Ƙayyadaddun Far Red LED PLCC 2835 - Girma 2.8x3.5x0.65mm - Wutar Gaba 1.8-2.6V - Ƙarfi 468mW

1. Bayanin Samfurin

Wannan ƙayyadaddun ya shafi LED mai haske mai ja mai nisa (Far Red) mai girman PLCC-2 (2.8mm x 3.5mm x 0.65mm). Na'urar tana amfani da yadudduka na AlGaAs (Aluminum Gallium Arsenide) akan substrate na GaAs don samun haske mai inganci a yankin ja mai zurfi (730-740 nm). An tsara shi da farko don hasken noma, kayan aikin nama, da hasken shimfidar wuri, wannan LED yana haɗa kusurwar kallo mai fadi (digiri 120) tare da aminci mai ƙarfi wanda ya dace da hadawar SMT ta atomatik.

Mahimman fasalulluka sun haɗa da:

• Fakitin: PLCC-2, 2.8mm x 3.5mm x 0.65mm
• Tsawon igiyar kololuwa: 730-740 nm (Far Red)
• Jimlar hasken radiyo: 40-140 mW a 150 mA
• Wutar gaba: 1.8-2.6 V a 150 mA
• Kusurwar kallo: digiri 120
• Matsayin hankali ga danshi: MSL 3
• Yarda da RoHS

2. Fassarar Ma'aunin Fasaha Mai Zurfi

2.1 Halayen Lantarki da Na gani (Ts=25°C)

Dukkan ma'auni ana yin su a cikin yanayi mai daidaitattun tare da zafin wurin siyarwa na 25°C. Ana gwada LED a halin yanzu na gaba na 150 mA sai dai in an ambata.

• Wutar Gaba (VF):Ya bambanta daga 1.8 V (minti) zuwa 2.6 V (max) a 150 mA. Ba a bayar da ƙimar al'ada ba amma tana cikin kewayon binning. Haƙuri shine ±0.1 V.
• Halayen Juya (IR):Kasa da 10 µA a VR = 5 V, yana nuna ingancin junction mai kyau.
• Jimlar Hasken Radiyo (Φe):40-140 mW a 150 mA. Wannan shine jimlar ƙarfin haske da aka auna ta hanyar sararin hadewa. Haƙuri: ±10%.
• Kusurwar Kallo (2θ1/2):Digiri 120 na al'ada (cikakken nisa a rabin matsakaici), yana ba da tsarin watsawa mai faɗi wanda ya dace da haske iri ɗaya.
• Tsawon Igiyar Kololuwa (λp):730-740 nm, an tsakiya a yankin ja mai nisa mai mahimmanci don tsarin girma na shuka (phytochrome Pfr sha). Haƙuri: ±1 nm.
• Juriyar Zafi (RTHJ-S):35°C/W na al'ada daga junction zuwa wurin siyarwa, mai mahimmanci don lissafin sarrafa zafi.

2.2 Matsakaicin Ƙimar da Ba za a wuce ba

Ketare waɗannan iyakoki na iya haifar da lalacewa ta dindindin. Ya kamata a yi amfani da na'urar a cikin yankin aiki mai aminci da aka ƙayyade.

• Rushewar Ƙarfi (PD): 468 mW
• Halin yanzu na gaba (IF): 180 mA (DC)
• Matsakaicin Halin Yanzu na Gaba (IFP): 300 mA (1/10 aikin hawan keke, nisa na bugun jini 0.1 ms)
• Wutar Juya (VR): 5 V
• Rushewar Wutar Lantarki (ESD HBM): 2000 V
• Zafin Aiki (TOPR): -40 zuwa +85°C
• Zafin Ajiya (TSTG): -40 zuwa +100°C
• Zafin Junction (TJ): 115°C max

Ragewa: A yanayin zafi mai girma, dole ne a rage halin yanzu na gaba bisa ga lanƙwan zafin siyarwa da halin yanzu na gaba (Hoto 1-10) don tabbatar da zafin junction ya kasance ƙasa da 115°C.

