LTST-S320TGKT SMD LED Takardar Bayani - Duba Gege - 3.2x2.0x1.1mm - 3.2V - 76mW - Kore - Takardar Fasaha ta Turanci

1. Bayyani Game da Samfur

LTST-S320TGKT wata babbar na'ura ce mai aiki mai ƙarfi, mai duban gefe (SMD) wadda ke fitar da haske (LED). Tana amfani da ingantaccen guntu na Indium Gallium Nitride (InGaN) don samar da hasken kore mai haske. An ƙera wannan kayan musamman don aikace-aikacen da ake buƙatar hasken daga gefen kayan, maimakon daga saman. Ƙananan fakitin sa na EIA da kuma fakitin tef da reel sun sa ya zama mai dacewa don manyan ayyukan haɗawa ta atomatik da aka saba da su a cikin masana'antar lantarki na zamani.

Muhimman fa'idodin wannan LED sun haɗa da bin ka'idojin RoHS (Ƙuntata Abubuwa Masu Haɗari), wanda ya sanya shi a matsayin samfurin kore. Yana da ruwa mai tsabta wanda ke ƙara fitar da haske da firam ɗin gubar da aka yi da tin don ingantaccen aikin gyarar. Na'urar tana da cikakkiyar dacewa da hanyoyin gyarar IR reflow, wanda shine ma'auni don haɗa allunan fasahar haɗawa ta saman (SMT). Ƙirar sa tana tabbatar da dacewa da kayan aikin ɗauka da sanyawa ta atomatik, yana sauƙaƙe layin samarwa.

2. Zurfin Bayani na Ƙayyadaddun Fasaha

2.1 Matsakaicin Matsakaicin Matsayi

Waɗannan matsayi suna bayyana iyakokin da za su iya haifar da lalacewa ta dindindin ga na'urar. Ba a ba da shawarar aiki da LED a ƙarƙashin waɗannan yanayi ba. Matsakaicin ɓarnar wutar lantarki shine milliwatts 76 (mW) a yanayin zafin muhalli (Ta) na 25°C. Halin gaba na DC bai kamata ya wuce 20 mA ba a ci gaba. Don aikin bugun jini, ana iya yarda da matsakaicin halin gaba na 100 mA a ƙarƙashin tsarin aiki na 1/10 tare da faɗin bugun jini na millis 0.1. Na'urar na iya aiki a cikin kewayon zafin muhalli daga -20°C zuwa +80°C kuma ana iya adana ta a cikin yanayin zafi daga -30°C zuwa +100°C.

2.2 Halayen Lantarki da Hasken Gani

An auna a daidaitaccen yanayin gwaji na Ta=25°C da halin gaba (IF) na 20 mA, LED tana nuna mahimman ma'auni na aikin sa. Ƙarfin haske (Iv) yana da ƙimar al'ada na millicandelas 150 (mcd), tare da mafi ƙarancin ƙayyadaddun ƙimar 71.0 mcd. Wannan ma'auni yana ƙididdige hasken da ake gani na hasken da aka fitar. Kusurwar kallo (2θ1/2), wanda aka ayyana shi azaman cikakkiyar kusurwar da ƙarfin ya ragu zuwa rabin ƙimar axial, shine digiri 130, yana ba da tsarin haske mai faɗi wanda ya dace da hasken gefe.

Halayen bakan suna bayyana ta hanyar tsayin tsayin fitarwa (λP) na nanometers 530 (nm) da tsayin tsayin (λd) na 525 nm. Ramin rabin layin bakan (Δλ) shine 35 nm, yana nuna tsaftar launin kore. A cikin lantarki, ƙarfin lantarki na gaba (VF) yawanci yana auna volts 3.2, tare da kewayon daga 2.8V zuwa 3.6V. An tabbatar da halin baya (IR) ya zama microamperes 10 (μA) ko ƙasa da haka lokacin da aka yi amfani da ƙarfin lantarki na baya (VR) na 5V, ko da yake ba a ƙera na'urar don aikin baya-baya ba.

3. Bayanin Tsarin Rarraba

Don tabbatar da daidaito a cikin samarwa mai yawa, ana rarraba LED zuwa kwandon shara bisa mahimman ma'auni. Wannan yana ba masu ƙira damar zaɓar sassa waɗanda suka cika takamaiman buƙatun jurewa don aikace-aikacen su.

3.1 Rarraba Ƙarfin Lantarki na Gaba

Ana rarraba ƙarfin lantarki na gaba a cikin matakan 0.2V. Lambobin kwandon shara D7, D8, D9, da D10 sun dace da kewayon ƙarfin lantarki na 2.80-3.00V, 3.00-3.20V, 3.20-3.40V, da 3.40-3.60V, bi da bi, kowannensu yana da jurewar ±0.1V.

