Jagoran Takardun Bayanan Fasaha na Blue LED PLCC-2 2.8x3.5x0.65mm 3.4V 0.3W don Girman Shuka

1. Bayanin Samfurin

Wannan samfurin yana amfani da fakitin PLCC-2 tare da girman 2.8 x 3.5 x 0.65 mm. LED blue ne da aka tsara don aikace-aikacen girman shuka, yana da tsayin igiyar ruwa 450 nm da kusurwar kallo mai faɗi 120°. An inganta LED don fitar da hasken radiyo mai girma a halin yanzu na gaba 100 mA, yana mai da shi dacewa da hasken noma, al'adun nama, da tsarin masana'antar shuka. Abubuwan da ke tattare da shi sun haɗa da dacewa da duk matakan haɗa SMT da aikin siyarwa, samuwa akan tef da reel, matakin kula da danshi 3, da kuma yarda da RoHS. Tsarin na'urar yana daidaita inganci da dogaro, yana ba da damar aiki na tsawon lokaci a cikin yanayin noma mai wahala.

1.1 Fasaloli

• Fakitin PLCC-2 don ƙaramin tsari.
• Kusurwar kallo mai faɗi 120° don rarraba haske daidai.
• Ya dace da matakan haɗa SMT na yau da kullun.
• Ana samuwa a cikin tef da reel (4000 guda/reel).
• Matsayin kula da danshi 3 (MSL 3).
• Ya bi ka'idodin RoHS don amincin muhalli.

1.2 Aikace-aikace

• Hasken samar da furanni.
• Al'adun nama da micropropagation.
• Noma na tsaye da masana'antar shuka.
• Hasken ƙari don greenhouses.
• Hasken noma na gabaɗaya.

2. Sigogi na Fasaha da Bincike Mai Zurfi

2.1 Halayen Lantarki da Gani (a Ts=25°C, IF=100mA)

Teburin da ke ƙasa ya taƙaita mahimman sigogi na lantarki da gani waɗanda aka auna a zafin siyarwa na 25°C da halin yanzu na gaba 100 mA (sai dai in an bayyana daban).

• Ƙarfin Gaba (VF):Yawanci 3.4 V, mafi ƙarami 2.8 V, mafi girma 3.6 V. Haƙurin auna shine ±0.1 V.
• Halin Baya (IR):A VR=5 V, halin baya yana da ƙanƙanta (yawanci ba a kula da shi), mafi girma 10 μA.
• Jimlar Hasken Radiyo (Φe):Mafi ƙarami 140 mW, yawanci 180 mW, mafi girma 224 mW. Haƙuri ±10%.
• Tsayin Igowa (λp):Mafi ƙarami 440 nm, yawanci 450 nm, mafi girma 455 nm. Haƙuri ±2 nm.
• Kusurwar Kallo (2θ½):120° yawanci, yana ba da rarraba haske mai faɗi.
• Juriya na Zafi (RthJ-S):15 °C/W yawanci, yana nuna isar da zafi mai kyau daga mahadar zuwa wurin siyarwa.

2.2 Matsayin Ƙarfi Cikakke

Ba dole ba ne a wuce waɗannan dabi'un don guje wa lalacewa ta dindindin:

• Rushewar Ƙarfi (PD):0.3 W
• Halin Gaba (IF):100 mA (DC); Halin Gaba Kololuwa (IFP) 150 mA a zagayen aiki 1/10, faɗin bugun jini 0.1 ms.
• Ƙarfin Baya (VR):5 V
• Fitowar Lantarki (ESD, HBM):2000 V (yawan amfanin >90%)
• Zafin Aiki (TOPR):-40°C zuwa +85°C
• Zafin Ajiya (TSTG):-40°C zuwa +100°C
• Zafin Mahada (TJ):115°C mafi girma

Dole ne a kula don tabbatar da cewa zafin mahada bai wuce ƙimar da aka ƙiyasta ba. Ya kamata a iya ƙayyade mafi girman halin yanzu bayan auna zafin fakitin a ƙarƙashin yanayin aiki na ainihi.

