Teburin Abubuwan Ciki
- 1. Bayanin Samfura
- 1.1 Matsayin Samfura da Bayanin Gabaɗaya
- 1.2 Fa'idodi da Siffofi na Asali
- Wannan LED ana yi masa niyya zuwa faɗin kasuwanni a cikin na'urorin lantarki na masu amfani, sarrafa masana'antu, da sassan kayan aiki. Aikace-aikacensa na farko sun haɗa da:
- Wannan sashe yana ba da cikakken bayani, fassarar abin da ake nufi da sigogi na lantarki, na gani, da na zafi da aka ƙayyade don LED, wanda ke da mahimmanci don ƙirar da'ira daidai da hasashen aiki.
- An ayyana aikin photoelectric a daidaitan gwajin gwaji (I
- Ƙarfin Gaba (V
- Sarrafa thermal yana da mahimmanci don LED tsawon rayuwa da kwanciyar hankali na aiki.
- An siffanta LED kuma an jera shi (binning) bisa mahimman sigogi don tabbatar da daidaito a cikin batutuwan samarwa, wanda ke da mahimmanci don aikace-aikacen da ke buƙatar daidaitaccen aiki na gani ko na lantarki.
- An jera ƙarfin gaba zuwa bin daban-daban goma (G1, G2, H1, H2, I1, I2, J1, J2, K1). Kowane bin ya ƙunshi kewayon 0.1V daga 2.8V zuwa 3.7V. Masu ƙira na iya ƙayyade bin na ƙarfin lantarki don dacewa da halayen fitarwa na da'irar su, haɓaka inganci da daidaiton haske a cikin LED da yawa a cikin jeri.
- An bin ƙarfin haske zuwa codes biyar (J20, K10, K20, L10, L20), tare da kowane wakiltar takamaiman kewayon fitarwa na millicandela. Wannan yana ba da damar zaɓi bisa buƙatun haske, yana ba da damar hasashen matakan fitar da haske a cikin aikace-aikacen ƙarshe.
- An ayyana ma'anar fari akan zane na chromaticity na CIE ta amfani da bin codes shida (K11, K21, K12, K22, K51, K61). Kowane bin shine quadrilateral da aka ayyana ta hanyar saiti huɗu na coordinates (x, y). Wannan daidaitaccen binning yana tabbatar da ƙaramin bambancin launi da ake iya gani tsakanin LED daga bin ɗaya, wanda ke da mahimmanci musamman don aikace-aikacen da ke amfani da LED da yawa tare.
- Yayin da PDF ke nuni da lanƙwasa na halayen gani na al'ada, bayanan da aka bayar suna ba da damar bincike na mahimman alaƙa.
- Bin na ƙarfin gaba da ƙimar halin yanzu suna nuna da'irar diode IV na al'ada. Ƙarfin lantarki yana ƙaruwa tare da halin yanzu a cikin logarithm. Yin aiki sama da shawarar 20mA zai haifar da mafi girma V
- An ƙayyade sigogi a 25°C. A aikace, aikin LED yana canzawa tare da zafin jiki. Yawanci, ƙarfin gaba yana raguwa ɗan kaɗan tare da ƙara yawan zafin jiki (coefficient mara kyau na zafin jiki), yayin da fitar da haske kuma yana raguwa. Matsakaicin yanayin junction na 95°C shine iyaka mai mahimmanci na ƙira. Thermal resistance na 450°C/W yana nufin shimfidar PCB da yankin jan ƙarfe suna da mahimmanci don kawar da zafi. Don ingantaccen aiki na dogon lokaci, yanayin junction ya kamata a kiyaye shi ƙasa ƙasa, ƙasa ƙasa da mafi girman iyaka.
- A matsayin LED fari mai canza phosphor, spectrum ɗinsa ya ƙunshi kololuwa daga guntu shuɗi (yawanci kusa da 450-460nm) da babban band na fitarwa daga phosphor rawaya. Haɗe-haɗen spectrum yana ayyana Correlated Color Temperature (CCT) da kaddarorin launi, waɗanda aka haɗa su a cikin bin chromaticity da aka ƙayyade akan zane na CIE.
- 5.1 Zane-zane da Tolerances na Girma
- Marufi na'urar haɗawa da ƙasa ce mai rectangular. Mahimman girma sun haɗa da girman jiki na 1.60mm x 0.80mm da tsayin 0.98mm. Girman tasha (pad) da tazara an ayyana su a fili a cikin tsarin gudanar da shawarar. Duk tolerances na girma su ne ±0.2mm sai dai idan an ƙayyade su, wanda shine ma'auni don wannan rukunin kayan aiki.
- Datasheet yana ba da shawarar tsarin ƙasa (tsarin gudanar) don ƙirar PCB. Wannan tsari yana da mahimmanci don samun haɗin gudanar mai dogaro, daidaitaccen daidaitawa, da ingantaccen canja wurin zafi daga LED zuwa PCB. Bin wannan shawarar yana taimakawa hana tombstoning kuma yana tabbatar da kwanciyar hankali na injiniya.
- LED yana da polarized. Ana yiwa alama cathode, sau da yawa ta alamar kore ko notch akan marufi. Daidaitaccen shugabanci yayin haɗawa yana da mahimmanci don na'urar yin aiki. Zane na datasheet yana nuna matsayin anode da cathode dangane da alamar marufi.
