Blue LED 3535 - 3.45x3.45x2.20mm - Wutar 2.6-3.4V - Ikki 5.1W - Tsawon Haske 465-475nm - Takardar Bayanan Fasaha

1. Bayanin Samfurin

RF-AL-C3535L2K1RB-05 wani ingantaccen LED ne mai haske shuɗi wanda aka gina akan fasahar InGaN-on-substrate. An kera shi don ayyukan haskaka gida da na musamman masu buƙata, wannan kwano 3535 (3.45mm x 3.45mm x 2.20mm) yana bayar da tsawon haske na 465-475nm, yana samar da haske shuɗi mai zurfi. Tare da wutar gaba 2.6-3.4V da 350mA da yawan wutar gaba 1500mA, yana ba da haske mai kyau (30-50 lumens) da kuma radiant flux (400-800mW). Kwano na yumbu yana tabbatar da sarrafa zafi mafi kyau da aminci, yana sa ya dace da hada SMT da kuma ƙirƙirar haske mai ƙarfi.

1.1 Muhimman Fa'idodi

• Ƙasan yumbu don juriyar zafi kaɗan da ingantaccen jawo zafi
• Kusurwa mai faɗi sosai (digiri 120) don rarraba haske daidai
• Ya dace da duk hanyoyin hada SMT da kuma hanyoyin walda
• Ana samunsa a cikin teli da reel (1000 guda/reel) don ingantaccen masana'anta
• Matsayin laushin damshi na 1 (MSL1) – ba buƙatar busa kafin amfani
• Ya bi RoHS – ba shi da abubuwa masu lahani

1.2 Ayyukan da Aka Yi Ni

Wannan LED shuɗi ya dace da yawancin ayyuka ciki har da haskaka launin ado, tarkon LED mai sassauƙa, haske don shuka (shuɗi don photosynthesis), hasken shimfidar wuri, hasken mataki da hoto, otal, shaguna, ofisoshi, da haskaka cikin gida. Radiant flux mai yawa ya sa ya dace da curing UV da haskaka masana'antu na musamman inda ake buƙatar tsawon haske shuɗi.

2. Binciken Ma'aunin Fasaha

2.1 Halayen Lantarki-Haske (a 25°C, IF=350mA)

Wutar gaba (VF) tana tsakanin 2.6V da 3.4V tare da matsakaici ~3.0V. Haske (IV) yana tsakanin 30 da 50 lumens, yayin da radiant flux (Φe) yake tsakanin 400mW da 800mW. Tsawon haske (λD) an kayyade shi a 465-475nm, tare da karamin bambanci ±1nm a awo. Juzu'i na baya (IR) a VR=5V yana ƙasa da 10µA, yana tabbatar da ƙarancin zubewa. Kusurwa (2θ1/2) digiri 120, yana ba da murfin haske mai faɗi.

2.2 Matsakaicin Matsayin Haƙuri

• Rarraba Iko (PD): 5100 mW
• Wutar Gaba (IF): 1500 mA
• Wutar Gaba mafi girma (IFP): 1650 mA (duty cycle 1/10, bugun 0.1ms)
• Wutar Baya (VR): 5 V
• ESD (HBM): 2000 V
• Zazzabin Aiki (TOPR): -40°C zuwa +85°C
• Zazzabin Ajiya (TSTG): -40°C zuwa +85°C
• Zazzabin Junction (TJ): 125°C

Dole ne a kula don hana rarraba iko ya wuce matsakaicin matsayin haƙuri. Zazzabin junction ya kamata ya kasance ƙasa da 125°C don kiyaye aminci.

3. Tsarin Rabe-rabe

3.1 Rabe-raben Wutar Gaba (IF=350mA)

An raba wutar gaba zuwa rukuni huɗu:

• F0: 2.6 – 2.8 V
• G0: 2.8 – 3.0 V
• H0: 3.0 – 3.2 V
• I0: 3.2 – 3.4 V

3.2 Rabe-raben Haske (IF=350mA)

• FA3: 30 – 35 lm
• FA4: 35 – 40 lm
• FA5: 40 – 45 lm
• FA6: 45 – 50 lm

3.3 Rabe-raben Tsawon Haske

• D00: 465 – 470 nm
• E00: 470 – 475 nm

Kuskuren awo: VF ±0.1V, λD ±1nm, haske ±10%. Rabe-rabe yana bawa abokan ciniki damar zaɓar daidai launi da haɗin flux don aikinsu.

