LTST-E682KSTBWT LED Mai Launuka Biyu (Raya/Shuɗi) - Takardun Bayanan Fasaha - Hausa

1. Bayanin Samfurin

LTST-E682KSTBWT LED ne mai launuka biyu na Surface-Mount Device (SMD) wanda ke da ruwan tabarau mai watsawa. Ya haɗa da guntu biyu masu fitar da haske a cikin fakitin daidaitaccen EIA guda ɗaya: ɗaya yana fitar da haske a cikin bakan raya (AlInGaP) ɗayan kuma a cikin bakan shuɗi (InGaN). An ƙera wannan kayan don aikace-aikacen da ke buƙatar ƙaramin tsari, nuni ko hanyoyin haske masu launuka biyu. Babban fa'idodinsa sun haɗa da dacewa da kayan aikin sanya atomatik da hanyoyin gyarawa ta infrared reflow, wanda ya sa ya dace da samarwa mai yawa. Samfurin ya bi ka'idojin RoHS kuma an rarraba shi azaman samfuri mai kore.

2. Bincike Mai zurfi na Sigogi na Fasaha

2.1 Matsakaicin Matsakaicin Matsakaici

An ayyana iyakokin aikin na'urar a yanayin zafin muhalli (Ta) na 25°C. Ga LED raya, matsakaicin ci gaba na DC na gaba shine 30mA tare da ɓarnawar wutar lantarki na 72mW. LED shuɗi yana da ɗan ƙaramin matsakaicin DC na gaba na 20mA amma mafi girman ƙimar ɓarnawar wutar lantarki na 80mW. Dukansu suna raba matsakaicin ƙimar igiyar gaba na 80mA a ƙarƙashin yanayin bugun jini (1/10 aikin aiki, 0.1ms faɗin bugun jini). Matsakaicin fitar da tashin hankali (ESD) ya bambanta sosai: 2000V (HBM) don guntun raya da 300V (HBM) don mafi hankali guntun shuɗi. Kewayon zafin aiki daga -40°C zuwa +85°C, yayin da ajiya zata iya faɗaɗawa daga -40°C zuwa +100°C.

2.2 Halaye na Lantarki da Na Gani

Ana auna ma'auni na aiki a Ta=25°C da igiyar gaba (IF) na 20mA. Ƙarfin haske (Iv) na LED raya ya bambanta daga mafi ƙarancin 112.0 mcd zuwa matsakaicin 355.0 mcd. Ƙarfin LED shuɗi ya bambanta daga 71.0 mcd zuwa 224.0 mcd. Dukansu LED suna da faɗin kusurwar kallo (2θ1/2) na digiri 120. Matsakaicin tsayin tsayin fitarwa (λP) na LED raya shine 591nm tare da tsayin tsayin (λd) na 589nm da rabin faɗin bakan (Δλ) na 15nm. LED shuɗi yana fitarwa a matsakaicin kololuwar 468nm, tsayin tsayin 470nm, da mafi faɗin rabin faɗin bakan na 25nm. Ƙarfin lantarki na gaba (VF) na LED raya yana tsakanin 1.8V da 2.4V, yayin da na LED shuɗi yana tsakanin 2.8V da 3.8V. Matsakaicin igiyar baya (IR) na duka biyun shine 10μA a ƙarfin lantarki na baya (VR) na 5V.

3. Bayanin Tsarin Binning

Samfurin yana amfani da tsarin binning don rarraba LED bisa ga ƙarfin haske da suke fitarwa a 20mA. Wannan yana tabbatar da daidaito a cikin haske don rukunin samarwa. Ga LED raya, lambobin bin suna daga R1 (112.0-140.0 mcd) zuwa T1 (280.0-355.0 mcd). LED shuɗi yana amfani da lambobi daga Q1 (71.0-90.0 mcd) zuwa S1 (180.0-224.0 mcd). Ana amfani da juzu'i na +/-11% ga kowane kwandon ƙarfi. Wannan tsarin yana ba masu ƙira damar zaɓar abubuwan da suka dace da takamaiman buƙatun haske don aikace-aikacensu.