- 6.1 Sigogi na Reflow Soldering
- Wani sashe na musamman yana ba da umarnin reflow soldering na SMT. Yayin da cikakkun bayanai na bayanin yanayin zafi ba su cikin abin da aka fitar ba, jagororin gabaɗaya don kayan aiki masu rauni na Mataki 3 suna aiki. Waɗannan yawanci sun haɗa da:
- Mahimman matakan kariya sun haɗa da:
- Ya kamata a adana kayan aiki a cikin ainihin marufinsu a cikin yanayi mai zafin jiki tsakanin -40°C da +85°C da ƙananan danshi, kamar yadda ƙimar yanayin ajiyar take.
- 7.1 Ƙayyadaddun Marufi
- Ana ba da LED a cikin marufi na masana'antu na al'ada don haɗawa mai sarrafa kansa:
- Marufi ya haɗa da alamun da ke ɗauke da bayanan samfura, lambobin lot, da alamun matakin hankali na danshi (MSL 3). Ana tattara kayan aiki a cikin jakar shinge na danshi tare da desiccant don kiyaye ƙayyadaddun matakin danshi yayin ajiya da jigilar kaya, wanda ke da mahimmanci don sassan MSL 3.
- Lambar model na asali shine RF-WUD191DS-DD. Lokacin yin oda, dole ne a ƙayyade takamaiman bin codes don ƙarfin gaba (misali, G1, H2) da ƙarfin haske (misali, L10, K20) don samun halayen lantarki da na gani da ake so. Ana iya zaɓar bin codes na chromaticity.
- 8.1 Yanayin Aikace-aikace na Al'ada
- Bayan amfani da aka jera (masu nuna alama, hasken baya na maɓalli), wannan LED ya dace don:
- Iyaka Halin yanzu:
- Idan aka kwatanta da LED na gabaɗaya marasa binning ko manyan LED na marufi, wannan na'urar tana ba da bambance-bambance masu mahimmanci:
- Q1: Shin zan iya tuƙi wannan LED kai tsaye daga wutar lantarki 5V ba tare da resistor ba?
- Yanayi: Ƙirar Panel na Nuna Alama da Yawa
- Samar da hasken fari a cikin wannan LED yana dogara ne akan ƙa'idar canjin phosphor. Asalinsa shine guntu semiconductor da aka yi da kayan kamar indium gallium nitride (InGaN) wanda ke fitar da hasken shuɗi lokacin da aka yi masa bias na gaba (electroluminescence). Wannan hasken shuɗi wani ɓangare yana ɗaukar shi ta hanyar Layer na phosphor mai fitar da rawaya (yawanci YAG:Ce) da aka ajiye akan guntu. Phosphor yana sake fitar da makamashin da aka ɗauka azaman babban bakan hasken rawaya. Haɗuwar sauran hasken shuɗi da ba a ɗauke shi ba da kuma canjin hasken rawaya yana haifar da ganin hasken fari ta idon mutum. Daidai adadin shuɗi da rawaya suna ƙayyade Correlated Color Temperature (CCT), suna sanya ma'anar fari a cikin takamaiman yanki akan zane na chromaticity na CIE, kamar yadda bin codes suka ayyana.
- Ci gaban LED kamar wannan wani ɓangare ne na faɗaɗa trends a cikin optoelectronics:
- Kalmomin Ƙayyadaddun LED
- Aikin Hasken Wutar Lantarki
- Ma'auni na Lantarki
- Gudanar da Zafi & Amincewa
- Tufafi & Kayan Aiki
- Kula da Inganci & Rarraba
- Gwaji & Takaddun Shaida
1. Bayanin Samfura
Wannan takarda tana ba da cikakken bayanin fasaha na babban LED fari mai haske (LED) mai haɗawa da ƙasa. An ƙera na'urar don aikace-aikacen lantarki na zamani waɗanda ke buƙatar ingantaccen bayani, mai ƙarfi, da ƙananan hanyoyin haske.
1.1 Matsayin Samfura da Bayanin Gabaɗaya
LED shine tushen hasken fari da aka ƙera ta amfani da ƙwayar semiconductor shuɗi mai haɗawa da rufin phosphor don samun fitar da hasken fari mai faɗi. Matsayinsa na farko shine a matsayin abu mai ƙima, mai dogaro sosai don na'urorin lantarki masu yawa. Ƙananan girman marufi na tsawon 1.6mm, faɗin 0.8mm, da tsayin 0.98mm sun sa ya zama mai kyau don aikace-aikacen da ke da ƙaramin sarari. Ana rarraba samfurin a matsayin abu na samarwa masu yawa, yana nuna girmansa da dacewa don samarwa mai yawa.
1.2 Fa'idodi da Siffofi na Asali
LED yana ba da fa'idodi daban-daban waɗanda ke sa ya zama zaɓi na farko ga masu ƙira:
- Faɗin Kusurwar Kallo Sosai:Tare da kusurwar kallo ta al'ada (2θ½) na digiri 140, yana ba da haske mai daidaito da faɗi, yana kawar da wurare masu zafi kuma yana tabbatar da daidaitaccen ganuwa daga ra'ayoyi daban-daban.
- Daidaitawar SMT:Na'urar tana da cikakkiyar daidaitawa tare da duk matakan haɗawa da gudanar da SMT na al'ada (Surface Mount Technology), gami da gudanar da reflow, yana sauƙaƙe sarrafa PCB mai sarrafa kansa, mai sauri.
