1. Bayanin Samfur
1.1 Bayani na Gabaɗaya
RF-RUB190TS-BD wani babban haske jan LED ne na SMD da aka yi ta amfani da jan guntu. Yana zuwa a cikin ƙaramin fakitin da girman 1.6mm x 0.8mm x 0.7mm, yana sa ya dace da aikace-aikace masu iyakacin sarari. An tsara wannan LED don amfani gabaɗaya kuma yana ba da kyakkyawan aiki a aikace-aikacen alamomi na gani da nuni.
1.2 Siffofi
- Kusurwar gani mai faɗi sosai na digiri 140.
- Ya dace da duk hanyoyin hawan SMT da walda.
- Matsayin rigar damshi: Mataki na 3 (MSL3).
- Mai biyayya da RoHS, yana tabbatar da lafiyar muhalli.
1.3 Aikace-aikace
- Alamomi na gani a cikin na'urorin lantarki na amfani.
- Hasken baya na maɓalli da alamu.
- Nuni da nuna hali na gabaɗaya.
2. Sigogin Fasaha
2.1 Halayen Wutar Lantarki da Na Gani
A yanayin zafin muhalli na 25°C da wutar gaba ta 20mA, LED ɗin yana nuna halaye masu zuwa (darajojin al'ada):
| Siga | Alama | Mafi ƙanƙanta | Na al'ada | Mafi girma | Naúrar |
|---|---|---|---|---|---|
| Faɗin Rabin Band ɗin Siftrum | Δλ | – | 15 | – | nm |
| Wutar Gaba (Bin B0) | VF | 1.8 | – | 2.0 | V |
| Wutar Gaba (Bin C0) | VF | 2.0 | – | 2.2 | V |
| Wutar Gaba (Bin D0) | VF | 2.2 | – | 2.4 | V |
| Tsayin Raƙuman Hasken Firayim (Bin F00) | λD | 625 | – | 630 | nm |
| Tsayin Raƙuman Hasken Firayim (Bin G00) | λD | 630 | – | 635 | nm |
| Tsayin Raƙuman Hasken Firayim (Bin H00) | λD | 635 | – | 640 | nm |
| Ƙarfin Hasken Haske (Bin 1BP) | IV | 30 | – | 90 | mcd |
| Kusurwar Gani | 2θ1/2 | – | 140 | – | deg |
| Wutar Baya | IR | – | – | 10 | μA |
| Juriya na Zafin Jiki (Haɗin Gwiwa zuwa Walda) | RTHJ-S | – | – | 450 | K/W |
2.2 Matsayin Ƙarfin Ƙarfi na Mafi Girma
| Siga | Alama | Ƙima | Naúrar |
|---|---|---|---|
| Ƙarfin Wuta | Pd | 72 | mW |
| Wutar Gaba | IF | 30 | mA |
| Ƙarfin Wutar Gaba na Kololuwa (Pulse) | IFP | 60 | mA |
| ESD (HBM) | ESD | 2000 | V |
| Zazzabi na Aiki | Topr | -40 zuwa +85 | °C |
| Zazzabi na Ajiya | Tstg | -40 zuwa +85 | °C |
| Zazzabi na Haɗin Gwiwa | Tj | 95 | °C |
Dole a kula kada a wuce waɗannan matsakaicin ƙima a kowane yanayi. Ya kamata a iyakance wutar gaba ta hanyar masu hana wutar da suka dace don gujewa ƙaruwar zafi mara iyaka.
3. Tsarin Rarraba
3.1 Rukunin Wutar Gaba
An ayyana rukunin wutar gaba guda uku: B0 (1.8-2.0V), C0 (2.0-2.2V), da D0 (2.2-2.4V). Kowane rukuni yana tabbatar da rarraba wutar daidai don aiki mai daidaituwa a cikin tsararraki.
3.2 Rukunin Tsayin Raƙuman Haske
An rarraba tsayin raƙuman hasken firayim zuwa rukunoni uku: F00 (625-630nm), G00 (630-635nm), da H00 (635-640nm). Wannan yana ba da damar zaɓar ainihin launin jan da ake buƙata.
3.3 Rukunin Ƙarfin Hasken Haske
An rarraba ƙarfin hasken haske a ƙarƙashin bin 1BP tare da kewayon 30 zuwa 90 mcd. Rarraba ƙarfin haske yana tabbatar da daidaituwar haske a aikace-aikacen LED masu yawa.
