LTST-S270TGKT SMD LED Takardar Bayani - Duban Gefe - Kore 530nm - 3.2V - 76mW - Takardar Fasaha ta Hausa

1. Bayyani Game da Samfur

LTST-S270TGKT wata babbar LED ce mai haske mai ƙarfi, mai duban gefe (SMD) wacce aka ƙera don aikace-aikacen lantarki na zamani waɗanda ke buƙatar haske mai ƙarfi da inganci. Wannan ɓangaren yana amfani da ingantaccen guntu na Indium Gallium Nitride (InGaN), wanda aka sani da ingantaccen haske da kwanciyar hankali. Babban aikin wannan LED shine samar da ingantaccen tushen hasken kore a cikin fakitin da aka inganta don tsarin haɗawa ta atomatik. Ƙirar fitar haske daga gefe tana da fa'ida musamman ga aikace-aikace inda ake buƙatar fitar da haske a gefe maimakon kai tsaye zuwa saman da aka ɗora, kamar a cikin allunan hasken gefe, alamomin yanayin akan na'urori sirara, ko hasken baya don maɓallan membrane.

An ƙera wannan LED a matsayin "samfurin kore," ma'ana tana bin umarnin RoHS (Ƙuntata Abubuwa Masu Haɗari), tare da tabbatar da cewa ba ta ƙunshi abubuwa kamar gubar, mercury, da cadmium ba. Wannan ya sa ta dace da amfani a cikin na'urorin lantarki na masu amfani, cikin motoci, allunan sarrafa masana'antu, da sauran aikace-aikace masu ƙaƙƙarfan ƙa'idodin muhalli da aminci. An tattara kayan a kan tef ɗin 8mm da aka nannade akan reels 7-inch, wanda ya yi daidai da ƙa'idodin EIA (Ƙungiyar Masana'antu ta Lantarki), wanda ke tabbatar da dacewa da injunan ɗauka da sanyawa masu sauri da ake amfani da su wajen samarwa mai yawa.

2. Zurfin Fahimtar Ma'auni na Fasaha

2.1 Matsakaicin Matsakaicin Matsakaici

Matsakaicin Matsakaicin Matsakaici yana ayyana iyakokin damuwa waɗanda za su iya haifar da lalacewa na dindindin ga na'urar. Ga LTST-S270TGKT, an ƙayyade waɗannan a yanayin zafi (Ta) na 25°C. Matsakaicin ci gaba na DC na gaba shine 20 mA. Wucewa wannan halin yanzu na iya haifar da yawan zafi, wanda zai lalata kayan semiconductor da rage tsawon rayuwar LED. Na'urar na iya ɗaukar mafi girman Ƙarfin Gaba na Kololuwa na 100 mA, amma kawai a ƙarƙashin yanayin bugun jini tare da tsarin aiki na 1/10 mai tsauri da faɗin bugun jini na 0.1ms. Wannan ƙima yana da mahimmanci ga aikace-aikacen da suka haɗa da walƙiya mai gajeriyar lokaci, mai ƙarfi.

Iyakar ɓarnawar wutar lantarki shine 76 mW. Wannan ma'auni, tare da juriyar zafi na fakitin da PCB, yana ƙayyade matsakaicin halin yanzu da aka yarda da shi a ƙarƙashin yanayi daban-daban. Kewayon Yanayin Aiki daga -20°C zuwa +80°C, kuma Kewayon Yanayin Ajiya daga -30°C zuwa +100°C. Waɗannan kewayon suna tabbatar da ingancin injiniya da sinadarai na LED yayin amfani da lokutan rashin aiki. Ma'auni mai mahimmanci don haɗawa shine Yanayin Gyarar Infrared, wanda ke ba da damar fallasa zuwa kololuwar zafin jiki na 260°C na matsakaicin dakika 10, yana sa ya dace da hanyoyin gyarar reflow marasa gubar (Pb-free).

2.2 Halayen Lantarki da Na'urar Gani

Ana auna Halayen Lantarki da Na'urar Gani a Ta=25°C da halin yanzu na aiki (IF) na 20 mA, wanda shine daidaitaccen yanayin gwaji. Ƙarfin Hasken (Iv) yana da faɗi daga mafi ƙanƙanta na 71.0 mcd zuwa matsakaicin 450.0 mcd, tare da ƙimar al'ada da aka bayar don tunani. Ana sarrafa wannan bambance-bambance ta hanyar tsarin binning (daki-daki daga baya). Ana auna ƙarfin ta amfani da firikwensin da aka tace don dacewa da lanƙwasa amsawar ido na CIE photopic, yana tabbatar da cewa ƙimar tana da alaƙa da hasken haske na ɗan adam.

