蔽效能可得到改善和提高。
图 1
在产品中，并行数据传输普遍使用扁平线缆，它允许连接器有大量的终端，因此也是最经济的。扁平线缆在机壳内的路径必须加以谨慎考虑，因为未屏蔽的线缆允许磁场或电场耦合到其结构上。
图 2 扁平电缆
扁平线缆中地线的排列方式很是考究。传输高频数据的扁平线缆的性能对地回路的结构非常敏感。在整个线缆中只使用一根地导线，这是成本最低的一种结构[见图3（a）]。这样做，将使在线缆另一侧的信号形成一个非常大的感性环路，以及电路之间的串扰和共地阻抗耦合。它是设计中最不期望使用的一种方案，但是若因为其他的原因而不得不应用，设计师必须设法使导线数量最少，而且至少在线缆中间放置一根地导线，同时将干扰最大的或最敏感的信号靠近地线放置。最好的结构莫过于每一根信号导线都有它单独的地回路[见图3（b）]；这样，差不多就能具有和地平面正确端接的线缆[见图3（d、e）]一样好的性能，而且这也很容易实现。串扰和共阻抗耦合问题从根本上得到了解决。它的缺点是使扁平线缆和连接器尺寸、成本大大上升。还有一种可以接受的方案就是图3（c）中的方案----每两根信号导线分配一个回路线。与图（b）中的方案相比，将线缆的利用率提高了50%，还保证了小的感性环路面积。对于引脚受限的应用，需要分析单个的信号，以确定哪里是最佳放置的回流引脚的位置。若能将双绞线结构引入扁平线缆，还可以进一步提高图3（b）方案的屏蔽性能。
图 3
还有一种特殊的方法，能够在产品内部电路板之间携带高频信号，与地平面扁平线缆相比，它也能提供相当好的性能，同时也更便宜和易于使用，它就是地平面柔性连接器组件，如下图所示。
图 4 地平面柔性连接器组件
双面柔性连接器的一面分配给了地平面，而另一侧则用来传送信号走线。在它的每一端，表面安装连接器上可选的引脚将通过过孔连接到地平面。这种非常靠近信号走线的低阻抗的回路保证了在电路两端形成最小的地噪声。
这种结构提供了一种简单、廉价和有效的大量终端连接系统。柔性连接器组件可以设计成任何的物理配置，一些供应商也会按照标准部件做简单的设计。这种结构化的方法和安装非常像标准的印制电路板，除了衬底比较薄而且柔软，而电路板则是坚固的纤维玻璃。这种方法非常适合于宽带数据总线，例如TFT显示、离板存储器和通信端口以及任何传送高频时钟或总线的连接。
图 5
综上所述，好的非屏蔽线缆设计也能最优的解决电磁兼容问题。
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本文由三年不鸣转载自韬略科技，原文标题为:非屏蔽线缆如何搞定EMC，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。
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□,Z10703,FCL30-10500-2000,V46916-U1-U6,84070□□□□TB900L,84821012H,84800005N,84800114N,CLS0600IR01/05.5BL15/15-0200CM100,FCL30-20300-2000,84850008T,84820010F,84950890 □TB900L,84880402N,CLS0400IR08/08.0BL24/24-0300CM100,KXST– XST 32 325 CM,FCL30-80200-2000,84950483□688ZGELO,FCL16-90500-2000,84810515N,K XST – XST 64 325 CM,84950132X222,84800113N,FCL31-40300-2000,84800004N,SKUP-2XFCP-0010,FCL15-60200-1000,84850007T,ZXHP-CC0,84820011F,84950887□STB600,ZF0507-KC0,Z012-SA0-3.6-6.0,84D01400S444,84880318N,FCL31-X,CLS0100IR08/08.0BL27/27-0300CM100,84R00500T000,84950802 □,84810514N,8401201L□TB900L,84821014H,CLS0100IR08/08.0BL23/23-0300CM100,SFER-SK0-47-0040,SKUP-2XFCP-0020,NSKUP-2XE2K-0030,FCLA-15D-2000,CLS0600IR08/08.0BL23/2
【选型】FieldLink®系列AS接口专用总线电缆，扁平电缆和圆电缆可选
