热电偶、热电阻及NTC热敏电阻的性能对比
温度传感器概念及分类
近年来,我国工业现代化的进程和电子信息产业连续的高速增长,带动了传感器市场的快速上升,其中温度传感器作为传感器中重要一类,占整个传感器总需求量的 40%以上,数量高居各种传感器之首,可用于厨房设备、可穿戴设备、智能家居、工业控制、汽车等领域。温度传感器是指能感受温度并转换成可用输出信号的传感器,感温元件是温度测量的核心部分。温度传感器按感温元件特性分为热电偶、热电阻和热敏电阻三类,以下分别介绍。
●热电偶
热电偶是工业上最常用的温度检测元件之一。将两种不同材料(但符合一定要求)的导体或半导体 A 和 B 的任意一端焊接在一起就构成了热电偶。组成热电偶的导体或半导体称为热电极,被焊接的一端插入测温场所,称为工作端,另一端称冷端。当两端温度不同时就会有热电势产生,将温度信号转换为电信号再由仪表显示出来。由于热电偶的材料一般都比较贵重(特别是采用贵金属时),而测温点到仪表的距离都很远,为了节省热电偶材料,降低成本,通常采用补偿导线把热电偶的冷端(自由端)延伸到温度比较稳定的控制室内,连接到仪表端子上。如图 1 所示。
图1
对应一定材质,其两端的温度与热电势间有固定的函数关系,利用这个关系就可以测出温度值来。热电偶的热电势随温度的升高而增大,其热电势的大小与热电偶的材料和热电偶两端的温度值有关,而与热电极的长度、直径无关。
●热电阻
热电阻(ResistanceTemperatureDetector)测温是基于金属导体的电阻值随温度的增加而增加这一特性来进行温度测量的。热电阻大都由纯金属材料制成,如铂、镍、铜等,所选金属必须具有可以预测的电阻值随温度变化的特性,其物理性能要易于加工制造,电阻温度系数必须足够大,使其电阻随温度的改变易于准确测量。表 1 列出了几种热电阻的温度电阻特性,其中以铂电阻具有最为精确、可靠的温度电阻特性。
表1
●热敏电阻
热敏电阻包括正温度系数(PTC)和负温度系数(NTC),其中温度传感大多数为负温度系数,即阻值随温度增加而降低。NTC热敏电阻是以锰、钴、镍和铜等金属氧化物为主要材料,采用陶瓷工艺制造而成的,这些金属氧化物材料都具有半导体性质,因为在导电方式上完全类似锗、硅等半导体材料。温度低时,氧化物材料的载流子(电子和孔穴)数目少,其电阻值较高,随着温度的升高,载流子数目增加,其电阻值降低。主要电性参数如下:
①零功率电阻值 R25
指在规定温度(25°C)测得的直流电阻值,由于自热导致的电阻值变化对于总的测量误差可以忽略不计。
②B 常数
它是由两个特定环境温度下的电阻值计算出来的,表征电阻随温度变化的快慢程度,即 B 值越大,电阻随温度的升高下降的越快,反之亦然,如图 2 所示。
RT1:温度 T1(K)时的电阻值;RT2:温度 T2(K)时的电阻值。
图2
③耗散因子 δ
指通过自身发热使其温度升高 1°C时所需要的功率。
④热时间常数τ
热时间常数是以秒为单位,指在零负载状态下,当环境温度发生急剧变化时,热敏电阻元件产生最初温度 T0 与最终温度 T1 两者温度差的 63.2%的温度变化所需的时间。它与热敏电阻的外形尺寸以及对环境的热耦合有关,与 NTC 热敏电阻的热容量 C 成正比,与其耗散系数 δ 成反比,即公式τ = C / δ。
综上所述,以下汇总比较了热电偶、热电阻及 NTC热敏电阻:
顺络电子温度传感器
顺络电子温度传感器采用的感温元件为NTC热敏电阻,通过测量NTC热敏电阻的电阻值来确定相应的温度,从而达到检测和控制温度的目的。一般是由核心元件NTC热敏电阻与外壳加环氧封装而成,应不同的使用条件可选择电线与连接器组合连接,高端温度传感器也有直接采用热塑注射成型封装方式,这样产品可以适应较高的耐环境要求。
●规格简介
*电线长度,R/T 特性可根据要求定制。
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TE Connectivity(泰科)传感器选型指南
目录- Company Profile DIGITAL COMPONENT SENSOR DEVELOPMENT TOOLS FLOW SENSORS FORCE SENSORS HUMIDITY SENSORS LIQUID LEVEL SENSORS PHOTO OPTIC SENSORS PIEZO FILM SENSORS POSITION SENSORS PRESSURE SENSORS RATE AND INERTIAL SENSORS SCANNERS AND SYSTEMS SPEED SENSORS TEMPERATURE SENSORS TORQUE SENSORS ULTRASONIC SENSORS VIBRATION SENSORS WATER LEVEL SENSORS