3.2 Rarraba Ƙarfin Hasken Gani

An rarraba ƙarfin hasken gani zuwa kwandon shara Q, R, da S. Kwandon shara Q ya ƙunshi 71.0-112.0 mcd, Kwandon shara R ya ƙunshi 112.0-180.0 mcd, kuma Kwandon shara S ya ƙunshi 180.0-280.0 mcd. Ana amfani da jurewar ±15% a cikin kowane kwandon shara.

3.3 Rarraba Tsayin Tsayin Tsayin

Tsayin tsayin tsayin, wanda ke bayyana launin da ake gani, an rarraba shi azaman AP (520.0-525.0 nm), AQ (525.0-530.0 nm), da AR (530.0-535.0 nm). Jurewar kowane kwandon shara shine ±1 nm.

4. Bincike akan Lanƙwan Aiki

Yayin da aka ambaci takamaiman lanƙwan hoto a cikin takardar bayani (misali, Hoto na 1 don rarraba bakan, Hoto na 5 don kusurwar kallo), ana iya bayyana halayensu na al'ada. Dangantakar tsakanin halin gaba (IF) da ƙarfin lantarki na gaba (VF) tana da ƙima, siffa ta diode. Ƙarfin hasken gani yana kusan daidai da halin gaba a cikin kewayon aikin da aka ba da shawarar. Tsayin tsayin tsayin na iya nuna ɗan ƙaramin canji mara kyau (zuwa ga gajerun tsayin tsayin) tare da ƙara halin yanzu da kuma canji mai kyau (zuwa ga tsayin tsayin) tare da ƙara zafin haɗin gwiwa. Fahimtar waɗannan yanayin yana da mahimmanci don ƙirar tsarin haske mai tsayayye da daidaito.

5. Bayanin Injiniya da Fakitin

5.1 Girman Fakitin

LED ta yi daidai da daidaitaccen sawun SMD. Muhimman girma sun haɗa da tsawon jiki, faɗi, da tsayi. Takardar bayani tana ba da cikakken zanen injiniya tare da duk mahimman ma'auni, gami da tazarar jagora da girman gabaɗaya, masu mahimmanci don ƙirar tsarin ƙasa na PCB (Allon Kewayawa da aka Buga).

5.2 Gano Polarity da Tsarin Pad

Kayan yana da alamar polarity bayyananne, yawanci notch ko digo akan fakitin, yana nuna cathode. Takardar bayani ta haɗa da zanen girman pad ɗin gyarar da aka ba da shawarar don tabbatar da ingantaccen samuwar haɗin gyarar da kwanciyar hankali na injiniya. Hakanan tana ba da shawarar mafi kyawun yanayin aikin gyarar don hana kabari (inda ƙarshen ya tashi daga pad).

6. Jagororin Gyarawa da Haɗawa

6.1 Bayanin Yanayin Gyarar IR Reflow

An cancanta na'urar don hanyoyin gyarar maras gubar (Pb-free). An ba da shawarar bayanin reflow, wanda ya bi ka'idojin JEDEC. Muhimman ma'auni sun haɗa da yankin pre-heat (150-200°C), hawan hawan da aka sarrafa, matsakaicin zafin jiki bai wuce 260°C ba, da lokacin sama da 260°C an iyakance zuwa matsakaicin dakika 10. Jimlar lokacin pre-heat yakamata ya zama dakika 120 matsakaicin. Dole ne a yi la'akari da wannan bayanin don takamaiman haɗin PCB don tabbatar da amincin sa.

6.2 Gyarar Hannu

Idan gyarar hannu ya zama dole, dole ne a yi taka tsantsan. Zafin ƙarshen ƙarfe na gyarar bai kamata ya wuce 300°C ba, kuma lokacin tuntuɓar kowane jagora yakamata a iyakance zuwa dakika 3 matsakaicin. Wannan yakamata a yi shi sau ɗaya kawai don hana lalacewar zafi ga fakitin epoxy da guntu na semiconductor.

