Takardar Bayani na Fasaha ta SMD LED LTST-C171KEKT - Girman 3.2x1.6x0.8mm - Ƙarfin Wutar Gaba 2.4V - Wutar Lantarki 75mW - Launi Ja - Takardar Fasaha ta Turanci

1. Bayyani Game da Samfur

LTST-C171KEKT na'urar haɗawa ta saman (SMD) ce ta diode mai fitar da haske (LED) wacce ke cikin rukunin chip LED. Babban sifarta ta musamman ita ce siririn siriri, tare da tsayin fakitin milimita 0.8 kawai. Wannan ya sa ya dace da aikace-aikacen da ke da matsalolin sarari, musamman tsayin tsaye (Z-height). Na'urar tana amfani da kayan semiconductor na Aluminum Indium Gallium Phosphide (AlInGaP) a matsayin tushen haske, wanda aka ƙera don samar da fitar da hasken ja mai inganci. Ana ba da LED a cikin daidaitaccen tsarin fakitin da ya dace da EIA, an ɗora shi akan tef ɗin ɗaukar kaya na milimita 8 kuma an nannade shi a kan reels masu diamita inci 7, yana sauƙaƙe dacewa da kayan aikin sarrafawa da aka yi amfani da su a cikin masana'antar kayan lantarki na zamani.

2. Zurfin Bincike na Ma'auni na Fasaha

2.1 Ƙididdiga na Iyaka na Gaskiya

Ƙididdiga na iyaka na gaskiya suna ayyana iyakokin damuwa waɗanda za su iya haifar da lalacewa na dindindin ga na'urar. Waɗannan ba yanayi ba ne don aiki na yau da kullun. Ga LTST-C171KEKT, an ƙayyade matsakaicin halin yanzu na ci gaba (DC) a matsayin 30 mA a yanayin zafin muhalli (Ta) na 25°C. Na'urar na iya ɗaukar mafi girman halin yanzu na wucin gadi a ƙarƙashin yanayin bugun jini, tare da matsakaicin halin yanzu na gaba na 80 mA wanda aka halatta a cikin zagayowar aiki na 1/10 da faɗin bugun 0.1ms. Matsakaicin raguwar wutar lantarki shine 75 mW. Muhimmin ma'aunin zafi shine ma'aunin raguwar halin yanzu na gaba, wanda ke layi daga 50°C zuwa gaba a cikin adadin 0.4 mA a kowace °C. Wannan yana nufin dole ne a rage halin yanzu na ci gaba yayin da yanayin aiki ya ƙaru sama da 50°C don hana yin zafi sosai. Matsakaicin ƙarfin lantarki na baya wanda za'a iya amfani da shi ba tare da haifar da rushewa ba shine 5 V. An ƙididdige na'urar don aiki da adana cikin kewayon zafin jiki daga -55°C zuwa +85°C.

2.2 Halaye na Lantarki & Na Gani

Ana auna halayen aiki na yau da kullun a Ta=25°C. Muhimmin ma'aunin gani, ƙarfin haske (Iv), yana da ƙimar yau da kullun na 54.0 millicandelas (mcd) lokacin da aka motsa shi a yanayin gwaji na halin yanzu na gaba (IF) na 20 mA. Yana da mahimmanci a lura cewa wannan ma'aunin yana amfani da firikwensin da tacewa da aka daidaita zuwa lanƙwasa amsa ido na CIE photopic. Kallon kusurwa, wanda aka ayyana a matsayin 2θ1/2 inda ƙarfin ya ragu zuwa rabin ƙimar axis, yana da faɗin digiri 130, yana nuna faɗi, tsarin fitarwa mai watsewa maimakon ƙunƙun katako. Halayen bakan suna nuna mafi girman tsayin fitarwa (λP) yawanci a 632 nm, yayin da mafi girman tsayin raƙuman ruwa (λd), wanda ke ayyana launi a zahiri, yawanci 624 nm. Rabin faɗin layin bakan (Δλ) shine 20 nm, yana bayyana yaduwar tsayin raƙuman ruwa da aka fitar. A lantarki, ƙarfin lantarki na gaba (VF) a 20 mA yawanci 2.4 V ne, tare da matsakaicin 2.4 V. Halin yanzu na baya (IR) yana da ƙasa sosai, tare da matsakaicin 10 μA a cikin cikakken ƙarfin lantarki na baya na 5 V. Ƙarfin na'urar (C) yawanci 40 pF ne da aka auna a sifili bias da 1 MHz.