3. Bayanin Tsarin Binning

Ana rarraba LEDs zuwa bins don wutar gaba, tsawon igiyar kololuwa, da jimlar hasken radiyo a 150 mA. Wannan yana ba abokan ciniki damar zaɓar na'urori masu kunkuntar bazuwar sigogi don daidaitaccen aikin tsarin.

3.1 Bins na Wutar Gaba (VF)

Bins takwas daga B1 zuwa E2 sun rufe kewayon 1.8-2.6 V a cikin ƙaruwa 0.1 V:

• B1: 1.8-1.9 V
• B2: 1.9-2.0 V
• C1: 2.0-2.1 V
• C2: 2.1-2.2 V
• D1: 2.2-2.3 V
• D2: 2.3-2.4 V
• E1: 2.4-2.5 V
• E2: 2.5-2.6 V

3.2 Bins na Tsawon Igiyar Kololuwa (λp)

An ayyana bins biyu:

• R25: 730-735 nm
• R26: 735-740 nm

3.3 Bins na Jimlar Hasken Radiyo (Φe)

Bins na haske biyu:

• FR: 40-90 mW
• FR2: 90-140 mW

Lura: Ana jera haɗin VF, tsawon igiya, da bins na haske akan kowace lakabin reel don gano asali.

4. Binciken Lanƙwan Aiki

4.1 Wutar Gaba vs. Halin Yanzu na Gaba (Hoto 1-7)

Hotunan suna nuna halayyar I-V mai girma. A 150 mA, VF yana kusan 2.0-2.2 V (tsakiyar kewayon). Lanƙwan yana da tsayi, yana jaddada buƙatar tuƙi mai sarrafa halin yanzu don guje wa guduwar zafi.

4.2 Ƙarfin Dangi vs. Halin Yanzu na Gaba (Hoto 1-8)

Fitowar haske yana ƙaruwa daidai gwargwado da halin yanzu har zuwa kusan 120 mA, sannan ya ɗan jike a manyan halin yanzu saboda dumamar junction. A 150 mA, ƙarfin dangi yana kusan 90% na darajar a 120 mA.

4.3 Dogaro da Zazzabi (Hoto 1-9, 1-10, 1-11, 1-12)

• Hasken Dangi vs. Zafin Siyarwa:Yayin da zafin jiki ya tashi daga 20°C zuwa 100°C, hasken dangi yana raguwa da kusan 30% (na al'ada ga AlGaAs LEDs).
• Matsakaicin Halin Yanzu na Gaba vs. Zazzabi:Don kiyaye TJ ≤ 115°C, dole ne a rage halin yanzu na gaba idan ya fi 60°C. Misali, a 85°C, IF bai kamata ya wuce 120 mA ba.
• Wutar Gaba vs. Zazzabi:VF yana raguwa daidai gwargwado da zazzabi (kusan -2 mV/°C), wanda ya zama na al'ada ga LEDs.
• Tsawon Igiya vs. Zazzabi:Tsawon igiyar kololuwa yana canzawa kaɗan zuwa tsawon igiya mafi tsawo (ja-ƙaura) tare da ƙaruwar zazzabi, kusan +0.03 nm/°C.

4.4 Rabawar Bakan (Hoto 1-13)

Bakan haske yana da kunkuntar (FWHM kusan 20-25 nm) wanda aka tsakiya a 730-740 nm. Kololuwa ya dace da kololuwar sha na phytochrome Pfr na shuka (730 nm), yana sa ya dace da sarrafa tsawon lokaci na haske a cikin noma.

4.5 Hoton Radiyo (Hoto 1-14)

Tsarin watsawa yana kama da Lambertian, tare da ƙarfin dangi yana faduwa zuwa 50% a ±60 digiri daga axis, yana tabbatar da kusurwar kallo na digiri 120.

5. Bayanin Injiniya da Marufi

5.1 Girman Fakitin

Fakitin PLCC-2 yana da sawun kallon sama na 2.80 mm x 3.50 mm, tare da tsayi na 0.65 mm. Kallon ƙasa yana nuna pads anode/cathode guda biyu (A: Anode, C: Cathode) tare da alamar polarity a saman. Haƙuri ±0.2 mm sai dai in an ambata.