在工厂自动化中，AS接口系统被广泛应用于各个领域，是作为传统的传感器和执行器并行布线的替代方案而开发的。莱尼（Leoni）FieldLink®系列AS接口专用总线电缆包括扁平电缆和圆电缆，其中黄色剖面电缆是一种2芯无屏蔽扁平电缆，为执行器和传感器传输数据和电力，特定的应用可选黑色版本。
器件选型 发布时间 : 2019-05-17
LEONI Automotive Cables
型号- 6620-F,180 E,8770,260 T W,2512-F,7130-D,9020-B,5820-B,7710-D,110,125 XS,2X0.13 CUSN FLEX,5240-D,5010-C,5060-B,5120-C,8780,125 XE,120,10304,3010-B,1100,5710-C,2X0.22 CUAG,10301,CW 129 C,10300,10303,10302,6010,2X0.22,5070-B,8790,9710-B,9010-C,5130-C,810,12Y,811,7020-B,15401,4505,6020,2X0.35,4520,9030-B,5830-C,1370,10403,820,5180-C,4510,12701,10402,10401,4530,6030,7170-B,2510-F,1810,9730-C,2X0.35 CUSN,18201-D,9715-B,13202,13201,200 G AL,5020-B,5810-C,4540,6040,2521-F,2 X 0.30 CUSN FLEX,10503,10502,10505,1820,10504,10506,14302,6710,14303,14301,5005-C,10501,5030-D,CW 013 A,4550,6610,10151,2012,2511-F,9040-B,2011,2010,2 X 0.50 CUSN FLEX,7060-B,10153,5250-D,5080-B,2023,2522-F,2022,2021,7120-D,2020,10602,10601,10603,1840,5140-C,2015,2X0.22 CUAG FLEX,2013,14401,16701,7010-C,7Y,7025-B,2030,8010,150 C W,5150-C,2026,2025,2024,2X0.13 CUSN,10131,7040-C,15702,15701,9110-C,15151,R 2X0.22 CUSN,2040,10701,10703,2710,10702,1620,10707,2035,10706,14501,12201,6410,8710,260 R,7730-D,2721,7110-D,2720,1630,11201,10111,Y...,11202,11204,210 F,5040-B,150 C,150 A,210 F W,8720,CW 003 A,6Y. 2X0.13 CUAG.R 2 X 0.17 CU AG,2520-F,7160-B,10801,1401,2610,1400,5002-C,260 T,5210-C,12301,7050-B,14601,4010,260 R W,9120-B,5050-B,8730,8610,9060-B,18171,5110-C,200 G,310,2 X 0.13,1650,5720-D,11301,8740,4020,7140-D,7720-B,125 S,125 P,5160-C,1301,1300,5001-C,5230-C,10101,7030-B,CW 127 C,14701,8750,7150-B,180 E W,210,211,5170-C,1310,5220-C,8760,9070-B,10206,220,2 X 0.25 CUSN FLEX,10207,2410,4710,10202,12502,10201,10204,10203,12501
【选型】韬略科技（TOP-FLIGHT）展频IC、叠层共模/绕线共模/大电流共模/BDL滤波器、ESD、高分子材料、TVS、晶体闸流管、一体成型功率电感选型指南
目录- 公司简介 时钟展频IC BDL EMI 滤波器 大电流共模滤波器 EMI+ESD 复合器件 叠层共模滤波器/绕线共模滤波器 大功率TVS 高分子聚合物静电抑制器 先进陶瓷静电抑制器 TVS管/晶体闸流管 一体成型功率电感和EMC测试项目 各国电子产品认证要求