Kusurwar Dubawa (2θ1/2) shine digiri 130. Wannan shine cikakken kusurwar da ƙarfin haske ya faɗi zuwa rabin ƙimarsa a tsakiyar axis (digiri 0). Faɗin kusurwar dubawa irin wannan siffa ce ta LEDs masu duban gefe kuma tana ba da haske mai faɗi, mai watsewa. Tsawon Tsawon Tsawon Tsawon (λP) shine 530 nm, kuma Tsawon Tsawon Tsawon (λd) shine 525 nm. Tsawon tsawon tsawon shine madaidaicin madaidaicin ƙarfin haske a cikin bakan da aka fitar, yayin da tsawon tsawon tsawon shine tsawon tsawon tsawon da idon ɗan adam ya gane wanda ke ayyana launi. Ƙananan bambanci yana nuna launin kore mai tsafta. Tsawon Tsawon Tsawon Tsawon (Δλ) shine 35 nm, yana bayyana tsaftar bakan ko faɗin hasken da aka fitar.

A fuskar lantarki, Ƙarfin Lantarki na Gaba (VF) ya bambanta daga 2.80V zuwa 3.60V, tare da ƙimar al'ada na 3.20V a 20mA. Wannan ma'auni ne mai mahimmanci don ƙirar da'ira, saboda yana ƙayyade raguwar ƙarfin lantarki a kan LED da ƙimar resistor mai iyakancewa halin yanzu. An ƙayyade Halin Yanzu na Baya (IR) a matsayin matsakaicin 10 μA lokacin da aka yi amfani da Ƙarfin Lantarki na Baya (VR) na 5V. An bayyana a sarari cewa ba a ƙera na'urar don aikin baya ba; wannan gwajin don siffanta yoyewa ne kawai.

3. Bayanin Tsarin Binning

Don tabbatar da daidaito a cikin samarwa mai yawa, ana rarraba LEDs zuwa kwandon shara bisa mahimman ma'auni. LTST-S270TGKT yana amfani da tsarin binning mai girma uku.

3.1 Binning na Ƙarfin Lantarki na Gaba

Ana yiwa kwandon shara na Ƙarfin Lantarki na Gaba lakabi D7 zuwa D10, kowanne yana ɗaukar kewayon 0.2V daga 2.80V zuwa 3.60V. Haƙuri a cikin kowane kwandon shara shine +/-0.1V. Masu ƙira za su iya zaɓar takamaiman kwandon shara don samun ingantaccen sarrafa raguwar ƙarfin lantarki a cikin da'irar su, wanda yake da mahimmanci don sarrafa wutar lantarki da tabbatar da daidaiton haske lokacin da aka haɗa LEDs da yawa a jere.

3.2 Binning na Ƙarfin Hasken

Ana yiwa kwandon shara na Ƙarfin Hasken lakabi Q, R, S, da T. Kwandon shara Q ya ƙunshi 71.0-112.0 mcd, kuma Kwandon shara T ya ƙunshi mafi girman kewayon 280.0-450.0 mcd. Haƙuri akan kowane kwandon shara na ƙarfin haske shine +/-15%. Wannan yana ba masu ƙira damar zaɓar LEDs masu dacewa da buƙatun hasken aikace-aikacensu, daga alamomin ƙarancin wutar lantarki zuwa fitilun yanayi masu haske.

3.3 Binning na Tsawon Tsawon Tsawon

Ana yiwa kwandon shara na Tsawon Tsawon Tsawon lakabi AP (520.0-525.0 nm), AQ (525.0-530.0 nm), da AR (530.0-535.0 nm). Haƙuri ga kowane kwandon shara shine mai tsauri +/- 1nm. Wannan zaɓin launi mai daidaito yana da mahimmanci ga aikace-aikace inda daidaiton launi ke da mahimmanci, kamar a cikin nuni na LED da yawa ko aikace-aikacen daidaita launi.