型号- 7504A,3255A,T500,8011-AR,8011-AP,CD9515,DSD 25,68CM1,FS-90,FS-91,6900,4602,4604,7505A,MS4525DO,DSD 17,TSYS02D,CWW600,D5100,4610,MS8607,EPRB,XP5,805,5903 SERIES,808,89BSD,T400,4630,SDT1,P1200,606M1,PS2011AB,LDTC FAMILY,DSD 40,ELM-4000,3058A,MS5803-01BA,FMT,SIL-3,M7100,700,LS809-31,EGCS-D5,TLH100,4332M3,FTP520,MS54XX,EGCS-D0,ESP 64HD,XL403D,AST46HA,832,FN7110,HSTA,834,EB,PS501,LDM-1000,U86B,DP86,KMXP 1000,52M30,PS2021AB,M905,RVIT-Z,603,LS509-51,ELM-5000,TS318-3B0814,FN4070,H005,PT500,H009,610,RCS01-10,31207B,FTP540,CWW850,PML 1000,LDS309-11N,EPB-PW,EVS722-51,CWW1000,FN9630,GC,FN9635,FLDT1,U7100,FTP530,85F,FN4080,834M1,HTU2X,ARD154,EPB,EGAXT,VS804-21,HC,65210E,EPL,7108A,86A,CLP,AST46SW,HR,MS52XX,KMXP 2000,AST4510,KPSI 730,KPSI 735,FTP560,633,634,7531A,XFTC300,Y12AD,18FR,FTP552,FTP553,FTP554,AST4401,AST4400,AST4520,KPSI 720,U5700,KPSI 600,FN4055,KPSI 601,400,MS5803-30BA,FTP551,31206B,FN9620,DPG,TRUBLUE 255,LL-01,FN7325,DPL,DPN,64B,40A,64C,40B,HTF3000LF,52F,3022,KPSI 750,KMT37,FN3050,TPT,64X,KMT39,9916,53A,AST43LP,ESP 16HD,AST4500,KPSI 500,KPSI 501,KPSI 745,3028,86BSD,8811-01,PM50,KMA36,TSYS01,LT,TSYS02,ATA-2001,KMT36H,P900,LBB,G-SERIES,PM81,FN3030,DSD,3038,DSF,CM-01,DSH,8021-AP,8021-AR,DSL,PM83,CD375,ML,DT1,4020,TSD,6200,DSS,AST46PT,AST44LP,805M1,AST4600,DSY,TSD305,7500A,DC-SE,EGAXT3,4030,LDTC,XPM10,MS4515DO,KPSI 710,PT100,MSP300,AST20HA,XS-C,XS-D,7501A,LL-10,HTU3535PVBM/WIRE,PT101,6100,SSI,HTG351XCH,AST2000H2,KPSI 700,SSR,KPSI 705,TRUBLUE 275,LS304-31,LMM-H04,LMM-H03,FN3148,TSYS,DSD 70,7502A,7514A,P700,APS,4810A,CD1110,KPSI 330,8021-VP,8021-VR,KPSI 335,AST4000,7135A,5905 SERIES,400 SERIES,XFL212R,6000,LVM-110,KMXP 5000,KPSI 320,AST44XX,8711-01,121,FN3002,AST5100,LCS-03,FN3000,CS1120,R36,PCA 375,U5300,RT9,RT8,M3200,7100A,9400,TLH600,CPA150,HS1101LF,M210,AST20SW,KPSI 351,KPSI 353,HTU383X/WIRE,130,IT9000,KPSI 355,AST5300,AST4100,SG,CD1140,XPM4,SK,7101A,SM,FX19,MSP100,SP,EPM-5000,TPT300V,PM101,MSP340,SR,12FR GP,PT9000,AST45XX,KPSI 342,1201F,MT3A,ACH-01,SL-630,M5600,7102A,PT1000,TS,EL20-S458,8011-VP,MS5805,XFU400,MS5803,MP 2000,P981,HSTAR,KPSI 30,HTM2500LF,CS1210,AST5400,E-SERIES,MLP,FN1010,HTU2XF,HM1520LF,TS305-10C50,24FR,TRUBLUE 585,16MS,52,8011-VR,KPSI 27,MS32,KPSI 28,58,MS1451,XPM6,160,AST46XX,ESP 32HD DTC,PT1,161,ACCUSTAR EA,AST4200,PT5,DSH 