LTST-C171KDWT SMD LED Takardar Bayani - Lensa Fari Mai Watsawa - AlInGaP Jan Chip - 30mA Na Gaba - 75mW Watsawar Wutar Lantarki - Takardar Fasaha ta Hausa

1. Bayyani Game da Samfur

LTST-C171KDWT na'urar LED ce mai hawa a saman (SMD) wacce aka tsara don haɗa allon da'ira (PCB) ta atomatik. Tana cikin dangin ƙananan sassa waɗanda aka ƙera don aikace-aikacen da ke da ƙarancin sarari a cikin ɗimbin kayan lantarki na zamani.

1.1 Fa'idodi na Asali da Kasuwar Da Ake Nufi

Wannan LED tana amfani da ƙwaƙƙwaran semiconductor na AlInGaP (Aluminum Indium Gallium Phosphide) mai haske sosai don samar da hasken ja, wanda daga baya ake watsawa ta hanyar lensa fari. Wannan haɗin yana nufin samun ƙarfin haske mai girma tare da faɗin kusurwar kallo mai daidaito. Manyan fa'idodinsa sun haɗa da dacewa da injinan ɗauka da sanyawa na atomatik da kuma hanyoyin gyarar IR reflow, waɗanda suke daidaitattun a cikin masana'antar kayan lantarki masu yawa. Na'urar tana bin ka'idojin RoHS, tana cika ƙa'idodin muhalli. Aikace-aikacen da ake nufi sun haɗa da sadarwa (misali wayoyin hannu), sarrafa ofis (misali kwamfutocin tebur, tsarin hanyoyin sadarwa), kayan amfanin gida, kayan aikin masana'antu, da takamaiman ayyukan haske kamar hasken baya na maɓalli/ keyboard, alamomin yanayi, ƙananan nuni, da fitilun sigina.

2. Bincike Mai zurfi na Sigogi na Fasaha

Fahimtar cikakkiyar sigogin lantarki da na gani yana da mahimmanci don ƙirar da'ira mai dogaro da tsinkayar aiki.

2.1 Matsakaicin Matsakaicin Matsayi

Waɗannan ƙididdiga suna ayyana iyakokin damuwa waɗanda sama da su lalacewa na dindindin na iya faruwa. An ƙayyade su a yanayin zafin muhalli (Ta) na 25°C. Matsakaicin ci gaba na DC na gaba (IF) shine 30 mA. Ana iya yarda da mafi girman Ƙarfin Gaba na Kololuwa na 80 mA amma kawai a ƙarƙashin yanayin bugun jini tare da aikin 1/10 da faɗin bugun 0.1 ms, mai amfani don ɗan gajeren sigina mai ƙarfi. Matsakaicin ƙarfin da na'urar za ta iya watsawa shine 75 mW. Matsakaicin ƙarfin baya (VR) da ake iya yarda da shi shine 5 V; wuce wannan zai iya rushe haɗin PN na LED. Yankunan zafin aiki da ajiya sune -30°C zuwa +85°C da -40°C zuwa +85°C, bi da bi.

2.2 Halayen Lantarki da Gani

Waɗannan sune sigogin aiki na yau da kullun da aka auna a Ta=25°C da daidaitaccen gwajin gwaji (IF) na 20 mA. Ƙarfin Hasken (Iv) yana da faɗi daga mafi ƙarancin 11.2 mcd (millicandela) zuwa matsakaicin 45.0 mcd, tare da takamaiman ƙimomin da aka ƙaddara ta hanyar tsarin binning. Kusurwar Kallo (2θ1/2) ita ce digiri 130, yana nuna tsarin fitarwa mai faɗi sosai wanda ya dace da hasken yanki ko alamomin da ake buƙatar ganin su daga wuraren da ba a kan axis ba. Tsawon Tsawon Tsawon (λd), wanda ke ayyana launin da ake gani, ya bambanta daga 630 nm zuwa 660 nm, yana sanya shi a cikin yankin ja na bakan. Matsakaicin Ƙarfin Gaba (VF) yana bambanta daga 1.6 V zuwa 2.4 V a 20 mA. Ƙarfin Baya (IR) yawanci yana da ƙasa sosai, tare da matsakaicin 10 µA a cikakken 5 V na baya.

