LED Ja 3.0x3.0x2.1mm - 2.2V - 1.1W - 620nm Bayanin Fasaha

1. Bayanin Samfur

RF-E30AG-OUH-FS LED ja mai ƙarfi ne da ke amfani da fakitin EMC (Epoxy Molding Compound) wanda ke ba da aminci mai kyau da aikin zafi. Tare da ƙaramin girma na 3.00mm x 3.00mm da tsawo na 2.10mm, wannan na'urar an tsara ta don aikace-aikace da yawa ciki har da sa ido na tsaro, na'urori masu gani, hasken shimfidar wuri, da alamomin gani gabaɗaya. LED ɗin ya dace da RoHS kuma an ƙididdige shi don matakin damshi na 3 (MSL 3), yana mai da shi dacewa da aikin sake haɗawa mara gubar.

2. Bayanin Injiniya da Girman Fakitin

2.1 Fuskokin Fakitin

LED ɗin yana cikin fakitin hawa-samfur mai girma 3.00mm x 3.00mm x 2.10mm (tsawo x faɗi x tsawo). Duba daga sama yana nuna ruwan tabarau mai haske tare da alamomin polarity: pad ① shine anode kuma pad ② shine cathode. Duba daga gefe yana nuna jimlar tsawo na 2.10mm. Duba daga ƙasa yana nuna shimfidar pad ɗin haɗawa tare da girma: pad ɗin anode yana da 2.26mm x 0.69mm kuma pad ɗin cathode yana da 1.45mm x 0.50mm, tare da tazara na 0.46mm tsakanin pads biyu. An samar da tsarin haɗawa da aka ba da shawara don tabbatar da yaduwar zafi da kwanciyar hankali na injiniya. Duk girma suna da haƙuri na ±0.2mm sai dai in an faɗi haka.

3. Halayen Lantarki da Gani

3.1 Wutar Gaba da Guguwa

A yanayin gwaji na IF = 500mA da Ts = 25°C, wutar gaba (VF) tana da ƙimar al'ada ta 2.2V, tare da mafi ƙanƙanta 1.8V kuma mafi girma ba a bayyana ba (buɗe). Na'urar tana iya ɗaukar mafi girman guguwar gaba ta 500mA da hasarar wuta har zuwa 1.1W. Wutar baya an ƙididdige ta a mafi girman 5V, kuma guguwar baya (IR) a VR = 5V ita ce mafi girman 10µA.

3.2 Aikin Gani

Tsawon raƙuman ruwa mai rinjaye (λD) shine 620nm (ja) tare da ƙimar al'ada da bandwidth (Δλ) na 30nm. Haske mai haske (Φ) a 500mA shine 45lm na al'ada. Kusurwar gani (2θ1/2) ita ce digiri 90, tana ba da katako mai faɗi wanda ya dace da aikace-aikacen alama da haskakawa. Juriya na zafi daga haɗin gwiwa zuwa wurin haɗawa (RTHJ-S) shine 14°C/W, yana tabbatar da canja wurin zafi mai inganci.

3.3 Mafi Girman Ƙima

Mafi girman ƙima sune kamar haka: Hasarar wuta 1.1W, guguwar gaba 500mA (tare da la'akari da raguwa), wutar baya 5V, fitar da lantarki a tsaye (HBM) 2000V, zazzabi na aiki -40°C zuwa +85°C, zazzabi na adanawa -40°C zuwa +100°C, da zazzabi na haɗin gwiwa 115°C. Lura cewa don aikin bugun jini (duty cycle 1/10, faɗin bugun jini 0.1ms), ana iya halatta guguwa mafi girma amma dole ne kada ta wuce iyakar zazzabin haɗin gwiwa.

4. Lafuzzan Halayen Gani na Al'ada

4.1 Wutar Gaba vs. Guguwar Gaba

Lafuzzan IV na al'ada yana nuna dangantaka marar mizani. A ƙananan guguwa (<100mA), wutar gaba tana tashi da sauri, yayin da sama da 200mA gangara ta ragu, yana nuna juriya ohm na die da fakitin. A 500mA, wutar gaba tana kusan 2.2V.

4.2 Guguwar Gaba vs. Ƙarfin Dangantaka

Fitowar haske mai dangantaka tana ƙaruwa kusan mizani tare da guguwar gaba har zuwa 500mA. Babu wani tasirin gamsuwa a bayyane a cikin kewayon ƙayyadaddun, yana nuna cewa ana iya fitar da LED da inganci a ƙimar guguwarta.