16,DOG2,FX29,MMX,12FR,ESP 64HD DTC,7104A,TRUBLUE 575,FN2114,US300,9FR,9146-R,GHSE,PTX,85BSD,7105A,MS5837,9216,KMA36A,AST20PT,AST4300,MS1471,9146-T,808M1,U5600,FN2570,CD1050,EPM-4001,XP,82,MS5525DSO,85,86,TRUBLUE 555,FS-01,89,MS5607,FS-02,FS-05,FS-06,ED32I,MS5840,PS2031AB,8032-01,FN2420,R60D,3052A,154BSD,P9000,MS5611,XFC200R,EPIH,ELAF,ESP 32HD,M12,3801A,1620,KMY,65210ES,KMZ,FN2317,M150,AST46DS,11206AC,10FR,PS831,8021-01,EGCS-D1S,KPSI 300DS,1630,820M1,XPC10,TSEV,53AF,140A,SL-900,MS5637,CD1124T,EVS312-11N,MT2,MT3,CS1060,CD1095,832M1,VCS-06,MTA,VCS-04,3700,M5200,FN7080,P105,P101,9022,FS19,7131A,FC22,FC23,4630M12,9034,142A,9038,154N,4801A,9032,LIM-420,9033,5905,GHSER,7132A,LTA,ACCUSTAR IP66,LTB,4630M14,5903,PT8000,P125,TS318-5C50,T600,8102A,LTR,HM1500LF,R30A,GHSER 750-A,HTU21D,8011-01,PS801,700 SERIES,KPSI 380,NDT-1,FS20,FS22,4835A,AST43XX,D-SERIES,FS23,U5200,1201,1200,HPGS 750,FCA7300,AD-101,PS811,VS309-51N,KMXP,11207AC
Amphenol Sensors(安费诺)/Thermometrics 温度传感器选型指南
目录- 温度传感器产品介绍及应用领域 NTC热敏电阻/PTC热敏电阻 探针和组件 其他技术和附件
型号- T5D,HM,YA,YB,YC,P60,YD,YF,P65,YG,YH,RL40,YK,YL,YP,YR,EC95,GC32,YS,RL45,GC16,B35,UD20,RL30,3006,AB6,MELF,JA,YS4019,JB,JTC,JC,JD,RL35,JE,JF,MF65,SP85,JS2945,JI,B43,JL,JM,JP,FP10,JR,JTR,CTR100,FP14,P85,JW,M,NDK,T,NDM,CTR65,NDL,ZTP,BB07,PT1000,0706,BB05,NDP,YS4020,NDU,YSM 4021,CL,CTR85,BR16,KU,BR14,KY,BR11,TC,FP07,1403,NHQM,YSM,TH,R100,TM,MA400,PTSM,TP,1803,BB11,EVAP,P100,MA100,DK,SC30,R60,BR23,P20,R65,HVAC,P25,YM120,PT200,EVAPA1450,MS,DKM,MT,CTR60,P30,RL1004,BR32,A1447-A1450,ND,PTA,NK,EVAPA1447,1703,PTE,PTD,SP100,PTF,DC95,PTH,B05,B07,PTO,EVAP A1424,SC50,R85,BR42,C100,2006,JYA,NHQ,NHQMM,GC11,GC14,GE,RL20,M2000,B10,PT100,B14,GT,BR55,MC65,SP60,TK95,SP65,RL14,RL060628,RL10
NST175-Q1 Automotive Level Temperature Sensor with SMBus and I2C Interface Datasheet (EN) 1.0
型号- NST175H-Q1MSR,NST175H-Q1SPR,NST175-Q1
SEMITEC(石塚)定制传感器(NTC热敏电阻组件)选型指南
目录- Basic thermistor characteristics & application circuit example OA Equipment's sensor Automotive sensor Medical sensor Home Appliances' sensor Industrial Equipment's sensor Standard Assembly Product