2.3 Tsarin Rarraba

Ana rarraba samfura cikin kwano bisa ga ƙarfin gaba (VF), jimlar hasken radiyo (Φe), da tsayin igowa (WLP). Alamar kan kowane reel ta ƙayyade lambar bin, yana ba abokan ciniki damar zaɗar LED masu dacewa don daidaitaccen aiki a cikin jeri. Matsakaicin kwano na VF sune 2.8–3.6 V; na hasken radiyo, 140–224 mW; na tsayin igowa, 440–455 nm. Wannan rabuwa yana tabbatar da daidaito a launi da fitarwa don tsarin haske mai inganci.

3. Binciken Masu Karkata Aiki

3.1 Ƙarfin Gaba da Halin Gaba

Hoto na 1 yana nuna alaƙa tsakanin ƙarfin gaba da halin gaba a zafin daki. Yayin da halin yanzu ya ƙaru daga 0 zuwa 150 mA, ƙarfin gaba ya tashi kusan daga 2.9 V zuwa 3.4 V. Wannan karkata yana da mahimmanci don ƙera direbobi masu daidaita halin yanzu don kiyaye fitar da haske mai tsayayye.

3.2 Ƙarfin Dangi da Halin Gaba

Hoto na 2 yana kwatanta ƙarfin hasken radiyo dangane da halin gaba. Fitowar tana ƙaruwa a layi da halin yanzu har zuwa kusan 80 mA, sannan a hankali tana cika a ƙarin halin yanzu saboda tasirin zafi. Yin aiki kusa da 100 mA yana ba da daidaito mai kyau tsakanin inganci da haske.

3.3 Dogaro da Zafin jiki

Hoto na 3 yana nuna ƙarfin fitarwa dangane da zafin siyarwa (Ts). A yanayin zafi mafi girma, ƙarfin dangi yana raguwa; misali, a 85°C fitowar ta ragu zuwa kusan 80% na ƙimar a 25°C. Dole ne a yi la'akari da wannan raguwar zafi a cikin sarrafa zafin tsarin.

Hoto na 4 yana nuna mafi girman halin gaba da aka yarda dangane da Ts. Don hana zafi mai yawa, halin yanzu dole ne a rage shi yayin da zafin yanayi ya tashi. A Ts=85°C, mafi girman halin yanzu ya ragu zuwa kusan 80 mA.

3.4 Rarraba Bakan

Hoto na 5 yana gabatar da karkatar haske na bakan. Tsayin igowa yana tsakiya a 450 nm tare da cikakken faɗi a rabin mafi girma (FWHM) na kusan 20 nm. Wannan ƙunƙun rukunin shuɗi yana da kyau don kunna takamaiman masu karɗar haske a cikin shuke-shuke kamar cryptochromes da phototropins, yana haɗaka photosynthesis da photomorphogenesis.

3.5 Tsarin Hasken Radiyo

Hoto na 6 yana kwatanta tsarin hasken radiyo na filin mai nisa. A ±60° dangane da axis na gani, ƙarfin ya ragu zuwa 50% na kololuwa, yana tabbatar da kusurwar kallo 120°. Wannan rarrabuwa mai faɗi yana da amfani don haskaka daidai a cikin ganyayen shuka.

4. Bayanin Injiniya da Marufi

4.1 Girman Fakitin

An saka LED a cikin fakitin PLCC-2 mai girma 2.8 mm (tsawo) x 3.5 mm (faɗi) x 0.65 mm (tsayi). Duk haƙuri suna ±0.2 mm sai dai in an bayyana daban. Duban sama yana nuna diamita na ruwan tabarau 2.48 mm. Duban ƙasa yana nuna shimfidar pad rectangular tare da lantarki biyu: anode (pad mai tsawo) da cathode (pad mai gajarta). An yi alama da alamar "+" akan fakitin.

4.2 Samfurin Siyarwa

An bayar da girman pad ɗin siyarwa da aka ba da shawarar a cikin zanen injiniya (Hoto 1-5). Jimlar yankin pad ɗin kusan 2.1 mm x 2.1 mm ne kowane lantarki, tare da pitch na 3.5 mm. Sawun siyarwa mai kyau yana tabbatar da haɗin injiniya da zafi mai dogaro.