- Ƙimar Muhalli mai Ƙarfi:Yarda da Muhalli:
- Samfurin ya yi daidai da ƙa'idar Ƙuntata Abubuwa Masu Hadari (RoHS), yana tabbatar da cewa ya cika ma'aunin muhalli na duniya don kayan lantarki.1.3 Kasuwa da Aikace-aikace na Manufa
Wannan LED ana yi masa niyya zuwa faɗin kasuwanni a cikin na'urorin lantarki na masu amfani, sarrafa masana'antu, da sassan kayan aiki. Aikace-aikacensa na farko sun haɗa da:
Masu Nuna Alama na Gani:
- Yin aiki azaman fitilun yanayi, masu nuna wutar lantarki, da LED na sanarwa a cikin na'urori kamar na'urori, firinta, kayan aikin gida, da dashboard na motoci.Hasken Maɓalli da Alama:
- Hasken baya don maɓallai, maɓallai, da alamomin panel don haɓaka ganuwar mai amfani a cikin yanayi mara kyau.Hasken Baya na Nuni:
- Ana amfani dashi azaman hasken taimako don ƙananan nuni na LCD ko panel na bayanai.Hasken Gabaɗaya:
- Ya dace da kowane aikace-aikace da ke buƙatar ƙananan tushen hasken fari, ƙaramin wutar lantarki.2. Bincike Mai zurfi na Sigogi na Fasaha
Wannan sashe yana ba da cikakken bayani, fassarar abin da ake nufi da sigogi na lantarki, na gani, da na zafi da aka ƙayyade don LED, wanda ke da mahimmanci don ƙirar da'ira daidai da hasashen aiki.
2.1 Halayen Photoelectric
An ayyana aikin photoelectric a daidaitan gwajin gwaji (I
) na 20mA da yanayin yanayi (TF) na 25°C.sƘarfin Hasken (I
- ):VWannan sigogi yana auna hasken da aka gani na LED. An raba shi zuwa ƙwayoyin bin codes (J20, K10, K20, L10, L20), tare da ƙimomi masu iyaka daga mafi ƙanƙanta na millicandelas (mcd) 430 zuwa mafi girma na 1200 mcd. Bin L20 yana wakiltar matakin haske mafi girma. Tolerance na aunawa shine ±10%.Kusurwar Kallo (2θ½):
- Cikakken faɗin a rabin matsakaici (FWHM) kusurwa yawanci digiri 140 ne. Wannan faɗin kusurwa shine babban siffa, yana tabbatar da cewa hasken da aka fitar yana watsewa maimakon a mayar da hankali zuwa ƙaramin haske.Matsayin Launi:
- An ayyana ma'anar launin fari akan zane na chromaticity na CIE 1931. Bayanin ya haɗa da takamaiman bin codes (K11, K21, K12, K22, K51, K61) tare da iyakokin da aka ayyana (x, y), yana tabbatar da daidaiton launi a cikin batutuwan samarwa. Tolerance don aunawa na coordinate shine ±0.005.2.2 Sigogi na Lantarki
Ƙarfin Gaba (V
- ):FRagewar ƙarfin lantarki a kan LED lokacin da yake gudanar da 20mA. An rarraba shi da mahimmanci zuwa codes daga G1 (2.8V - 2.9V) zuwa K1 (3.6V - 3.7V). Wannan binning yana ba masu ƙira damar zaɓar LED tare da halayen ƙarfin lantarki masu daidaito, wanda ke da mahimmanci don ƙirar da'ira mai iyakancewar halin yanzu da tsare-tsaren wutar lantarki. Tolerance na aunawa shine ±0.1V.Halin yanzu na Baya (I
- ):RHalin yanzu na ɓarna lokacin da aka yi amfani da ƙarfin baya na 5V na 10ms. Mafi girman ƙimar da aka ƙayyade shine 10 μA, yana nuna ingantaccen haɗin kai da kariya daga ƙananan abubuwan da suka faru na ƙarfin baya.Matsakaicin Matsakaicin Ƙimar:
- Waɗannan su ne iyakokin matsin lamba waɗanda ba za a ƙetare su ba a kowane yanayi don hana lalacewa na dindindin.Matsakaicin Ci gaba na Halin yanzu na Gaba (I
- ): 30 mA.FMatsakaicin Halin yanzu na Ƙarfafawa (I
- ): 60 mA (a ƙarƙashin yanayi na faɗin bugun jini 0.1ms, aikin 1/10).FPMatsakaicin Ragewar Wutar Lantarki (P
- ): 111 mW. Wucewa wannan na iya haifar da zafi mai yawa da raguwa cikin sauri.dKariya daga Zubar da Lantarki (ESD): 1000V (Model na Jikin Mutum), yana nuna matakin kariya na asali daga lantarki.
- 2.3 Halayen Thermal
Sarrafa thermal yana da mahimmanci don LED tsawon rayuwa da kwanciyar hankali na aiki.
Thermal Resistance (R
- THJ-S):An ƙayyade thermal resistance na junction-to-solder point a matsayin 450 °C/W. Wannan ƙimar tana ƙididdige yadda zafi ke canzawa daga haɗin semiconductor zuwa pad PCB. Ƙimar ƙasa tafi daidai. Tare da wannan Rth, ana iya ƙididdige haɓakar yanayin zafi (ΔT) a matsayin Pj* RdTHJ-S. Misali, a matsakaicin wutar lantarki na 111mW, haɓakar zafin zai kasance kusan 50°C sama da zafin pad.Iyakar Zafin Jiki:
- Matsakaicin Yanayin Junction (T
- ): 95 °C. Dole ne a rage ainihin halin yanzu na aiki bisa ga ikon PCB na kawar da zafi don kiyaye Tjƙasa da wannan iyaka.jKewayon Yanayin Aiki (T
- opr): -40 °C zuwa +85 °C.Kewayon Yanayin Ajiya (T
- stg): -40 °C zuwa +85 °C.3. Bayanin Tsarin Binning
An siffanta LED kuma an jera shi (binning) bisa mahimman sigogi don tabbatar da daidaito a cikin batutuwan samarwa, wanda ke da mahimmanci don aikace-aikacen da ke buƙatar daidaitaccen aiki na gani ko na lantarki.