型号- 103AT-11,203AT-11,EC2F503A2-70456,ED5F103A2-ASSY-4,EC2F103A2-40113-600AY,EC2F203A2-70030,EC2F104A2-60109,EC2F102A2-71014,EC2F202A2-71048,103JT-025-600AY,202AT-11,502AT-11,EC2F103A2-40113,102AT-11,EC2F103A2-XXXXX,EC2F502A2-40103,104AT-4-ASSY-5,XXXAT-11,103AT-2-34119,EC1K103A2-17E011,EF1M493NT-ASSY-1/2
Amphenol Sensors(安费诺) 汽车传感器选型指南
目录- 汽车传感器解决方案介绍 车厢空气质量系列传感器 排放处理系列传感器 新能源汽车传感器应用 测量汽车应用中最为关键的参数
型号- SM-UART-01L,PT200,T6703,TPMS,DPS,G-CAP2,SM-UART-01D,A2103,NPI-19,T6713,A-2102,EGR,A-2103,NPP-301,GE-1935,A-2121,ZTP,DPF,SM-UART-01L+,SM-PWM-01C,NPX1
纳芯微工业控制解决方案
型号- NSI6801,NSI1311,NSI1312,NSH050,NSI824X,NSAD114X,NCA8244,NSM2017,NSM211X,NST175,NSM2019,NSM2013,NSI22C11,NSL82XX,NSM2015,NSI68515,NSM2011,NSD5604,NSM2012,NSA2862X,NSR33XXX,NST86,NSOPA9XXX,NSI1300,NSI6801M,NSREF31XX,NSI1306,NST112X,NSI1303,NCA1044,NSI1305,NSR7808,NSE11409,NSI8266,NSI8100,NSR28C4X,NIRS21,NSI8260,NSOPA8XXX,NCA9555,NSI1200C,NSD1026V,NCA1042B,NSAD124X,NSI8608,NSD12416,NCA3176,NSCSA24X,NSI83086,NSM201X,NSI83085,NSM2113,NSM2311,NST235,NSR31XXX,NSCA199,NSA2860X,NST60,NSD1624,NST20,NIRS31,NSR104XX,NSR35XXX,NSD1224,NSREF30XX,NSI1200,NSI1042,NSI1400,NSCSA21X,NSD11416,NSC2860X,NSI22C12,NCA1051A,NCA3485,NST1002,NST1001,NSI82XX,NSI8200,NSI1050
详解HomeAssistant-C传感器实体使用方法,教您体验智能家居之旅
前段时间的外设移植活动中,有不少大佬给 Ai-M61 移植了很多传感器设备,应该还很少人把传感器的监控信息实现远程查看吧!那么今天,就带大家把传感器读取到的值上传到 HomeAssistant,实现远程监控。如果还没有搭建好 HomeAssistant 的,请看完智能家居之旅系列的其他帖子。
设计经验 发布时间 : 2024-07-12
SEMITEC(石塚)NTC热敏电阻选型指南(英文)
目录- NTC thermistors Micro thin film thermistor Micro thin film type sensor probe Thin film thermistor Very high accuracy thermistor High accuracy thermistor High sensitivity thermistor High temperature, high sensitivity, glass encapsulated thermistor High accuracy, SMD chip type thermistor High temperature axial type thermistor Non-contact (IR) temperature sensor Current regulating diode VRD voltage regulating diode Inrush current limiter THERMOPILE
型号- 103CT-01006,103FT1005A5P,503NT-4-R025H42G,Z2U SERIES,E-301,S-183T,ZD022,ZD027,Z2082,Z6068U,S-701T,S-822T,S-103T,103CI-01006,AP,202AT,203CT,AT,563CT-4,ZD033,FΜ,Z2U,503KT1608T,ZD039,303ET,Z6033U,103FT1005B5P,Z6100,ZD047,Z2008U,NT-4 