5. Jagororin Siyarwa da Haɗawa

5.1 Bayanin Siyarwa na Reflow

Ana ba da shawarar bayanin reflow mara gubar na yau da kullun. Mahimman sigogi: preheat daga 150°C zuwa 200°C na daƙiƙa 60–120; lokaci sama da liquidus (217°C) har zuwa daƙiƙa 60; kololuwar zafi 260°C har zuwa daƙiƙa 10; yawan sanyaya ƙasa da 6°C/s. Jimlar lokaci daga 25°C zuwa kololuwa bai kamata ya wuce mintuna 8 ba. Kada a sake reflow fiye da sau biyu. Idan fiye da awanni 24 suka wuce tsakanin reflows, LED na iya lalacewa.

5.2 Siyarwa da Hannu

Idan ana buƙatar siyarwa da hannu, a kiyaye zafin ƙarfe ƙasa da 300°C kuma lokacin saduwa a ƙasa da daƙiƙa 3. Yarda da ƙoƙarin siyarwa ɗaya kawai. Bayan siyarwa, a guji damuwa injiniya ko sanyaya da sauri.

5.3 Gyara

Gabaɗaya ba a ba da shawarar gyara ba. Idan babu makawa, yi amfani da ƙarfen siyarwa mai kai biyu don dumama pads biyu a lokaci ɗaya, sannan a tabbatar da aikin LED bayan haka.

5.4 Tsanaki

Kayan rufewar silicone ne, mai laushi. Ka guji matsa kan ruwan tabarau. Yi amfani da nozzles ɗin ɗauka masu dacewa tare da ƙarfi mai sarrafawa. Kada a sa LED a kan PCBs da suka karkata kuma a guji lankwasa allon bayan siyarwa.

6. Bayanin Marufi da oda

6.1 Ƙayyadaddun Marufi

Kowace reel tana ƙunshe da guda 4000. Tef ɗin ɗaukar hoto yana da pitch na 4 mm da faɗi na 12 mm, tare da alamomin polarity don shugabanci. Diamita na reel ɗin shine 178 mm, diamita na hub 60 mm, da faɗin tef 12 mm. Alama a kan reel ɗin tana ba da lambar sashi, lambar ƙayyadaddun, lambar lot, lambar bin don hasken radiyo, kewayon ƙarfin gaba, bin tsayin igowa, adadi, da kwanan wata.

6.2 Jakar Kariyar Danshi

An rufe reels a cikin jakar kariyar danshi tare da bushewa da katin nunin zafi. Yanayin ajiya kafin buɗewa: zafin ≤30°C, zafi ≤75% RH, rayuwar shelf har zuwa shekara guda. Bayan buɗewa, dole ne a yi amfani da LED a cikin awanni 24 a ≤30°C/≤60% RH. Idan ya wuce, a gasa a 60°C na awanni 24 kafin amfani.

7. Shawarwarin Aikace-aikace

Wannan LED blue an tsara shi musamman don hasken girman shuka. Tsayin igowa 450 nm yayi daidai da kololuwar ɗaukar chlorophyll a, chlorophyll b, da carotenoids, yana haɗaka ingancin photosynthesis. Don ingantaccen aiki, yi amfani da direba mai halin yanzu mai tsayi tare da ripple ƙasa da 5%. Mafi girman halin aiki ya kamata a rage shi dangane da zafin yanayi da juriya na zafi. Tabbatar da nutsewar zafi mai kyau ta hanyar sanya LED a kan PCB mai cibiya ta ƙarfe ko amfani da vias na zafi kusa. Ka guji fallasa ga mahadi masu ɗauke da sulfur da mahadi masu canzawa (VOCs) waɗanda zasu iya haifar da canza launi ko asarar lumen. Kula da tsabtataccen yanayi yayin haɗawa don hana jan ƙura a kan ruwan tabarau na silicone.

8. Kwatancen Fasaha

Idan aka kwatanta da daidaitattun LED 2835 SMD, fakitin PLCC-2 yana ba da ƙaramin sawun (2.8x3.5 mm vs 2.8x3.5 mm don 2835, amma lura cewa PLCC-2 yayi kama da girman) amma tare da mafi girma hasken radiyo kowane fakitin (180 mW yawanci a 100 mA) idan aka kwatanta da yawancin LED blue 2835 (~100 mW). Kusurwar kallo mai faɗi 120° kuma tana ba da daidaiton sarari mafi kyau. Juriya mai ƙarancin zafi (15°C/W) yana sauƙaƙe watsawar zafi, yana sa wannan LED ya dace da jeri mai yawa a masana'antar shuka. Ƙarfin juriya na ESD na 2000V (HBM) yayi daidai da matsayin masana'antu.