4. Nazarin Ƙididdigar Aiki
4.1 Wutar Gaba vs. Wutar Gaba
Kamar yadda aka nuna a Fig.1-6, wutar gaba tana ƙaruwa da wutar gaba, wani hali na al'ada ga LEDs. A 20mA, wutar tana faɗuwa a cikin kewayon rukunin.
4.2 Ƙarfin Daidaita vs. Wutar Gaba
Hoto 1-7 yana nuna cewa ƙarfin daidaita yana ƙaruwa a kan layi tare da wutar gaba har zuwa 20mA, sannan a hankali yana cika. Aiki a 20mA yana ba da daidaito mai kyau tsakanin haske da inganci.
4.3 Dogara ga Zazzabi
Hotunan 1-8 da 1-9 sun nuna cewa ƙarfin daidaita yana raguwa tare da ƙaruwar zazzabi na muhalli, kuma mafi girman izinin wutar gaba yana raguwa yayin da zazzabin fil ɗin ya tashi. Kula da zafi daidai yana da mahimmanci don kiyaye aiki da aminci.
4.4 Canjin Tsayin Raƙuman Haske
Hoto 1-10 ya nuna cewa tsayin raƙuman hasken firayim ya kasance mai daidaituwa tare da wutar gaba, yana canjawa kaɗan kaɗan a cikin kewayon rukuni a fadin 0-30mA. Wannan yana tabbatar da daidaituwar launi a yanayin aiki na al'ada.
4.5 Rarraba Siftrum
LED ɗin yana fitar da ƙaramin siftrum da ke koli kusan 625-640nm, kamar yadda Hoto 1-11 ya nuna. Cikakken faɗin rabin mafi girma kusan 15nm ne, yana ba da jan launi mai tsafta.
4.6 Tsarin Radiation
Hoto 1-12 yana nuna tsarin radiation mai faɗi tare da kusurwar gani na 140°. Ƙarfin yana faɗuwa zuwa 50% a ±70°, yana sa ya dace da aikace-aikacen alamomi inda ake son gani daga kusurwoyi da yawa.
5. Bayani na Injiniya da Fakitin
5.1 Girman Fakitin
Fakitin LED ɗin yana auna 1.6mm x 0.8mm x 0.7mm (tsawon x faɗi x tsayi). Ana nuna ainihin girma a cikin zanen fakitin (Fig.1-1 zuwa 1-4). Duk girma suna cikin millimita tare da juriya na ±0.2mm sai dai idan an faɗi in ba haka ba.
5.2 Alamar Polarity da Tsarin Walda
Ana nuna polarity ta wata alama a kan fakitin (Fig.1-4). Tsarin walda da aka ba da shawara (Fig.1-5) ya ƙunshi pads biyu: 0.8mm x 0.8mm kowanne, tare da nisa na 2.4mm. Daidaitawa daidai yana tabbatar da haɗin walda mai aminci.
6. Jagororin Walda da Haɗawa
6.1 Tsarin Walda na Reflow
LED ɗin ya dace da walda na reflow na SMT tare da tsarin da aka nuna a Fig.3-1. Mahimman sigogi: preheat daga 150°C zuwa 200°C na daƙiƙa 60-120, hawan gwargwado ≤3°C/s, lokaci sama da 217°C (TL) daƙiƙa 60-150, zazzabi na kololuwa 260°C har zuwa daƙiƙa 10. Gwargwado na sanyaya ≤6°C/s. Jimlar lokaci daga 25°C zuwa kololuwa bai kamata ya wuce mintuna 8 ba. Kada a yi reflow fiye da sau biyu.
6.2 Walda da Hannu
Idan walda da hannu ya zama dole, a kiyaye zazzabin ƙarfe ƙasa da 300°C kuma a iyakance lokacin taɓawa ƙasa da daƙiƙa 3. An yarda da ƙoƙarin walda da hannu guda ɗaya kawai.
6.3 Hattara
Bayan walda, a guji damuwa na injiniya ko sanyaya da sauri. Kada a sa kayan haɗi a kan PCBs da suka lalace. Yi amfani da ƙarfen walda mai kai biyu idan gyara ba zai yuwu ba, amma gabaɗaya ba a ba da shawarar gyara ba.
7. Bayani na Marufi da Oda
7.1 Ƙayyadaddun Marufi
Ana saka LEDs a cikin reels na guda 4000. Girman tef ɗin jigilar kaya kamar yadda Fig.2-1 ya nuna: tef mai faɗi 8mm tare da nisa na 4mm. Diamita na reel ɗin 178mm ne. Ana amfani da jakar shinge mai damshi tare da bushewa don adanawa.