3. Bayanin Tsarin Binning

Don tabbatar da daidaito a cikin samarwa, ana rarraba LED zuwa rukuni na aiki ko \"kwantena.\"

3.1 Binning Ƙarfin Hasken

LTST-C171KDWT yana amfani da tsarin binning dangane da ƙarfin haske da aka auna a 20 mA. An ayyana kwantena kamar haka: Lambar Kwano \"L\" ta ƙunshi 11.2 zuwa 18.0 mcd, Kwano \"M\" ya ƙunshi 18.0 zuwa 28.0 mcd, kuma Kwano \"N\" ya ƙunshi 28.0 zuwa 45.0 mcd. Ana amfani da juzu'i na +/-15% ga ƙarfin a cikin kowane kwano. Dole ne masu ƙira su ƙayyade kwandon da ake buƙata lokacin yin oda don tabbatar da daidaiton haske da ake buƙata don aikace-aikacensu, musamman lokacin amfani da LED da yawa a cikin jeri.

4. Binciken Lanƙwasa Aiki

Yayin da aka ambaci takamaiman lanƙwasa masu hoto a cikin takardar bayani, abubuwan da suke nufi suna daidaitacce. Lanƙwasa Ƙarfin Gaba da Ƙarfin Gaba (I-V) yana nuna alaƙar ma'auni na yau da kullun na diode. Lanƙwasa Ƙarfin Hasken da Ƙarfin Gaba yana nuna yadda fitar da haske ke ƙaruwa tare da wutar lantarki, yawanci a cikin yanki mai kusa da layi a kusa da wurin aiki da aka ba da shawarar. Lanƙwasa Ƙarfin Hasken da Yanayin Yanayi yana da mahimmanci, saboda fitar da LED gabaɗaya yana raguwa yayin da zafin jiki ya tashi; fahimtar wannan raguwa yana da mahimmanci don ƙira waɗanda ke aiki a cikin yanayin zafi mai girma. Jadadin Rarraba Spectral zai nuna tattarawar hasken da aka fitar a kusa da kololuwar tsayin kusan 650 nm.

5. Bayanin Injiniya da Marufi

5.1 Ma'auni na Jiki da Polarity

LED yana zuwa a cikin daidaitaccen ƙafar fakitin EIA. An ba da ainihin tsawon, faɗi, da tsayin ma'auni a cikin milimita tare da matsakaicin juzu'i na ±0.1 mm. Bangaren yana da alamar polarity, mai mahimmanci don daidaitaccen alkibla yayin haɗawa. Ana yin alama da cathode, sau da yawa ta hanyar launin kore a gefen da ya dace na fakitin ko tsaga a cikin jikin filastik.

5.2 Tsarin Pad na PCB da Aka Ba da Shawara

An ba da shawarar ƙirar ƙirar ƙasa don tabbatar da ingantaccen gyarawa da ingantaccen kwanciyar hankali na injiniya. Wannan tsari yana ƙayyade girman da siffar tagulla akan PCB, gami da duk wani taimako na zafi ko ma'anar maskar gyarawa, don inganta samuwar haɗin gyarawa yayin reflow.

5.3 Marufi na Tepe da Reel

Don haɗawa ta atomatik, ana ba da LED akan tepe mai ɗaukar kaya mai faɗin 8mm wanda aka nannade akan reels mai diamita 7-inch (178 mm). Kowane reel yana ƙunshe da guda 3000. Marufi yana bin ƙa'idodin ANSI/EIA 481. Manyan bayanan sun haɗa da: ana rufe aljihun tepe mara komai da tepe mai rufi, mafi ƙarancin adadin oda don ragowar shine guda 500, kuma ana ba da izinin mafi ƙarancin abubuwan da suka ɓace biyu a jere a kowane reel.

6. Jagororin Gyarawa da Haɗawa

6.1 Yanayin Gyarar IR Reflow

Na'urar ta cancanci hanyoyin gyarawa marasa gubar (Pb-free). Matsakaicin zafin reflow da aka ba da shawarar shine 260°C, kuma lokacin da ya wuce wannan matsakaicin zafin bai kamata ya wuce dakika 10 ba. An ba da shawarar cikakken bayanin yanayin zafi gami da matakan riga-kafi (misali, 150-200°C har zuwa dakika 120) don hana girgizar zafi da tabbatar da ingantaccen aikin man gyarawa. Takardar bayani tana nuni da ƙa'idodin JEDEC a matsayin tushen haɓaka bayanin martaba, yana mai da hankali cewa dole ne a siffanta bayanin ƙarshe don takamaiman ƙirar PCB, man gyarawa, da tanda da aka yi amfani da su.