SERIES,103FT1005A5P1-□,103KT1005T,ZS1033D-T,Z6056U,473CT-4,15D2-15,S-202T,833ET,15D2-13,502AT,15D2-11,234NT-4-R200H42G,204CT,CT,6D2-22,ZD056,15D2-08,202AP-2,473CT,203AT,103AT-11,ZS1033U,203AT-11,203AP-2,E-183,ZD SERIES,5D2-15,5D2-13,103AT-2、3,5D2-14,5D2-11,104NT-4-R025H42G,E-501,5D2-10,ZS1033D,S-272T,Z2010U,1.5D2-15,402ET,5D2-18,ZS-D,ZD068,Z6120,103KT1608T,ZS1022U,4D2-18,10TP583T,103ETB,503ET,563CT,103NT-4-R025H41G,103NT-4-R□□□H□□G,Z2 SERIES,103ET□□-□□,502NT-4-R025H39G,S-301T,ET,ZS1022D,S-152,S-153,502AT-11,Z6015,S-272,Z6018,Z6U,Z6012,4D2-11,4D2-13,4D2-15,4D2-14,Z6150U,203CT-4,104CT-90113,10D2-08,503CT-91027,105NT-4-R025H46G,10D2-07,513CT,10D2-05,103FT1005D5P,16D2-07,FT,10D2-10,16D2-13,16D2-14,Z2100,16D2-15,Z6027,20D2-11,S-183,403ET,16D2-10,16D2-11,Z6022,234ET,4D2-22,223FΜ5183,364FT1005A5P,E-272,E-153,562CT,E-152,10D2-18,5D2-05,ZS-U,10D2-15,504NT-4-R025H45G,S-153T,10D2-14,10D2-13,104NT-4-R025H43G,103AP-2,10D2-11,252CT-4,S-152T,20D2-05,5D2-08,202AT-11,113CT-4,Z6039,5D2-07,103JT,Z6033,20D2-08,502AT-2,ZS1015,ZS1018,Z6100U,ZS1012,512CT,113CT,204AP-2,E-701,E-822,212ET,□□□AP-2-□,Z2,Z6047,Z2120,Z6,1D2-22,S-123,204NT-4-R025H43G,1D2-15,1D2-13,Z6082U,103CT-4,852NT-4-R050H34G,103AP-2-A,S-352,912CT,Z2012,912CT-4,Z2018,104JT,Z2015,47D2-18,Z6056,Z6039U,ZS,203NT-4-R025H42G,Z6015U,Z6027U,103AT-□-FT,ZS1039,ZS1033,ZS1047U,S-352T,JT,E-123,3D2-15,3D2-11,102AT-2,204CT-4,Z2022,3D2-14,ZS1047D,NC-□□,Z2027,Z2012U,3D2-10,12D2-14,S-822,Z6018U,12D2-13,513CT-4,Z6068,12D2-15,ZS1012U,ZS1027,Z2033U-52Z,ZS1022,12D2-10,223FΜ3122,12D2-11,E-352,KT,103ET,S-501T,Z6U SERIES,3D2-22,223FΜ□,202AT-2,Z2033,Z2039,□102□,ZS1012D,232AP-2,224ET,104AP-2,12D2-07,Z2150,203AT-2,Z6082,Z6120U,103CI-21048,503FT1005B5P,E-102,5D2-11LT3C,E-101,503AP-2,E-103,Z2047,S-562,CT SERIES,22D2-07,S-202,Z2018U,104KT1608T,Z6022U,ZS1047,E-452,ZS1018U,Z6 SERIES,103CT,104ET,S-123T,102AT,Z2056,102AT-11,KT SERIES,5D2-11LCTR,ZS1018D,562CT-4,104CT-4,103KT1608T-□□,Z6047U,8D2-11,8D2-10,ZS1027U,ZS1015U,NT,512CT-4,364FT0603A5P,503FT1005A5P,E-562,S-102T,S-562T,S-223T,2D2-13,NT-4,2D2-11,ZS1039U,2D2-10,8D2-18,8D2-13,E-202,4.7D2-15,103JT-□□□,8D2-15,103NT-4-R025H34G,4.7D2-13,8D2-14,Z2068,493NT-4-R100H40G,103CT-□□□,ZS1015D,2D2-15,2D2-14,252CT,Z2180,ZS1039D,582ET,ZS1027D,S-103,S-101,S-102,S-223,Z6012U,103CT-21048,103AT-5,103AT-4,S-452T,8D2-07,103AT,S-101T,104CT,S-452,Z2015U,203ET,502AP-2,ZD015,ZD018