9. Tambayoyin da Aka Yi Yawa

Tambaya 1: Menene mafi girman halin gaba da zan iya amfani da shi?Amsa: Matsayin ƙarfi cikakke shine 100 mA DC, amma a yi la'akari da ragewa a yanayin zafi mai girma. Don aiki mai dogaro, ana ba da shawarar 80-90 mA don daidaita rayuwa da fitarwa.

Tambaya 2: Yaya zan riƙe LED don guje wa lalacewar ESD?Amsa: Yi amfani da kayan kariya na ESD masu dacewa (madaurin wuyan hannu da aka kasa, tebur masu ƙarfi, ionizers) yayin mu'amala. LED na iya jure har zuwa 2000V HBM, amma har yanzu ana buƙatar taka tsantsan.

Tambaya 3: Zan iya amfani da wannan LED don haskakawa gabaɗaya?Amsa: Ee, amma yana fitar da haske shuɗi kawai. Don haske fari, haɗa da phosphor ko wasu LED masu launi.

Tambaya 4: Menene yanayin ajiya da aka ba da shawara don reels da ba a buɗe ba?Amsa: Zafin ≤30°C, zafi ≤75% RH. Rayuwar shelf shine shekara guda daga ranar marufi.

10. Nazarin Harkokin Aiki

A cikin saitin noma na tsaye, an yi amfani da panel na LED blue 200 don samar da hasken ƙari don noman latas. A halin tuki na 80 mA, jimlar hasken radiyo ya kai 36 W (200*0.18 W). An sanya panel ɗin LED 20 cm sama da alfarwa, yana samun PPFD (yawan hasken photon photosynthetic) na kusan 150 μmol/m²/s a matakin alfarwa. Sakamakon biomass na latas ya ƙaru da 30% idan aka kwatanta da hasken yanayi kaɗai. LEDs suna aiki a zafin mahada 45°C, cikin iyakar aminci.

Wani misali: a dakin gwaje-gwaje na al'adun nama, an yi amfani da jerin waɗannan LED don micropropagation na orchids. Bakan shuɗi mai tsafta ya rage etiolation kuma ya haɗaka haɗakar tushen. Kusurwar kallo 120° ya ba da damar haskaka daidai a kan shelves ɗin al'ada ba tare da wuraren zafi ba.

11. Ƙa'idar Aiki

Wannan LED shine diode mai fitar da haske shuɗi na tushen gallium nitride (GaN). Lokacin da aka yi amfani da bias na gaba a cikin mahadar p-n, electrons daga Layer n-type suna sake haɗuwa da ramuka a cikin Layer p-type a cikin yankin aiki. Wannan sake haɗuwa yana sakin makamashi a cikin nau'in photons. An daidaita makamashi na bandgap na tsarin InGaN quantum well don samar da haske a kusan 450 nm (shuɗi). Fakitin PLCC-2 ya rufe guntu kuma yana ba da lambobin lantarki da hanyoyin zafi. Ruwan tabarau na silicone yana kare guntu kuma yana fitar da haske yadda ya kamata.

12. Yanayin Ci Gaba

Kasuwar LED na noma yana ci gaba da sauri. Yanayin gaba ya haɗa da inganci mafi girma (>3 μmol/J), bakan da za a iya daidaitawa wanda ya haɗa da tsayin igowa da yawa, da haɗawa da sarrafawa masu wayo. Ana sa ran fakitin PLCC-2 zai ƙara raguwa yayin haɗaka yawan ƙarfi. Ƙarni na yanzu na LED blue ya riga ya sami hasken radiyo sama da 200 mW kowane fakitin a 100 mA. Bincike kan kayan InGaN da ƙirar guntu yana yin alƙawarin ingantacciyar aiki. Bugu da ƙari, yunƙurin rage farashi da inganta dogaro zai haifar da karɗuwa a manyan masana'antar shuka.