【经验】抗浪涌和抗脉冲应用设计中的电阻该怎么选?
电阻是电路设计中最常用的器件,但在某些特殊应用需要正确评估和选型,不然就会造成产品在批量生产使用过程失效率提高,比如在抗浪涌和抗脉冲应用设计中。本文将结合光颉科技(Viking)的SWR和PWR系列电阻分析抗浪涌和抗脉冲应用设计中的电阻该怎么选?
首先需要了解浪涌和脉冲之间的区别,如图1所示,浪涌是指电压或电流瞬间超出正常值,这种浪涌是随机的、不会周期出现,强调突然而剧烈,一般用峰值来表示。脉冲是指有规律的周期型号,和浪涌最主要的区别在于能量是周期性的且能量一般较小。
图1 浪涌和脉冲波形对比示意图
接下来针对抗浪涌电阻的选型,除了评估封装、阻值、精度、功率的参数外,还有一项就是最大额定电压和最大过载电压,通常是最大操作电压的2倍,参照IEC60115为电阻测试标准,其中对雷击浪涌测试条件为10/700us和1.2/50us的电压波,按照标准,电阻在遇到浪涌信号时,电阻值变化不超过相应阻值的1%时,视为符合抗雷击浪涌测试。以光颉科技(Viking)的SWR系列抗浪涌电阻为例,如图2所示,可以看出SWR系列不同封装电阻在通过1.2/50us浪涌峰值电压时电阻变化值,参考0805封装(绿色)在通过200V浪涌时电阻变化量为100Ω,那么按照IEC60115要求,串联保护器件内阻应该大于10KΩ,这样在实际应用中,才能通过雷击浪涌测试。
图2 SWR系列电阻在1.2/50us浪涌峰值电压时电阻变化曲线图
了解上面抗浪涌电阻,抗脉冲电阻就相对简单了,如图3是光颉科技(Viking)的PWR系列抗脉冲电阻(100Ω)在连续脉冲下能够承受的最大功率值。以0805封装为例,能够承受1.8W脉冲能量时间1.8s,能够承受4W脉冲能量时间是0.1s。抗脉冲电阻和普通厚膜电阻板材不一样,抗脉冲电阻采用高的是氧化铝基板,散热较快,而普通厚膜采用的是陶瓷基板。
图3 PWR系列抗脉冲电阻在连续脉冲下最大功率与时间曲线图
从应用上来看,抗脉冲电阻可以承受周期性脉冲信号,因此抗脉冲电阻可以用于一些交流供电电路中,如交流伺服和步进电机系统中,使用抗脉冲电阻可以有效防止持续脉冲电压损坏后续电压敏感器件;而抗浪涌电阻主要承受单次大能量的浪涌信号,可以搭配防浪涌器件在防雷等应用中。
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【产品】抗浪涌抗脉冲高功率贴片电阻器SWR系列,额定功率最高可达1.5W
SWR系列是光颉科技(Viking)推出的具有出色的抗浪涌能力和抗脉冲性能贴片电阻器,额定功率最高可达1.5W。该系列浪涌电阻器采用SMD封装,共有SWR03 、SWR05 、SWR06 、SWR13 、SWR10 、SWR12 六种系列。可提高工作电压额定值,符合AEC-Q200标准。可应用于计量(测试/测量),医疗设备,汽车,电源,充电器,逆变器,液晶视频监视器领域。
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型号- CSM06FTEUR100□,HVR03FTEX1003,LR12□T□0M50,TAR03ATCM1001,PAM03BTCX1001N,WMB,TCS12FTE□R050□,AR,AS,ART05,ART06,WMK,CN41,ARW62,CSRW0410,WMP,WMK12FTERR001K,CR..AC,ART03,WMR,CR..AC SERIES,ART02,ARF02BTCN0500N,MOF0623FAGU1001MA,SWR05,CSRH SERIES,MOF1765,SWR02,SWR03,LRJ SERIES,CFR,SWR06,CFS,CRP06,WMK SERIES,MOF0623,MFR1550,FA TYPE,TAR SERIES,LRP12FTDSR015A,FMR1550,TCS12,TCS10,CR..A SERIES,CNF..A SERIES,CS SERIES,CR..A,LR12□T□0M75,FMR,ARN06CTCS1000N,CSRP SERIES,CS,MA TYPE,CRP12,TCS06,LR12□T□1M50,TCS05,CFR0318,TR35JDD1001,TCS03,WMB12FTDSR050K,TCS02,CFS SERIES,CS06FTFUR100A,CSRH0309,CSRA0207,TR100JDD1001,ARP SERIES,CSRV0204DTDV1000,STR35,ASG12,ASG10,CSRA0204,TR50JDD1001,TR50-RF,AS03FTE1002A,CSRP0204DTDV1004,ART..A SERIES,CRG03FA7---10R,ASG0A,ARM..A SERIES,ASG05,ASG06,ASG03,MOF1550,LR12□TES□□□□,4T10,ARG03FTC1001N,ASG02,ARP06BTC□1001N,ARW25,CRG..A SERIES,MFR1145,CRW..A,FA,HVR..A SERIES,FB,FC,4T06,FD,ARW20,ARHV..A SERIES,LRSW1050FTWRR005KA,HVR SERIES,PR03DTDX1000N,CFR1550,MGQ1550,STR35JDD1001,CN..A SERIES,LRP12FTDSR015,CSRA0102,AS43JTF□1002,CN-41,WMB