Takardar Bayanin Fasaha ta LED Farar Gaskiya 2014 PLCC-2 - Girman 2.0x1.4x1.3mm - Ƙarfin Lantarki 2.7-3.3V - Wutar 0.099W

1. Duba na Kayan Aiki

Wannan takarda tana ba da cikakkun bayanai na fasaha don kyakkyawan fitilar LED (Light-Emitting Diode) mai farin haske da aka ƙera don aikace-aikacen fasahar haɗawa a saman allo (SMT). An gina na'urar ta amfani da guntuwar LED shuɗi wadda aka haɗa tare da shafi na phosphor don samar da farin haske, an lulluɓe shi a cikin ƙaƙƙarfan kuma abin dogaro marufin PLCC-2 (Plastic Leaded Chip Carrier).

1.1 Bayanin Gabaɗaya

LED ɗin yana da daidaitaccen marufin PLCC-2 tare da girma na tsawon milimita 2.0, faɗin milimita 1.4, da tsayin milimita 1.3. Wannan ƙaramin siffar yana sa ya dace da tsararrun allo na PCB masu yawa. Ana samun samar da farin haske ta hanyar haɗa guntuwar semiconductor shuɗi tare da ƙayyadaddun tsari na phosphor, yana ba da damar samar da launi mai daidaito a cikin yanayi daban-daban na aiki.

1.2 Siffofi na Musamman

• Nau'in marufin PLCC-2 don ƙwararrun aikin injiniya da na lantarki.
• Matsakaicin faɗin kallo mai miliyan 120, yana tabbatar da rarraba haske iri ɗaya.
• Yana da cikakkiyar dacewa da daidaitattun tsarin haɗawa na SMT da harkokin sake narkar da guduro.
• Ana bayarwa a kan tef da reel don masana'antar ƙirƙira ta atomatik.
• Matsayin Hanzarin Danshi (MSL) an kimanta shi a matakin 3, yana buƙatar adana abin cikin sarrafawa.
• Ya yi daidai da umarnin RoHS (Ƙuntata Abubuwan da ke da Hadari).

1.3 Aikace-Aikace

Wannan LED ɗin yana da yawa kuma an ƙera shi don yawan aikace-aikacen haske, gami da amma ba'a iyakance su ba: hasken kayan ado da tsiri; fitilun nuni a cikin kayan aikin gida da kayan aikin lantarki; hasken gabaɗaya a cikin gidajen haya, kasuwanni, ofisoshi, da wurin zama; da kowane aikace-aikacen da ke buƙatar ingantaccen, ƙaramin tushen farin haske.

2. Bincike Mai Zurfi na Ma'auni na Fasaha

Cikakkiyar fahimtar ƙayyadaddun lantarki da na haske yana da mahimmanci don nasarar haɗawa cikin kowane ƙira. Duk ƙimar an ƙayyade su a daidaitattun zazzabi na haɗuwa (Ts) na 25°C sai dai an nuna in ba haka ba.

2.1 Halayen Lantarki da Hasken Hasken

Matsakaicin ƙarfin lantarki na gaba (VF) yana daga mafi ƙanƙanta na 2.7V zuwa mafi girma na 3.3V lokacin da aka tuka shi a daidaitaccen gwajin naɗi na 20mA. Wannan ma'auni yana da mahimmanci don ƙirar wutar lantarki. An tabbatar da cewa madaidaicin naɗin baya (IR) yana ƙasa da 10µA a ƙarfin lantarki na baya na 5V, yana nuna kyakkyawan halayen diode. Fitowar haske ya bambanta tare da kwandon zazzabi mai alaƙa da launi (CCT). Misali, LED ɗin da ke cikin kwandon 1725-1900K (farar haske mai dumi) suna da matsakaicin fitilar haske na lumen 3-7 a 20mA, yayin da fararen haske masu sanyi (misali, 5925-7150K) suna ba da lumen 5-9. Fihirisar nuna launi (Ra) an ƙayyade shi a mafi ƙarancin 90, yana tabbatar da kyakkyawan amincin launi don abubuwan da aka haskaka.