3. Bayanin Tsarin Binning

Samfurin yana amfani da tsarin binning don rarraba raka'a bisa ga ƙarfin haske da aka auna. Wannan yana tabbatar da daidaito a cikin rukunin samarwa don aikace-aikacen da ke buƙatar haske iri ɗaya. An ayyana lambobin kwandon don LTST-C171KEKT kamar haka: Lambar Kwandon M tana rufe ƙarfin daga 18.0 zuwa 28.0 mcd, N daga 28.0 zuwa 45.0 mcd, P daga 45.0 zuwa 71.0 mcd, Q daga 71.0 zuwa 112.0 mcd, da R daga 112.0 zuwa 180.0 mcd, duk an auna su a IF=20mA. Ana amfani da jurewar +/-15% ga iyakokin kowane kwandon ƙarfi. Takardar bayani ba ta nuna rarrabuwar binning daban don mafi girman tsayin raƙuman ruwa ko ƙarfin lantarki na gaba don wannan takamaiman lambar sashi ba, yana nuna tsauraran kulawa akan waɗannan ma'auni ko bayar da kwandon guda ɗaya.

4. Bincike na Lanƙwasa Aiki

Yayin da aka ambaci gajeriyar rubutun da aka bayar game da lanƙwasa halaye na yau da kullun akan shafi na 6, ba a haɗa takamaiman zane-zane a cikin rubutun ba. Dangane da halayen LED na yau da kullun, za a yi tsammanin ganin lanƙwasa da ke nuna alaƙa tsakanin halin yanzu na gaba (IF) da ƙarfin haske (Iv), wanda gabaɗaya yana layi a cikin kewayon aiki na yau da kullun. Wani muhimmin lanƙwasa zai nuna ƙarfin lantarki na gaba (VF) da halin yanzu na gaba (IF), yana nuna halayen diode na I-V. Lanƙwasa dogaro da zafin jiki suma daidai suke, suna nuna yadda ƙarfin haske da ƙarfin lantarki na gaba ke canzawa tare da yanayin muhalli ko haɗuwa, yawanci suna nuna raguwa a cikin ƙarfi da raguwa a cikin VF yayin da zafin jiki ya tashi. Lanƙwasa rarraba ƙarfin bakan dangi zai wakilta a zahiri mafi girman fitarwa a ~632 nm da rabin faɗin 20 nm.

5. Bayanin Injiniya & Marufi

An tattara LED a cikin ƙafar chip LED na masana'antu. Babban fasalin injiniya shine siririn siriri na milimita 0.80. An ambaci cikakkun zane-zane na girman fakitin, suna ƙayyade tsayi, faɗi, tazarar jagora, da sauran mahimman jurewar injiniya, waɗanda galibi ±0.10 mm ne. An ƙera na'urar don marufi na tef-da-reel wanda ya dace da haɗin kai. Ƙididdigar reel suna bin ka'idodin ANSI/EIA 481-1-A-1994. Reel mai diamita inci 7 ya ƙunshi guda 3000. Tef ɗin yana da aljihu da aka rufe da tef ɗin murfin. Jagororin sun ƙayyade matsakaicin abubuwan da suka ɓace biyu a jere (aljihu fanko) da mafi ƙarancin adadin shiryawa na guda 500 don sauran reels. Hakanan ana ba da madaidaicin girman shimfidar wurin haɗa guntun ƙarfe don tabbatar da ingantaccen haɗin guntun ƙarfe da kwanciyar hankali na injiniya yayin da kuma bayan aikin reflow.