5.2 Tsarin Siyarwa

Ana ba da pads na siyarwa da aka ba da shawarar a Hoto 1-5. Tsarin ya haɗa da pads rectangular guda biyu masu girman 1.90 mm x 2.10 mm (anode) da 2.10 mm x 1.90 mm (cathode) don dacewa da ƙarshen ƙasa.

5.3 Gano Polarity

Akwai alamar polarity bayyananne (notch ko dige) a saman saman. Cathode yawanci shine mafi girman pad (duba Hoto 1-4).

6. Jagororin Siyarwa da Haɗawa

6.1 Bayanin Siyarwa na Reflow

Shawarar bayanin reflow (Hoto 3-1) ya dace da ka'idojin JEDEC. Mahimman sigogi:

• Matsakaicin hawan hawan: 3°C/s
• Preheat: 150-200°C na 60-120 s
• Lokaci sama da 217°C (TL): 60 s max
• Matsakaicin zafin jiki (TP): 260°C na 10 s max
• Matsakaicin sanyaya: 6°C/s
• Jimlar lokaci daga 25°C zuwa TP: ≤8 mintuna

An yarda da zagayowar reflow guda biyu kawai. Siyarwa da hannu: zafin ƙarfe<300°C,<3 seconds, sau ɗaya kawai.

6.2 Sarrafa Danshi

LEDs suna da hankali ga danshi (MSL 3). Kafin buɗe jakar aluminium: ajiye<30°C / 75% RH, amfani a cikin shekara 1. Bayan buɗewa:<30°C / 60% RH, amfani a cikin sa'o'i 24. Idan ya wuce, gasa a 60±5°C na ≥24 sa'o'i kafin amfani.

6.3 Tsabtacewa da Kariya

Abun rufe silicone yana da laushi; guje wa matsin lamba na inji akan lens. Yi amfani da isopropyl alcohol kawai don tsabtacewa; ba a ba da shawarar tsabtacewa ultrasonic ba. Dole ne a guji adhesives da ke fitar da tururi na kwayoyin halitta. Kariyar antistatic wajibi ne (hankalin ESD 2000 V HBM).

7. Bayanin Marufi da Oda

7.1 Ƙayyadaddun Marufi

Kowace reel tana ƙunshe da guda 4000 (max). Girman tef ɗin ɗauka an bayyana shi a Hoto 2-1, tare da alamar jagorar ciyarwa da alamar polarity. Girman reel: diamita 178 mm (tare da hub 13.5 mm), faɗi 10.5 mm. Jakar antistatic da akwatin kwali (Hoto 2-2 zuwa 2-5).

7.2 Bayanin Lakabi

Kowace reel tana da lakabi da Lambar Sashe, Lambar Spec, Lambar Lot, Lambar Bin (ciki har da bin VF, bin tsawon igiya, bin haske), Yawa, da lambar Kwanan wata.

Misalin lambar sashe:RF-AL-T28352H0FR-00(coding package, color, da flux/wavelength bin).

8. Shawarar Aikace-aikace

Wannan LED Far Red ya dace sosai don:

• Masana'antun Shuka:Hasken ƙari a gonaki na tsaye don inganta fure da 'ya'ya (hulɗar phytochrome).
• Naman Shuka:Tushen haske ɗaya don yaduwa a cikin vitro ba tare da lalacewa ta zafi ba.
• Hasken Wuri:Hasken ƙari tare da ja mai zurfi don lambuna ko fasalin gine-gine.
• Hasken Gabaɗaya:Ana amfani da shi tare da LEDs ja mai zurfi / shuɗi don ƙirƙirar na'urorin noma masu faɗin bakan.

La'akari da ƙira:

• Koyaushe yi amfani da resistor iyakance halin yanzu ko direban halin yanzu akai-akai don hana wuce gona da iri.
• Tabbatar da isasshen zubar da zafi a pads na siyarwa don kiyaye zafin junction ƙasa da 115°C.
• Don shirye-shirye, yi la'akari da faɗuwar ƙarfin lantarki a cikin dogon layi da rashin daidaituwa na raba halin yanzu saboda yaduwar bin VF.
• Guji fallasa lens silicone ga yawan sulfur, chlorine, ko bromine (iyaka: S<100 ppm, Br/Cl ɗaya<900 ppm, jimlar Br+Cl<1500 ppm).