型号- TEPC0R2V05B1X,0.2KP-SMF,TLDCM7035-2-501TF,TMMPL111004,TF2010A4X SERIES,5KP-SMC,TESC3R0V05B1X,TF0806A2X430MT,TLCML2012-2-121,TEVD12R0V24B1X,TSSBXXXB1X,TEVC1R0V05B1X,TESD500R0V05B1X,3128,TEVA0R4V05D4X,TLDCM1513-2-301TF,TESB3R0V24B1X,1108,TSSCXXXB1X,TF2010A4X,5KP-SMC SERIES,TSMAXXXB1X SERIES,TF2010A4X900MT,0.4KP-SMA SERIES,TEVD300R0V05D1X,TLCML2012-2-900,6.6KP SERIES,TF2010A4X121MT,10KP SERIES,TEPC0R2V12B1X,TEVC3R0V05B1X,5KP,TEVC25R0V05B1X,TSSDXXXB1X SERIES,TSSBXXXB1X SERIES,TEVG15R0V24B2X,TF2010A4X201MT,TEVC10R0V3B1X,TF0806A2X670MT,TEPB0R2V05B1X,TESC0R15V05B1,6.6KP,TEF0806A2X900MT,TF0806A2X900MT,TF1210A2X900MT,TF2010A4X670MT,TEF1210A2X900MT,TEPB0R2V12B1X,TEPC0R2V09B1X,2501,TEF2012A4X101MT,TEVB20R0V12B1X,TF0806A2X,TEVD0R6V05B1X,TLCML2012-2-201,8KP,15KP SERIES,15KP,TEVH0R6V05D2X,TEVJ0R4V05D4X,TMMPI040402,TMMPL131205,TESC3R0V24B1X,0.2KP-SMF SERIES,TF1210A2X650MT,TSSDXXXB1X,TEF1210A2X500MT,0.4KP-SMA,TSMAXXXB1X,0.6KP-SMB SERIES,TEVG0R6V05D2X,5228,TF0806A2X SERIES,1.5KP-SMC SERIES,TLDCM4745-2-102TF,TEVB10R0V3B1X,1.5KP-SMC,TEVB25R0V05B1X,5KP SERIES,8KP SERIES,10KP,TESD400R0V14B1X,TEVD22R0V15B1X,TEPC0R05V24B1X,TMMPI050502,TEVD0R7V05D4X,TEPB0R2V09B1X,TEVB0R5V05B1X,TGMPL020201,TLCML2012-2-371,TEVP0R4V05D2X,TF2010A4X161MT,0.6KP-SMB,TEVB3R0V05B1X,TLCML4532-2-601,TEVD0R6V3B1X,TSSCXXXB1X SERIES,TEVD1R5V05B1X,TGMPI020101,TLDCM1211-2-701TF,TLCML4532-2-282,TEVC15R0V12D1X,TEF1210A2X350MT,TF1210A2X350MT,TESB3R0V05B1X,TMMPI070603
【应用】韬略科技BDL滤波器用于直流电机，显著抑制电机辐射噪声
本文主要介绍韬略科技新型BDL滤波器在直流电机上的应用，除了对抑制电机辐射噪声有显著效果外，也能应用于如IC信号线，电源线，和差分信号线上。其新型且独特的电理特性，相较于普通电容会有更好的EMC效果。
应用方案 发布时间 : 2021-05-08
韬略科技车载以太网共模电感和滤波器，为不同标准和应用下的EMC问题提供专器专用方案
针对不同的测试标准和应用场景，要选择合适的元器件，以此达到事半功倍的效果，特别是针对EMC问题，有专器专用的说法。韬略科技经过多年的技术积累，推出了自己在百兆网(TECMI3225-2-201TF)和千兆网（TECMI3225-2-800TF）这块的技术方案，给广大工程师多提供了一种解决方案。
应用方案 发布时间 : 2024-11-04
维峰电子（WCON）牛角/简易牛角/IDC插座/DIP插头/卡边缘连接器 & 扁平电缆选型指南