2.2 Matsakaicin Ma'auni na Cikakke

Waɗannan ma'auni suna bayyana iyaka duk da cewa lalacewar dindindin na iya faruwa. Matsakaicin ci gaba naɗi na gaba (IF) shine 30mA. Matsakaicin naɗin gaba (IFP) na iya kaiwa 100mA a ƙarƙashin yanayi na bugun jini (1/10 aikin biyan kuɗi, 0.1ms faɗin bugun jini). Matsakaicin raguwar wutar lantarki (PD) shine 99mW. Na'urar na iya jure fitowar lantarki na tsirara (ESD) na 2000V (Samfurin Jikin Mutum), kodayake ana ba da shawarar daidaitattun hanyoyin sarrafa ESD. Matsakaicin zazzabi na aiki yana daga -40°C zuwa +85°C, kuma matsakaicin zazzabi na adana yana daga -40°C zuwa +100°C. Matsakaicin zazzabin haɗuwa (TJ) shine 97°C.

2.3 Halayen Zazzabi

Juriya na zazzabi daga haɗuwa zuwa madaidaicin guduro (RTHJ-S) yawanci shine 80°C/W. Wannan ƙimar tana da mahimmanci don ƙididdigar sarrafa zazzabi. Fiye da matsakaicin zazzabin haɗuwa zai rage fitowar haske da rayuwar aiki sosai. Dole ne masu ƙira su tabbatar da isasshen yanki na tagulla na PCB da yuwuwar kushewar zafi idan ana aiki a yanayin zafi mafi girma ko tuki naɗi.

3. Bayanin Tsarin Kwandon

Don tabbatar da daidaito na launi da haske a cikin samar da yawa, ana rarraba LED ɗin zuwa kwanduna dangane da ma'auni masu mahimmanci.

3.1 Matsakaicin Ƙarfin Lantarki na Gaba da Kwandon Ƙarfin Hasken

Ana saka ƙarfin lantarki na gaba a cikin matakai na 0.1V daga 2.7-2.8V (J1) har zuwa 3.2-3.3V (I1). Ana saka fitilar haske a cikin matakai na lumen 1, wanda aka saka lamba daga WGD (3-4 lm) zuwa OEA (8-9 lm). Wannan tsarin kwandon biyu yana ba masu ƙira damar zaɓar abubuwan da suka dace da takamaiman buƙatun ƙarfin lantarki da haske don daidaita da'irar da daidaiton ƙira.

3.2 Matsakaicin Zazzabi mai Alaƙa da Launi

Ana samun samfurin a cikin ƙayyadaddun matsakaicin zazzabi mai alaƙa da launi (CCT) da yawa, kowannensu yana da lambar ɓangaren sa. Waɗannan sun haɗa da farar haske mai dumi (1725-1900K, 2250-2475K), farar haske ta tsaka-tsaki (2600-2870K, 2780-3110K), da farar haske mai sanyi (3760-4330K, 5925-7150K). Ana nuna takamaiman wuraren kwandon a kan zane na CIE 1931 chromaticity, yana nuna ƙaƙƙarfan sarrafa canjin wurin launi a cikin kowane kewayon.

4. Binciken Lankwasa Aiki

Bayanan zane suna ba da fahimtar halayen na'urar a ƙarƙashin yanayi daban-daban.

4.1 Matsakaicin Ƙarfin Lantarki na Gaba da Naɗin Gaba

Lankwasa halayen yana nuna alaƙar da ba ta da layi tsakanin ƙarfin lantarki na gaba (VF) da naɗin gaba (IF). Yayin da naɗin ke ƙaruwa daga 0 zuwa 30mA, ƙarfin lantarki na gaba yana tashi a hankali daga kusan 2.8V zuwa sama da 3.2V. Wannan lankwasa yana da mahimmanci don ƙira masu tukin naɗi akai-akai don tabbatar da ingantacciyar fitowar haske kuma a guje wa guduwar zafi.

4.2 Naɗin Gaba da Ƙarfin Dangi

Wannan lankwasa yana nuna fitowar haske na dangi a matsayin aikin naɗin tuki. Ƙarfin yana ƙaruwa tare da naɗi. Misali, ninka naɗin daga 15mA zuwa 30mA ba ya ninka fitowar haske, yana nuna raguwar inganci a mafi girma naɗi saboda ƙarin zazzabin haɗuwa da sauran abubuwa. Ana ba da shawarar aiki kusa da na 20mA na yau da kullun don mafi kyawun inganci da tsawon rayuwa.