4. Bincike na Lanƙwasa Ayyuka

Yayin da PDF ke nuni zuwa lanƙwasa halayen lantarki/na'urar gani na al'ada, ba a bayar da takamaiman jadawali don IV (Halin Yanzu da Ƙarfin Lantarki), ƙarfin haske na dangi da zafin jiki, da rarraba bakan a cikin rubutun da aka ciro. Yawanci, irin waɗannan lanƙwasa za su nuna abubuwa masu zuwa:

Lanƙwasa IV zai nuna alaƙar ma'auni tsakanin ƙarfin lantarki na gaba da halin yanzu, yana nuna ƙarfin lantarki na kunna da juriya mai ƙarfi. Lanƙwasa ƙarfin haske na dangi da yanayin zafin jiki zai nuna alaƙa mara kyau; yayin da zafin jiki ya ƙaru, fitar da haske gabaɗaya yana raguwa. Wannan siffa ce ta asali na tushen haske na semiconductor kuma dole ne a yi la'akari da ita a cikin sarrafa zafi. Jadawalin rarraba bakan zai tsara ƙarfin haske da tsawon tsawon tsawon, yana nuna kololuwa a ko kusa da 530 nm tare da ƙayyadaddun rabin faɗin 35 nm, yana tabbatar da fitar da launin kore.

5. Bayanin Injiniya da Tattarawa

An sanya LED a cikin daidaitaccen fakitin SMD. Cikakkun ma'auni (tsayi, faɗi, tsayi) an yi cikakken bayani a cikin zanen ma'auni na fakitin da aka ambata a cikin takardar bayani. Muhimman siffofi na wannan fakitin mai duban gefe sun haɗa da ruwan tabarau da aka ƙera wanda ke jagorantar fitar da haske daga gefen ɓangaren. Takardar bayani ta haɗa da ma'auni na gidan gyarawa da aka ba da shawarar da jagorar gyarar da aka ba da shawarar don tabbatar da ingantaccen samuwar haɗin gwiwa da kwanciyar hankali na injiniya yayin aikin reflow. Ana nuna polarity ta hanyar alamar fakitin ko ganewar cathode/anode, wanda ke da mahimmanci don daidaitaccen alkibla yayin haɗawa don hana karkatar da baya.

6. Jagororin Gyarawa da Haɗawa

6.1 Bayanin Reflow Reflow

An ba da shawarar Bayanin Reflow na Infrared (IR) don hanyoyin marasa gubar. Wannan bayanin yawanci ya haɗa da yankuna da yawa: dumama, jika, reflow, da sanyaya. Muhimman ma'auni sune kololuwar zafin jiki ba wanda ya wuce 260°C ba da lokacin da ya wuce ruwa (misali, 217°C) na kusan dakika 60-90, tare da lokacin a kololuwar zafin jiki an iyakance shi zuwa matsakaicin dakika 10. Yin bin wannan bayanin yana da mahimmanci don hana girgizar zafi, ɓarkewar fage, ko lalata ruwan tabarau na epoxy na LED da haɗin waya na ciki.

6.2 Ajiya da Gudanarwa

LEDs na'urori ne masu kula da danshi. Idan ainihin jakar kariya ta danshi mai rufaffiyar tare da busasshiyar abu ba a buɗe ba, yakamata a adana su a ≤30°C da ≤90% Danshi na Dangi (RH) kuma a yi amfani da su cikin shekara guda. Da zarar an buɗe jakar, yanayin ajiya bai kamata ya wuce 30°C da 60% RH ba. Yakamata a gasa ɓangarorin da aka fallasa zuwa yanayin danshi na fiye da mako guda a kusan 60°C na aƙalla sa'o'i 20 kafin gyarawa don fitar da danshin da aka sha da hana "popcorning" yayin reflow.

6.3 Tsaftacewa

Idan tsaftacewa ya zama dole bayan gyarawa, yakamata a yi amfani da kaushi da aka ƙayyade kawai. Takardar bayani ta ba da shawarar nutsar da LED a cikin barasa na ethyl ko isopropyl a yanayin zafi na al'ada na ƙasa da minti ɗaya. Sinadarai masu tsauri ko waɗanda ba a bayyana ba na iya lalata fakitin filastik, haifar da canza launi, fashewa, ko rage fitar da haske.

6.4 Kula da Zubar da Lantarki (ESD)

LED yana da hankali ga zubar da lantarki. Ana ba da shawarar yin amfani da abin wuya ko safofin hannu masu hana tsayayye lokacin sarrafawa. Duk kayan aiki, gami da gwangwani na gyarawa da injunan sanyawa, dole ne a kafa su yadda ya kamata don hana abubuwan ESD waɗanda za su iya lalata ko lalata haɗin gwiwar semiconductor.