3.1 Binning na Ƙarfin Gaba
An jera ƙarfin gaba zuwa bin daban-daban goma (G1, G2, H1, H2, I1, I2, J1, J2, K1). Kowane bin ya ƙunshi kewayon 0.1V daga 2.8V zuwa 3.7V. Masu ƙira na iya ƙayyade bin na ƙarfin lantarki don dacewa da halayen fitarwa na da'irar su, haɓaka inganci da daidaiton haske a cikin LED da yawa a cikin jeri.
3.2 Binning na Flux/Ƙarfin Hasken
An bin ƙarfin haske zuwa codes biyar (J20, K10, K20, L10, L20), tare da kowane wakiltar takamaiman kewayon fitarwa na millicandela. Wannan yana ba da damar zaɓi bisa buƙatun haske, yana ba da damar hasashen matakan fitar da haske a cikin aikace-aikacen ƙarshe.
3.3 Chromaticity (Launi) Binning
An ayyana ma'anar fari akan zane na chromaticity na CIE ta amfani da bin codes shida (K11, K21, K12, K22, K51, K61). Kowane bin shine quadrilateral da aka ayyana ta hanyar saiti huɗu na coordinates (x, y). Wannan daidaitaccen binning yana tabbatar da ƙaramin bambancin launi da ake iya gani tsakanin LED daga bin ɗaya, wanda ke da mahimmanci musamman don aikace-aikacen da ke amfani da LED da yawa tare.
4. Bincike na Lanƙwasa Aiki
Yayin da PDF ke nuni da lanƙwasa na halayen gani na al'ada, bayanan da aka bayar suna ba da damar bincike na mahimman alaƙa.
4.1 Alamar IV Relationship
Bin na ƙarfin gaba da ƙimar halin yanzu suna nuna da'irar diode IV na al'ada. Ƙarfin lantarki yana ƙaruwa tare da halin yanzu a cikin logarithm. Yin aiki sama da shawarar 20mA zai haifar da mafi girma V
da ƙara yawan ragewar wutar lantarki da yanayin junction, wanda dole ne a sarrafa shi ta hanyar zafi ko raguwar halin yanzu.F4.2 Halayen Yanayin Zafi
An ƙayyade sigogi a 25°C. A aikace, aikin LED yana canzawa tare da zafin jiki. Yawanci, ƙarfin gaba yana raguwa ɗan kaɗan tare da ƙara yawan zafin jiki (coefficient mara kyau na zafin jiki), yayin da fitar da haske kuma yana raguwa. Matsakaicin yanayin junction na 95°C shine iyaka mai mahimmanci na ƙira. Thermal resistance na 450°C/W yana nufin shimfidar PCB da yankin jan ƙarfe suna da mahimmanci don kawar da zafi. Don ingantaccen aiki na dogon lokaci, yanayin junction ya kamata a kiyaye shi ƙasa ƙasa, ƙasa ƙasa da mafi girman iyaka.
4.3 Rarraba Spectral
A matsayin LED fari mai canza phosphor, spectrum ɗinsa ya ƙunshi kololuwa daga guntu shuɗi (yawanci kusa da 450-460nm) da babban band na fitarwa daga phosphor rawaya. Haɗe-haɗen spectrum yana ayyana Correlated Color Temperature (CCT) da kaddarorin launi, waɗanda aka haɗa su a cikin bin chromaticity da aka ƙayyade akan zane na CIE.
5. Bayanin Injiniya da Marufi
5.1 Zane-zane da Tolerances na Girma
Marufi na'urar haɗawa da ƙasa ce mai rectangular. Mahimman girma sun haɗa da girman jiki na 1.60mm x 0.80mm da tsayin 0.98mm. Girman tasha (pad) da tazara an ayyana su a fili a cikin tsarin gudanar da shawarar. Duk tolerances na girma su ne ±0.2mm sai dai idan an ƙayyade su, wanda shine ma'auni don wannan rukunin kayan aiki.
5.2 Shawarar Ƙirar Pad
Datasheet yana ba da shawarar tsarin ƙasa (tsarin gudanar) don ƙirar PCB. Wannan tsari yana da mahimmanci don samun haɗin gudanar mai dogaro, daidaitaccen daidaitawa, da ingantaccen canja wurin zafi daga LED zuwa PCB. Bin wannan shawarar yana taimakawa hana tombstoning kuma yana tabbatar da kwanciyar hankali na injiniya.
5.3 Gano Polarity
LED yana da polarized. Ana yiwa alama cathode, sau da yawa ta alamar kore ko notch akan marufi. Daidaitaccen shugabanci yayin haɗawa yana da mahimmanci don na'urar yin aiki. Zane na datasheet yana nuna matsayin anode da cathode dangane da alamar marufi.
6. Jagororin Gudanarwa da Haɗawa
6.1 Sigogi na Reflow Soldering
Wani sashe na musamman yana ba da umarnin reflow soldering na SMT. Yayin da cikakkun bayanai na bayanin yanayin zafi ba su cikin abin da aka fitar ba, jagororin gabaɗaya don kayan aiki masu rauni na Mataki 3 suna aiki. Waɗannan yawanci sun haɗa da:
Pre-baking kayan aiki idan an buɗe jakar shinge na danshi fiye da ƙayyadaddun rayuwar bene (yawanci sa'o'i 168 don MSL 3) don cire danshin da aka ɗauka.