9. Kwatanta Fasaha da Fasahar Gasa

Idan aka kwatanta da ja na AlGaInP na yau da kullun (630-660 nm), LED Far Red na AlGaAs yana ba da ingantacciyar haske a band 730-740 nm. Wannan tsawon igiya yana buƙatar musamman don amsawar phytochrome Pfr, wanda ba a iya samuwa da LEDs ja na yau da kullun ba. AlGaAs kuma yana nuna kwanciyar hankali mafi kyau fiye da AlGaInP a yankin ja mai nisa, kodayake sarrafa zafi yana da mahimmanci.

10. Tambayoyi da Yawaita

1. Zan iya fitar da wannan LED a 200 mA?Matsakaicin ƙayyadaddun shine 180 mA ci gaba. Fitarwa a 200 mA na iya wuce ƙimar zafin junction idan ba a yi la'akari da juriyar zafi ba. Ba a ba da shawarar ba.
2. Menene ingantaccen inganci (mW/mA)?A 150 mA, hasken radiyo yana kusan ~90 mW (tsakiyar bin na al'ada), yana ba da ~0.6 mW/mA. Inganci yana raguwa tare da halin yanzu saboda faduwa.
3. Yaya zan zaɓi bin da ya dace don ƙira ta?Don tsawon igiya daidai, zaɓi R25 ko R26. Don daidaitaccen haske, zaɓi FR ko FR2. Don daidaita ƙarfin lantarki a cikin layin jerin, zaɓi kunkuntar bin VF.
4. Shin wannan LED ya dace da kayan aikin SMT pick-and-place na yau da kullun?E, fakitin PLCC-2 daidai ne kuma ana iya sarrafa shi da yawancin injuna tare da bututun da ya dace (guje wa matsin lamba akan lens silicone).

11. Nazarin Aikace-aikace Mai Aiki

Misali: Noman Latas a Cikin Gida
Masana'antar shuka da ke amfani da 20% blue (450 nm) da 80% far-red (730 nm) LEDs a jimlar PPFD na 200 µmol/m²/s ya ƙara yawan latas da 15% idan aka kwatanta da 70% ja (660 nm) + 30% blue bakan. Bangaren far-red ya inganta faduwar ganye da kuma hanzarta zagayowar girma. An fitar da LEDs a 120 mA (don kasancewa cikin iyakokin zafi) kuma an ɗora su akan PCBs na aluminum-core tare da thermal vias. Ba a lura da gazawa bayan sa'o'i 10,000 ba.

12. Ka'idar Aiki

LED yana dogara ne akan double-heterostructure (DH) AlGaAs p-n junction wanda aka girma akan GaAs substrate. Lokacin da aka tura shi gaba, electrons da holes suna sake haɗuwa ta hanyar radiyo a cikin yanki mai aiki, suna fitar da photons tare da makamashi daidai da bandgap na AlGaAs (~1.7 eV, yana ba da ~730 nm). Fakitin PLCC yana ba da rami mai haske don fitar da haske daga sama, yayin da lens silicone ke kare guntu da kuma haɓaka fitar da haske. Babban bandgap na yadudduka na cladding yana ƙuntata masu ɗauka yadda ya kamata, yana ba da babban ingantaccen aiki na ciki.

13. Hanyoyin Fasaha da Hasashen Gaba

Bukatar LED Far Red yana girma da sauri tare da faɗaɗa aikin noma mai sarrafa yanayi. Sabbin abubuwa suna mai da hankali kan inganta ingantaccen wuta-bango (a halin yanzu ~25-35%) da rage juriyar zafi ta hanyar ci-gaba marufi (misali, substrates na yumbu, flip-chip). Abubuwan da ke zuwa sun haɗa da haɗin kai tare da na'urori masu auna firikwensin don sarrafa bakan rufaffiyar madauki da tsarin multi-junction wanda ya haɗa da masu fitar da blue da far-red a cikin fakiti ɗaya. Tsarin kayan AlGaAs ya kasance mai rinjaye don ja mai zurfi, tare da ƙarin haɓakawa a cikin halin faduwa da ake tsammani.