4.3 Zazzabi vs. Ƙarfin Dangantaka

Fitowar haske tana raguwa tare da ƙaruwar zazzabin wurin haɗawa. A 85°C, ƙarfin dangantaka ya faɗi zuwa kusan 75% na ƙimarsa a 25°C. Dole ne a yi la'akari da wannan raguwar zafi a cikin tsarin tsari.

4.4 Rarraba Spectrum

Rarraba ikon bakan yana nuna kololuwa a kusan 620nm tare da cikakken faɗi a rabin mafi girman (FWHM) na 30nm. Launi ja ne mai tsabta, wanda ya dace da ishara da haskakawa na ado.

4.5 Zane na Radiation

Tsarin radiation ya kama da Lambertian, tare da ƙarfin da ke faɗuwa zuwa 50% a ±45° daga gashin gani. Wannan yana ba da katako mai faɗi, mai haske mai daidaito.

4.6 Zazzabin Wurin Haɗawa vs. Guguwar Gaba

Mafi girman guguwar gaba da aka halatta tana raguwa yayin da zazzabin wurin haɗawa ya tashi. A 85°C, ana rage shawarar guguwa zuwa kimanin 350mA don kiyaye haɗin gwiwa ƙasa da mafi girman ƙimarsa.

5. Abubuwan Gwajin Aminci da Yanayi

LED ɗin an cancanta ta jerin gwaje-gwajen aminci bisa ka'idodin JEDEC. Gwaje-gwajen mahimmanci sun haɗa da:

• Sake haɗawa da reflow: 260°C mafi girma na daƙiƙa 10, zagaye 3, 0 gazawa daga cikin samfurori 10.
• Zagayen zazzabi: -40°C zuwa 100°C, zagaye 300, 0 gazawa.
• Girgizar zafi: -40°C zuwa 100°C, zagaye 100, 0 gazawa.
• Adanawa a babban zazzabi: 100°C na sa'o'i 1000, 0 gazawa.
• Adanawa a ƙananan zazzabi: -40°C na sa'o'i 1000, 0 gazawa.
• Gwajin rayuwa: 25°C, IF=500mA na sa'o'i 1000, 0 gazawa.

Ma'aunin gazawa: karuwar wutar gaba >1.1x babban iyaka, guguwar baya >2x babban iyaka, ko haske mai haske<0.7x ƙananan iyaka.

6. Bayanin Tattara Kaya

LEDs an tattara su a cikin sigar tef da reel tare da guda 3000 a kowace reel. Tef ɗin jigilar yana da takamaiman ƙirar aljihu tare da alamar polarity. Girman reel: diamitar flange 330.2±2mm, diamitar hub 79.5±1mm, faɗi 14.3±0.2mm, da kauri 12.7±0.3mm. Kowace reel an rufe ta a cikin jakar hana damshi tare da bushewa da katin nuna damshi. Girman akwatin cardboard na waje an nuna shi a cikin ƙayyadaddun (ba a jera shi a fili a cikin PDF ba amma na al'ada ne don reels 330mm). Label ɗin ya haɗa da lambar sashi, lambar spec, lambar lot, lambar bin, haske mai haske, tsawon raƙuman ruwa mai rinjaye, wutar gaba, yawa, da lambar kwanan wata.

7. Jagororin Haɗawa da Tattara

7.1 Lafuzzan Sake Haɗawa da SMT Reflow

LED ɗin ya dace da sake haɗawa mara gubar. Lafuzzan da aka ba da shawara yana da sigogi masu zuwa:

• Matsakaicin hawan hawa: 3°C/s mafi girma (daga Tsmax zuwa Tp)
• Preheat: 150°C zuwa 200°C na daƙiƙa 60-120
• Lokaci sama da 217°C: daƙiƙa 60 mafi girma
• Matsakaicin zazzabi: 260°C, lokaci a cikin 5°C na kololuwa: daƙiƙa 30 mafi girma, cikakken lokacin kololuwa (tp): daƙiƙa 10 mafi girma
• Matsakaicin sanyaya: 6°C/s mafi girma
• Lokaci daga 25°C zuwa kololuwa: minti 8 mafi girma

Sake haɗawa da reflow bai kamata ya wuce sau biyu ba. Idan an wuce sa'o'i 24 tsakanin wucewar farko da ta biyu, LEDs na iya sha ruwa da lalacewa. Ana halatta haɗawa da hannu tare da zazzabin tip ɗin ƙarfe na haɗawa ƙasa da 300°C na ƙasa da daƙiƙa 3, sau ɗaya kawai. An hana aikin gyara; idan ya zama dole, yi amfani da ƙarfe mai kai biyu kuma a tabbatar da tsarin.