- Yin amfani da bayanin reflow mara gubar (ko mai gubar) tare da matsakaicin zafin jiki bai wuce matsakaicin ƙimar kayan aiki ba (mai haɗe da T
- da amincin marufi).jSarrafa haɓakar haɓakawa da ƙimar sanyaya don rage girgizar zafi.
- 6.2 Kula da Ajiya da Kula
Mahimman matakan kariya sun haɗa da:
Kariya daga ESD:
- Yi amfani da ayyukan ESD-safe na al'ada (wrist straps, conductive mats) kamar yadda ƙimar ESD ta kasance 1000V HBM.Hankali na Danshi:
- Bi ka'idojin MSL Level 3. Ajiye a cikin ainihin jakunkuna na shinge na danshi da ba a buɗe ba tare da desiccant. Da zarar an buɗe, yi amfani da shi cikin ƙayyadaddun lokaci ko sake gasa kafin gudanarwa.Matsi na Injiniya:
- Kauce wa amfani da ƙarfi kai tsaye ga ruwan tabarau na LED ko jiki yayin handling ko sanyawa.Tsabtacewa:
- Idan ana buƙatar tsabtacewa bayan gudanarwa, yi amfani da solvents masu dacewa waɗanda ba sa lalata ruwan tabarau na epoxy.6.3 Yanayin Ajiya
Ya kamata a adana kayan aiki a cikin ainihin marufinsu a cikin yanayi mai zafin jiki tsakanin -40°C da +85°C da ƙananan danshi, kamar yadda ƙimar yanayin ajiyar take.
7. Bayanin Marufi da Oda
7.1 Ƙayyadaddun Marufi
Ana ba da LED a cikin marufi na masana'antu na al'ada don haɗawa mai sarrafa kansa:
Kaset ɗin Carrier:
- An saka kayan aiki a cikin kaset ɗin carrier da aka zana tare da takamaiman girman aljihu don riƙe jiki na 1.6x0.8mm cikin aminci.Reel:
- Ana jujjuya tef ɗin akan reel. An ƙayyade daidaitattun girman reel (misali, inci 7 ko inci 13) don dacewa da injinan zaɓe da sanyawa na SMT.Akwatin Kati:
- Ana tattara reels a cikin akwatunan kati don jigilar kaya da ajiya, suna ba da kariya ta jiki.7.2 Ƙayyadaddun Alama da Shinge na Danshi
Marufi ya haɗa da alamun da ke ɗauke da bayanan samfura, lambobin lot, da alamun matakin hankali na danshi (MSL 3). Ana tattara kayan aiki a cikin jakar shinge na danshi tare da desiccant don kiyaye ƙayyadaddun matakin danshi yayin ajiya da jigilar kaya, wanda ke da mahimmanci don sassan MSL 3.
7.3 Lambar Model da Zaɓin Bin
Lambar model na asali shine RF-WUD191DS-DD. Lokacin yin oda, dole ne a ƙayyade takamaiman bin codes don ƙarfin gaba (misali, G1, H2) da ƙarfin haske (misali, L10, K20) don samun halayen lantarki da na gani da ake so. Ana iya zaɓar bin codes na chromaticity.
8. Shawarwari na Aikace-aikace
8.1 Yanayin Aikace-aikace na Al'ada
Bayan amfani da aka jera (masu nuna alama, hasken baya na maɓalli), wannan LED ya dace don:
Kayan Lantarki na Masu Amfani:
- LED na yanayi akan na'urorin gida masu wayo, na sawa, da na USB peripherals.Cikin Motoci:
- Ƙaramin haske don sarrafawa da nuni (dangane da ƙarin cancantar mota).HMIs na Masana'antu:
- Masu nuna alama na panel akan injina da kayan aikin gwaji inda dogaro ke da mahimmanci.Na'urorin Likita:
- Fitilun nuna alama marasa mahimmanci akan kayan aikin hannu.8.2 Mahimman Abubuwan Ƙira
Iyaka Halin yanzu:
- Koyaushe yi amfani da resistor mai iyakancewar halin yanzu ko direba mai ci gaba. Ya kamata a ƙididdige ƙimar bisa ƙarfin wutar lantarki da bin ƙarfin gaba na LED don tabbatar da cewa halin yanzu bai wuce matsakaicin ƙimar ci gaba (30mA) ba.Sarrafa Thermal:
- Sakamakon thermal resistance na 450°C/W, ƙirar PCB tana da mahimmanci. Yi amfani da isasshen yanki na jan ƙarfe (pads na zafi) da aka haɗa zuwa tashoshin LED don yin aiki azaman sink zafi. Don jeri ko aikace-aikacen yanayin zafi mai girma, yi cikakken bincike na thermal don tabbatar da T95°C.j <Ƙirar Gani:
- Kusurwar kallo na digiri 140 ta kasance ta watsewa. Don aikace-aikacen da ke buƙatar ƙarin haske da aka jagoranta, ruwan tabarau na waje ko jagororin haske na iya zama dole.Daidaiton Bin:
- Don aikace-aikacen LED da yawa, ƙayyade matsakaicin bin don ƙarfin lantarki da chromaticity don tabbatar da daidaiton haske da kamannin launi.9. Kwatancen Fasaha da Bambance-bambance
Idan aka kwatanta da LED na gabaɗaya marasa binning ko manyan LED na marufi, wannan na'urar tana ba da bambance-bambance masu mahimmanci:
Fa'idar Girma:
- Marufi na 1608 (1.6x0.8mm) ya fi ƙanƙanta fiye da na kowa 3528 ko 5050 marufi, yana ba da damar ƙanƙanta.Daidaiton Aiki:
- Cikakken tsarin binning don V, ƙarfi, da launi yana ba da matakin hasashe da daidaito wanda abubuwan da ba a binning ko sako-sako da binning ba suke rasa, yana rage buƙatun gefen ƙira.FFitarwa mai Faɗi:
- Kusurwar kallo na digiri 140 ta fi faɗi fiye da yawancin LED na SMD masu fafatawa, waɗanda sau da yawa sukan kasance daga digiri 120 zuwa 130, suna ba da ƙarin daidaitaccen haske ba tare da na'urorin gani na biyu ba.Daidaituwar Ƙayyadaddun Bayanai:
- Yana ba da ma'auni mai kyau na haske (har zuwa 1200mcd), sarrafa wutar lantarki (111mW), da aikin thermal don rukunin girman sa.10. Tambayoyi da Yawan Tambaya (Dangane da Sigogi na Fasaha)
Q1: Shin zan iya tuƙi wannan LED kai tsaye daga wutar lantarki 5V ba tare da resistor ba?
