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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硕凯电子（Socay）贴片磁珠选型指南

Chip Ferrite Bead

硕凯电子 - 片状铁素体磁珠,大电流片式铁氧体磁珠,HIGH CURRENT CHIP FERRITE BEAD,CHIP INDUCTOR,片式电感,CHIP BEAD,CHIP FERRITE BEAD,贴片磁珠,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,TV,汽车,NAVIGATOR SYSTEMS,LAPTOP,INFORMATION TECHNOLOGY EQUIPMENT,AUTOMOTIVE,掌上电脑,WIRELESS COMMUNICATION,TVS,AUDIO EQUIPMENT,蜂窝设备,WIRELESS COMMUNICATION DEVICES,音响设备,打印机,CELLULAR PHONES,无线通信设备,TVS,COMPUTER PERIPHERALS,KEYLESS REMOTE SYSTEM,PAGERS,CELLULAR EQUIPMENT,HIGH CURRENT DC POWER LINES,导航系统,VISUAL EQUIPMENT,视觉设备,DIGITAL TV,COMPUTERS,VCR,数字化视频光盘,LCD MONITOR,PDA系统,PDA,AUDIO EQUIPMENT,TELECOMMUNICATIONS,COMPUTER,无钥匙遥控系统,电脑外设,RF COMMUNICATION,液晶显示器,数字电视,手提电话,DIGITAL CAMERAS,PRINTERS,PDAS,VCRS,传呼机,MP3,电脑,DVD,NAVIGATOR SYSTEM,AUTOMOTIVE ELECTRONICS,RADAR DETECTORS,PORTABLE TELEPHONES,数码相机,计算机

2019/3/14 - 选型指南代理服务技术支持采购服务

硕凯电子（Socay）贴片电感选型指南

SCFL Series Chip Inductor SCML Series Chip Inductor SCWL201610 Series Chip Inductor SCWL252010 Series Chip Inductor SCWL252012 Series Chip Inductor SCWL252010XXXXQ Series Chip Inductor SCWL252012XXXXQ Series Chip Inductor

硕凯电子 - CHIP FERRITE INDUCTOR,片式铁氧体电感器,WIRE-WOUND TYPE POWER INDUCTOR,CHIP INDUCTOR,绕线式功率电感,片式电感,CHIP BEAD,贴片磁珠,SCWL2520122R2MTF,SCFL20121R5KPF,SCWL201610,SCWL,SCFL1608R12KPF,SCFL32162R2KTF,SCFL2012,SCFL16083R9KPF,SCWL252010R47MTF,SCHB1005G,SCFL3216R68KTF,SCML2520 1R5MTF,SCFL20121R8KPF,SCFL3216R22KTF,SCFL1608R82KPF,SCML2520 2R2MTF,SCFL16081R0KPF,SCWL252010R47YTFQ,SCWL252012R47YTFQ,SCFL20121R2KPF,SCFL3216,SCFL32161R2KTF,SCFL201212RKTF,SCFL20123R3KPF,SCFL,SCFL3216R39KTF,SCFL16081R8KPF,SCWL2520104R7MTFQ,SCFL1608R33KPF,SCFL1608R56KPF,SCFL321618RKTF,SCFL2012R12KPF,SCFL3216R56KTF,SCGB-S,SCGB-W,SCFL2012R68KPF,SCWL201610R24MTF,SCFL16081R5KPF,SCWL201610R47MTF,SCWL2520101R5YTFQ,SCFL1608R27KPF,SCWL2520102R2MTFQ,SCFL32161R5KTF,SCFL16083R3KPF,SCFL16084R7KPF,SCFL20123R9KPF,SCGB-H,SCFL201215RKTF,SCML2012 4R7MTF,SCFL16081R2KPF,SCFL32161R0KTF,SCFL32162R7KTF,SCFL3216R82KTF,SCFL20121R0KPF,SCFL2012R82KPF,SCML2016 4R7MTF,SCFL1608R47KPF,SCFL201210RKTF,SCML2520 3R3MTF,SCFL32161R8KTF,SCFL20122R2KPF,SCWL252012R68MTF,SCFL160810RKPF,SCFL1608R22KPF,SCFL20126R8KTF,SCWL252012R68YTFQ,SCFL32168R2KTF,SCFL201218RKTF,SCFL2012R10KPF,SCWL201610R68MTF,SCWL2520101R0YTFQ,SCFL32163R9KTF,SCFL321622RKTF,SCFL3216R12KTF,SCWL252010XXXXQ,SCFL2012R47KPF,SCFL20125R6KTF,SCFL2012R27KPF,SCFL1608R68KPF,SCWL2016102R2MTF,SCWL2520121R0YTFQ,SCFL1608R39KPF,SCML2520 4R7MTF,SCFL16082R2KPF,SCFL2012R15KPF,SCFL16082R7KPF,SCFL20122R7KPF,SCWL2520121R0MTF,SCFL3216R15KTF,SCFL3216R18KTF,SCFL32163R3KTF,SCFL2012R56KPF,SCFL2012R18KPF,SCFL2012R39KPF,SCFL321612RKTF,SCFL201222RKTF,SCFL1608R10KPF,SCWL2520122R2MTFQ,SCML,SCML2520 1R0MTF,SCFL2012R22KPF,SCWL252010R68MTF,SCFL3216R33KTF,SCWL2520124R7MTFQ,SCFL3216R10KTF,SCWL2520121R5YTFQ,SCFL20128R2KTF,SCFL1608R18KPF,SCWL2520102R2MTF,SCFL321610RKTF,SCFL3216R47KTF,SCGB1005-B,SCFL32166R8KTF,SCWL252012XXXXQ,SCWL2520101R0MTF,SCML2016 2R2MTF,SCWL252010,SCFL321615RKTF,SCWL252012,SCFL32164R7KTF,SCML2012 2R2MTF,SCFL1608R15KPF,SCFL2012R33KPF,SCWL252010R68YTFQ,SCWL252012R47MTF,SCPB-W,SCFL32165R6KTF,SCFL3216R27KTF,SCWL2016101R0MTF,SCFL20124R7KPF,SCFL1608,SCPB-S,智能电话,汽车,PADS,THIN-TYPE POWER SUPPLY MODULE,MOBILE PHONES,DC/DC变换器,MOBILE PHONES,无线通讯,HDDS,RF AND WIRELESS COMMUNICATION,SMART PHONE,DC/DC CONVERTER,AUTOMOTIVE,RADAR DETECTORS,WIRELESS COMMUNICATION,硬盘驱动器,COMPUTER,INFORMATION TECHNOLOGY EQUIPMENT,RF COMMUNICATION,液晶显示器,无线通信,雷达探测器,LED DISPLAY,TELECOMMUNICATIONS,垫,LCD,移动电话,PAD,SMART PHONE,信息技术设备,射频通信,薄型电源模块,LED显示,DSCS