5. Bayanin Injiniya da Marufi

5.1 Girman Marufi

An ba da cikakkun zane-zane masu girma, gami da saman, gefe, ƙasa, da ra'ayoyin polarity. Ma'auni masu mahimmanci sun haɗa da girman jiki na milimita 2.0 x milimita 1.4, tsayin gabaɗayan milimita 1.3, da faɗin jagorar milimita 0.6 ± 0.05mm. Duk masu jurewa yawanci ±0.2mm sai dai an ƙayyade in ba haka ba. Hakanan an nuna daidaitaccen tsarin ƙasa na guduro akan PCB don tabbatar da ingantaccen guduro da ƙarfin injiniya.

5.2 Polarity da Tsarin Guduro

An yiwa cathode alama a sarari, yawanci ta hanyar ɓangare ko alamar kore akan marufi. Dole ne a kiyaye daidaitaccen polarity yayin haɗawa. Zanen tsarin guduro yana nuna mafi kyawun ƙirar ɗigon tagulla don sake narkar da guduro, wanda ke taimakawa wajen cimma ingantattun fillets na guduro da sarrafa zafi yayin aikin guduro.

6. Jagororin Guduro da Haɗawa

6.1 Umarnin Guduro Sake Guduro SMT

An ƙera kayan aikin don daidaitattun hanyoyin sake guduro infrared ko iska. Dole ne a bi daidaitaccen bayanin martabar sake guduro, tare da matakan dumama, jiƙa, sake guduro, da sanyaya. Matsakaicin zazzabi yayin sake guduro dole ne bai wuce matsakaicin zazzabi da aka yarda da shi don marufi (kamar yadda aka nuna ta hanyar zazzabin ajiya) don hana lalacewar lulluɓin filastik da haɗin waya na ciki. Dole ne a sami takamaiman lokacin da ya wuce ruwa (TAL) da shawarwarin matsakaicin zazzabi daga jagororin SMT na gabaɗaya don abubuwa masu kama da su.

6.2 Kula da Kariya

Saboda ƙimar MSL Mataki na 3, dole ne a gasa na'urorin kafin guduro idan an buɗe jakar shinge na danshi fiye da sa'o'i 168 a ƙarƙashin yanayin ɗakin masana'anta (30°C/60%RH). Guje wa matsin injiniya akan ruwan tabarau. Yi amfani da bututun ɗaukar iska mai girman da ya dace yayin sarrafa atomatik. Koyaushe ku lura da kariyar ESD a duk matakan sarrafawa da haɗawa.

7. Bayanin Marufi da Oda

7.1 Ƙayyadaddun Marufi

Ana ba da LED ɗin akan tef mai ɗaukar kaya da aka ɗora akan reels. Girman tef ɗin mai ɗaukar kaya, girman aljihu, da diamita na reel an daidaita su don dacewa da kayan aikin sanyawa ta atomatik. Cikakkiyar lakabi akan reel tana ƙayyade lambar ɓangare, adadi, lambar kuri'a, da lambobin kwandon.

7.2 Marufin Mai Juriya Danshi

Ana sanya reels a cikin jakunkuna masu rufewa, masu shinge na danshi tare da desiccant da katin nuna danshi don kare abubuwan daga danshin yanayi yayin ajiya da sufuri, daidai da buƙatun MSL3.

7.3 Gwajin Dogara

Samfurin yana ɗaukar jerin gwaje-gwaje na dogara, waɗanda zasu iya haɗawa da ajiyar zafi mai yawa, ajiyar ƙananan zazzabi, kewayawar zazzabi, gwajin danshi, da juriya na zafi na guduro. Takamaiman yanayin gwaji da ma'auni na wucewa/rasuwa suna tabbatar da ƙarfin ƙarfi da tsawon rayuwar kayan aikin a fagen.

8. Shawarwari na Aikace-aikace

Don mafi kyawun aiki, ana ba da shawarar tuka LED ɗin tare da tushen naɗi akai-akai maimakon ƙarfin lantarki akai-akai. Dole ne a saita naɗin bisa ga hasken da ake so yayin da yake kasancewa cikin cikakkun ma'auni. Yi la'akari da hanyar zafi a cikin ƙirar PCB; amfani da hanyoyin zafi a ƙarƙashin ɗigon zafi na LED (idan ya dace) zai iya taimakawa wajen kawar da zafi. Don aikace-aikacen da ke buƙatar takamaiman daidaiton launi, ƙayyade lambobin kwandon ƙarfin lantarki da fitila da ake buƙata yayin siye.