SERIES,LRJ03,LRJ02,ARHV05,ARHV06,LRJ05,LRJ06,CSRW0207,CSRW0309,AR03TTBX1001□,LRA1066,LR SERIES,LRP..A,LRJ12,TFAN SERIES,ARHV13,MOF0932,TAR05,CN-42,TAR06,CN-43,LRJ10,TAR03,TAR02,ARG05,ARG02,ARG03,HVR,ARG06,CRTC06FTCV1002A,MFD0727BBCV1001,FMR SERIES,LR12□TD□□□□,ARW62BTCT1001A,MF06JTEUR005,HVRC SERIES,RT-10,WMR SERIES,RT-12,CSRW SERIES,WMP SERIES,CPR12FL4----1K,CR-03FA7---10R,CSW62,CN-21,CRW SERIES,TR50-RF..A SERIES,CNF,CRG SERIES,CFR1145,ARF05,ARF06,FB TYPE,ARF03,HVR..A,TR35,CN-43JA7---10R,CSRW0207JTGV0100,ARF01,ARF02,RS SERIES,LR12□T□R005,LR12□T□R006,CRW62,LR12□T□R003,LR12□T□R004,LR12□T□R007,ARM..A,CRG03FL7---10R,CSMW62,LR12□T□R001,MF10,LR12□T□R002,MF12,PWR12JTEA1001A,MFR0623,TR50JDD1001-H,MF03,MF05,MF06,TR30,LR12□T□R010,MF02,SRV0102,FMR1145,LRSW1050,ARHV13BTC□1213A,RS-10,RS-12,MOF1145,LR,CNF22FTFY1002,MFR0318,CN..A..,FD TYPE,MA,MC,MF,AS43JTF1000A,HVRC12,LR12□TE□□□□,ARTP..A SERIES,HMR SERIES,CSRH0207,MFR SERIES,MOF2485,CNF..A,AS06,RS-03,MOF SERIES,RS-02,CSRF0204FTDV1000,LRP SERIES,AS05,CSW25FTEUR100□,SWR13,AS02,AS03,AS01,CN41JL6---1K,MFD1040,PWR SERIES,HVRC0A,CSW20,RS-0A,SWR12,LR12□TW□□□□,CRTC..A SERIES,SWR10,RS-05,CRG,HVRC06,RS-06,CSW25,TR50,CRP,PR SERIES,RT-03,RT-02,HVRC06FTEO1004,FIR05,CSRP0207,CRW,RT SERIES,MFD,CSRP0204,AS12,AS10,CRW20,AS SERIES,ASG06FTEV1002,RT-0A,TFAN43B0TC0Y1001N,MFR,RT-05,RT-06,AR03ATC□1001A,CSM,AS0A,CRW25,CSN,CRW25FC7---10R,CN..A,CSW,AR05,AR06,SWR SERIES,AR03,AR04,AR01,CS06FTGUR100□,MGQ1145,ARW..A,AR02,CSW SERIES,AS21,MGQ,CSW08,MF06JTEUR005A,CRG10,PR,RAM13,LR12,PWR..A,CSMW,CRW08,ASG..A SERIES,4T10FTFQR010N,HVR0A,AR12,AR13,AR10,CRG12,FMR0623BTNV1001□,FIR SERIES,WR27JTER1001,HVR06,MF..A,CSRF0102,HVR05,HVR02,HVR03,PWR10,PWR12,PWR13,CRW..A SERIES,CRG0A,QR,RAM05,RAM02,RAM03,RAM06,LR12□TKS□□□□,AS42,AS43,AS41,ARF,ARG,TFAN,HVR12,ARN,RAM12,ARP,CR..A..,RAM10,RS,TCS SERIES,RT,MFD SERIES,LRA0340,CRTC..A,MFD0727,ASG,QR300WR5000JB,LR12□T□6M50,CSRF0204,WMP12FTDRR003F,LR12□TDS□□□□,CSRF0207,ARW..A SERIES,CRP SERIES,RT-03NL7---1R2,CRG06,CS06,CS05,CSM SERIES,CRG05,MGQ0932,CS03,CRG02,CS02,CRG03,CS01,SWR,CRG01,TR100,LRSW1575,CSRA,ARN SERIES,MFR0318BTNW1001□,ARM02,ARM03,HMR05JL7---200M,SWR12JTEA1001□,CS13,CS12,CS10,ARM06FTC□1001A,4T,MGQ0623JA4V1004,ARN12,TR50-RF..A,ARTP03,ARTP05,HMR05,CSMW08,HMR06,CSMW SERIES,CSRW,CSRV,MF SERIES,CS25,CSRP,ARF SERIES,CFR0318JT-W1001MA,AS..A,ASG SERIES,ARN05,CSRH,ARN06,CFR0932,KNQ0932JAGU1000,ARN03,ARTP02,CSRF,LR12□TDR□□□□,TR50JDD1001-RF,CSRF