4. Bincike na Lanƙwasa Aiki

Yayin da aka ambaci takamaiman lanƙwasa masu hoto a cikin takardun bayanai (misali, Hoto na 1 don aunin bakan, Hoto na 5 don kusurwar kallo), takardar tana nuna cewa an ba da lanƙwasa na halaye na yau da kullun. Waɗannan yawanci sun haɗa da taswirar igiyar gaba da ƙarfin lantarki na gaba (lanƙwasa IV), ƙarfin haske da igiyar gaba, da ƙarfin haske da zafin muhalli. Lanƙwasa rarraba bakan zasu nuna ƙarfin haske mai dangi da tsayin tsayi ga duka guntun raya da shuɗi, suna nuna kololuwar su da tsayin tsayin su da kuma faɗin bakan. Binciken waɗannan lanƙwasa yana da mahimmanci don fahimtar aiki a ƙarƙashin yanayin da ba daidai ba, kamar igiyoyin tuƙi daban-daban ko yanayin zafi na aiki.

5. Bayanin Injiniya da Fakitin

5.1 Girman Fakitin

LED yana cikin ƙaramin fakitin SMD. Manyan girmansu sun haɗa da tsawon jiki na 3.2mm (0.126 inci), faɗin 2.8mm (0.110 inci), da tsayi na 1.9mm (0.075 inci). Ruwan tabarau da kansa yana da girma na 2.2mm da 3.5mm. An ba da zanen girma a cikin takardun bayanai tare da duk ma'auni a cikin milimita (inci) da juzu'i na gabaɗaya na ±0.2mm sai dai idan an faɗi.

5.2 Ayyukan Fil da Gano Polarity

Na'urar tana da fil guda huɗu. Don samfurin LTST-E682KSTBWT, fil 1 da 2 an sanya su ga cathode da anode na LED raya (takamaiman tsari ya kamata a tabbatar daga zanen), yayin da fil 3 da 4 an sanya su ga LED shuɗi. Yawanci ana yiwa alama cathode akan fakitin. Gano polarity daidai yana da mahimmanci don hana lalacewar bias na baya, musamman ga guntun shuɗi wanda ke da ƙarancin haƙurin ESD.

5.3 Pad ɗin Haɗin PCB da aka Ba da Shawara

An ba da shawarar tsarin ƙasa don gyarawa ta infrared ko tururi. Bin wannan shawarar tsarin pad yana da mahimmanci don cimma ingantaccen tsarin haɗin gwiwa, tabbatar da kyakkyawar haɗin thermal da lantarki, da kuma kiyaye daidaitaccen daidaitawar LED akan allon.

6. Jagororin Gyarawa da Taro

6.1 Sigogi na Gyarawa ta Reflow

Na'urar ta dace da hanyoyin gyarawa ta infrared reflow. Don gyarawa mara gubar, ana ba da shawarar bayanin martaba mai bin J-STD-020B. Manyan sigogi sun haɗa da zafin pre-heat na 150-200°C, lokacin pre-heat har zuwa 120 seconds matsakaici, matsakaicin zafi bai wuce 260°C ba, da lokacin sama da ruwa (ko a kololuwa) an iyakance zuwa 10 seconds matsakaici. Ya kamata a yi reflow sau biyu matsakaici.

6.2 Gyarawa da Hannu

Idan gyarawa da hannu ya zama dole, zafin ƙarshen guntun gyarawa bai kamata ya wuce 300°C ba, kuma lokacin gyarawa kowane jagora ya kamata a iyakance zuwa 3 seconds matsakaici. Ya kamata a yi gyarawa da hannu sau ɗaya kawai.

6.3 Yanayin Ajiya

Don jakunkuna masu hana danshi da aka rufe tare da desiccant, ya kamata a adana LED a ≤30°C da ≤70% RH kuma a yi amfani da su cikin shekara guda. Da zarar an buɗe fakitin asali, yanayin ajiya bai kamata ya wuce 30°C da 60% RH ba. Abubuwan da aka fallasa sama da sa'o'i 168 ya kamata a gasa su a kusan 60°C na akalla awanni 48 kafin gyarawa don cire danshi da hana "popcorning" yayin reflow.

