Bayanin Fasaha na LED Blue Mai Ƙarfi 3.45x3.45x2.20mm 2.6-3.4V 5.1W 465-475nm

1. Bayani Kan Samfur

Wannan LED yana amfani da fasahar InGaN a kan wani substrate don samar da haske mai ƙarfi shuɗi. Na'urar an saka shi a cikin jikin seramik mai ƙarfi tare da girman 3.45mm x 3.45mm x 2.20mm, yana sa ya dace da aikace-aikacen haske masu ƙarancin sarari. An ƙera LED don haɗawa da fasahar SMT kuma yana dacewa da matakai na reflow soldering. Yana samuwa a cikin kaset da reel don na'urorin pick-and-place na atomatik. Samfurin ya cika RoHS kuma an rarraba shi a matsayin matakin damshin 1 (MSL-1), yana nuna babu buƙatar kula da danshi na musamman kafin soldering.

1.1 Muhimman Abubuwa

• Jikin seramik don sarrafa zafi da aminci mai kyau
• Babban kallon kusurwa (120 digiri na yau) don rarraba haske daidai
• Ya dace da duk haɗin SMT da matakai na soldering
• Yana samuwa a kaset da reel tare da 1000 guda a kowace reel
• Matsayin damshin 1
• Ya cika RoHS, babu abubuwa masu cutarwa

1.2 Aikace-aikace

LED blue za a iya amfani da shi a cikin nau'ikan haske na gaba ɗaya da aikace-aikace na musamman. Misali na yau sun haɗa da fitilun gargaɗi, downlights, fitilun bango, da spotlights. Na'urar kuma ta dace da fitilun kala na ado, tsiri na LED, hasken shuke-shuke, hasken shimfidar wuri, hasken hoto na mataki, da kayan aikin jinya na ado. Bugu da kari, yana da kyau ga gida da kasuwanci ciki har da otal, kasuwa, ofis, da gidaje. Yanayin zafi mai yawa (-40°C zuwa +85°C) yana tabbatar da aiki mai aminci a yanayi daban-daban.

2. Girman Fakitin da Bayanan Injiniya

Fakitin LED yana da tsawon 3.45mm, faɗi 3.45mm, da tsayi 2.20mm. Kallon kasa yana bayyana shimfidar anode da cathode don gano polarity cikin sauki. Matsakaicin anode yana kusan 1.30mm x 0.85mm, yayin da cathode ya fi girma kadan a 1.30mm x 0.65mm. Ana ba da shawarar tsarin soldering da aka inganta don sadarwa mai zafi da lantarki. An bayar da girman gindin PCB a cikin bayanan: matashin anode rectangular 3.25mm x 0.50mm da matashin cathode 3.25mm x 0.45mm, tare da tazarar 0.30mm tsakanin su. Duk girman suna cikin millimeters tare da haƙurin ±0.2mm sai dai in an bayyana.

3. Halayen Lantarki da Haske

Duk ma'aunin lantarki da haske ana auna su a yanayin gwaji na IF = 350mA da zafin wurin soldering Ts = 25°C, sai dai in an kayyade. Forward voltage yana tsakanin 2.6V zuwa 3.4V, tare da darajar yau kusan 3.0V. Na'urar tana ba da haske tsakanin 30 lumens zuwa 50 lumens, da jimlar haske mai jujjuya daga 400mW zuwa 800mW. Tsawon raƙuman haske yana cikin shuɗi, daga 465nm zuwa 475nm. Reverse current yana iyakance ga 10µA mafi girma idan an yi reverse bias a 5V. Kusurwar kallo yana 120 digiri (a rabin ƙarfi), yana ba da yaduwar katako.

3.1 Matsakaicin Matsakaicin Ƙarfi

Dole ne a guje wa matsakaicin matsayi don hana lalacewar na'urar. Rushewar wutar lantarki an ƙiyasta a 5100mW (5.1W). Forward current zai iya tafiya har zuwa 1500mA (1.5A) a ci gaba, da 1600mA (1.6A) a yanayin bugun jini (1/10 duty cycle, 0.1ms pulse width). Reverse voltage bai kamata ya wuce 5V ba. An ƙiyasta na'urar don fitar da lantarki (HBM) na 2000V. Yanayin zafin aiki shine -40°C zuwa +85°C, kuma yanayin zafin ajiya iri ɗaya ne. Zafin junction bai kamata ya wuce 150°C ba.