7. Bayanin Tattarawa da Oda

Daidaitaccen tattarawa shine tef ɗin 8mm mai ɗaukar kaya akan reels diamita 7-inch (178mm). Kowace reel tana ƙunshe da guda 4000. Don adadin ƙasa da cikakken reel, mafi ƙarancin adadin tattarawa na guda 500 yana samuwa ga sauran. Ƙa'idodin tef da reel sun yi daidai da ƙa'idodin ANSI/EIA-481, suna tabbatar da dacewa da na'urorin ciyarwa ta atomatik. Tef ɗin yana da hatimin murfi don kare ɓangarorin, kuma matsakaicin adadin ɓangarorin da suka ɓace a jere (aljihunan fanko) a cikin tef ɗin shine biyu.

8. Shawarwari na Aikace-aikace

8.1 Yanayin Aikace-aikace na Al'ada

Wannan LED kore mai duban gefe ya dace da aikace-aikace iri-iri: Alamomin yanayi akan na'urorin lantarki na masu amfani (hanyoyin sadarwa, firinta, masu caji), hasken baya don maɓallan sirara da maɓallan maɓalli, hasken gefe don allunan ado ko alamomi, kuma a matsayin tushe a cikin masu keɓancewar gani ko firikwensin gani inda fitarwa daga gefe ke da fa'ida. Daidaitawar RoHS tana sa ya dace da kasuwanni na duniya.

8.2 Abubuwan Tunani na Ƙira

Ƙirar Da'ira: Resistor mai iyakancewa halin yanzu ya zama dole. Ana iya ƙididdige ƙimarsa ta amfani da Dokar Ohm: R = (Vsupply - VF) / IF. Yi amfani da matsakaicin VF daga takardar bayani (3.60V) don ƙirar mafi munin yanayi don tabbatar da cewa halin yanzu bai wuce 20mA ba. Misali, tare da samar da 5V: R = (5V - 3.6V) / 0.02A = 70 Ohms. Daidaitaccen resistor 68 ko 75 Ohm zai dace.

Gudanar da Zafi: Ko da yake ɓarnawar wutar lantarki ƙanƙanta ce, daidaitaccen shimfidar PCB yana da mahimmanci. Tabbatar da isasshen yanki na tagulla a kusa da gidajen gyarawa na LED don zama mai sanyaya zafi, musamman idan ana aiki a yanayin zafi mai girma ko kusa da matsakaicin halin yanzu.

Ƙirar Gani: Yi la'akari da kusurwar dubawa na digiri 130. Don aikace-aikacen da ke buƙatar ƙara mayar da hankali kan katako, ruwan tabarau na waje ko jagororin haske na iya zama dole. Yanayin duban gefe yana nufin babban fitar da haske yana layi daya da jirgin PCB.

9. Kwatancen Fasaha da Bambance-bambance

Idan aka kwatanta da daidaitattun LEDs masu fitarwa sama, babban bambancin LTST-S270TGKT shine ƙirar gani ta fitarwa daga gefe, wanda ke magance matsalolin sarari a cikin na'urori masu sirara sosai. Idan aka kwatanta da sauran LEDs masu fitarwa daga gefe, fa'idodinsa sun haɗa da amfani da ingantaccen guntu na InGaN don fitarwa mai haske, ingantaccen tsarin binning don daidaiton launi da ƙarfi, da bayyananniyar dacewa tare da ƙaƙƙarfan bayanan reflow na IR marasa gubar (kololuwa 260°C), wanda shine buƙata don haɗawar lantarki na zamani.

10. Tambayoyin da ake yawan yi (Dangane da Ma'auni na Fasaha)

Q: Shin zan iya tuƙa wannan LED tare da samar da 3.3V ba tare da resistor ba?

A: A'a. Ko da ƙarfin lantarki yana kusa da ƙarfin lantarki na gaba na al'ada (3.2V), ainihin VF na iya bambanta daga 2.8V zuwa 3.6V. Ba tare da resistor mai iyakancewa halin yanzu ba, halin yanzu zai iya zama mara sarrafawa kuma ya wuce matsakaicin ƙima, yana lalata LED. Koyaushe yi amfani da resistor na jere.

Q: Menene bambanci tsakanin Tsawon Tsawon Tsawon da Tsawon Tsawon Tsawon?

A: Tsawon Tsawon Tsawon shine madaidaicin madaidaicin ƙarfin fitarwa a cikin bakan. Tsawon Tsawon Tsawon ƙima ce da aka ƙididdige bisa fahimtar launi na ɗan adam (ginshiƙi na CIE) wanda ya fi wakiltar launin da aka gane. Sau da yawa suna kusa amma ba iri ɗaya ba.

Q: An ƙididdige LED don halin yanzu na ci gaba na 20mA. Shin zan iya gudanar da shi a 15mA don ya daɗe?