6.2 Ajiya da Gudanarwa

LED suna da damuwa da danshi. Lokacin da aka rufe su a cikin jakar su ta asali mai hana danshi tare da busasshiyar abu, yakamata a adana su a ≤ 30°C da ≤ 90% RH kuma a yi amfani da su cikin shekara guda. Da zarar an buɗe jakar, \"rayuwar bene\" tana da iyaka. Don MSL 2a (Matakin Hankali na Danshi 2a), yakamata a yi wa abubuwan IR-reflow cikin sa'o'i 672 (kwanaki 28) na bayyanawa ga yanayin masana'anta na yau da kullun (≤ 30°C / 60% RH). Don dogon bayyanawa, ana buƙatar gasa a kusan 60°C na aƙalla sa'o'i 20 kafin gyarawa don cire danshin da aka sha da hana lalacewar \"popcorning\" yayin reflow. Ana buƙatar yin taka tsantsan game da fitar da wutar lantarki (ESD); ana ba da shawarar amfani da igiyoyin wuyan hannu da tashoshi na aiki masu tushe.

6.3 Tsaftacewa

Idan ana buƙatar tsaftacewa bayan gyarawa, kawai yakamata a yi amfani da takamaiman kaushi. Nitsar LED a cikin barasa na ethyl ko barasa na isopropyl a zafin daki na ƙasa da minti ɗaya yana da kyau. Sinadarai waɗanda ba a ƙayyade ba ko masu tsauri na iya lalata lens ɗin filastik ko fakitin.

7. Bayanan Aikace-aikace da Abubuwan Ƙira

7.1 Ƙirar Da'ira Mai Tuƙi

LED na'urori ne masu tuƙi na yanzu. Don tabbatar da daidaiton haske da hana cin wutar lantarki, ana ba da shawarar sosai don amfani da resistor mai iyakancewa na jeri don kowane LED, ko da lokacin da aka haɗa LED da yawa a layi daya zuwa tushen wutar lantarki. Ana ƙididdige ƙimar resistor (R) ta amfani da Dokar Ohm: R = (Vcc - VF) / IF, inda Vcc shine ƙarfin wutar lantarki, VF shine ƙarfin gaba na LED (yi amfani da matsakaicin ƙimar daga takardar bayani don dogaro), kuma IF shine ƙarfin gaba da ake so. Ba a ba da shawarar tuƙi LED kai tsaye daga tushen wutar lantarki ba tare da daidaita wutar lantarki ba saboda zai iya haifar da guduwar zafi da gazawar na'urar.

7.2 Gudanar da Zafi

Ko da yake watsawar wutar lantarki tana da ƙasa kaɗan (75 mW matsakaici), ingantaccen sarrafa zafi akan PCB yana da mahimmanci har yanzu don dogon dogaro da kiyaye ƙarfin haske. Tabbatar da isasshen yankin tagulla a kusa da kushin zafi na LED (idan ya dace) da iskar iska ta gabaɗaya na PCB yana taimakawa wajen watsar da zafi, musamman a aikace-aikacen yanayin zafi mai girma ko lokacin tuƙi LED kusa da matsakaicin ƙimar wutar lantarki.

7.3 Iyakar Aikace-aikace da Iyakoki

Wannan LED an yi niyya ne don kayan lantarki na gabaɗaya. Takardar bayani a sarari tana gargadin kada a yi amfani da ita a cikin aikace-aikacen da ke da mahimmanci ga aminci inda gazawar za ta iya jefa rayuwa ko lafiya cikin haɗari—kamar su jirgin sama, sarrafa sufuri, na'urorin likita, ko tsarin tallafin rayuwa—ba tare da tuntuɓar juna da takamaiman cancanta ba.

8. Kwatancen Fasaha da Bambance-bambance

Babban abin da ya bambanta LTST-C171KDWT shine amfani da shi da ƙwaƙƙwaran AlInGaP tare da lensa fari mai watsawa. Idan aka kwatanta da na gargajiya GaAsP ko GaP jan LED, fasahar AlInGaP yawanci tana ba da inganci mafi girma da ingantaccen aiki akan zafi. Lensa fari mai watsawa yana ba da faɗin kusurwar kallo mai daidaito idan aka kwatanta da lensa mai tsabta ko ruwa mai tsabta, wanda sau da yawa yana da katako mai mai da hankali. Wannan ya sa ya fi dacewa da aikace-aikacen da ke buƙatar haske mai faɗi, mai laushi maimakon hasken haske mai jagora.