A: A'a. Ba tare da resistor mai iyakancewar halin yanzu ba, LED zai jawo halin yanzu mai yawa, da sauri ya wuce matsakaicin ƙimar wutar lantarki da ƙimar halin yanzu, yana haifar da gazawa nan da nan ko cikin sauri saboda zafi mai yawa.
Q2: Menene tsawon rayuwar al'ada na wannan LED?
A: Tsawon rayuwar LED yawanci ana ayyana shi azaman inda fitar da haske ya ragu zuwa 70% na ƙimarsa na farko (L70). Kodayake ba a bayyana shi a fili a nan ba, tsawon rayuwa yana dogara sosai akan yanayin aiki, da farko yanayin junction. Yin aiki ƙasa ƙasa da matsakaicin T
na 95°C (misali, ƙasa da 70-80°C) zai tabbatar da dogon lokacin aiki, sau da yawa ya wuce sa'o'i 50,000.jQ3: Ta yaya zan zaɓi daidaitaccen ƙimar resistor mai iyakancewar halin yanzu?
A: Yi amfani da Dokar Ohm: R = (V
supply- V) / IF. Yi amfani da matsakaicin VFdaga zaɓaɓɓen bin ɗin ku don ƙira mai ra'ayin mazan jiya don tabbatar da cewa halin yanzu bai wuce manufar ku ba (misali, 20mA). Don wutar lantarki 5V da VFbin na 3.2V max: R = (5 - 3.2) / 0.02 = 90 ohms. resistor na al'ada na 91-ohm ko 100-ohm zai dace.FQ4: Me yasa Matakin Hankali na Danshi (MSL 3) yake da mahimmanci?
A> Lokacin da abubuwan da suka shafi danshi suka fuskanci manyan yanayin zafi na reflow soldering, danshin da aka kama zai iya ƙafewa cikin sauri, yana haifar da ɓarna na ciki ko "popcorning," wanda ke fashe marufi. MSL 3 yana nuna cewa bayan an buɗe jakar, dole ne a gudanar da kayan aikin cikin sa'o'i 168 (7 kwanaki) ko a gasa su don cire danshi.
11. Misalin Amfani na Aiki
Yanayi: Ƙirar Panel na Nuna Alama da Yawa
Mai ƙira yana ƙirƙira panel ɗin sarrafawa tare da fitilun LED fari goma. Daidaiton haske da launi yana da mahimmanci don ƙwarewar mai amfani.
Ai da aikacewa:
Zaɓin Bin:
- Ƙayyade bin ƙarfin haske ɗaya (misali, L10 don babban haske) da bin chromaticity ɗaya (misali, K21) don duk LED goma don tabbatar da daidaiton gani.Ƙirar Da'ira:
- Zaɓi bin ƙarfin gaba (misali, H1: 3.0-3.1V). Ƙirar da'irar direba tare da rassan resistor mai iyakancewar halin yanzu guda goma iri ɗaya, kowane an ƙididdige shi ta amfani da matsakaicin Vdaga bin H1 don tabbatar da daidaitaccen halin yanzu da haske a duk LED ko da tare da ƙananan VFShimfidar PCB:F variations.
- Ga kowane LED, ba da zube na jan ƙarfe a kusa da pads na gudanar a matsayin taimako na zafi. Tabbatar da cewa PCB yana da isassun yadudduka na jan ƙarfe gabaɗaya ko ramukan zafi don kawar da jimillar zafi daga duk LED goma.Haɗawa:
- Bi matakan handling na MSL 3. Yi amfani da bayanin reflow da aka ba da shawarar don tabbatar da haɗin gudanar mai dogaro ba tare da lalata kayan aiki ba.Wannan hanyar tana amfani da tsarin binning don samun sakamako na ƙwararru, mai daidaito.