4. Lankwasawar Aiki

4.1 Wutar Gaba kuwa Wutar Gaba

Wutar gaba tana ƙaruwa da sauri tare da wutar bayan kofa (~2.6V). A 3.0V, wutar ~350mA; a 3.4V, wutar ta kai 1500mA. Wannan halin IV mai tsauri yana buƙatar kula da wutar da kyau don guje wa wuce haddi.

4.2 Ƙarfin Haske kuwa Wutar Gaba

Fitar haske tana ƙaruwa kusan daidai da wutar har zuwa ~1000mA, sannan ta fara cikawa. A 1500mA, ƙarfin haske ya kai kimanin sau 3.0 na darajar 350mA. Duk da haka, tasirin zafi a babban wuta na iya rage inganci.

4.3 Zazzabi kuwa Ƙarfin Haske

Yayin da zazzabin wurin walda (Ts) ya tashi daga 25°C zuwa 105°C, ƙarfin haske yana raguwa da kimanin 20-30%. Bukatar hanyar zafi mai isa tana da mahimmanci don kiyaye fitar haske a aiki mai ƙarfi.

4.4 Zazzabin Ts kuwa Wutar Gaba (Ragewa)

Matsakaicin wutar gaba da aka yarda dole ne a rage yayin da zazzabi ya ƙaru: a 85°C Ts, matsakaicin wutar an rage zuwa kusan 800mA (daga 1500mA a 25°C). Wannan lankwasawar ragewa tana tabbatar da cewa zazzabin junction bai wuce 125°C ba.

4.5 Rarraba Spectrum

Fitar spectrum tana kololuwa a ~465-475nm tare da cikakken faɗi a rabin matsakaici (FWHM) na kusan 25-30nm. Spectrum ɗin ya dace da InGaN blue LEDs, ba tare da wani fitar da biyu ba.

4.6 Hoton Radiation

Tsarin radiation yana kama da Lambertian tare da rabin kusurwa digiri 60 (cikakken kusurwa 120°). Ƙarfin haske yana raguwa zuwa 50% a ±60° daga axis na haske.

5. Bayanan Injiniya da Tattara Kaya

5.1 Girman Kwano

Kwano LED yana auna 3.45mm x 3.45mm x 2.20mm (tsawon x faɗin x tsayi). Duba daga sama yana nuna wani yanki mai haske murabba'i; duba daga gefe yana nuna kauri 2.20mm wanda ya haɗa da ƙasan yumbu da ruwan tabarau na silicone. Duba daga ƙasa yana nuna filaye biyu na lantarki (anode da cathode) masu girman 1.30mm x 0.65mm da 0.50mm x 0.65mm. An samar da alamar polarity.

5.2 Tsarin Walda da Aka Shawararta

Tsarin ƙasar PCB da aka shawarar ya haɗa da filaye rectangular guda biyu: 1.30mm x 0.85mm na anode da 1.30mm x 0.50mm na cathode, tare da tazarar 0.45mm a tsakaninsu. An shawarar ƙarin filin zafi (3.50mm x 3.40mm) don jawo zafi. Duk girman suna da haƙuri ±0.2mm.

5.3 Gano Polarity

Cathode an yi masa alama da ƙaramin darare a gefen kwano. A duban ƙasa, babban fili yawanci anode ne (tabbatacce). Yin amfani da polarity mara kyau na iya lalata LED ɗin nan da nan.

6. Jagororin Walda da Hada

6.1 Tsarin Walda SMT

Tsarin SMT reflow da aka shawarar ya bi J-STD-020. Muhimman sigogi:

• Ƙimar hawa: max 3°C/s
• Preheat: 150°C zuwa 200°C na daƙiƙa 60-120
• Lokacin sama da 217°C (TL): max daƙiƙa 60
• Matsakaicin zazzabi (TP): 260°C, max daƙiƙa 10
• Lokaci a cikin 5°C na matsayi: max daƙiƙa 30
• Ƙimar sauka: max 6°C/s
• Jimlar lokaci daga 25°C zuwa matsayi: max minti 8

Reflow bai kamata ya wuce hawa biyu ba. Idan tazarar tsakanin reflows ta wuce awa 24, ana shawarar busa don cire damshin da ruwan tabarau na silicone ya sha.