7.2 Bayanin Label
Labels sun haɗa da lambar sashi, lambar ƙayyadaddar, lambar lot, lambar bin, ƙarfin haske, bin chromaticity, wutar gaba, tsayin raƙuman haske, adadi, da kwanan wata. Wannan yana ba da damar ganowa cikakke.
7.3 Yanayin Ajiya
Kafin buɗe jakar aluminum, a adana a ≤30°C da ≤75% RH har zuwa shekara 1. Bayan buɗewa, ana ba da izinin ajiya a ≤30°C da ≤60% RH na awanni 168 (kwanaki 7). Idan rayuwar aji ta wuce, a gasa a 60±5°C na awanni 24 kafin amfani.
8. Bayanan Aiki
8.1 Tsarin Kewayawa
Kowane LED yakamata ya sami mai hana wutar da ke iyakance wutar gaba don kiyaye ta cikin matsakaicin ƙimar da aka yarda. Dole ne a tsara kewayawar tuƙi ta yadda wutar gaba kawai za a yi amfani da ita yayin aiki; wutar baya na iya haifar da lalacewa.
8.2 Kula da Zafi
Rage zafi mai inganci yana da mahimmanci. Zazzabi na haɗin gwiwa bai kamata ya wuce 95°C ba. Yi la'akari da amfani da hanyoyin zafi na thermal ko heatsink idan ana aiki a babban zazzabi na muhalli ko babban wutar gaba.
8.3 Kariya daga ESD
Waɗannan LEDs suna da hankali ga ESD (HBM 2000V). Yi amfani da matakan kariya na ESD da suka dace yayin sarrafawa da haɗawa, kamar wuraren aiki da aka ƙasa da marufin antistatic.
8.4 La'akari da Muhalli
A guji fallasa LEDs ga mahaɗan sulfur da suka wuce 100PPM. Ga kayan waje, bromine da chlorine kowanne yakamata ya kasance<900PPM, kuma jimlar<1500PPM. VOCs daga mannen na iya haifar da canza launi; gwada duk kayan don dacewa.
9. Misalin Aiki na Hali
Yi la'akari da panel nuna matsayi ta amfani da RF-RUB190TS-BD LEDs da yawa. Ta zaɓar rukunin tsayin raƙuman haske na G00 (630-635nm) da kuma daidaita rukunin wutar gaba a cikin C0, ana iya samun daidaituwar haske da launi. Ana tuka kowane LED a 20mA ta hanyar mai hana wutar da ke jeri. Kusurwar gani mai faɗi yana tabbatar da gani a cikin panel. Tsarin zafi mai kyau ta amfani da zubar tagulla na PCB yana hana zafi fiye da kima.
10. Tambayoyi na Yau da Kullum
10.1 Menene wutar gaba ta al'ada a 20mA?
Wutar gaba ta al'ada tana faɗuwa a cikin kewayon 1.8 zuwa 2.4V dangane da rukuni (B0/C0/D0). Ga yawancin aikace-aikace, wutar tana kusan 2.0V.
10.2 Zan iya tuka LED a 30mA ci gaba?
Ee, matsakaicin wutar gaba na iyaka shine 30mA. Duk da haka, aiki kusa da iyaka na iya rage rayuwa idan kula da zafi bai isa ba. Ana ba da shawarar a tsaya a 20mA don aminci mafi kyau.
10.3 Yaya yanayin zafi yake shafar LED?
Fitowar haske tana raguwa a yanayin zafi mafi girma. Rage wutar gaba ya zama dole a sama da 25°C, kamar yadda Fig.1-9 ya nuna. A kiyaye zazzabin haɗin gwiwa ƙasa da 95°C.
11. Ƙa'idar Aiki
Wannan LED ya dogara ne akan jan guntu wanda ke fitar da haske ta hanyar electroluminescence. Lokacin da aka yi amfani da wutar gaba, electrons da holes suna sake haɗuwa a cikin kayan semiconductor, suna sakin photons tare da makamashi daidai da tsayin raƙuman haske na ja (625-640nm). Faɗin siftrum mai kunkuntar yana nuna tsabtar babban launin da aka fitar.
12. Hanyoyi da Ci gaba
Fasahar LED na ci gaba da canzawa zuwa mafi girman inganci, ƙananan fakitin, da kuma mafi kyawun daidaituwar launi. RF-RUB190TS-BD wakiltar ƙaramin fakitin, babban haske ne na hali na yau na LEDs na SMD. Hanyoyi na gaba na iya haɗa da ma ƙananan girma (misali, 1.0x0.5mm) da mafi girman aminci ta hanyar ingantattun kayan.