9. Tambayoyin da ake yawan yi (Dangane da Sigogi na Fasaha)

Q: Zan iya tuƙi wannan LED a 30 mA akai-akai?

A: Ee, 30 mA shine matsakaicin ƙimar ci gaba na DC na gaba. Don mafi kyawun tsawon rai, aiki a ɗan ƙasa da wannan matsakaicin, kamar a 20 mA (daidaitaccen yanayin gwaji), ana ba da shawarar sau da yawa.

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

A: Tsawon Tsawon Tsawon (λp) shine tsayin tsayi guda ɗaya wanda bakan fitarwa ya fi ƙarfi. Tsawon Tsawon Tsawon (λd) an samo shi ne daga ma'auni na launi akan jadawalin launi na CIE kuma yana wakiltar tsayin tsayi guda ɗaya wanda ya fi dacewa da launin hasken da ake gani. λd ya fi dacewa da ƙayyadaddun launi.

Q: Me yasa ake buƙatar resistor na jeri ko da don samar da wutar lantarki akai-akai?

A: Ƙarfin gaba (VF) na LED yana da juzu'i na masana'antu kuma yana raguwa tare da ƙaruwar zafin jiki. Tushen wutar lantarki akai-akai zai sa wutar lantarki ta ƙaru ba tare da kulawa ba yayin da LED ke dumama, wanda zai iya haifar da guduwar zafi. Resistor na jeri yana ba da martani mara kyau, yana daidaita wutar lantarki.

10. Ƙirar Aiki da Amfani da Hali

Hali: Ƙirar allon nuna yanayi don na'urar hanyar sadarwa.Allon yana buƙatar LED guda huɗu na yanayi ja iri ɗaya. Tsarin yana amfani da layin dogo na 5V. Matakan ƙira: 1) Zaɓi kwandon ƙarfin haske da ake buƙata (misali, Kwano \"M\" don 18-28 mcd). 2) Lissafa resistor na jeri. Ta amfani da matsakaicin VF na 2.4V da manufar IF na 20 mA: R = (5V - 2.4V) / 0.02A = 130 Ω. Ana iya amfani da mafi kusancin ƙimar daidaitaccen 130 Ω ko 150 Ω. 3) Ƙirar shimfidar PCB ta amfani da tsarin kushin da aka ba da shawarar, tabbatar da daidaitaccen daidaitawar polarity. 4) Ƙayyade bayanin martabar IR reflow bisa ga jagororin yayin haɗin PCB. 5) Bayan haɗawa, tabbatar da daidaiton ƙarfi a ƙarƙashin yanayin aiki.

11. Gabatarwar Ka'idar Aiki

LED diode ne na semiconductor. Lokacin da aka yi amfani da ƙarfin gaba a kan tashoshinsa (anode tabbatacce dangane da cathode), electrons daga semiconductor na n-type da ramuka daga semiconductor na p-type ana shigar da su cikin yanki mai aiki. Lokacin da waɗannan masu ɗaukar caji suka sake haɗuwa, ana sakin makamashi a cikin nau'in photons (haske). Takamaiman kayan semiconductor (AlInGaP a wannan yanayin) yana ƙayyade ƙarfin bandgap don haka tsayin tsayi (launi) na hasken da aka fitar. Lensa fari mai watsawa yana ƙunshe da barbashi masu watsawa waɗanda ke faɗaɗa fitar da haske na farko daga guntu, yana haifar da faɗin kusurwar kallo mai daidaito.

12. Trends na Fasaha

Gabaɗaya yanayin SMD LED yana zuwa ga inganci mafi girma (lumens da yawa a kowace watt), ingantaccen nuna launi, da ƙarin dogaro. Don LED irin na nuni, ƙananan ƙira yana ci gaba yayin kiyayewa ko ƙara haske. Hakanan ana mai da hankali kan faɗaɗa kewayon launuka da yanayin zafin launi da ake samu. Ana inganta hanyoyin masana'antu don cimma ƙarin juzu'i na binning, yana ba masu ƙira ingantaccen aiki mafi daidaito. Ƙoƙarin don mafi girman jurewar zafi da dacewa tare da hanyoyin gyarawa marasa gubar, masu zafi mai girma ya kasance babban abin da masana'antu ke mayar da hankali.