Ntawm cov ntawv ntim ntau yam, SMD ntim yog undoubtedly tus huab tais tam sim no. Raws li LEDinside qhov kev kwv yees, SMD txoj kev lag luam yuav txuas ntxiv mus txog xyoo 2024.
SMD Technical yam ntxwv
Qhov zoo tshaj plaws ntawm SMD thev naus laus zis yog nyob rau hauv nws cov miniaturization thiab lub teeb yuag. Nws tsis muaj qhov ntev ntev thiab tuaj yeem txuas ncaj qha rau ntawm qhov chaw ntawm PCB pawg thawj coj saib. Tsis tas li ntawd, SMD ntim muaj lub kaum sab xis pom dav dua (feem ntau tshaj 120 degrees), ua rau nws zoo tagnrho rau lub teeb rau backlights, vaj huam sib luag teeb, thiab ntau yam kev siv teeb pom kev zoo.
Common SMD Specifications
Hauv HengCai Electronics 'cov khoom lag luam, ntau lub hnub qub cov khoom lag luam yog kev lag luam- tus qauv:
SMD 2835: Qhov ntev yog 2.8mm x 3.5mm. Tam sim no tus huab tais ntawm tus nqi-kev ua tau zoo, nrog rau cov khoom siv hluav taws xob zoo heev, siv dav hauv cov raj, qhov muag teev, thiab lub teeb vaj huam sib luag.
SMD 5050: Qhov ntev yog 5.0mm x 5.0mm. Feem ntau encapsulates 3 chips sab hauv, nrog lub zog siab dua, feem ntau siv hauv LED strips thiab puv - xim modules.
SMD 3030 (EMC): Siv lub EMC bracket, nws khav theeb tshwj xeeb siab -kub tsis kam thiab tiv thaiv - daj, ua rau nws yog qhov kev xaiv sab saum toj rau sab nraum zoov teeb pom kev zoo thiab siab - fais fab taws teeb.
Vim li cas thiaj xaiv SMD?
Rau B2B cov neeg siv khoom, xaiv SMD txhais tau hais tias kev sib dhos ua tau zoo heev. Niaj hnub nimno SMT qhov chaw tso tshuab tuaj yeem nce kaum tawm txhiab lub ntsiab lus hauv ib teev, txo cov nqi zog rau cov chaw tsim hluav taws xob qis.
Kev Sib Tw Txuj Ci thiab Kev Tswj Xyuas Zoo rau LED Ntim Kev daws teeb meem
Thaum cov txheej txheem zoo li tus qauv, LED ntim sector yog fraught nrog cov teeb meem hauv kev xyaum.
Kev Tswj Kub Kub: Tus naj npawb Ib Killer ntawm Lub Teeb Decay
Thermal resistance yog ib qho tseem ceeb qhia txog kev ntim tshuab zoo. Yog tias cov cua sov nkag mus rau hauv cov nti, cov phosphor yuav carbonize, thiab lub bracket yuav oxidize, ua rau ib tug precipitous poob nyob rau hauv brightness. Cov kev daws teeb meem suav nrog optimizing thermal conductivity ntawm cov nyiaj muab tshuaj txhuam thiab txhim kho lub bracket tus qauv tsim.
Technical TIPS: Thaum tsim lub siab - lub zog LED ntim cov kev daws teeb meem, ua qhov tseem ceeb ntawm cov khoom siv hluav taws xob los yog EMC brackets. Txawm hais tias kim dua me ntsis, lawv cov coefficients ntawm thermal expansion yog sib xws nrog cov nti, txhim kho qhov ntev - lub sij hawm cia siab rau.
Hermeticity Challenge: Tiv thaiv "Tuag Teeb"
Sulfation yog lwm tus yeeb ncuab tseem ceeb ntawm LEDs. Yog hais tias leej faj nyob rau hauv cov huab cua nkag mus rau hauv lub encapsulating compound, nws reacts nrog cov nyiaj plating rau dub nyiaj sulfide, ua rau ib tug txo nyob rau hauv luminous flux. Qhov no xav kom peb kom ntseeg tau tias muaj ntau yam hermeticity thaum lub sij hawm encapsulation txheej txheem, thaum tib lub sij hawm xaiv los tiv thaiv - cov ntaub ntawv sulfur adhesive.
Xim Consistency Control
Ntau tus neeg siv khoom muaj teeb meem tshaj plaws los ntawm "xim txawv." Ib pawg yuav yog 3000K, thaum lub batch tom ntej zoo li 3200K. Qhov no tsuas yog kuaj cov phosphor deposition technology thiab binning peev xwm ntawm cov nroj tsuag encapsulation. Cov txheej txheem sib xyaw hmoov zoo tuaj yeem txhim kho cov txiaj ntsig tau zoo nyob rau hauv qhov kev txiav txim thib peb ntawm MacAdam Ellipse.