目录- Assembly instruction 0.80-1.00mm Box Header Connector 1.27*1.27mm IDC Socket/Dip Plug Connector/Box Header/Ejector Header 1.27*2.54mm Box Header/IDC Socket/Ejector Header/Dip Plug Connector 2.00mm Box Header/Ejector Header/IDC Socket/Dip Plug 2.54mm Box Header/Ejector Header/IDC Socket/Dip Plug/Card Edge Flat Cable
型号- 3132-XXMGXBD00T1,3132-XXMGXBD00T2,3131-XXMGXBD00T1,3131-XXMGXBD00T2,5225-XXYPSXBX01,3125-XXRGXBK00T1,3220-XXMXXBXA1,3212-XXRXXBXT1,3141-XXXSXBK00TX,3122-XXRGXBK00T1,3124-XXRGXBK00T1,3150-XXXGXBK00TX,5226-XXUPSXBW01,3221-XXSXXBXA1,5222-XXXPSXBX01,3100-XXSXXB188X1,5341-XXPSMB01,3113-XXRSXBK00A1,3810-XXXXXGX01,3150A-XXMGXBK00T1,3230-XXSXXBXT1,3121-XXRGXBK00T1,3150A-XXMGXBD00TX,3130-XXAGXBK00XX,3136-XXMGXBD00TX,3210-XXPXXBXX1,5211-XXDXSXXN01,5221-XXUPXXBX01,3110A-XXXXXBK00XX,3810-XXSXNGN01,3240-XXXXXBXXX,5260-XXBPXXBHX1,5226-XXUPSXBN01,3113-XXXXXBK00X1,3221-XXMXXBXA2,3221-XXMXXBXA1,3110A-XXMGXBD00A1,3211-XXRXXBXT1,3112-XXXXXBK00X1,G3810-XXXD01,3130-XXAGXBK00X1,3124A-XXSGXBD00T1,3210-XXRXXBXA1,3100-XXSXXB154X1,3136A-XXMGXBK00TX,5212-XXYXSXXW01,3124A-XXMGXBD00TX,5350-XXBSXB01,5350-XXBSXB02,3150A-XXMGXBK00TX,3124-XXMGXBD00T1,3121B-XXXXXBK00TX,3241-XXRXXBXX2,3241-XXRXXBXX1,3121A-XXXXXBK00TX,3136-XXAGXBK00X1,3112-XXRGXBK00T1,3113-XXPXXBK00T1,3231-XXXXXBXXX,5330-XXPSXBXX,3100-XXSXXB143X1,3110A-XXMGXBK00A1,3212-XXMXXBXT1,3124A-XXSGXBK00T1,3131-XXRGXBK00T1,3100-XXMXXB115X1,3111-XXRGXBK00T1,3123-XXMGXBD00T1,3110-XXRGXBK00T1,3132-XXRGXBK00T1,3100-XXSXXB117X1,3143-XXMGXBK00T1,3150A-XXXGXBK00TX,3122-XXMGXBK00T2,3150A-XXMGXBK00T2,3122-XXMGXBK00T1,5212-XXYXSXXN01,5211-XXDXSXXW01,3230-XXMXXBXT1,3131A-XXXXXBK00TX,3131B-XXXXXBK00TX,3212-XXPXXBXX1,3124-XXMGXBK00T1,3140-XXMGXBK00T1,3212-XXSXXBXT1,3121-2HXXB01,3121-XXMGXBK00T2,3121-XXMGXBK00T1,3221-XXRXXBXA1,3111-XXMGXBD00T1,3122-XXXXXBK00TX,3131A-XXSGXBK00T1,3130-XXRGXBK00XX,3231-XXRXXBXT1,3211-XXSXXBXT1,3113-XXPSXBK00A1,F1U-B28GXXD0-XXXX-1X,3141-XXRGXBK00T1,3141-XXRGXBK00T2,5260-XXBPXXBXAX,3131-XXSGXBK00T1,5251-XXDBSXXX01,3143-XXRGXBK00T1,3100-XXSXXB092X1,3100-XXMXXB191X1,