7.2 Taka Tsantsan

• Rufin LED ɗin silicone ne, mai laushi. Guji matsa lamba akan saman ruwan tabarau yayin ɗauka da sanyawa ko tattara. Yi amfani da nozzles masu dacewa da ƙarfin da ya dace.
• Kada a saka LEDs a kan allon PCB da aka lanƙwasa ko kuma a lanƙwasa allon bayan an haɗa.
• Guji damuwa na injiniya ko girgiza yayin sanyaya bayan haɗawa.
• Yanayin aiki da kayan haɗin gwiwa dole ne su ƙunshi mahadi na sulfur ƙasa da 100PPM, abun ciki na bromine ƙasa da 900PPM, abun ciki na chlorine ƙasa da 900PPM, da jimlar bromine+chlorine ƙasa da 1500PPM.
• Abubuwan da ke iya ƙonewa (VOCs) daga kayan ƙarfi na iya shiga cikin silicone kuma su haifar da canza launi. Gwada duk kayan don dacewa kafin amfani.
• Yi amfani da kariyar ESD mai dacewa; LED ɗin an ƙididdige shi don 2000V HBM amma har yanzu ana buƙatar taka tsantsan.
• Yanayin adanawa: kafin buɗe jakar aluminum, adana a ≤30°C da ≤75% RH har zuwa shekara 1. Bayan buɗewa, yi amfani da shi cikin sa'o'i 168 a ≤30°C da ≤60% RH. Idan ya wuce, gasa a 60±5°C na ≥ sa'o'i 24.
• Tsaftacewa: ana ba da shawarar isopropyl alcohol. Dole ne a tabbatar da sauran sauran abubuwan narkewa basa lalata fakitin. Ba a ba da shawarar tsaftacewa ta ultrasonic ba.

8. La'akari da Aikace-aikace

Wannan LED an tsara shi don alamomin gani, hasken shimfidar wuri, da haskakawa gabaɗaya. Lokacin tsara kewaye na tuƙi, koyaushe haɗa resistor mai iyakance guguwa don hana wuce gona da ɓalle saboda bambancin wuta. Tsarin zafi yana da mahimmanci: dole ne zazzabin haɗin gwiwa ya wuce 115°C. Tabbatar da isasshen nutsewar zafi, musamman lokacin aiki a manyan guguwa. Kusurwar gani mai faɗi (90°) da haske mai haske (45lm a 500mA) ya sa ya dace da haskakawar yanki da haskakawar baya. Launi 620nm ja yana da kyau ga fitilun faɗakarwa, alamun hanya, da aikace-aikacen ado. Don aikin bugun jini, dole ne a sarrafa duty cycle da guguwar kololuwa a hankali don gujewa wuce mafi girman zazzabin haɗin gwiwa.

9. Ka'idar Aiki

LED ɗin ya dogara ne akan haɗin p-n semiconductor da aka yi da tsarin kayan AlGaInP (aluminum gallium indium phosphide), wanda ya zama na al'ada ga tsawon raƙuman ruwa ja. Lokacin da aka tuƙa gaba, electrons suna sake haɗuwa da ramuka a cikin yanki mai aiki, suna sakin makamashi a cikin nau'ikan photons tare da tsawon raƙuman ruwa da ya dace da bandgap na kayan. Fakitin EMC yana ba da rufi mai ƙarfi, mai ƙarancin damuwa wanda ke kare die kuma yana ba da damar fitar da haske mai inganci ta ruwan tabarau na silicone mai haske.

10. Hanyoyin Ci Gaba

Yanayin a cikin LEDs masu ƙarfi yana zuwa ga mafi girman inganci, mafi kyawun sarrafa zafi, da ƙananan girma. Wannan samfurin, tare da fakitin EMC da sigar 3.0x3.0mm, ya dace da motsin masana'antu zuwa na'urori masu hawa-samfur masu ƙarfi da aminci. Ci gaba na gaba na iya haɗawa da mafi girman haske mai haske da ingantacciyar kwanciyar hankali na launi. Amfani da rufin silicone maimakon epoxy shima yanayi ne na yanzu don inganta aminci a ƙarƙashin zagayen zafi da fallasa UV.