6.3 Tsaftacewa da Ajiya

Idan ana buƙatar tsaftacewa bayan gyarawa, kawai takamaiman abubuwan narkewa kamar barasa na isopropyl ko ethyl alcohol yakamata a yi amfani da su. Nutsewa yakamata ya kasance a yanayin zafi na al'ada na ƙasa da minti ɗaya. Sinadarai da ba a bayyana ba na iya lalata fakitin. Don ajiya, jakunkunan da ba a buɗe ba masu hana danshi yakamata a ajiye su a ≤30°C da ≤90% Danshi na Dangi (RH). Da zarar an buɗe, yakamata a ajiye LED a ≤30°C da ≤60% RH kuma a yi amfani da su cikin mako guda. Don ajiya mai tsawo daga cikin jakar asali, ana ba da shawarar gasa a 60°C na aƙalla sa'o'i 20 kafin gyarawa don cire danshin da aka sha da kuma hana "popcorning" yayin reflow.

7. Bayanin Fakitin da Oda

Ana ba da LED akan tef ɗin ɗaukar kaya mai faɗi 8mm wanda aka nannade akan reels masu diamita 7-inch (178mm). Kowace reel tana ƙunshe da guda 3000. Aljihun tef ɗin an rufe shi da tef ɗin saman kariya. Fakitin yana bin ƙayyadaddun ANSI/EIA-481. Don adadin ragowar, mafi ƙarancin adadin fakitin guda 500 ya shafi.

8. Bayanin Aikace-aikace da Abubuwan Ƙira

8.1 Yanayin Aikace-aikace na Al'ada

Wannan LED mai duban gefe ya dace da aikace-aikacen da ke buƙatar hasken gefe ko nuna matsayi daga gefen na'ura. Amfanin gama gari sun haɗa da hasken baya don maɓallan membrane, hasken gefe don nuni na LCD a cikin na'urorin hannu, alamomin matsayi akan gefen kayan lantarki na masu amfani (kamar na'urorin hanyar sadarwa, akwatunan saiti), da hasken baya don alamomi ko rubutu akan allon gaba.

8.2 Ƙirar Kewayawa

Resistan mai iyakance halin yanzu ya zama dole lokacin tuka LED daga tushen ƙarfin lantarki. Ana iya ƙididdige ƙimar resistor (R) ta amfani da Dokar Ohm: R = (V_supply - VF) / IF, inda VF shine ƙarfin lantarki na gaba na LED (yi amfani da matsakaicin ƙima don ƙira mai tsauri) kuma IF shine halin gaba da ake so (misali, 20 mA). Tuka LED tare da tushen halin yanzu na dindindin ya fi dacewa don mafi kyawun haske da daidaiton launi, musamman akan bambancin zafin jiki.

8.3 Gudanar da Zafi

Ko da yake ɓarnar wutar lantarki tana da ƙasa, ingantaccen ƙirar zafi akan PCB yana da mahimmanci don dogon lokacin amincin. Tabbatar da isasshen yanki na jan ƙarfe a kusa da pad ɗin LED yana taimakawa wajen tarwatsa zafi da kuma kiyaye ƙaramin zafin haɗin gwiwa, wanda ke kiyaye fitar da haske da tsawon rai.

8.4 Kariya daga ESD (Fitar da Lantarki ta Electrostatic)

LED suna da hankali ga fitar da lantarki ta electrostatic. Hanyoyin sarrafawa yakamata su haɗa da amfani da igiyoyin wuyan da aka kafa, tabarma mai hana tashin hankali, da kwantena masu ɗaukar kaya. Duk kayan aikin haɗawa dole ne a kafa su da kyau.

9. Kwatancen Fasaha da Bambance-bambance

Babban bambance-bambancen wannan ɓangaren shine ƙirar sa ta fitar da haske daga gefe, wanda ya bambanta da mafi yawan LED na SMD masu fitarwa daga sama. Idan aka kwatanta da tsofaffin fasahohi kamar AlGaInP (don ja/rawaya), guntu na InGaN yana ba da inganci mafi girma da haske a cikin bakan kore/shudi. Kusurwar kallo na digiri 130 tana ba da haske mai faɗi sosai, wanda ke da fa'ida ga aikace-aikacen da ke buƙatar yada haske tare da saman. Dacewar sa da daidaitattun hanyoyin reflow na IR ya sanya shi ya yi daidai da haɗin SMT na zamani, ba kamar tsofaffin LED na rami ba waɗanda ke buƙatar gyarar igiyar ruwa.

10. Tambayoyin da ake yawan yi (FAQ)

Q: Zan iya tuka wannan LED ba tare da resistor mai iyakance halin yanzu ba?

A: A'a. LED na'ura ce da ake tuka ta ta hanyar halin yanzu. Haɗa ta kai tsaye zuwa tushen ƙarfin lantarki zai haifar da wuce gona da iri na halin yanzu, yana lalata ta nan take. Koyaushe yi amfani da resistor na jerin ko direban halin yanzu na dindindin.

