【应用】特定的比率公差及跟踪TCR的高精密电阻，IVD分析设备的首选

时间： 2018-04-04 来源：TT Electronics

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精密金属膜电阻,TaNFilm®精密芯片分压电阻,非水溶性氮化物薄膜贴片电阻,精密薄膜镍铬合金贴片电阻

随着医学中新技术的发展以及电子工程提供的新解决方案，电子产品被越来越多地应用到医疗设备中。如图1所示的IVD（体外诊断）技术，如通过对血液样本进行检测而获取临床诊断信息。对于进行IVD的医用分析设备，所使用的精密电阻需要具有严格的公差、低温敏感性以及高稳定性。

图1 IVD（体外诊断）

在具有电阻式传感器设备的输入级，如图2所示的精密温度监控电路中的热敏电阻，由一个电阻桥组成，各电阻的阻值必须紧密匹配。在这种情况下，更为重要的是阻值比，而不是电阻的阻值本身。同样，TCR之间的最大差异（即跟踪TCR）比TCR本身更重要。

图2精密温度监控电路

针对这些情况，TT Electronics公司提供了两种解决方案：

首先，该公司的绝大多数通孔精密电阻产品都有匹配的集合，并具有特定的比率公差及跟踪TCR，能够提供最佳的可用精度。例如，PR系列、RC系列以及RCP系列精密金属膜电阻，阻值范围100Ω~1MΩ（PR系列）、1Ω~10MΩ（RC&RCP系列），跟踪TCR可低至2ppm/℃，绝对公差可低至0.05%，比率公差可低至0.02%；CAR系列和MAR系列超精密金属膜电阻，阻值范围10Ω~10MΩ（CAR系列）、20Ω~400kΩ（MAR系列），跟踪TCR可低至1ppm/℃，比率公差可低至0.005%。

其次，该公司的多元素SMD薄膜电阻产品提供了结合高精度及紧凑型单组件特性的解决方案。主要包括PCF系列精密薄膜镍铬合金贴片电阻，采用精密薄膜技术，阻值范围1Ω~3MΩ，精度为±0.01%（电阻公差）和2ppm/℃（TCR）；WIN系列非水溶性氮化物薄膜贴片电阻，采用TaN薄膜技术，精度为±0.05%（电阻公差）和±15ppm/℃（TCR），在潮湿和污染的环境中具有高稳定性；PFC-DIVIDER系列TaNFilm^®精密芯片分压电阻，流行的1206芯片尺寸，阻值范围10Ω~150kΩ，经过COTS应用测试，绝对TCR为±25ppm/℃，跟踪TCR为±5ppm/℃。

图3 各系列的主要特性

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型号- MAR系列,WIN系列,RC系列,RCP系列,PCF系列,PR系列,CAR系列,PFC系列

TT ELECTRONICS - 商品及供应商介绍代理服务技术支持采购服务

【产品】电压高达1kV的精密金属膜MELF电阻器，HV应用首选

TT推出的WRM-HV系列电阻器具有340KΩ至3.4MΩ的宽电阻值范围，精度规格为±0.1％和±25ppm/°C，适用于工业、仪器仪表和医疗电子等细分市场

2018-02-11 - 新产品代理服务技术支持采购服务

【产品】采用TaNSil技术的引线键合电阻/电容电路，可形成3种应用样式

WBC-RC系列是TT electronics集团旗下电阻业务部门推出的一系列引线键合电阻/电容电路，即集成电阻/电容于一身，符合ROHS标准。产品采用了品牌IRC成熟的TaNSil薄膜技术，器件衬底厚度（基材厚度）为0.254mm ±0.025，衬底材料使用硅，保证了器件的稳定性和韧性，产品广泛应用于医疗电子、多媒体、笔记本电脑、汽车电子设备和机顶盒等领域。

2018-05-20 - 新产品代理服务技术支持采购服务

合格证书-“EU RoHS 3”声明

型号- PR,PR5,PR4

10th Aug 2021 - TT ELECTRONICS - 测试报告代理服务技术支持采购服务

TT Electronics（TT）MAR 40/42系列超精密金属膜电阻器数据手册

描述- MAR 40/42 series Ultra Precision Metal Film Resistors

型号- MAR 40,MAR40,MAR40V–68K1EI,MAR42,MAR40V-68K1EI,MAR 42

2018年6月 - TT ELECTRONICS - 数据手册代理服务技术支持采购服务

产品数据简表电阻器BI Technologies IRC Welwyn

描述- 该资料由TT Electronics plc提供，介绍了其电阻器产品线。内容包括不同类型的电阻器技术、产品系列和应用案例。重点强调了公司在医疗、航空航天和消费电子产品中的应用解决方案。

