蓝牙智能开关静电问题整改案例分析

时间： 2024-10-25 来源：硕凯电子

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一、问题描述

蓝牙智能开关需过静电测试，这个开关产品在静电测试过程中极易损坏蓝牙模块，现在就是要找到问题点，解决蓝牙模块损坏问题。

二、测试要求

静电：空气测试17kV，测试次数±15次，选取任意一点都不损坏蓝牙模块。

三、整改过程

蓝牙模块电路如下，由于模块会损坏，所以就先全部加上保护器件，要是没问题那在一个一个的去掉，这样就不会消耗太多的蓝牙模块。

1、全部加上保护器件

没加保护器件前空气测试静电5kV,就有一部分模块损坏，加上保护器件后可以测试到9kV有些模块会损坏。但是这远远达不到17kV，所以还需要加强保护。

加保护器件前电路图

加上保护器件电路图

2、进一步加强抗静电能力

部分线加上磁珠，3.3V电源线换成单向大电流ESD。经过这样处理，抗静电能力进一步加强，现在能达到12kV。如下图：

3、其他部位保护

蓝牙模块这里保护器件已经加得很到位了，就在其他部位进行分析，因为有时候需要板子每部分都需要加强，可能是其他部位的抗静电能力不强导致整体抗静电能力提不上去。后面在其他电源管理部分进行保护，然而经过保护也没太大提升。

4、地处理

转换思路，再对板子地进行处理，尽量将板子的地连成完整的一块，最终空气测试达到17kV。如下图；

四、总结案例

1、蓝牙模块极易损坏，如果一步一步加强保护，那么会有很多蓝牙模块损坏，为了减少损坏，就一开始能加器件的线路都加上保护器件，等通过测试再一个一个的去掉。

2、因为是蓝牙模块损坏，所以先加强的部位是蓝牙模块。

3、在主要部位加强保护后，如果再增加保护起不到作用时，要考虑其他部位是否影响到了，避免短板效应。

4、除了电路上保护外，还有就是板子的地，地非常重要，板子的地越完整也好。

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本文由ll转载自硕凯电子，原文标题为:智能开关整改案例，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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硕凯电子（Socay）贴片磁珠选型指南

