【产品】汽车级露天式电流采样电阻,阻值低至1mΩ
OARS系列(OARS1,OARS3,OARS-XP,OARS-1Z)是TT Electronics推出的一款符合AEC-Q200标准,表面贴装的采样电阻, 其有针对热膨胀的弹性导线,露天式的设计利于PCB的散热。除此之外,其电阻值可低至1mΩ,元件TCR系数为±20ppm/°C,版型为零欧65A的跳线版本。
OARS系列电阻针对不同型号有不同的电子特性。OARS1的电阻范围在0.002Ω~0.05Ω,OARS3的电阻范围在0.002Ω~0.015Ω,OARS-XP的电阻范围在0.001Ω~0.025Ω。所有OARS系列电阻环境温度范围均为-55°C 至160°C。其它更多电子特性如图1所示:
图1 OARS系列电子特性
OARS系列更多性能数据如图2所示:
图2 OARS性能数据
如图3所示是对OARS进行热力学性能测试,这些热像图是在25°C下的静止空气环境条件下拍摄的,元件均安装在如下定义的垂直标准测试板上:
图3 OARS系列部分热像图
JEDEC标准电路板:
图4 JEDEC标准电路板
2寸(50.8mm)方形FR4,2个外部电源层,2盎司(70μ)铜;
1寸(25.4mm)方形盘裸露在外,2个内部信号层,1盎司(35μ)铜(持续层);
与普通平板芯片版型对比,OARS的版型使得与热点保持热力学距离焊接和减少不必要的热量输送到PCB板中。其他欧姆值和功耗的热像图可根据要求提供。
开尔文(四线)检测法
对于高精度应用,推荐使用开尔文(四线)检测法。 如图5所示来说明设计原理。电流的连接要做成是两对较大的焊盘点,而电压感测连接是两个较小且位于中央焊盘点。
图5 开尔文(四线)检测法
如图6所示,是用于测量未安装零件的标准4终端探头位置。
图6 4终端探头位置
OARS系列采用铜终端焊接到电阻合金带而制成。电阻值通过控制其宽度进行调整,而不需要打磨或对切口进行修整。无铅终端由96%锡/ 4%银合金所构成。值得注意的是在任何温度或过载条件下,电阻均不会燃烧或发射白炽颗粒。这些部件的图例标有欧姆值和偏差代码。
OARS系列有以下两种part number:
图7 European及USA版型
OARS系列的特点:
·AEC-Q200标准;
·TCR系数为±20ppm/°C;
·电感<10nH;
·露天式设计;
·无铅并兼容RoHS标准;
·环境温度范围为-55°C 至160°C;
OARS系列的应用:
·电流采样电阻
·贴片电阻
·汽车级电阻
·汽车电子
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本文由sky翻译自TT ELECTRONICS,版权归世强硬创平台所有,非经授权,任何媒体、网站或个人不得转载,授权转载时须注明“来源:世强硬创平台”。
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【选型】TT Electronics(TT) 汽车级电阻选型指南
目录- AEC-Q200 认证的电阻
型号- LRMAP2512,LRMAP3920,PCF0402,WSMHP25,PCF0603,LR,OARS1,WSMHP20,WCR1210…A,CHP,LHVC,WCR2512¡�A,PCF1210,WCR…A,WPRT40,LRZ,CHP2,CHP1,CHP1/2,ULR,LR(F)2512,CHP1/8,PCF1206,LRZ2010,LHVC2010,LR1206,LR2010,PCF-H,WCR0402…A,LRZ1206,PCF1210H,PCF2010,WCR0805…A,LRMAM1206,BCN,WHPC,PCF,PCF1206H,WCR1210¡�A,WPRT50,BCN164AB,OARS,LRMA,WPRT10,WPRT15,WCR0603…A,OARSXP,WCR2512…A,WCR0805¡�A,WSMHP,WCR2010¡�A,LRMAT2512,ULR25,HVC2512,ULR2,LRF3W,PCF2010H,ULR1,LR(F)2010,PCF0805H,LR(F)1206,WPRT20,PCF0603H,LRMAN0815,ULR3,WCR1206…A,LR2512,SC3,WSMHP35,LRZ2512,PCF2512,WHPC2010,WPRT,HVC,OARS3,PCF0805,WCR1206¡�A,WCR0603¡�A,WHPC1206,WCR0402¡�A,WPRT30,WCR2010…A
CURRENT SENSE RESISTORS - Application Note
型号- OAR,4LPW,WMHP20,OAR-5,2504,LRF3W,OAR5,LR(F),PLO,OARS-XP,CSL-5,OAR1,LRCS,OAR3,ULR,EBW,OAR-1,CSL,OAR-3,LOB,LR2512,WSMHP35,PWRL,LR1206,LR2010,W31,LRMA,OARS-1
TT Electronics (TT)电阻器选型指南
目录- Technology and Product Selector Guides Current Sense Resistors High Value/Voltage Resistors Surge/Pulse Resistors High Power Resistors Precision/Fusible Resistors High Reliability Resistors Temperature Sense & Thermal Management Resistors Zero-Ohm Jumper & General Purpose Resistors Colour Code for Band-marked Resistors