6. Jagororin Haɗa Guntun Ƙarfe & Haɗawa

Na'urar ta dace da duka hanyoyin haɗa guntun ƙarfe na infrared (IR) da na lokacin tururi, wanda ke da mahimmanci don haɗawa mara gubar (Pb-free). An ba da takamaiman iyakokin yanayin haɗa guntun ƙarfe. Don haɗa guntun ƙarfe na igiyar ruwa, an ƙayyade matsakaicin zafin jiki na 260°C na matsakaicin dakika 5. Don reflow na infrared, an ba da izinin irin wannan kololuwar 260°C na dakika 5. Don reflow na lokacin tururi, yanayin shine 215°C har zuwa mintuna 3. Takardar bayani ta haɗa da shawarwarin bayanan zafin jiki na reflow don duka tsarin na yau da kullun (tin-lead) da na Pb-free. Shawarar bayanin Pb-free a bayyane ta ce ana amfani da ita tare da manne guntun ƙarfe na SnAgCu (Tin-Silver-Copper). An jera ƙarin shawarwarin haɗa guntun ƙarfe na gabaɗaya a cikin sashen taka tsantsan, gami da ma'auni na pre-heat da matsakaicin zafin jiki na guntun ƙarfe (300°C na dakika 3 matsakaicin, sau ɗaya kawai).

7. Shawarwarin Aikace-aikace

An ƙera wannan LED don aikace-aikacen kayan lantarki na gabaɗaya, kamar kayan aikin ofis, na'urorin sadarwa, da kayan amfani na gida. Muhimmin la'akari na ƙira shine cewa LEDs na'urori ne masu aiki da halin yanzu. Don tabbatar da haske iri ɗaya lokacin tuka LEDs da yawa a layi daya, ana ba da shawarar sosai don amfani da resistor mai iyakance halin yanzu a jere tare da kowane LED (Tsarin Kewayawa A). Tuka LEDs da yawa a layi daya kai tsaye daga tushen wutar lantarki ba tare da resistors ɗaya ɗaya ba (Tsarin Kewayawa B) ba a ba da shawara, saboda ƙananan bambance-bambance a cikin halayen ƙarfin lantarki na gaba (Vf) tsakanin LEDs ɗaya ɗaya na iya haifar da bambance-bambance masu mahimmanci a cikin rabon halin yanzu kuma, saboda haka, hasken da aka gane. Faɗin kallon kusurwa na digiri 130 ya sa ya dace da alamomin matsayi, hasken baya na gumaka, ko hasken gabaɗaya inda ake son ɗaukar kusurwa mai faɗi.

8. Sarrafawa, Ajiya & Taka Tsantsan

An ba da cikakkun umarnin sarrafawa don tabbatar da amincin. Don ajiya, yanayin muhalli bai kamata ya wuce 30°C da 60% danshi ba. Idan an cire LEDs daga ainihin marufin shinge na danshi, ana ba da shawarar kammala aikin haɗa guntun ƙarfe na IR reflow a cikin sa'o'i 672 (kwanaki 28). Don ajiyar dogon lokaci a waje da ainihin jakar, ana ba da shawarar ajiya a cikin akwati mai rufi tare da desiccant ko a cikin yanayin nitrogen. Idan ajiya ta wuce sa'o'i 672, ana ba da shawarar gasa a kusan 60°C na aƙalla sa'o'i 20 kafin haɗawa don cire danshin da aka sha kuma hana \"popcorning\" yayin reflow. Don tsaftacewa, kawai dole ne a yi amfani da kaushi na barasa kamar isopropyl alcohol ko ethyl alcohol a zafin daki na ƙasa da minti ɗaya. Sinadarai da ba a bayyana ba na iya lalata fakitin. Ƙaƙƙarfan Taka Tsantsan na Fitowar Wutar Lantarki na Electrostatic (ESD) wajibi ne, saboda na'urar tana da hankali. Shawarwari sun haɗa da amfani da bel ɗin wuyan hannu mai ƙasa, ƙasa duk kayan aiki da saman aiki, da amfani da ionizers don kawar da cajin tsaye. Lalacewar ESD na iya bayyana a matsayin babban ɓarkewar halin yanzu na baya, ƙarancin ƙarfin lantarki na gaba, ko gazawar haskakawa a ƙananan halin yanzu.