3.2 Bayanin Binning

Don tabbatar da daidaito, ana binning LEDs bisa ga forward voltage, haske, da tsawon raƙuman haske a gwajin na 350mA. Bins na forward voltage sune: F0 (2.6-2.8V), G0 (2.8-3.0V), H0 (3.0-3.2V), da I0 (3.2-3.4V). Bins na haske: FA3 (30-35lm), FA4 (35-40lm), FA5 (40-45lm), da FA6 (45-50lm). Bins na tsawon raƙuman haske: D00 (465-470nm) da E00 (470-475nm). Abokan ciniki ya kamata su bayyana lambobin bin da ake so yayin yin oda don dacewa da buƙatun aikace-aikace.

4. Zane-zanen Aiki na Yau

Waɗannan halayen aiki sune dabi'u na yau kuma an bayar da su don jagorancin ƙira kawai; ba garantin bayyanannu ba.

4.1 Forward Voltage vs. Forward Current

Forward voltage yana ƙaruwa da forward current. A zafin daki, voltage kusan 2.6V a 100mA, 3.0V a 350mA, 3.2V a 700mA, da 3.4V a 1300mA. Dangantakar ta kusan layi ɗaya a cikin kewayon aiki.

4.2 Ƙarfin Haske vs. Forward Current

Ƙarfin haske yana tashi da wutar lantarki amma yana ɗaukar ɗan jiki a manyan wutar lantarki. A 350mA an daidaita ƙarfin haske zuwa 1.0; a 700mA ya kai 1.6; a 1050mA zuwa 2.2; da kuma 1400mA zuwa 2.8.

4.3 Dogaro da Zazzabi

Yayin da zafin wurin soldering ya tashi daga 25°C zuwa 115°C, ƙarfin haske yana raguwa a layi da kusan 40%. Sarrafa zafi yana da mahimmanci don kiyaye haske. Ana buƙatar rage forward current a manyan zafin yanayi: a Ts=50°C mafi girman forward current shine kusan 1400mA, yayin da a Ts=85°C ya ragu zuwa kusan 800mA don guje wa wuce 150°C junction zafi.

4.4 Rarraba Bakan

Bakan haske yana da tsayin raƙuman haske na kusan 465-475nm tare da cikakken faɗi a rabin matsakaici (FWHM) na kusan 25-30nm. Bakan yana da tsabta ba tare da manyan matakan biyu na gani ba.

4.5 Tsarin Radiyoyin

Tsarin radiyoyin kusurwa kusan Lambertian ne tare da kusurwa rabin ƙarfi na ±60 digiri. Ƙarfin haske a ±75 digiri ya faɗi zuwa kusan 0.2 na mafi girma.

5. Bayanin Tattara Ayyuka da Sufuri

An tattara LEDs a cikin 1000 guda a kowace reel a kan kaset. Kaset yana da taki na 4.0mm da faɗi 12.0mm. Girman reel: diamita na waje 178mm ±1mm, diamita na ciki 59mm, da faɗi 14.0mm ±0.5mm. Ana rufe kowace reel a cikin jakar hana danshi tare da bushewa da katin nuna danshi don kiyaye yanayin MSL-1. Lakabin a jaka ya haɗa da lambar sashi, lambar ƙayyadaddun, lambar gungu, lambar bin (na haske, tsawon raƙuman haske, da voltage), adadi, da lambar kwanan wata. Sannan ana sanya reels ɗin a cikin kwalaye na kwali don sufuri.

6. Jagororin SMT Reflow Soldering

Ya kamata reflow soldering ya bi yanayin zafin da aka kayyade a cikin bayanan. Yankin preheat ya kamata ya haura daga 150°C zuwa 200°C a gwargwadon 3°C/s mafi girma, tare da lokacin soak na 60-120 seconds. Yankin mahimmanci sama da 217°C ya kamata ya dauki 60 seconds, tare da mafi girman zafin 260°C na 10 seconds (mafi girma). Ya kamata yawan sanyaya bai wuce 6°C/s ba. An yarda da wucewa biyu kawai na reflow. Idan lokacin tsakanin soldering guda biyu ya wuce 24 hours, LED na iya lalacewa. Soldering da hannu ya kamata a yi amfani da iron a 300°C na kasa da 3 seconds, sau daya kawai. Ya kamata a guje wa gyara; idan ya zama dole, yi amfani da iron mai kai biyu kuma tabbatar da aikin LED bayan gyara. Saman LED na sama yana da silicone mai laushi, don haka nozzles na ɗauka dole ne su yi amfani da matsin da ya dace don guje wa lalacewar encapsulant. Kada a saka LEDs a kan sassan PCB da suka karkata kuma a guje wa karkatar da allo bayan soldering. Ba a ba da shawarar sanyaya da sauri bayan soldering ba.