SERIES,PWR12JTEA1001□,CSRH0207FTEU1003,AR SERIES,CSRA SERIES,ART..A,CS37,MFR0932,AS..A SERIES,CSMW20,LRSW..A,LR12□TER□□□□,LR12□TKR□□□□,WR,MC TYPE,PWR05,LR12□TWR□□□□,PWR06,MOF,TR50-H,CSRV SERIES,LR12□TK□□□□,SWR..A SERIES,LRA0766,CSMW36,ARM06,LRSW..A SERIES,ARM05,CS..A SERIES,PWR02,PWR03,HVR03FTEX1003A,AR..A,CN.A..,WMP17,WMP27,LR12□TWS□□□□,MGQ1760,CSRV0102,CNF22FTFY1000A,PWR,CSN SERIES,CNF42,CNF43,CRG..A,AR..A SERIES,CS62,WMP12,RAM SERIES,TR30JDD1001,LRP..A SERIES,ARP06,FMR0623,LRP06,CSM02,FIR05KTF□0020,ART03FTC□1001A,KNQ,CS75,LRSW0630,CSN13,LRP05,RS-03FL7-0R047,CRTC06,CSRA0204DTDV1000,CRTC05,CRTC03,CRTC02,KNQ SERIES,ARTP05FTC□1001A,CFS0204GT-V1000,LRA..A SERIES,CR-03FL7---10RAC,CSM12,CSRV0204,CSM10,WMR28,ASG06FTEX1022A,CSRV0207,WMR27,CNF22,LRA..A,CSM06,CSM05,CSM03,LRP10,LRP12,TAR,PR10,LRJ,CFS0207,PR12,CRW25FL4---10R,TR50JDD1001-RFA,CFS0204,LRP,TFAN43,ASG..A,WMR25,HVRC,MGQ SERIES,PR03,LRJ\LRA..A,PR02,ARHV..A,PR05,LR12JTESR002□,CSN12,CSN10,WMR06,PR06,CSN06,WMR12,CSN05,WMR10,CFR SERIES,AS03FTE□1003,MF..A SERIES,CFS0309,SWR..A,TCS,CS..A,CR-01,MGQ0623,LR12□T□2M50,ARTP..A,CSMW36FTDUR100□,LRA0340FTEDR001MIA,CSN06FTFVR100,CFR0623,4T SERIES,FMR0932,LRJ10-T-□R0R0,CR-12,PWR..A SERIES,CR-10,HMR,SWR12JTEA1001A,FIR,FC TYPE,ARG SERIES,CR-06,CN21,CR-05,CR-02,CR-03,CRW..A..,CR-0A,WMR12FTDRR005K,RAM
THICK FILM CHIP RESISTOR (SGS) 測試報告 (CR(AC)/CN/RT/AS/HVR/PWR/SWR/HMR/CR..A/AS..A/CN..A/HVRC/CRW/CNF/CNF..A/CRTC..A/PWR..A/SWR..A/HVR..A/CTHICK FILM CHIP RESISTOR (SGS) Test Report) (EKR24301533)
型号- SWR..A,RT,CN..A,HVR..A,CR..A,HVR,PWR..A,CNF..A,CRW,PWR,CN,HMR,CRTC..A,CRAC,CR,SWR,AS,AS..A,CRW..A,CNF,HVRC
Viking Company profile
型号- CSRA,LRJ,LRP,CS13,CS12,CSM..A,CS10,TAR SERIES,FMR SERIES,CRW..A SERIES,4T,KNP SERIES,HMR SERIES,CSR SERIES,MOF SERIES,4T10,LRP SERIES,CS1206,CSRV,MF SERIES,PWR SERIES,AS41,CFR SERIES,AR..A SERIES,CRG SERIES,TR SERIES,4T06,HVR SERIES,PR SERIES,CSRF SERIES,LRP06,MFD SERIES,CSRA SERIES,AR SERIES,MFD,KNP,RS SERIES,CFR,CRP06,LRJ02,AS SERIES,MFR,MF10,CSM,CRW25,CR SERIES,CS SERIES,LRJ06,4T SERIES,LRS SERIES,CSR,MOF,CRP SERIES,SWR SERIES,CS06,CSRV SERIES,CS05,FMR,CSRP SERIES,CSM SERIES,CS03,CS02,LR SERIES,FR SERIES,AS21,ARG SERIES,CRP12,CSM06,CSM05,LRJ10,MF03,MF05,MF06,LRP12
光颉科技(Viking)SWR/PWR系列功能性电阻介绍
描述- 光颉的功能性电阻,可以起到脉冲保护,抗浪涌特性,可以吸收有害浪涌噪声,从而起到抗浪涌,静电保护,保护其它组件,降低产品故障率。 使用的产品广泛:电源供应 通讯 测试仪器 仪表 医疗相关 汽车 照明等。