3123-XXMGXBD00TX,3221-XXXXXBXXX,3110A-XXSGXBK00A1,3124-XXSGXBD00T1,5330-XXPSXB01,3130-XXRGXBK00X1,3223-XXSXXBLX1,3124-XXXXXBK00T1,5211-XXDBSXXX01,3223-XXRXXBSX1,3132-XXSGXBD00T1,3240-XXMXXBXA1,3223-XXRXXBXA1,3150A-XXAGXBK00TX,3230-XXXXXBXXX,3230-XXRXXBXT2,3230-XXRXXBXT1,3100-XXSXXB175X1,3111-XXXXXBK00T1,5224-XXYPSXBX01,5226-XXYPXXBW01,3100-XXMXXB127X1,5260-XXBPSXBHA1,3100-XXSXXB114X1,5225-XXUPSXBN01,5221-XXUPSXBN01,3132-XXXXXBK00TX,5225-XXUPSXBW01,3100-XXXGXBXXXT1,5221-XXXPSXBX01,3136-XXAGXBK00T1,3125-XXSGXBK00T1,3100-XXMXXB095X1,5224-XXYPSXBN01,5251-XXDBSXBW01,3150-XXMGXBK00TX,3121-XXSGXBK00T1,3220-TPSN01,5232-XXUPSXBW01,3140-XXSGXBK00T1,3124A-XXMGXBD00T1,3136A-XXMGXBK00T1,5222-XXYPSXBW01,3100-XXMGXBXXXT1,3100-XXMXXB117X1,3150A-XXAGXBK00T1,3130-XXXXXBK00TX,3100-XXMXXB178X1,5242-XXYPSXBW01,3124A-XXSGXBD00TX,5242-XXYPSXBN01,3131-XXXXXBD00TX,3133-XXMGXBK00T2,3210-HXXB01,3133-XXMGXBK00T1,3121B-XXRGXBK00T1,3223-XXSXXBXA1,5222-XXYPSXBN01,3210-XXSXXBXA1,5232-XXUPSXBN01,3100-XXMXXB120X1,5226-XXYPXXBN01,3150-XXMGXBK00T2,3150-XXMGXBK00T1,3223-XXSXXBSX1,5350-XXBSXXXX,3131-XXMGXBK00T2,3231-XXSXXBXT1,5224-XXYPSXBW01,F1U-A30GXXX0-XXXX-XX,3131-XXMGXBK00T3,5320-XXPSXB01,3136-XXXXXBK00TX,3132-XXRGXBK00XX,3110-XXMGXBK00T1,3134-50MXXBK00TX,3110-XXMGXBK00T2,3110-XXXXXBD00TX,3131-XXMGXBK00T1,3170-XXXG5BK00TX,5260-XXBPSXBWA1,5260-XXBPSXBWA2,3130-XXSGXBK00X1,3131A-XXMGXBK00T1,3111-XXSGXBK00T1,5212-XXYPSXBX01,3131A-XXMGXBK00T2,3131B-XXMGXBK00T2,3132-XXSGXBD00XX,3131A-XXMGXBK00T3,3110-XXSGXBK00T1,3112-XXSGXBK00T1,3131B-XXMGXBK00T1,3130-XXSGXBD00XX,5243-XXYPSXBN01,3210-XXXXXBXXX,5232-XXUPSXBX01,5223-XXYPSXBN01,5242-XXYPSXBX01,F1U-C28GXXD0-XXXX-1X,5310-XXPXXB02,5310-XXPXXB01,3140-XXXXXBK00T1,F2U-C28MXXD0-XXXX-1X,3121A-XXSGXBK00T1,3100-XXSXXB098X1,3130-XXSGXBD00X1,3121B-XXSGXBK00T1,3170-XXSG5BK00T1,5310-XXBSXB02,5310-XXBSXB01,3110-XXSGXBD00T1,3132-XXSGXBK00XX,3210-XXPXXBLX1,3124A-XXAGXBK00T1,3143-XXXXXBK00T1,3100-XXSXXB112X1,3100-XXSXXB158X1