7. Kariya ta Kulawa da Ajiya

Yanayin aiki da kayan haɗi dole ne su ƙunshi mahadi na sulfur da ƙarancin 100PPM. Abubuwan Bromine da chlorine a cikin kayan waje su kasance kasa da 900PPM kowanne, tare da jimlar bromine da chlorine kasa da 1500PPM. Mahadi masu canzawa (VOCs) daga kayan fitila na iya shiga cikin silicone encapsulant kuma su haifar da canza launi a ƙarƙashin zafi da haske, yana haifar da asarar haske mai yawa. Koyaushe gwada kayan don dacewa kafin amfani. Guji adhesives waɗanda ke fitar da tururin kwayoyin halitta. Ruwan lens silicone yana da laushi; koyaushe riƙe ɓangaren ta gefe ta amfani da tweezers ko kayan aikin da suka dace. Kada a taɓa ruwan lens silicone kai tsaye. A cikin ƙirar circuit, tabbatar da cewa wutar lantarki ta kowace LED bai wuce matsakaicin matsayi ba. Haɗa resistors masu iyakance wutar lantarki don hana hawan zafi daga ƙananan canje-canje na voltage. Kada a taɓa yin amfani da reverse voltage (sama da 5V) ga LED; yana iya haifar da ƙaura da lalacewa na dindindin. Tsarin zafi yana da mahimmanci: ana buƙatar isasshen zafi don kiyaye junction zafi kasa da 150°C. Ruwan silicone yana jan ƙura; idan an buƙaci tsaftacewa, yi amfani da isopropyl alcohol. Ba a ba da shawarar tsaftacewa da ultrasonic ba saboda yana iya lalata LED. Yanayin ajiya: kafin buɗe jakar aluminum, ajiye a ≤30°C da ≤75% RH har zuwa shekara guda daga ranar rufewa. Bayan buɗe, ajiye a ≤30°C da ≤60% RH na tsawon awanni 168. Idan lokacin ajiya ya wuce, gasa LEDs a 60±5°C da 5% RH na akalla awanni 24. Idan jaka ta huda ko ta lalace, tuntuɓi mai sayar da ku.<5% RH na akalla awanni 24. Idan jaka ta huda ko ta lalace, tuntuɓi mai sayar da ku.

8. Gwajin Aminci da Tabbacin Inganci

LEDs sun yi jerin gwaje-gwaje na aminci don tabbatar da aiki mai ƙarfi. Gwaje-gwajen sun haɗa da: reflow soldering (260°C, sau 2), girgizar zafi (-40°C zuwa 100°C, 500 cycles, 15min zama), ajiyar zafi (100°C, awanni 1000), ajiyar zafi mara kyau (-40°C, awanni 1000), gwajin rayuwa (25°C, IF=350mA, awanni 1000), da gwajin rayuwa na zafi da danshi (60°C/90%RH, IF=350mA, awanni 1000). Ma'aunin karɓa: 0 gazawar daga cikin samfurori 10 na kowane gwaji (0/1 AQL). Bayan gwaji, canjin forward voltage dole ne ya kasance a cikin ƙayyadaddun, kiyaye haske aƙalla 80% na darajar farko, kuma babu buɗewa/taƙaitaccen haske ko kyalkyali. Lura cewa waɗannan gwaje-gwaje ana yin su a ƙarƙashin yanayi mai kyau na zafi; amincin aikace-aikacen gaske ya dogara da tsarin zafin tsarin.

9. La'akarin Ƙirar Aikace-aikace

Don ingantaccen aiki, ana ba da shawarar jagorori masu zuwa: tabbatar da isasshen zafi ta amfani da thermal vias ko PCBs na ƙarfe. Rufe junction zafin LED kasa da 150°C a duk yanayin aiki. Yi amfani da direban wutar lantarki na yau da kullum maimakon tushen voltage don hana wuce haddi. Lokacin haɗa LEDs da yawa a jeri, lissafta bambance-bambancen forward voltage binning. A cikin layuka masu layi daya, yi amfani da resistors daban-daban a kowane layi. Don aiki na bugun jini, bi iyakokin peak current da ƙuntatawa na duty cycle. Faɗin kusurwar kallo na 120 digiri yana da amfani ga hasken ambaliya amma yana iya buƙatar na'urorin gani na biyu don aikace-aikacen katako mai kunkuntar. Tsawon raƙuman haske shuɗi (465-475nm) ya dace da hasken shuke-shuke idan aka haɗa shi da LEDs ja, ko don hasken mataki da tasirin ado. Fakitin seramik yana ba da haɓakar zafi mai kyau, amma dole ne a jika matashin soldering na waje don canja wurin zafi da kyau. Guji damuwa na inji akan LED bayan soldering.

