蓝牙智能开关静电问题整改案例分析
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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型号- 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
硕凯电子(Socay)贴片磁珠选型指南
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
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。
原厂动态 发布时间 : 2024-04-12
【经验】解析贴片磁珠选型及应用
磁珠用来吸收超高频信号,像一些RF电路,PLL,振荡电路,含超高频存储器电路(DDR SDRAM,RAMBUS等)都需要在电源输入部分加磁珠。本文硕凯电子将介绍贴片磁珠的选型技巧及其应用。
设计经验 发布时间 : 2022-04-03
【产品】1000Ω的贴片磁珠SCGB1608H102EPF,助力国产化智能割草机
硕凯电子(SOCAY)推出的SCGB1608H102EPF是一款贴片磁珠,具有显著的阻抗特性,能达到1000Ω,有效工作在100MHz频率范围内,直流电阻最大仅0.6Ω。
新产品 发布时间 : 2020-10-25
硕凯电子将携ESD静电抑制器、自恢复保险丝等参加2023亚洲智能穿戴展,现场提供防护方案讲解
亚洲智能穿戴展立足现代化国际都市群粤港澳大湾区,是全球影响最为广泛的智能穿戴、蓝牙音频技术展会之一,也是亚洲屈指可数的智能穿戴行业技术产业盛会。硕凯股份作为中国优秀半导体领军企业,受邀参加2023(春季)亚洲智能穿戴展,硕凯亦邀请您共聚此次展会。硕凯将带来自主研发的产品并推荐防护方案。
原厂动态 发布时间 : 2023-03-11
SCPB-S Series Chip Ferrite Bead for High Current
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
【产品】国产贴片磁珠SCGB1005S301EPF,可用于抑制信号线、电源线上的高频干扰和尖峰干扰
硕凯电子(SOCAY)推出的SCGB1005S301EPF是一款贴片磁珠,具有很高的电阻率和磁导率,等效于电阻和电感串联,它的阻抗在100MHz频率测试条件下能达到300Ω,直流电阻最大仅为0.8Ω。
新产品 发布时间 : 2021-01-28
SMCF Chip Chip Common Mode Filter/Bead(CTI)Test Report(A2220549231101001)
型号- SWCF,SCWL,SCPB,SCPB SERIES,STCFE,SCML,SMCF,SCGB
电子商城
品牌:硕凯电子
品类:Chip Ferrite Bead for High Current
价格:¥0.0375
现货: 56,057
现货市场
服务
测试1.2/50us-8/20us组合波,10/700us-5/320us组合波,8/20us单波。能够模拟雷电瞬变引起的浪涌冲击抗干扰测试,最高电压达20KV,电流达20KA。点击预约,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/上海 提交需求>
测试等级:空气放电30KV±5%;接触放电30KV±5%,适用标准:GB/T 17626.2、IEC61000-4-2、ISO10605、GB/T 19951;给用户产品出电路保护设计方案建议及整改。点击预约,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/上海 提交需求>
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