TE Connectivity(泰科TE)PTF-FAMILY系列铂金温度传感器数据手册
描述- PTF- FAMILY 铂金温度传感器(Platinum Temperature Sensors)
型号- NB-PTCO-005,NB-PTCO-126,NB-PTCO-006,PTFM102C1G0,PTFM102B1A0,PTFC102B1A0,NB-PTCO-002,PTFD102B1A0,PTFF102B1A0,PTFF101A1G0,PTFC102C1G0,PTFM101T1A0,PTFM101A1A0,PTFD101A1G0,PTFF101C1A0,PTFD101C1A0,PTFC101A1A0,PTFM101B1G0,PTFC101T1A0,PTFF101T1G0,PTFD101T1G0,NB-PTCO-012,NB-PTCO-011,NB-PTCO-013,PTFF101B1G0,PTFC101B1G0,PTF-FAMILY,NB-PTCO-180,NB-PTCO-182,NB-PTCO-181,NB-PTCO-184,PTFD102B1G0,NB-PTCO-183,NB-PTCO-186,PTFM102B1G0,NB-PTCO-185,NB-PTCO-188,NB-PTCO-187,NB-PTCO-101,NB-PTCO-189,PTFC102C1A0,PTFD102A1A0,PTFC102A1G0,PTFD101C1G0,PTFD102T1A0,PTFF101A1A0,PTFM101C1A0,PTFM101A1G0,PTFC102T1G0,NB-PTCO-191,PTFF102C1G0,NB-PTCO-190,PTFF101T1A0,NB-PTCO-193,NB-PTCO-192,PTFM101T1G0,NB-PTCO-169,PTFF101B1A0,PTFM101B1A0,PTFD101B1A0,PTFC101B1A0,PTFM101C1G0,NB-PTCO-160,PTFM102T1A0,NB-PTCO-162,NB-PTCO-161,NB-PTCO-164,NB-PTCO-163,NB-PTCO-166,NB-PTCO-165,NB-PTCO-168,NB-PTCO-046,NB-PTCO-167,PTFC101C1G0,PTFC102T1A0,PTFF102T1G0,PTFD102T1G0,NB-PTCO-171,NB-PTCO-050,NB-PTCO-170,NB-PTCO-173,NB-PTCO-172,PTFD102A1G0,PTFF102A1G0,NB-PTCO-175,NB-PTCO-053,NB-PTCO-174,NB-PTCO-177,NB-PTCO-176,PTFM102A1A0,NB-PTCO-058,NB-PTCO-179,PTFC102A1A0,PTFD102C1A0,PTFF102C1A0,NB-PTCO-178,NB-PTCO-148,NB-PTCO-029,PTF,NB-PTCO-149,PTFC102B1G0,PTFD101B1G0,PTFM102T1G0,PTFF102B1G0,NB-PTCO-142,NB-PTCO-024,NB-PTCO-159,PTFF101C1G0,PTFF102T1A0,PTFF,NB-PTCO-037,NB-PTCO-158,PTFC,PTFD,PTFC101A1G0,PTFD101A1A0,PTFM,PTFC101C1A0,PTFD101T1A0,NB-PTCO-151,PTFD102C1G0,NB-PTCO-150,NB-PTCO-032,NB-PTCO-153,NB-PTCO-152,PTFM102A1G0,NB-PTCO-155,PTFF102A1A0,NB-PTCO-154,PTFC101T1G0,NB-PTCO-157,PTFM102C1A0,NB-PTCO-035,NB-PTCO-156
电子商城
品牌:顺络
品类:Multilayer Chip Temp Sensing NTC Thermistor
价格:¥0.2063
现货: 7,495
品牌:顺络
品类:Multilayer Chip Temp Sensing NTC Thermistor
价格:¥0.1250
现货: 5,000
现货市场
服务
可定制温度范围-230℃~1150℃、精度可达±0.1°C;支持NTC传感器、PTC传感器、数字式温度传感器、热电堆温度传感器的额定量程和输出/外形尺寸/工作温度范围等参数定制。
提交需求>
可定制烧结NdFeB磁铁的剩磁最高1.45T,易加工成各种尺寸。充磁方向:径向充磁、轴向充磁、辐射充磁等;镀层:Zn、Sn、Ni、电泳等,最高工作温度220℃。
最小起订量: 1 提交需求>
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