9. Kwatancen Fasaha & Bambance-bambance

Babban abin banbance na LTST-C171KEKT shine bayaninsa na 0.8 mm, wanda ke da ƙasa sosai ga chip LED. Idan aka kwatanta da daidaitattun chip LED masu tsayi 1.0 mm ko 1.2 mm, wannan yana ba da damar ƙira a cikin samfuran ƙarshe masu siriri. Amfani da fasahar AlInGaP yana ba da ingantaccen haske don hasken ja, yawanci yana ba da inganci da kwanciyar hankali fiye da tsofaffin fasahohi kamar GaAsP. Faɗin kallon kusurwa na digiri 130 wani muhimmin fasali ne, yana ba da fitar da haske mai faɗi da daidaito idan aka kwatanta da LEDs masu ƙunƙuntaccen kusurwar kallo, waɗanda suka fi dacewa da aikace-aikacen katako mai mai da hankali. Dacewarsa tare da daidaitaccen IR/lokacin tururi reflow da marufi na tef-da-reel ya sa ya zama ɓangaren saukowa don layukan fasahar haɗawa ta saman (SMT) masu girma.

10. Tambayoyin da ake yawan yi (FAQ)

Q: Menene babban fa'idar tsayin 0.8mm?

A: Yana ba da damar haɗawa cikin na'urorin lantarki masu siriri sosai, kamar wayoyin hannu na zamani, kwamfutocin hannu, kwamfutocin tafi-da-gidanka masu siriri, da fasahar sawa, inda sararin ciki yana da daraja.



Q: Zan iya tuka wannan LED kai tsaye daga wadataccen dabaru na 3.3V ko 5V?

A: A'a. Dole ne a tuka LED tare da tushen da aka iyakance halin yanzu. Haɗa shi kai tsaye zuwa tushen wutar lantarki zai haifar da wuce gona da iri na halin yanzu, yana lalata na'urar. Koyaushe yi amfani da resistor na jere ko da'irar direba mai tsayin halin yanzu.



Q: Me yasa ake buƙatar resistor na jere ga kowane LED a layi daya?

A: Ƙarfin lantarki na gaba (Vf) na LEDs yana da jurewar masana'antu. Ba tare da resistors ɗaya ɗaya ba, LEDs tare da ƙananan Vf za su ja mafi yawan halin yanzu, suna zama masu haske kuma suna iya yin zafi sosai, yayin da waɗanda ke da mafi girman Vf za su yi duhu. Resistor yana taimakawa daidaita halin yanzu.



Q: Shin wannan LED ya dace da aikace-aikacen waje?

A: Kewayon zafin aiki shine -55°C zuwa +85°C, wanda ya rufe yawancin yanayin waje. Duk da haka, dogon lokacin aminci a cikin yanayin waje kuma ya dogara da abubuwa kamar bayyanar UV da rufewar danshi na haɗin samfurin ƙarshe, waɗanda ba a ƙayyade su don kayan aikin kaɗai ba.



Q: Menene ma'anar ruwan tabarau \"Ruwa Bayyane\"?

A: Yana nuna cewa kayan ruwan tabarau bayyananne ne kuma ba su da launi. Wannan yana ba da damar ainihin launin guntun AlInGaP (ja) ya fitar ba tare da wani launi ko watsewa daga ruwan tabarau da kansa ba, yana haifar da cikakken launi.

11. Nazarin Shari'ar Ƙira da Amfani

Yanayi: Ƙirar allon nuna matsayi don siririn na'urar sadarwa ta hanyar sadarwa.