6.2 Walda da Hannu

Don walda da hannu, kiyaye zazzabin ƙarfe ƙasa da 300°C kuma lokacin taɓawa ƙasa da daƙiƙa 3. An yarda da aikin walda guda ɗaya kawai. Ka guji matsa lamba akan ruwan tabarau na silicone yayin zafi.

6.3 Mu'amala da Ajiya

Ajiye LEDs a cikin jakar da aka rufe ta asali a<30°C da<75% RH. Bayan buɗewa, ya kamata a yi amfani da na'urar a cikin awanni 168 (30°C/60% RH). Idan ajiya ya wuce watanni 6 ko alamar damshi ta canza launi, busa a 60±5°C,<5% RH na akalla awanni 24 kafin amfani.

7. Bayanin Tattara Kaya da Oda

7.1 Tsarin Tattara Kaya

Tattara kaya na yau da kullun: guda 1000 a kowace reel. Girman teli: faɗin 12mm, taki 8mm, tare da aljihuna 50 marasa komai a farkon da ƙarshen. Diamita reel: 178mm ±1mm, diamita cibiya 59mm. Lakabi ya ƙunshi lambar sashi, lambar spec, lambar lot, lambar bin (flux, tsawon haske, wutar), adadi, da lambar kwanan wata. An yi amfani da jakar hana damshi tare da desiccant da alamar ESD.

7.2 Akwati na Kwali

Ana tattara reels a cikin akwatunan kwali don kariyar injiniya yayin jigilar kaya. Abokin ciniki na iya buƙatar buƙatun lakabi.

8. Shawarwarin Aiki

8.1 Tsarin Zafi

Saboda yawaitar iko (har zuwa 5.1W), sarrafa zafi mai inganci yana da mahimmanci. Yi amfani da filin zafi a kan PCB wanda aka haɗa zuwa babban yankin jan ƙarfe ko hita. Dole ne a kiyaye zazzabin junction ƙasa da 125°C. A 350mA, juriyar zafi daga junction zuwa wurin walda ya kamata ya kasance kusan 10-15°C/W (na yau da kullun). Rage wutar a yanayin zafi mai yawa yana da mahimmanci.

8.2 Tsarin Kewayawa

Koyaushe yi amfani da resistors masu iyakance wutar ko driver na wutar tsayayye don hana wuce gona da iri da canjin wutar kaɗan ya haifar. Haɗa da kariyar wutar baya (misali, diode Schottky) idan kewayawar na iya amfani da wutar baya. Don layuka daidai gwargwado, tabbatar da raba wutar daidai ta amfani da resistors guda ɗaya.

8.3 Dacewa da Kayan Aiki

Ka guji fallasa LED ɗin ga yanayi mai yawan sulfur (>100ppm), saboda sulfur na iya lalata filayen azurfa. Abubuwan bromine da chlorine a cikin kayan da ke kewaye ya kamata kowanne ya kasance ƙasa da 900ppm, kuma jimillar halogen ƙasa da 1500ppm. Zaɓi mannen da kayan da ba sa fitar da VOCs waɗanda zasu iya haifar da hazo akan ruwan tabarau na silicone.

9. Kwatanta Fasaha da Mafita Masu Rikici

Idan aka kwatanta da kwano na filastik na yau da kullun (misali, PLCC), kwano na yumbu na wannan LED yana ba da juriyar zafi kaɗan (yawanci 5-10°C/W vs 15-20°C/W), yana ba da damar wutar wuta mafi girma da kuma kiyaye haske mafi kyau. Ruwan tabarau na silicone yana ba da ingancin haske mafi girma da kusurwa mai faɗi fiye da ruwan tabarau na epoxy. Bugu da ƙari, matsayin MSL 1 yana kawar da buƙatar busa mai wahala kafin hada, yana rage lokacin samarwa. Duk da haka, kwano na yumbu suna da ɗan tsada, wanda ke daidaitacce ta hanyar aminci mafi girma a aikace-aikacen wuta mai ƙarfi.

