Cov roj carbon zaj duab xis ruaj khov resistor uas tsim los ntawm BEC yog ib qho kev nkag mus -theem passive hluav taws xob tivthaiv nrog tsis yog- tus nqi kho tau, tsim los ntawm kev tso cov yeeb yaj kiab nyias nyias ntawm cov pa roj carbon (graphite) mus rau ib qho insulating ceramic substrate. Nws yog qhov siv dav tshaj plaws thiab tus nqi- hom kev tiv thaiv zaj duab xis zoo, tsim los rau tsis yog- qhov tseeb, qis- mus rau - lub zog nruab nrab, thiab me me- ib puag ncig circuits uas yuav tsum muaj kev ua tau zoo (piv txwv li, kev sib tw dav dav, kev txwv tam sim no, hloov pauv). Nws ua lag luam tawm qhov tseeb, thermal stability, thiab tsis tshua muaj suab nrov rau ultra- tus nqi qis thiab yooj yim ntawm kev tsim khoom- ua rau nws yog ib qho tseem ceeb hauv cov khoom siv hluav taws xob, cov khoom siv hluav taws xob yooj yim, thiab cov haujlwm nyiam ua haujlwm.
Basic Parameters
|
Yam khoom |
Carbon zaj duab xis tsau resistor |
|
Kev tiv thaiv kab mob |
0.1Ω~100MΩ |
|
Rated zog |
1/6W~7W |
|
T/C |
± 350ppm /℃1500ppm / degree |
|
Ua siab ntev |
±2%. ±5%, ±10% |
|
Daim ntawv pov thawj |
RoHS, REACH |
|
Daim ntawv thov |
Cov khoom siv hluav taws xob, khoom siv hluav taws xob, khoom siv kho mob, kev siv hluav taws xob, khoom siv hluav taws xob |
Yam ntxwv
Substrate:Tsawg-rau- nruab nrab purity alumina (Al₂O₃) ceramic (los yog carbon core rau cov txheej txheem qub qub) - muab cov hluav taws xob rwb thaiv tsev yooj yim thiab thermal conductivity tsawg (tsuas yog rau qis- lub zog hluav taws xob hluav taws xob).
Resistive Txheej:Ib daim nyias nyias (5–20μm) zaj duab xis ntawm amorphous carbon / graphite tso ntawm thermal decomposition ntawm hydrocarbon gas (piv txwv li, methane) - zaj duab xis thickness thiab ceev teem lub hauv paus kuj; tsis siv cov alloys kim lossis oxides.
Trimming:Lub helical zawj yog txiav rau hauv cov yeeb yaj kiab carbon (txhim kho kho rau 99% ntawm cov qib, laser trimming rau tsawg ± 1% precision variants) kom ntsuas qhov ntsuas tsis kam rau lub hom phiaj kam rau ua - tshuab trimming qeeb dua tab sis nyob deb pheej yig dua laser.
Kev txiav txim siab:Basic npib tsib xee- tooj liab los yog tin- plated steel kawg lub kaus mom uas tsis muaj corrosion / barrier txheej (tus nqi tseem ceeb txiav) - haum nrog axial lead xov hlau (THT) (tseem ceeb tshaj plaws) los yog tin yooj yim -plated solder hu (SMD variants).
Txheej tiv thaiv:Nyias epoxy los yog phenolic resin txheej (vs. iav / iav-epoxy rau hlau / hlau oxide zaj duab xis) - tiv thaiv cov pa roj carbon zaj duab xis los ntawm cov plua plav me me / noo noo tab sis permeable rau cov av noo thiab cua sov tsawg- tiv taus. Laser- luam tawm tsis kam, kam rau ua, thiab kev ntsuas fais fab raug siv ntawm no (ntawm THT variants).
Txheej txheem ntau lawm
Ib feem ntawm Peb Cov Chaw Tsim Khoom
FAQ
Q1: Dab tsi kam rau ua thiab TCR qhov tseem ceeb yog tus qauv rau carbon film tsau resistors?
A1: Kev kam rau siab (precision) thiab TCR (Temperature Coefficient of Resistance) yog tus nqi
optimized-tsis nruj- cov kev xaiv qhov tseeb (kev txhob txwm ua lag luam rau tus nqi qis):
Ua siab ntev
± 5%: Qib Standard (feem ntau yog siv) - rau qhov yooj yim circuits uas me me kuj variations tsis muaj teeb meem.
± 10%: Tus nqi - qib optimized - rau qhov pheej yig tshaj tsis yog - circuits tseem ceeb (piv txwv li, cov khoom siv hluav taws xob pov tseg).
± 1%: Kev txiav txim tshwj xeeb nkaus xwb (tsis tshua muaj) - tsis raug nqi - zoo, raws li cov yeeb yaj kiab hlau yog qhov kev xaiv zoo dua rau kev ua siab ntev.
TCR: ± 150 → ± 600 ppm /℃(tsis zoo TCR yog qhov tseem ceeb) - tsis zoo thermal stability, lub ntsiab lus tsis kam hloov pauv nrog qhov kub thiab txias (xws li, 1kΩ resistor nrog ± 300 ppm /℃hloov los ntawm 0.3Ω tshaj 100℃kub viav vias).
Q2: Dab tsi yog qhov siab tshaj plaws kev khiav hauj lwm voltage rau ib tug carbon zaj duab xis ruaj resistor?
A2: Muaj peev xwm muaj peev xwm nruab nrab (pob / lub zog- nyob ntawm), derated proportionally nrog tam sim no / fais fab kos (tsis muaj siab-voltage tshwj xeeb qib): 100V (1/8W) → 500V (5W) - haum rau qis- mus rau - nruab nrab voltage 12V kev siv hluav taws xob / piv txwv).
Q3: Vim li cas cov pa roj carbon monoxide ruaj khov muaj suab nrov dua, thiab nws puas tseem ceeb?
A3: Carbon film resistors muaj suab nrov tam sim no (~-10dB ntawm 1kHz) vim hais tias cov amorphous carbon zaj duab xis muaj microscopic molecular khoob thiab irregularities-cov khoob no tsim me me voltage fluctuations (suab nrov) thaum tam sim no ntws los ntawm tus resistor.
Lub suab nrov tsuas yog qhov tseem ceeb rau qhov qis- theem teeb liab txoj hauv kev (xws li, siab-kawg suab, kho mob ECG/EKG, sensor biasing)- nyob rau hauv cov circuits no, carbon zaj duab xis suab nrov yuav ua rau cov teeb liab tsis muaj zog thiab kev ua haujlwm tsis zoo. Rau qhov yooj yim circuits (LED tam sim no limiting, transistor biasing, switching), teeb liab theem siab, thiab suab nrov yog negligible kiag li.
Cim npe nrov: Tuam Tshoj carbon zaj duab xis taag resistor manufacturers, lwm tus neeg, Hoobkas