型号- PWR,SWR
Automotive Grade Surge Withstanding Chip Resistor – SWR..A Series Data Sheet
型号- SWR..A SERIES,SWR..A,SWR12,SWR10,SWR05,SWR SERIES,SWR02,SWR13,SWR03,SWR05JTEV1001A,SWR06,SWR
Surge Withstanding Chip Resistor - SWR Series Data Sheet
型号- SWR12,SWR10,SWR SERIES,SWR05,SWR02,SWR13,SWR03,SWR05JTEV1001□,SWR06,SWR
CR/CN/RS/RT/AS/HVR/PWR/SWR/CS/HMR/CR..A/AS..A/CS..A/CN..A/TR CHIP Test Report
型号- RS,RT,CN..A,CR..A,HVR,CS..A,PWR,CN,HMR,CR,SWR,CS,AS,AS..A,TR
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型号- PWR05,PWR06,PWR12JTES1001A,PWR..A,PWR..A SERIES,PWR10,PWR,PWR12,PWR02,PWR13,PWR03,PWR SERIES
光颉科技SWR系列电阻的精度如何?
光颉科技的SWR系列电阻有±%5,±%10,±%20三个精度范围,阻值范围1Ω至20MΩ,封装从0402到2512的常规封装均有,详细内容可以参考:【产品】抗浪涌抗脉冲高功率贴片电阻器SWR系列,额定功率最高可达1.5W。
CR(AC)/CN/RT/AS/HVR/PWR/SWR/HMR/CR..A/AS..A/CN..A/HVRC/CRW/CNF/CNF..A/CRTC..A/PWR..A/SWR..A/HVR..A/CRW..A THICK FILM CHIP RESISTOR RoHS (SGS) Test Report (EKR23302192M01)
型号- SWR..A,RT,CN..A,HVR..A,CR..A,HVR,PWR..A,CNF..A,CRW,PWR,CN,HMR,CRAC,CRTC..A,CR,SWR,AS,AS..A,CRW..A,CNF,HVRC
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型号- PWR05,PWR06,PWR12JTEA1001□,PWR10,PWR,PWR12JTRA1001,PWR12,PWR02,PWR13,PWR03,PWR SERIES
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Surge Withstanding Chip Resistor-SWR Series
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品牌:光颉科技
品类:Automotive Grade Thin Film Precision Chip Resistor
价格:¥0.2057
现货: 27,000
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品类:Automotive Grade Current Sensing Chip Resistor
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品牌:光颉科技
品类:Automotive Grade Anti-Sulfurated Chip Resistor
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品牌:光颉科技
品类:Automotive Grade Anti-Sulfurated Chip Resistor
价格:¥0.0320
现货: 9,900
品牌:光颉科技
品类:Automotive Grade Anti-Sulfurated Chip Resistor
价格:¥0.0139
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品牌:光颉科技
品类:Automotive Grade Anti-Sulfurated Chip Resistor
价格:¥0.0320
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品牌:光颉科技
品类:Automotive Grade Anti-Sulfurated Chip Resistor
价格:¥0.0320
现货: 9,765
服务
可自由定制电池形状,锂离子聚合物/磷酸铁锂成分,放电倍率Max. 50C (持续放电倍率) / 150C (脉冲放电倍率),充电倍率:Max. 5,厚度可达0.5mm。
最小起订量: 5000 提交需求>
可定制分流器电阻范围20uΩ~100uΩ,可自由设计铜排形状尺寸,电镀:镀锡/镀镍。支持RoHS指令 、AEC-Q200。认证资格:IATF16949;ISO9001;检测精度:0.1%。
最小起订量: 100个 提交需求>
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