Q: Menene bambanci tsakanin tsayin tsayin tsayin da tsayin tsayin tsayin?

A: Tsayin tsayin tsayin (λP) shine tsayin tsayin da rarraba ikon bakan ya fi girma. Tsayin tsayin tsayin (λd) an samo shi daga zanen launi na CIE kuma yana wakiltar tsayin tsayin guda ɗaya na hasken monochromatic mai tsafta wanda zai dace da launin da ake gani na LED. λd ya fi dacewa don ƙayyadaddun launi.

Q: Zan iya amfani da wannan LED don ci gaba da aiki a 20mA?

A: Ee, 20mA shine halin gaba na DC na ci gaba da aka ba da shawarar. Koyaya, tabbatar da yanayin muhalli da ƙirar zafi na PCB suna ba da damar zafin haɗin gwiwa ya kasance cikin iyakoki masu aminci don kiyaye takamaiman aiki da tsawon rai.

Q: Me ya sa yanayin ajiya yake da mahimmanci ga SMD LED?

A: Fakitin epoxy na filastik na iya sha danshi daga iska. A lokacin babban aikin gyarar reflow mai zafi, wannan danshin da aka kama zai iya yin tururi da sauri, yana haifar da matsin lamba na ciki wanda zai iya fashe fakitin ko raba guntu - wani abu da aka sani da "popcorning." Ingantaccen ajiya da gasa suna hana wannan.

11. Misalin Aikace-aikace na Aiki

Yanayi: Ƙirar alamar matsayi mai hasken gefe don na'urar hanyar sadarwa mara waya.Ana buƙatar hawa LED akan babban PCB, wanda aka haɗa ta amfani da hanyar reflow IR maras gubar. Hasken yakamata ya haskaka ta wani ƙaramin taga a gefen murhun filastik na na'urar hanyar sadarwa don nuna "kunna wutar lantarki" da "aikin hanyar sadarwa" (kyalkyali).



Aiwatarwa:An zaɓi LTST-S320TGKT don fitar da gefensa da launin kore. An sanya LED guda biyu kusa da gefen PCB, suna daidaitawa da bututun haske a cikin murhu. An ƙera tsarin ƙasa na PCB bisa ga girman pad ɗin da aka ba da shawarar a cikin takardar bayani. An ƙididdige resistor mai iyakance halin yanzu na 150Ω don samar da 5V (ta amfani da VF_max=3.6V, IF=20mA: R = (5-3.6)/0.02 = 70Ω, 150Ω yana ba da mafi aminci ~9mA). Filin GPIO na microcontroller yana tuka LED ta wannan resistor. Haɗin yana bin takamaiman bayanin reflow, kuma samfurin da aka kammala yana ba da hasken gefe mai faɗi da bayyananne.

12. Gabatarwar Ka'idar Fasaha

Wannan LED ya dogara ne akan fasahar semiconductor na InGaN. Lokacin da aka yi amfani da ƙarfin lantarki na gaba a kan haɗin p-n, ana shigar da electrons da ramuka cikin yanki mai aiki. Haɗuwarsu yana sakin makamashi a cikin nau'in photons (haske). Takamaiman abun da ke cikin gawa na Indium Gallium Nitride a cikin tsarin rijiyar ƙidaya yana ƙayyade makamashin bandgap, saboda haka, tsayin tsayin hasken da aka fitar—a wannan yanayin, kore a kusan 530nm. Ana samun fasalin duban gefe ta hanyar sanya guntu a cikin fakitin da kuma siffantar kofin mai nuni da ruwan tabarau na epoxy, wanda ke jagorantar fitar da haske na farko a gefe.

13. Trends na Masana'antu

Trend a cikin SMD LED yana ci gaba zuwa ga inganci mafi girma (lumens mafi yawa a kowace watt), ƙananan girman fakitin don aikace-aikacen yawa mafi girma, da ingantaccen daidaiton launi ta hanyar ƙaramin rarraba. Hakanan ana ƙara mai da hankali kan amincin a ƙarƙashin yanayi masu tsauri (zafi mafi girma, danshi) don aikace-aikacen mota da masana'antu. Bugu da ƙari, haɗa kayan lantarki na sarrafawa kai tsaye tare da guntu na LED (misali, don LED na RGB masu iya adireshi) wani muhimmin ci gaba ne, ko da yake don sauƙaƙan alamomin LED kamar wannan, abin da ke ci gaba da kasancewa shine inganci, amincin, da dacewa da layukan haɗawa masu sauri na atomatik.