2019/3/14 - 选型指南代理服务技术支持采购服务

基于硕凯MLV、磁珠产品的头戴式蓝牙耳机静电问题整改案例分析

本文介绍头戴式蓝牙耳机京东测试问题整改分析。Type-C位置的磁珠拿掉换成0Ω电阻。产品Type-C接口位置的ESD换成硕凯的MLV（信号部分型号是SV0402E5R5G1B、电源部分型号是SV0402E9R0G0B），将音频信号位置ESD换成硕凯MLV。

2024-10-25 - 设计经验代理服务技术支持采购服务

【产品】国产贴片磁珠SCGB1005S601EPF，用于信号线或小电流电源线抑制高频噪声和尖峰干扰

硕凯电子推出的SCGB1005S601EPF是一款小封装表面贴装式器件，此型号专用于信号线或小电流电源线上抑制高频噪声和尖峰干扰。

2021-12-11 - 新产品代理服务技术支持采购服务

硕凯即将亮相2024香港春季电子展，助力开拓海外市场

由香港贸易发展局主办的香港春季电子产品展将于2024年4月13-16日在香港会议展览中心举行，硕凯邀您一起参加本次电子行业盛会，我们的展位号5B-B05。硕凯主营产品有GDT陶瓷气体放电管、TVS瞬态抑制二极管、ESD静电保护元件、TSS半导体放电管、MOV压敏电阻、MLV贴片压敏、PPTC自恢复保险丝、SPG玻璃放电管、NTC热敏电阻、BEAD磁珠、SBD肖特基二极管等。

2024-04-12 - 原厂动态代理服务技术支持采购服务

理疗床项目上寻一款磁珠，1206，典型阻抗600Ω，额定电流至少2A，求推荐。

推荐硕凯电子磁珠SCPB3216S601PTF，1206封装，典型阻抗600Ω±25%@100MHz，额定电流2.5A，最大直流电阻0.2Ω，相关规格书参考链接：https://www.sekorm.com/doc/2301454.html。

2023-04-21 - 技术问答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

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。

硕凯电子 - 片状铁素体磁珠,CHIP FERRITE BEAD,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,大电流直流电源线,无稳定接地的电路,CIRCUITS WHERE A STABLE GROUND IN UNAVAILABLE,HIGH CURRENT DC POWER LINES

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