6.4 Tsaftacewa

Idan ana buƙatar tsaftacewa bayan gyarawa, kawai takamaiman kaushi na barasa kamar ethyl alcohol ko isopropyl alcohol ya kamata a yi amfani da su. Ya kamata a nutsar da LED a yanayin zafi na yau da kullun na ƙasa da minti ɗaya. Sinadarai da ba a bayyana ba na iya lalata kayan fakitin ko ruwan tabarau.

7. Bayanin Fakitin da Oda

Ana samar da LED a cikin tef 8mm akan reels masu diamita 7-inch, daidai da ƙayyadaddun ANSI/EIA 481. Kowane reel yana ɗauke da guda 2000. Don adadin ƙasa da cikakken reel, mafi ƙarancin adadin shiryawa na guda 500 ya shafi sauran. Tef yana amfani da tef ɗin murfi don rufe aljihunan fanko, kuma matsakaicin adadin abubuwan da suka ɓace a jere akan reel shine biyu. Lambar sashi LTST-E682KSTBWT tana ƙayyade na'urar tare da ruwan tabarau mai watsawa, guntun raya (AlInGaP) da shuɗi (InGaN).

8. Shawarwarin Aikace-aikace

8.1 Yanayin Aikace-aikace na Yau da Kullun

Wannan LED mai launuka biyu ya dace da nuni na yanayi a cikin kayan lantarki na mabukaci, kayan aikin ofis, na'urorin sadarwa, da kayan gida. Ana iya amfani da shi don nuna yanayi daban-daban na aiki (misali, kunna wuta/tsaye, ayyukan cibiyar sadarwa, yanayin caji) ta amfani da launuka biyu daban-daban. Faɗin kusurwar kallonsa ya sa ya dace da alamomin gaban allon.

8.2 Abubuwan Tunani na Ƙira

Dole ne masu ƙira su yi la'akari da buƙatun ƙarfin lantarki na gaba daban-daban na guntu biyu lokacin ƙirar da'irar tuƙi. Dole ne a yi amfani da resistor mai iyakancewa igiyar ruwa ga kowane guntun LED da kansa don tabbatar da igiyar ruwa da haske daidai. Babban bambanci a cikin hankali na ESD (2000V vs. 300V HBM) yana buƙatar kulawa da kariya ta ESD a matakin allon ga LED shuɗi, musamman yayin taro da gwaji. Ya kamata a yi la'akari da sarrafa zafi idan ana aiki kusa da matsakaicin ƙimar igiyar ruwa ko a cikin yanayin zafi mai girma.

9. Kwatancen Fasaha da Bambance-bambance

Babban abin da ya bambanta wannan ɓangaren shine haɗa kayan semiconductor daban-daban na sinadarai (AlInGaP da InGaN) a cikin fakitin guda ɗaya, yana ba da fitarwa raya da shuɗi. Idan aka kwatanta da amfani da LED guda biyu masu launi ɗaya, wannan yana adana sararin allon kuma yana sauƙaƙa taro. Faɗin kusurwar kallo na digiri 120 fa'ida ce ta gama gari don aikace-aikacen nuni. Bambancin ƙarfin ƙarfi na ESD tsakanin guntu biyu wani muhimmin abu ne idan aka kwatanta da wasu LED masu launuka biyu na kayan guda ɗaya waɗanda zasu iya samun halaye masu daidaito.

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

Q: Shin zan iya tuƙi duka LED biyu a lokaci guda a matsakaicin igiyar DC?

A: Ba a ba da shawarar tuƙi duka a matsakaicin igiyar DC (30mA raya, 20mA shuɗi) a lokaci gudu ba tare da bincike mai zurfi na zafi ba, saboda haɗakar ɓarnawar wutar lantarki (152mW) na iya wuce ikon fakitin na zubar da zafi, musamman a cikin ƙananan wurare. Ana ba da shawarar rage ƙima bisa ga zafin aikace-aikace.