Samar da hasken fari a cikin wannan LED yana dogara ne akan ƙa'idar canjin phosphor. Asalinsa shine guntu semiconductor da aka yi da kayan kamar indium gallium nitride (InGaN) wanda ke fitar da hasken shuɗi lokacin da aka yi masa bias na gaba (electroluminescence). Wannan hasken shuɗi wani ɓangare yana ɗaukar shi ta hanyar Layer na phosphor mai fitar da rawaya (yawanci YAG:Ce) da aka ajiye akan guntu. Phosphor yana sake fitar da makamashin da aka ɗauka azaman babban bakan hasken rawaya. Haɗuwar sauran hasken shuɗi da ba a ɗauke shi ba da kuma canjin hasken rawaya yana haifar da ganin hasken fari ta idon mutum. Daidai adadin shuɗi da rawaya suna ƙayyade Correlated Color Temperature (CCT), suna sanya ma'anar fari a cikin takamaiman yanki akan zane na chromaticity na CIE, kamar yadda bin codes suka ayyana.
13. Trends na Masana'antu da Mahallin
Ci gaban LED kamar wannan wani ɓangare ne na faɗaɗa trends a cikin optoelectronics:
Ƙanƙantawa:
- Ci gaba da tuƙi zuwa ƙananan girman marufi (misali, daga 3528 zuwa 2016 zuwa 1608) don ba da damar ƙananan samfurori na ƙarshe, masu ƙanƙanta.Ƙara Inganci:
- Ci gaba da haɓaka fasahar guntu da ingancin phosphor yana haifar da mafi girman ingancin haske (ƙarin fitar da haske kowace watt na shigar da lantarki), kodayake wannan takardar ta mayar da hankali kan ƙarfi a daidaitan halin yanzu.Ƙarfafa Daidaiton Launi:
- Matsakaicin binning da ingantattun hanyoyin samarwa suna tabbatar da mafi kyawun daidaiton launi, wanda ake ƙara buƙata a cikin haske na ƙwararru da aikace-aikacen nuni.Dogaro da Daidaitawa:
- An ƙera kayan aiki don cika ƙa'idodi na duniya masu tsauri don gudanar (IPC), hankali na danshi (JEDEC MSL), da yarda da muhalli (RoHS, REACH), kamar yadda aka nuna a cikin wannan datasheet.Wannan ɓangaren yana wakiltar mafita mai girma, mai siffa da kyau a cikin waɗannan buƙatun kasuwa masu canzawa, yana ba da ma'auni mai dogaro na girman, aiki, da farashi don samarwa mai yawa.
Kalmomin Ƙayyadaddun LED
Cikakken bayanin kalmomin fasaha na LED
Aikin Hasken Wutar Lantarki
| Kalma | Naúrar/Wakilci | Bayanin Sauri | Me yasa yake da muhimmanci |
|---|---|---|---|
| Ingancin Hasken Wuta | lm/W (lumen kowace watt) | Fitowar haske kowace watt na wutar lantarki, mafi girma yana nufin mafi ingancin kuzari. | Kai tsaye yana ƙayyade matakin ingancin kuzari da farashin wutar lantarki. |
| Gudun Hasken Wuta | lm (lumen) | Jimillar hasken da tushe ke fitarwa, ana kiransa "haske". | Yana ƙayyade ko hasken yana da haske sosai. |
| Kusurwar Dubawa | ° (digiri), misali 120° | Kusurwar da ƙarfin haske ya ragu zuwa rabi, yana ƙayyade faɗin haske. | Yana shafar kewar haskakawa da daidaito. |
| Zafin Launi (CCT) | K (Kelvin), misali 2700K/6500K | Zafi/sanyin haske, ƙananan ƙimomi rawaya/zafi, mafi girma fari/sanyi. | Yana ƙayyade yanayin haskakawa da yanayin da suka dace. |
| CI / Ra | Ba naúrar, 0–100 | Ikon ba da launukan abubuwa daidai, Ra≥80 yana da kyau. | Yana shafar sahihancin launi, ana amfani dashi a wurare masu buƙatu kamar shaguna, gidajen tarihi. |
| SDCM | Matakan ellipse MacAdam, misali "5-mataki" | Ma'aunin daidaiton launi, ƙananan matakai suna nufin mafi daidaiton launi. | Yana tabbatar da daidaiton launi a cikin rukunin LED iri ɗaya. |
| Matsakaicin Tsawon Raɗaɗin Hasken | nm (nanomita), misali 620nm (ja) | Tsawon raɗaɗin haske daidai da launin LED masu launi. | Yana ƙayyade launin ja, rawaya, kore LED masu launi ɗaya. |
| Rarraba Bakan Hasken | Layin tsawon raɗaɗi da ƙarfi | Yana nuna rarraba ƙarfi a cikin tsawon raɗaɗin haske. | Yana shafar ba da launi da ingancin launi. |
Ma'auni na Lantarki
| Kalma | Alamar | Bayanin Sauri | Abubuwan ƙira |
|---|---|---|---|
| Ƙarfin lantarki na gaba | Vf | Mafi ƙarancin ƙarfin lantarki don kunna LED, kamar "maƙallan farawa". | Ƙarfin lantarki na injin dole ya zama ≥Vf, ƙarfin lantarki yana ƙara don LED a jere. |
| Ƙarfin lantarki na gaba | If | Ƙimar ƙarfin lantarki don aikin LED na yau da kullun. | Yawanci tuƙi mai ƙarfi akai-akai, ƙarfin lantarki yana ƙayyade haske da tsawon rai. |