目录- Chip Ferrite Bead

型号- SCGB1005S100FPF,SCWL201610,SCGB3216S500KTF,SCPB1005S100NPF,SCHB1005G182,SCPB3225S102NTF,SCPB3216S601PTF,SCGB1608H800HPF,SCGB1608S181FPF,SCGB3216-S,SCGB2012W102EPF,SCGB3216-W,SCPB2012S331NPF,SCGB2012H221EPF,SCGB1608W471HPF,SCGB2012S601HPF,SCPB1608S221NPF,SCPB3225S600MTF,SCGB1005W121HPF,SCPB3216W601MTF,SCGB1005S300FPF,SCHB2012W221EBPF,SCGB1005W182EPFB,SCPB1068W121NPF,SCGB1608S600IPF,SCHB1005-W,SCPB1005-W,SCGB3216S601HTF,SCHB1005G601,SCGB2012S300KPF,SCPB1005S300NPF,SCPB4516S600WTF,SCPB4516W600WTF,SCPB1608,SCHB1608-W,SCGB1608S301FPF,SCPB1608S600QPF,SCGB4532S700KTF,SCPB4516-W,SCPB1608S301NPF,SCPB3216W500QTF,SCPB1068W600LPF,SCGB1608W601HPF,SCGB2012S121KPF,SCGB1608W102GPF,SCPB2012S301NPF,SCPB4532S132QTF,SCGB3216S102HTF,SCGB1005S471EPF,SCGB3216S202ETF,SCPB4532S121WTF,SCGB1005S700FPF,SCPB3216,SCGB1608H200HPF,SCGB1608H301EPF,SCGB4532S121KTF,SCWL252010XXXXQ,SCPB1068W471LPF,SCPB2012W310QPF,SCGB1608S102CPF,SCGB3225S900KTF,SCGB1608H121EPF,SCGB2012S202EPF,SCPB2012S600QPF,SCPB1068-W,SCPB2012,SCPB3225,SCHB2012W222EBPF,SCHB1608W601EPF,SCHB1005G182EPF,SCPB1608S471LPF,SCPB3216S122LTF,SCGB1005W102EPFB,SCHB2012-W,SCGB1005-W,SCPB2012S800UPF,SCGB1005-S,SCHB2012W601EBPF,SCPB2012W221NPF,SCPB2012-W,SCGB1005-H,SCPB3216S300WTF,SCGB1608H750HPF,SCGB1608S221FPF,SCGB1005-B,SCGB1005S601EPF,SCGB1608S800IPF,SCGB2012H301EPF,SCPB1608S601LPF,SCPB1005W100LPF,SCGB2012S400KPF,SCPB4532S601QTF,SCHB2012W121EBPF,SCWL252010,SCWL252012,SCGB1005S200FPF,SCGB1608W121HPF,SCPB4516S851MTF,SCGB1005B152DPF,SCPB2012W331MPF,SCPB-W,SCGB1005B102EPF,SCPB-S,SCPB3216-W,SCHB1005G102,SCPB3216S800RTF,SCPB1608S300QPF,SCGB2012S600KPF,SCPB2012S221QPF,SCPB1005S600LPF,SCGB1005W601EPFB,SCHB1005G,SCGB4532-S,SCGB2012H601EPF,SCGB1005S102EPF,SCGB1608W182APF,SCGB1608H102EPF,SCPB1068W181MPF,SCPB2012S121UPF,SCGB4516S800KTF,SCHB1608W121EPF,SCPB4516,SCGB1005H750FPF,SCGB2012W151EPF,SCFL,SCGB1608S300IPF,SCGB1608W221HPF,SCGB1005S400FPF,SCGB2012-W,SCGB-S,SCGB1608S100IPF,SCGB3216S122HTF,SCGB1608S471FPF,SCGB2012-S,SCGB2012H121EPF,SCGB-W,SCPB1068W301MPF,SCGB2012-H,SCGB2012S221HPF,SCGB1608W222APF,SCGB2012S800KPF,SCGB-H,SCPB1068W221MPF,SCGB1608-W,SCPB4532,SCPB2012S310WPF,SCGB1608-H,SCPB1068W300LPF,SCPB2012S400RPF,SCGB1608-S,SCGB1608S601EPF,SCHB1608W102CPF,SCGB3225-S,SCPB1608S121PPF,SCPB3216S500WTF,SCGB1005W241FPF,SCGB1608S121IPF,SCPB3216W121QTF,SCGB1608W252APF,SCPB1005S121MPF,SCPB2012S601NPF,SCGB2012W221EPF,SCGB1005S301EPF,SCGB2012W121EPF,SCPB1608S451MPF,SCGB4532S800KTF,SCHB1608W750HPF,SCGB3216S310KTF,SCGB1005S241EPF,SCGB2012S301HPF,SCHB1005G601FPF,SCPB3216S121WTF,SCGB1005W102EPF,SCGB1005S600FPF,SCGB2012W601EPF,SCML,SCGB3225S600KTF,SCGB4516-S,SCHB1608W241EPF,SCPB1005,SCGB3216W601ETF,SCGB1005S121FPF,SCGB1608H601EPF,SCHB1005G102YPF,SCGB3216S121ITF,SCGB3216S700KTF,SCWL252012XXXXQ,SCGB2012S102FPF,SCHB2012W151EBPF,SCGB4516S151KTF,SCPB1608S800QPF,SCGB1005B601FPF,SCGB3216S152ETF,SCPB2012W600QPF,SCHB1005W750FPF

2019/3/14 - 硕凯电子 - 选型指南代理服务技术支持采购服务

用于大电流的SCPB-S系列片式铁氧体磁珠

描述- 该资料介绍了SOCAY公司生产的SCPB-S系列高电流磁珠的特性、电气参数和应用领域。这些磁珠结合了高频噪声抑制和高电流处理能力，适用于高压直流电源线和稳定接地不可用的电路。

型号- SCPB3216S500QTF,SCPB4532S121WTF,SCPB1005S121MPF,SCPB2012S800UPF,SCPB2012S601NPF,SCPB3216S800RTF,SCPB1608S300QPF,SCPB2012S221QPF,SCPB1005S100NPF,SCPB1005S300NPF,SCPB1005 SERIES,SCPB1005S600LPF,SCPB4516S600WTF,SCPB3225S102NTF,SCPB3216S601PTF,SCPB4516 SERIES,SCPB3216S300WTF,SCPB2012 SERIES,SCPB1608S600QPF,SCPB1608S451MPF,SCPB2012S600QPF,SCPB1608 SERIES,SCPB2012S300QPF,SCPB1608S601LPF,SCPB2012S121UPF,SCPB2012S331NPF,SCPB1608S301NPF,SCPB2012S310WPF,SCPB4532S601QTF,SCPB2012S400RPF,SCPB3216S121QTF,SCPB1608S800QPF,SCPB3225 SERIES,SCPB3216 SERIES,SCPB1608S221NPF,SCPB3216S121WTF,SCPB3225S600MTF,SCPB1608S471LPF,SCPB4516S851MTF,SCPB3216S122LTF,SCPB4532 SERIES,SCPB-S SERIES,SCPB2012S301NPF,SCPB4532S132QTF,SCPB1608S121PPF,SCPB3216S500WTF

September 2, 2020 - 硕凯电子 - 数据手册 - Revision September 2, 2020 代理服务技术支持采购服务