Ƙirar tana buƙatar LEDs na matsayi ja da yawa (don wutar lantarki, intanet, Wi-Fi, da sauransu) don sanya su a kan gaban allon tare da iyakacin zurfi a bayan fascia. Yin amfani da LEDs na al'ada masu tsayi 1.2mm zai tilasta mafi kauri na samfur ko ƙirar PCB mai sassa. Ta zaɓar LTST-C171KEKT tare da tsayinsa na 0.8mm, ana iya sanya PCB kusa da gaban allon, yana adana milimita 0.4 na sararin tsaye a kowane wurin LED. Wannan yana ba da damar ƙira mai sauƙi, mafi ƙanƙanta na na'urar sadarwa. Mai zanen ya aiwatar da Tsarin Kewayawa A, yana amfani da resistor mai iyakance halin yanzu guda ɗaya ga kowane LED da aka haɗa a layi daya zuwa layin dogo na 3.3V akan microcontroller na allon, yana tabbatar da cewa duk alamun suna da haske iri ɗaya. Tsarin PCB yana bin madaidaicin girman shimfidar wurin haɗa guntun ƙarfe daga takardar bayani don tabbatar da ingantattun haɗin guntun ƙarfe yayin aikin reflow mara gubar da aka ƙayyade don haɗin babban allon.

12. Ka'idar Aiki

Fitar da haske a cikin wannan LED ya dogara ne akan ka'idar electroluminescence a cikin haɗin p-n na semiconductor. Yankin aiki ya ƙunshi Aluminum Indium Gallium Phosphide (AlInGaP), kayan semiconductor mai kai tsaye bandgap. Lokacin da aka yi amfani da ƙarfin lantarki na gaba wanda ya wuce ƙarfin bandgap na kayan, ana shigar da electrons daga yankin n-type da ramuka daga yankin p-type zuwa yankin aiki. Waɗannan masu ɗaukar caji suna sake haɗawa ta hanyar radiyo; ma'ana, lokacin da wani electron ya sake haɗuwa da rami, yana sakin makamashi a cikin nau'in photon. Tsayin raƙuman ruwa (launi) na photon da aka fitar an ƙaddara shi ta hanyar ƙarfin bandgap na kayan AlInGaP, wanda aka ƙera don samar da photons a cikin ɓangaren ja na bakan gani (kusan 624-632 nm). Ruwan tabarau na epoxy \"ruwa bayyane\" yana rufe guntun semiconductor, yana ba da kariya ta injiniya, yana siffanta fitar da hasken katako (sakamakon kusurwar kallo na digiri 130), da haɓaka fitar da haske daga guntun.

13. Trends na Fasaha

Ci gaban chip LEDs masu siriri kamar LTST-C171KEKT yana motsa shi ta hanyar ci gaba da yanayin raguwa da raguwar kauri a cikin kayan lantarki na mabukaci, cikin motoci, da na'urorin sawa. Ƙaura zuwa AlInGaP daga tsofaffin kayan kamar GaAsP yana ba da inganci mafi girma, ma'ana mafi yawan fitar da haske (lumens) a kowace raka'a na wutar lantarki (watts), yana ba da gudummawa ga ingantaccen amfani da makamashi a cikin samfuran ƙarshe. A cikin masana'antu, dacewa da bayanan zafin jiki na reflow mara gubar (Pb-free) yanzu buƙatu ne na yau da kullun saboda ƙa'idodin muhalli na duniya (misali, RoHS). Masana'antu na ci gaba da turawa don mafi girman haske a cikin ƙananan fakitoci, ingantaccen daidaiton launi ta hanyar ƙarfafa binning, da haɓaka aminci a ƙarƙashin yanayi mai tsanani kamar zafi da danshi. Bugu da ƙari, haɗa guntuwar LED da yawa (RGB) cikin fakitin siriri guda ɗaya don aikace-aikacen cikakken launi yanki ne na ci gaba mai aiki.