| Matsakaicin Ƙarfin lantarki na bugun jini | Ifp | Matsakaicin ƙarfin lantarki mai jurewa na ɗan lokaci, ana amfani dashi don duhu ko walƙiya. | Fadin bugun jini da sake zagayowar aiki dole ne a sarrafa su sosai don guje wa lalacewa. |
| Ƙarfin lantarki na baya | Vr | Matsakaicin ƙarfin lantarki na baya da LED zai iya jurewa, wanda ya wuce zai iya haifar da rushewa. | Dangane dole ne ya hana haɗin baya ko ƙarfin lantarki. |
| Juriya na zafi | Rth (°C/W) | Juriya ga canja wurin zafi daga guntu zuwa solder, ƙasa yana da kyau. | Babban juriya na zafi yana buƙatar zubar da zafi mai ƙarfi. |
| Rigakafin ESD | V (HBM), misali 1000V | Ikon jurewa zubar da wutar lantarki, mafi girma yana nufin ƙasa mai rauni. | Ana buƙatar matakan hana wutar lantarki a cikin samarwa, musamman ga LED masu hankali. |
Gudanar da Zafi & Amincewa
| Kalma | Ma'aunin maɓalli | Bayanin Sauri | Tasiri |
|---|---|---|---|
| Zazzabin Haɗin gwiwa | Tj (°C) | Ainihin yanayin aiki a cikin guntun LED. | Kowane raguwa 10°C na iya ninka tsawon rai; yayi yawa yana haifar da lalacewar haske, canjin launi. |
| Ragewar Lumen | L70 / L80 (sa'o'i) | Lokacin da haske ya ragu zuwa 70% ko 80% na farko. | Kai tsaye yana ayyana "tsawon sabis" na LED. |
| Kula da Lumen | % (misali 70%) | Kashi na hasken da aka riƙe bayan lokaci. | Yana nuna riƙon haske akan amfani na dogon lokaci. |
| Canjin Launi | Δu′v′ ko ellipse MacAdam | Matsakaicin canjin launi yayin amfani. | Yana shafar daidaiton launi a cikin yanayin haskakawa. |
| Tsufa na Zafi | Lalacewar kayan aiki | Lalacewa saboda yanayin zafi na dogon lokaci. | Zai iya haifar da raguwar haske, canjin launi, ko gazawar buɗe kewaye. |
Tufafi & Kayan Aiki
| Kalma | Nau'ikan gama gari | Bayanin Sauri | Siffofi & Aikace-aikace |
|---|---|---|---|
| Nau'in Kunshin | EMC, PPA, Yumbu | Kayan gida masu kare guntu, samar da hanyar sadarwa ta gani/zafi. | EMC: juriya mai kyau na zafi, farashi mai rahusa; Yumbu: mafi kyawun zubar da zafi, tsawon rai. |
| Tsarin Guntu | Gaba, Guntu Juyawa | Tsarin na'urorin lantarki na guntu. | Juyawar guntu: mafi kyawun zubar da zafi, inganci mafi girma, don ƙarfi mai ƙarfi. |
| Rufin Phosphor | YAG, Silicate, Nitride | Yana rufe guntu shuɗi, yana canza wasu zuwa rawaya/ja, yana haɗa su zuwa fari. | Phosphor daban-daban suna shafar inganci, CCT, da CRI. |
| Ruwan tabarau/Optics | Lefi, Microlens, TIR | Tsarin gani a saman yana sarrafa rarraba haske. | Yana ƙayyade kusurwar dubawa da layin rarraba haske. |
Kula da Inganci & Rarraba
| Kalma | Abun rarraba | Bayanin Sauri | Manufa |
|---|---|---|---|
| Kwalin Gudun Hasken | Lambar misali 2G, 2H | An tattara su ta hanyar haske, kowace ƙungiya tana da ƙananan/matsakaicin ƙimar lumen. | Yana tabbatar da daidaiton haske a cikin jeri ɗaya. |
| Kwalin Ƙarfin lantarki | Lambar misali 6W, 6X | An tattara su ta hanyar kewayon ƙarfin lantarki na gaba. | Yana sauƙaƙe daidaitawar tuƙi, yana inganta ingancin tsarin. |
| Kwalin Launi | Ellipse MacAdam 5-mataki | An tattara su ta hanyar daidaitattun launi, yana tabbatar da ƙuntataccen kewayon. | Yana ba da garantin daidaiton launi, yana guje wa launi mara daidaituwa a cikin kayan aikin. |
| Kwalin CCT | 2700K, 3000K da sauransu | An tattara su ta hanyar CCT, kowanne yana da madaidaicin kewayon daidaitawa. | Yana cika buƙatun CCT na yanayi daban-daban. |
Gwaji & Takaddun Shaida
| Kalma | Matsakaicin/Gwaji | Bayanin Sauri | Muhimmanci |
|---|---|---|---|
| LM-80 | Gwajin kula da lumen | Haskakawa na dogon lokaci a yanayin zafi akai-akai, yana rikodin lalacewar haske. | Ana amfani dashi don kimanta rayuwar LED (tare da TM-21). |
| TM-21 | Matsakaicin kimanta rayuwa | Yana kimanta rayuwa a ƙarƙashin yanayi na ainihi bisa bayanan LM-80. | Yana ba da hasashen kimiyya na rayuwa. |
| IESNA | Ƙungiyar Injiniyoyin Haskakawa | Yana rufe hanyoyin gwajin gani, lantarki, zafi. | Tushen gwaji da masana'antu suka amince. |
| RoHS / REACH | Tabbatarwar muhalli | Yana tabbatar da babu abubuwa masu cutarwa (darma, mercury). | Bukatar shiga kasuwa a duniya. |
| ENERGY STAR / DLC | Tabbatarwar ingancin kuzari | Tabbatarwar ingancin kuzari da aiki don samfuran haskakawa. | Ana amfani dashi a cikin sayayyan gwamnati, shirye-shiryen tallafi, yana haɓaka gasa. |