型号- BCN168SB,WH SERIES,OAR-5,1210,WP25S,T 2010,WMO7S,0805,OAR-1,OAR-3,WLT,1218,BCN168RB,1908,BCN,PLO-5,WP5SZI,PLO-3,1225,PLO-7,W215,1906,1905,RCP,1900,SQM5,SQM3,SQM2,N 1225,N 0815,SQM7,4507,ASC,LRF3W,CC SERIES,PFCHT,LRCS,WP-S,4500,WMO5S,HTCR,4501,4502,4503,4504,GC55,VRW37,4505,4506,RHVD08,PWP08,RC70P,WPYP8,MFR4P,T0603,PR5,PR4,1005,WMHP,VRW25,PWP04,PWP06,RHVD15,4530,OARS1,4531,CHP,1020,T1206,PLO-10,RHVD10,GC70,HVP08,HVP06,RC65,WMO3S,HVP04,BPR50,WH10,EMC,ULR,0603,ULW,PWRL,M 2512,P 3920,WMO1/2S,WHPC,PCA,0612,PCF,WMO2S,RC55,4532,HVP15,4533,SQM10,4534,GC65,4535,4536,BCN4D,4537,PCR,HVP10,SPP-1,OAR,T 2512,WPYP10,2010,ULR1S,BCN10,PTS,SPP-3,ULR25,SPP-2,ULR2,ULR1,WP2S,WRM,W20,WMO1S,W22,W21,EMC2,T0805,W24,WDBR1/2,WBC,W23,HVP20,0503,ULR3,SQP7,SQP5,M 1206,BPR30,SQP2,SQP3,BPR7,RC70,BCN21,BPR5,WSM,1602,BPR3,1601,1600,WPRT,WP1S,HVC,W31,W30,WRM-HV,GCR,HVD,WHS2,WHS3,1609,1608,WHS5,1607,2817,1606,WH25,SP20F,WHS7,1605,WP3SZI,1604,WRM-HP,1603,BPC3,RC65P,HVP,WH50,WCR,LHVC,PFC,PFC-D,BCN164A,WP4S,0402,WDBR5,BCN318SB,WDBR7,PCA164,CHP2,CHP1/2,CHP1,VRW,MH37,WDBR2,CAR7,WDBR1,CAR6,LOB,MFP1,CAR5,CHP1/8,MFP2,WDBR3,BPR10,WA84F,P 2512,GPCF,WP3S,BCN164AB,WPRT10,MH25,MF-S,WP-SZI,WPRT15,PWC,BPC7,M 0805,1505,MAR,BPC5,RHVD,OARSXP,PWP,WSM1,WSMHP,WSM2,WSM3,GC SERIES,MF1/2S,LOB-1,0303,WMO-S,BPC10,LOB-5,ULR15S,PTCR,LOB-3,MFR5,WPRT20,3810,3811,WP2SZI,MFR3,3812,CR SERIES,MFR4,HVD08,RHVD10A,WH100,WMHP100,RC SERIES,SPP,LR (F),BCN318RB,SOT,WPRT30,RC55P,WP5S,MAR 40,WSMHP25,HVD15,WH5,WSMHP20,HVD12,4804,0204,4805,DIV23,0202,WMHP35,WPRT40,DSC,LRZ,0201,WPYP,PWP10,MH,4800,PWP15,MF2S,4802,0207,WHS,HVD20,WHS10,WH200,WMHP50,SQM,PFC-HT,ULW5,SQP,ULW4,2512,BPC,ULW3,CAR,WPRT50,ULW2,OARS,PWP20,LRMA,LCS,WIN,4812,MAR 42,MF1S,CRT,PR SERIES,BPR,SQP20,WMHP20,N 0612,MFC,HVD30,RHVD15A,PCFH,CC1,LR(F),PLO,T43,OARS-XP,CC2,T44,0102,MFP,MFR,PCFP,T48,SOT143,HR SERIES,SQP15,SC3,WSMHP35,SQP10,WH300,1206,T SERIES,HPWC,WDBR,LVC,4832,MF3S,WL4,VRW68

2017/11/15 - TT ELECTRONICS - 数据手册代理服务技术支持采购服务