型号- BCN168SB,WH SERIES,T 2010,WP25S,WMO7S,BCN168RB,0612X,BCN,WP5SZI,WHS-UL,WIN SERIES,RCP,SQM5,SQM3,SQM2,EBW5216,N 0815,LRF SERIES,SQM7,4507,LRCS,4500,WMO5S,4501,4502,4503,4504,VRW37,4505,4506,RHVD08,RC70P,T0603,WRM SERIES,HDSC,CR,LVC SERIES,VRW25,DIV23 SERIES,ULW SERIES,RHVD15,LRMAPXXXX SERIES,4530,GHVC SERIES,ULR3N,4531,WDBR-UL,TJC,RHVD10,RC65,WMO3S,BPR50,WH10,ULR,EMC,LCS SERIES,ULW,WP-SZI SERIES,WHPC,PCF,WMO2S,RC55,4532,4533,4534,4535,4536,4537,PCR,HPDC SERIES,OAR,SQP SERIES,WPYP10,ULR1S,BCN10,WSHR,ULR25,WRM,1900 SERIES,W20,WMO1S,W22,W21,T0805,W24,W23,SQP7,SQP5,ULR2N,BPR30,SQP2,SQP3,SOT143 SERIES,RC70,LR SERIES,WSM,HVC,W31,W30,HVD,WHS2,WHS3,WHS5,W20 SERIES,WH25,WHS7,WP3SZI,BPC3,RC65P,HVP,WH50,LHVC,HR,PFC,WMO-S SERIES,VRW,MFP1,MFP2,BPR10,WA84F,EBW SERIES,MF-S,WP-SZI,BPC7,BPC5,HVP SERIES,MFC SERIES,WSM2,WSMHP,WSM3,GHVC2512,MF1/2S,WCM SERIES,BPC10,LOB-5,ULR15S,LOB-3,MFR5,LRF3W SERIES,MFR3,MFR4,HVD08,RHVD10A,WH100,RC SERIES,VRW SERIES,SOT,RC55P,WSMHP25,HVD15,LR,WSMHP20,HVD12,1020X,DIV23,SPP,WMHP35,DSC,0508X,WRM-HP SERIES,WP-S SERIES,MF2S,LOB SERIES,MFR SERIES,HVD20,WHS10,WH200,WMHP50,SQM,PFC-HT,LRZ SERIES,SQP,BPC,LRMA,WSMHP SERIES,OARS-XP SERIES,LCS,MF1S,EMC SERIES,PR SERIES,BPR,WMHP20,N 0612,MFC,HVD30,RHVD15A,PCFH,T43,OARS-XP,T44,MFP,MFR,PCFP,T48,WCR SERIES,WA84F SERIES,WSMHP35,4530 SERIES,WH300,T0402,APC,HPWC,MF3S,VRW68,PR,WPYP SERIES,LRCS SERIES,OAR-5,OAR-1,OAR-3,1908,RC,PCR SERIES,RHVD SERIES,PCF SERIES,WHS5UL,1906,1905,1900,N 1225,BCN SERIES,PWC SERIES,1600 SERIES,LRF3W,ASC,WHPC SERIES,MFP SERIES,HTCR,PWP08,RCP SERIES,CAR SERIES,APC SERIES,WPYP8,P4026,PR5,PR4,TJC SERIES,WMHP,WP-S,SQM SERIES,SPP SERIES,PWP04,PWP06,OARS1,GHVC1206,T1206,OARS SERIES,HVP08,HVP06,TFHP SERIES,HVP04,WHS-UL SERIES,WRM-HV SERIES,PTS SERIES,HVD SERIES,M 2512,WSM SERIES,P 3920,WMO1/2S,WHS SERIES,SC3 SERIES,HVP15,ULR SERIES,HVP10,SPP-1,T 2512,LHVC SERIES,SPP-3,PTS,SPP-2,ULR2,ULR1,WH,WP2S,BPR SERIES,EMC2,WDBR1/2,ULR5,TFHP,HVP20,ULR3,M 1206,WL4 SERIES,BPR7,0207HP,BPR5,1602,BPR3,1601,SP20F SERIES,1600,WP1S,WPRT,WRM-HV,GCR,1609,1608,1607,1606,1605,SP20F,1604,1603,WRM-HP,WCM,WMHP SERIES,WCR,BPC SERIES,PFC-D,BCN164A,WP4S,WDBR5,WDBR SERIE,WDBR7,WDBR2,CAR7,PWC,WDBR1,CAR6,LOB,CAR5,WDBR3,PWP,P 2512,WP3S,BCN164AB,WPRT10,WPRT15,M 0805,P2817,OARSXP,RHVD,P 2726,WMO-S,WPRT20,EBW,3810,3811,WP2SZI,3812,CR SERIES,S0M10,DSC SERIES,WMHP100,GHVC,4800 SERIES,WPRT30,WP5S,HTCR SERIES,LRF,WH5,LRMA SERIES,P 5930,4804,4805,WPRT40,LRZ,GHVC2010,GCR SERIES,WPYP,PWP10,4800,PWP15,4802,WHS,HPDC,EBW8518,MF-S SERIES,OAR SERIES,PWP SERIES,4500 SERIES,ULW5,ULW4,ULW3,ASC SERIES,WPRT50,CAR,ULW2,OARS,PWP20,WHS3UL,W30 SERIES,4812,WIN,SQP20,SQM10A,LRMAPXXXX,3810 SERIES,WPRT SERIES,SOT143,HR SERIES,HVC SERIES,SQP15,SC3,SQP10,WDBR,WHS2UL,LVC,PFC-D SERIES,4832,WL4
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OARS, OARS-XP, OARSZ Series Surface Mount Sense Resistors
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AEC-Q200 Qualified Resistors Resistors targeted at automotive applications
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TT Electronics Resistors/Divider选型表
覆盖多种电阻以及高压平面分压器,分压器最小功率可达0.75W,TCR参数值有25ppm/℃、100ppm/℃,电阻最小功率可达0.063W,多阻值选择,最小公差0.01%
产品型号
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品类
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Description
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Series
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Approval
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Power(W)
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LEV(V、kV)
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Resistance(Ω、kΩ、MΩ、GΩ、TΩ)
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Tolerance
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TCR(ppm/°C)
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3810
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resistor
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Ultra-high value precision resistor
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3810
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None
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0W
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500V
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100MΩ - 1TΩ
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10%
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500ppm/°C
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选型表 - TT Electronics 立即选型
LR Series Current Sense Application Note
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Product Data Short Form Resistors BI Technologies IRC Welwyn
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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>
可定制风扇尺寸覆盖18x18x04mm~165x165x25mm,随散热器大小而定制;风扇转速范围:1000 RPM~16500 RPM。支持DC风扇,直流风扇轴流风机,鼓风机以及电脑笔记本风扇等产品定制。
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