Q: Me ya sa ƙimar ESD na LED shuɗi ta yi ƙasa sosai?

A: LED shuɗi na tushen InGaN gabaɗaya sun fi kula da fitar da tashin hankali fiye da LED raya na tushen AlInGaP saboda kaddarorin kayan da tsarin na'urar. Wannan halayen gama gari ne a cikin masana'antar kuma yana buƙatar ƙarin matakan sarrafa ESD don guntun shuɗi.

Q: Ta yaya zan fassara lambar bin akan oda?

A: Lambar bin (misali, R1, S2) tana ƙayyade kewayon ƙarfin haske da aka garantiyance don wannan rukunin. Dole ne ku ƙayyade lambar bin da ake so don raya da shuɗi lokacin yin oda don tabbatar da cewa an cika buƙatun haskenku. Idan ba a bayyana ba, kuna iya karɓar abubuwa daga kowane bin samarwa a cikin gabaɗayan kewayon samfurin.

11. Ƙira na Aiki da Hali na Amfani

Yi la'akari da na'urar da ke buƙatar mai nuna caji mai yanayi da yawa: kashe (babu haske), caji (haske shuɗi), da cikakken caji (haske raya). Microcontroller na iya sarrafa fil GPIO guda biyu, kowanne an haɗa shi ta hanyar resistor mai iyakancewa igiyar ruwa da ta dace zuwa anode na guntun LED guda ɗaya, tare da cathode suna haɗe zuwa ƙasa. Ana ƙididdige ƙimar resistor daban-daban bisa ga ƙarfin wadata da igiyar gaba da ake so (misali, 15mA don isasshen haske) ga kowane launi, la'akari da bambancin faɗuwar ƙarfin lantarki na gaba (misali, 2.1V don raya, 3.3V don shuɗi). Tsarin allon dole ne ya bi tsarin pad da aka ba da shawarar kuma ya tabbatar da isassun sharewa daga sauran abubuwan da ke haifar da zafi.

12. Gabatarwar Ka'idar Aiki

Fitar da haske a cikin LED yana dogara ne akan electroluminescence a cikin haɗin p-n na semiconductor. Lokacin da aka yi amfani da ƙarfin lantarki na gaba, ana shigar da electrons da ramuka cikin yankin aiki inda suke sake haɗuwa, suna sakin makamashi a cikin nau'in photons. Launi (tsayin tsayi) na hasken da aka fitar an ƙaddara shi ta hanyar makamashin bandgap na kayan semiconductor. LED raya yana amfani da wani fili na Aluminum Indium Gallium Phosphide (AlInGaP), wanda ke da bandgap daidai da haske raya/ja-orange. LED shuɗi yana amfani da Indium Gallium Nitride (InGaN), wanda ke da mafi faɗin bandgap wanda ya dace da fitarwa shuɗi/kore. An ƙera ruwan tabarau mai watsawa akan guntu don watsa hasken, ƙirƙirar faɗin kusurwar kallo, mafi daidaito.

13. Trends na Fasaha

Ci gaban SMD LED yana ci gaba zuwa mafi inganci (ƙarin lumens kowace watt), ƙara dogaro, da ƙananan girman fakitin. Don fakitin masu launuka da yawa, trends sun haɗa da ƙaramin launi da binning ƙarfi don mafi kyawun daidaito, ingantaccen kariyar ESD da aka haɗa cikin na'urar, da fakitin da ke ba da damar mafi girman ƙarfin wutar lantarki da ingantaccen sarrafa zafi. Har ila yau, ana mai da hankali sosai kan daidaita bakan takamaiman don aikace-aikace na musamman bayan nuni mai sauƙi, kamar tsarin firikwensin da hasken baya. Kimiyyar kayan tushe na duka AlInGaP da InGaN na ci gaba da ci gaba, tura iyakokin inganci da tsawon rayuwa.