,3124A-XXXXXBK00T1,3111-XXSGXBD00T1,3130-XXSGXBK00XX,3242-XXRXXBXTX,3100-XXSXXB109X1,FXU-X28XXXD0-XXXX-XX,G5220-XXDX01,3170-XXMG5BK00T1,3100-XXMXXB157X1,3124-XXXXXBD00T1,3100-XXSXXB124X1,3110A-XXAGXBK00A1,3220-XXXXXBXX1,3113-XXSSXBK00A1,3114-XXSSXBK00A1,3130-XXMGXBK00X2,3130-XXMGXBK00X1,3123-XXXXXBD00TX,G5226-XXDB01,3121A-XXMGXBK00T1,3121A-XXMGXBK00T2,3121B-XXMGXBK00T1,5330-XXPXXB01,3810-XXSXWGW01,3223-XXRXXBLX1,5330-XXPXXB02,3210-XXPXXBSX1,3100-XXSGXBXXXT1,3132-XXMGXBK00X2,3132-XXMGXBK00X1,3130-XXMGXBD00X1,3212-XXRXXBLX1,3100-XXSXXB106X1,3110A-XXSGXBD00A1,G5210-XXDX02,5222-XXYPXXBX01,3132-XXMGXBD00X1,3223-XXMXXBXA1,3110-XXMGXBD00T1,3121-XXXXXBK00TX,3132-XXMGXBD00X2,3150-XXMGXBD00T2,3125-XXXGXBK00T1,3125-XXAGXBK00T1,3150-XXMGXBD00T1,3130-XXMGXBD00X2,3132-XXSGXBK00T1,3210-TPSN01,3100-XXMXXB112X1,3240-XXSXXBXA1,5310-XXBSXXXX,3124A-XXRGXBK00T1,5260-XXBPXXBNX1,3125-XXSGXBD00T1,3820-XXSXWGX01,5223-XXYPSXBX01,5243-XXYPSXBX01,K127-005-0XXGX01,3140-XXRGXBK00T1,3114-XXXXXBK00T1,3100-XXSXXB096X1,3820-XXSXNGX01,3212-XXXXXBXX1,3123-XXAGXBK00T1,3131-XXSGXBD00T1,3241-XXSXXBXA2,3123-XXSGXBD00T1,3100-XXMXXB161X1,3121-TPSN01,G5210-XXDX01,3100-XXMXXB146X1,3220-HXXB01,3131A-XXRGXBK00T1,3241-XXSXXBXTX,5214-XXDBSXBW01,3136-XXMGXBK00TX,3210-XXMXXBXA1,3131-XXXXXBK00TX,3210-XXMXXBXA2,3212-XXRXXBSX1,5260-XXBPSXBNA1,3124A-XXXX
扁平电缆（FFC）为电气架构带来新的发展空间
扁平电缆已经成为在特定情况下进行电源和信号连接的关键选择。柔性扁平电缆和柔性印刷电路是主要的两种类型，它们在尺寸、重量、散热和自动化方面都展现出了独特的优势。为了充分利用这些优势，需要新的制造技术、组件和连接系统，并且开发它们将开启设计灵活性的新境界。
应用方案 发布时间 : 2024-07-19
电子商城
服务
配备E5071C网络分析仪及软件工具，支持20 GHz 的带宽和 22.3ps上升时间，进行眼图测试、时域测量，通过时域反射给用户完成电缆、连接器、高速 PCB 走线和高速封装的设计与查错工作。支持到场/视频直播测试，资深专家全程指导。
实验室地址： 深圳 提交需求>
可定制插座连接器的间距1.25mm~2.54mm；列数：单列/双列/三列/四列；端子类型：直焊针、直角焊针、表面贴装式、无焊柔性针压接、绕接、载体.；镀层、车针长度/直径、连接针长度等参数可按需定制。
最小起订量： 1 提交需求>
授权代理品牌：集成电路
授权代理品牌：分立元件
授权代理品牌：接插件及结构件
授权代理品牌：部件、组件及配件
授权代理品牌：电源及模块
授权代理品牌：电子材料
授权代理品牌：仪器仪表及测试配组件
授权代理品牌：电工工具及材料
授权代理品牌：机械电子元件
授权代理品牌：加工与定制
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