10. Tambayoyin da Aka Yawaita

10.1 Zan iya fitar da wannan LED da 1A na ci gaba?

Ee, amma kawai idan tsarin zafi ya kiyaye zazzabin junction ƙasa da 125°C. A 1A (1000mA), wutar gaba za ta kasance kusan 3.2-3.4V, yana kaiwa kimanin 3.2-3.4W. Bukatar hanyar zafi mai kyau ta zama tilas. Duba lankwasawar ragewa: a yanayin zafi 85°C, matsakaicin wutar ~800mA.

10.2 Menene tsawon rayuwar wannan LED?

Aka yi tsammanin kiyaye haske na >70% bayan sa'o'i 50,000 a ƙarƙashin yanayin da aka kayyade (350mA, Tj<105°C). Matsakaicin wuta ko zazzabi za su rage rayuwa. Don ƙarin tsinkaya, tuntuɓi bayanan gwajin aminci (gwajin rayuwa: 1000h a 350mA/25°C ba tare da gazawa ba).

10.3 Yaya zan kula da hankalin ESD?

LED ɗin yana da matsayin ESD na 2000V HBM. Yi amfani da wuraren aiki da aka ƙasa, mundaye anti-static, da tattara kaya mai ɗaukar wuta. A lokacin mu'amala da hannu, ka guji taɓa lambobin lantarki.

11. Nazari na Aikin Zane na Aiki

Ka yi la'akari da tarkon LED shuɗi don na'urar haske na shuka. Yin amfani da LEDs 24 a kowace mita, kowanne ana fitar da shi da 350mA (jimlar ~0.84A a kowace mita), jimlar iko a kowace mita kusan 24 * 3.0V * 0.35A = 25.2W. Dole ne PCB ya kasance yana da kauri na jan ƙarfe (≥2 oz) da cibiyar aluminum don jawo zafi. Don samun rarraba haske daidai, an sanya LEDs nesa 41.6mm. Driver na wutar tsayayye tare da fitarwa 24V da iyakance wutar a kowane tasha yana tabbatar da aiki mai tsayayye. An zaɓi tsawon haske shuɗi (470nm) don matakin girma na shuka. Ba buƙatar ƙarin phosphor ba. Na'urar tana kai >90% inganci wajen canza wutar lantarki zuwa radiant flux.

12. Ka'idar Aiki

Wannan LED yana amfani da InGaN (Indium Gallium Nitride) quantum wells a matsayin Layer aiki. Idan aka tura wutar gaba, electrons da holes suna sake haɗuwa a cikin quantum wells, suna fitar da photons masu kuzari daidai da bandgap (kimanin 2.6eV don 475nm shuɗi). Substrate ɗin yawanci sapphire ne ko silicon carbide, a kan wanda ake girma epitaxial layers. Kwano na yumbu yana aiki a matsayin mai yada zafi kuma yana ba da keɓancewar lantarki. Ruwan tabarau na silicone yana rufe die don inganta fitar haske da kare chip ɗin. Bandgap kai tsaye na LED yana tabbatar da ingancin quantum na ciki yana da girma (>80% a low currents).

13. Hanyoyin Ci Gaba

Masana'antar tana motsawa zuwa inganci mafi girma da kuma haskaka launi mafi kyau a cikin LEDs farare ta hanyar haɗa LEDs shuɗi da phosphors. Duk da haka, LEDs shuɗi na musamman suna da mahimmanci don aikace-aikace na musamman kamar haske na shuka (shuɗi + ja spectra), magani na phototherapy, da haske na nishaɗi. Hanyoyin sun haɗa da ƙara ingancin haske (maƙasudin >200 lm/W ga chips shuɗi), rage juriyar zafi ta hanyar ingantattun ƙirƙirar kwano (misali, thin-film flip-chip), da haɗa kariyar ESD a cikin kwano. Karɓar rabe-rabe mai sarrafa kanshi a matakin wafer yana ba da damar rarraba launi da flux mai tsauri, yana ba da damar aiki daidai a yawan samarwa.