9. Kwatancen Fasaha

Idan aka kwatanta da tsofaffin marufan LED kamar nau'in 5mm ta hanyar rami, wannan LED ɗin PLCC-2 SMD yana ba da ƙaramin takalmin gaba, mafi kyawun dacewa da haɗawa ta atomatik, da mafi faɗin kallo. A cikin dangin PLCC-2, wannan takamaiman bambance-bambancen ya bambanta da kansa tare da babban fihirisar nuna launi (Ra>90) da samuwa a cikin yanayin zazzabi da yawa, masu matsi, yana sa ya dace da aikace-aikacen inda ingancin launi yake da mahimmanci.

10. Tambayoyin da ake yawan yi

Q: Shin zan iya tuka wannan LED ɗin a 30mA akai-akai?

A: Haka ne, 30mA shine matsakaicin ci gaba naɗi. Koyaya, don tsawaita rayuwa da kiyaye haske, yin aiki a ko ƙasa da na 20mA na yau da kullun yana da kyau, musamman a cikin yanayin yanayi mai zafi.



Q: Menene bambanci tsakanin kwandunan yanayin zazzabi daban-daban?

A: Kwandon yana wakiltar inuwa daban-daban na farin haske, daga dumi (rawaya) zuwa sanyi (shuɗi). Zaɓin ya dogara da ƙirar da ake so da aikace-aikace (misali, farar haske mai dumi don hasken daki, farar haske mai sanyi don hasken aiki).



Q: Ta yaya zan fassara lambobin kwandon don yin oda?

A: Cikakkiyar lambar ɓangaren ta haɗa da lambobi don ƙarfin lantarki na gaba (misali, G1) da fitilar haske (misali, WHB). Tuntubi teburan kwandon don zaɓar haɗin da ya dace da ƙirar da'irar da buƙatun haske.

11. Lamarin Amfani na Aiki

Nazarin Shari'a 1: Hasken Baya na Panel Ikon Kayan Aiki.Za a iya amfani da jerin waɗannan LED ɗin don hasken baya na maɓallai da nunawa akan kayan aikin dafa abinci. Faɗin kallo yana tabbatar da ganuwa daga kusurwoyi daban-daban, kuma babban CRI yana tabbatar da cewa an nuna alamun launi daidai. Marufin SMT yana ba da damar ƙira mai siriri.



Nazarin Shari'a 2: Tsiri na LED Kayan Kawa.An ɗora su akan PCB mai sassauƙa, waɗannan LED ɗin zasu iya ƙirƙirar layukan haske iri ɗaya, ci gaba don hasken ƙira na gine-gine. Samun sautunan farare daban-daban yana ba masu ƙira damar daidaita yanayin haske da jigon ƙirar ciki.

12. Gabatarwar Ka'ida

LED farar gaskiya yana aiki akan ka'idar electroluminescence a cikin kayan semiconductor. Lokacin da aka yi amfani da ƙarfin lantarki na gaba, electrons da ramuka suna sake haɗuwa a yanki mai aiki na guntuwar LED shuɗi, suna fitar da photons na hasken shuɗi. Sa'an nan waɗannan photons shuɗi suna buga wani yanki na shafi na phosphor akan guntu. Phosphor yana ɗaukar wani ɓangare na hasken shuɗi kuma ya sake fitar da shi azaman haske a kan mafi faɗin bakan (tsawon raƙuman rawaya da ja). Haɗuwar sauran hasken shuɗi da hasken da phosphor ya fitar yana haifar da fahimtar farin haske. Tabbatar da inuwa (yanayin zazzabi) an ƙaddara shi ta hanyar abun da ke ciki da kauri na shafin phosphor.

13. Trends na Ci Gaba

Babban abin da ke faruwa a fasahar LED yana zuwa ga ƙarin inganci (ƙarin lumen kowace watt), inganta nuna launi, da ƙananan farashi. Don nau'ikan marufi kamar PLCC-2, ci gaba ya haɗa da ingantattun kayan sarrafa zazzabi don ba da damar manyan naɗin tuki, mafi ingantattun dabarun ajiya na phosphor don matsawa ƙwanƙwasa launi, da kayan lulluɓe waɗanda ke ba da mafi kyawun juriya ga yanayin zafi mai yawa da m. Bugu da ƙari, tuƙi zuwa ƙananan ƙira yana ci gaba, yana tura har ma da ƙananan girman marufi tare da kiyaye ko ingantaccen aikin gani don na'urorin lantarki masu ƙarancin ƙira na gaba.