A: Ee, aiki ƙasa da matsakaicin halin yanzu da aka ƙididdige aikin gama gari ne don haɓaka amincin dogon lokaci da rage damuwa na zafi. Ƙarfin haske zai ragu daidai gwargwado, kamar yadda lanƙwasa ayyukan LED suka ƙayyade.

Q: Ta yaya zan fassara lambobin kwandon shara lokacin yin oda?

A> Za ka ƙayyade cikakken lambar ɓangaren LTST-S270TGKT tare da ƙarin lambobi don Ƙarfin Lantarki (misali D8), Ƙarfin Hasken (misali S), da Tsawon Tsawon Tsawon (misali AQ) kwandon shara idan kana buƙatar takamaiman matakan aiki. Tuntubi jagorar oda na masana'anta don ainihin tsari.

11. Misalin Amfani na Aiki

Yanayi: Ƙirar alamar yanayi don na'urar likita mai ɗaukuwa.

Na'urar tana buƙatar alamar "wuta a kunne/ a shirye" kore. Sarari yana da iyaka sosai a gefen tsaye na babban PCB. An zaɓi LED mai duban gefe kamar LTST-S270TGKT saboda ana iya ɗora shi akan babban allon, kuma an fitar da haskensa a kwance zuwa cikin jagorar haske mai sirara wanda ke kai shi zuwa ƙaramin taga akan murfin na'urar. Mai ƙira ya zaɓi kwandon shara D8 don ƙarfin lantarki (3.0-3.2V) da S don ƙarfin haske (180-280 mcd) don tabbatar da isasshen haske tare da ingantaccen ƙarfin wutar lantarki. An ƙayyade tsawon tsawon tsawon kwandon shara AQ (525-530 nm) don tabbatar da daidaitaccen launin kore da za a iya gane shi. Ƙirar ta haɗa da resistor mai iyakancewa halin yanzu na 100-ohm don tuƙa LED a kusan 18mA daga samar da ƙarfin lantarki na 5V, yana ba da gefen aminci ƙasa da matsakaicin 20mA. Shimfidar PCB ta haɗa da gidajen gyarawa na zafi kuma tana bin shimfidar gidan gyarawa da aka ba da shawarar don tabbatar da ingantaccen haɗawa yayin aikin reflow mara gubar.

12. Gabatarwar Ka'ida

Diodes Masu Fitar da Hasken (LEDs) na'urori ne na semiconductor waɗanda ke fitar da haske lokacin da wutar lantarki ta wuce ta cikin su. Ana kiran wannan al'amari electroluminescence. A cikin LTST-S270TGKT, yankin aiki an yi shi da Indium Gallium Nitride (InGaN). Lokacin da aka yi amfani da ƙarfin lantarki na gaba, electrons daga semiconductor na n-type da ramuka daga semiconductor na p-type ana shigar da su cikin yankin aiki. A can, sun sake haɗuwa, suna sakin makamashi a cikin nau'in photons (haske). Takamaiman tsawon tsawon tsawon (launi) na haske an ƙaddara shi ta hanyar makamashin bandgap na kayan InGaN, wanda aka ƙera ya zama kusan 2.34 eV, wanda yayi daidai da hasken kore (~530 nm). Fakitin mai duban gefe ya haɗa da ruwan tabarau na epoxy da aka ƙera wanda aka siffata don fitar da jagorantar hasken da aka samar daga gefen guntu, yana haɓaka ingantaccen fitar da gani don aikace-aikacensa.

13. Trends na Ci gaba

Yanayin a cikin SMD LEDs kamar wannan yana zuwa ga ingantaccen haske mafi girma (ƙarin fitar da haske a kowace watt na shigar da lantarki), wanda aka motsa ta hanyar inganta ƙirar guntu, girma na epitaxial, da ingancin fakitin. Hakanan akwai mai da hankali sosai kan ingantaccen daidaiton launi da ƙaƙƙarfan haƙuri na binning don biyan buƙatun nuni da aikace-aikacen haske. Ƙananan ƙira yana ci gaba, amma tare da shi, akwai ci gaba a cikin fakitin da ke ba da ingantaccen sarrafa zafi don ci gaba da aiki a mafi girman halayen tuƙi. Bugu da ƙari, dacewa tare da ƙarin hanyoyin haɗawa masu ƙarfi, kamar mafi girman yanayin reflow na zafi don masu gyarawa marasa gubar da reflow mai gefe biyu, ya kasance ma'auni mai mahimmanci na ƙira. Haɗa LEDs tare da da'irar sarrafawa akan jirgi (kamar direbobi na halin yanzu na akai-akai) cikin ƙarin hadaddun modules wani ci gaba ne na girma.