10. Kwatanta da Samfurori Madadin

Idan aka kwatanta da ƙananan girman fakitin (misali, 2835 ko 3030), sawun 3.45x3.45mm na wannan LED yana ba da ƙarin iya aiki saboda babbar hanyar zafi. Substrate na seramik yana ba da haɓakar zafi fiye da fakitin filastik na yau, yana ba da damar aiki a 1.5A forward current. Faɗin ɗaukar hoto na wavelength (465-475nm) yana ba da sassauci don cin kashin takamaiman buƙatun launi. Duk da haka, mafi girman fitarwar zafi yana buƙatar ƙarin zafi fiye da na'urorin da ke da ƙananan wutar lantarki. Idan aka kwatanta da na'urorin 3535 blue LED masu kama da juna na masu fafatawa, wannan ɓangaren yana ba da ingantaccen haske (kimanin 85-100 lm/W a 350mA) da kwanciyar hankali na tsawon lokaci sama da zafi. Matsayin MSL-1 yana sauƙaƙe ajiya da dabaru na kulawa.

11. Tambayoyin da Aka Yi Yawa

T: Menene ingantaccen haske na yau?
A: A 350mA, ingancin ya fito daga kimanin 85 zuwa 143 lm/W, ya danganta da bin na haske. Ingantaccen yana raguwa a manyan wutar lantarki saboda raguwar aiki.

T: Zan iya tafiyar da wannan LED a 1A ci gaba?
A: Ee, tare da isasshen sarrafa zafi. Matsakaicin matsakaicin ci gaba shine 1.5A, amma tabbatar da cewa junction zafin bai wuce 150°C ba.

T: Ina buƙatar kariya ta ESD yayin kulawa?
A: Ee, kodayake LED yana jure 2000V HBM, ana ba da shawarar kariyar ESD kamar wuraren aiki na ƙasa da madaurin hannu na antistatic.

T: Menene rayuwar ajiya bayan buɗe jakar hana danshi?
A: Awanni 168 (kwanaki 7) a ≤30°C da ≤60% RH. Bayan haka, ana buƙatar gasa.

T: Shin ruwan lens silicone ya dace da adhesives na gani na yau?
A: Wasu adhesives na iya fitar da VOCs da ke kai hari ga silicone. Yana da mahimmanci a gwada adhesives a cikin yanayin aikace-aikacen da ake nufi.

12. Ka'idojin Fasaha

LED blue yana amfani da Indium Gallium Nitride (InGaN) aiki Layer da aka girma a kan sapphire ko silicon carbide substrate. Lokacin da aka yi amfani da forward bias, electrons da ramuka suna sake haɗuwa a cikin yankin rijiyar ƙididdiga, suna fitar da photons tare da makamashi daidai da bandgap na InGaN. Ta hanyar daidaita abun ciki na indium a cikin rijiyar ƙididdiga, ana iya daidaita tsawon raƙuman haske; don wannan samfurin, an saita abun da ke ciki don samar da haske shuɗi a cikin kewayon 465-475nm. Fakitin seramik yana haɓaka fitar da haske kuma yana ba da ingantacciyar hanyar zafi zuwa matashin soldering. Kusurwar kallo an ƙaddara ta hanyar lissafin ƙoƙon reflector da siffar encapsulation.

13. Hanyoyin Ci Gaba

Masana'antar LED na ci gaba da turawa don ingantaccen aiki da ƙananan farashi. InGaN blue LEDs sun cim ma >200 lm/W a cikin saitunan dakin gwaje-gwaje, kuma samfuran kasuwanci suna inganta a hankali. Yanayin zuwa ƙananan fakitin tare da mafi girman iya aiki (misali, CSP chips) yana ƙalubalantar fakitin seramik don wasu aikace-aikace. Duk da haka, fakitin seramik 3535 ya kasance sananne ga aikace-aikacen manyan wutar lantarki waɗanda ke buƙatar aiki mai ƙarfi na zafi da aminci. Haɗin kai tare da sarrafa haske mai wayo da phosphors cikakken bakan (don samar da haske fari) ci gaba ne da ke gudana. Don aikace-aikacen shuɗi kawai, ana buƙatar binning daidai da kwanciyar hankali na tsawon lokaci sama da zafi daga kasuwannin noma da likitanci.