Bayanin Fasaha na SMD LED LTST-020KRKT - 2.0x1.25x1.1mm - 2.4V - 72mW - Jan AlInGaP - Takardar Fasaha ta Hausa

1. Bayanin Samfur

Wannan takarda tana ba da cikakkun bayanai na fasaha na ƙaramin na'urar haske (LED) da ake hawa a saman allon lantarki (SMD). An ƙera wannan ɓangaren don sarrafa allon lantarki (PCB) ta atomatik, wanda ya sa ya dace da masana'antu masu yawan samarwa. Ƙananan girmansa yana magance buƙatun aikace-aikacen da ke da ƙarancin sarari a cikin kewayon na'urorin lantarki na zamani.

1.1 Fa'idodi na Asali

LED yana ba da fa'idodi masu mahimmanci ga injiniyoyin ƙira da masu kera kayan. Ya bi ka'idojin RoHS (Ƙuntata Abubuwa Masu Haɗari), yana tabbatar da amincin muhalli. Ana ba da ɓangaren a cikin kaset ɗin masana'antu mai girman 12mm akan reels 7-inch, wanda ya dace da na'urorin haɗawa da sanya atomatik, yana sauƙaƙe layin haɗawa. Bugu da ƙari, an ƙera shi don jure tsarin gudanar da gishiri na infrared (IR), wanda ya zama ma'auni don haɗin PCB mara gubar (Pb-free). Halayensa na lantarki sun dace da matakan dabaru na haɗaɗɗen kewayon (IC), yana sauƙaƙe ƙirar kewayon tuƙi.

1.2 Kasuwa da Aikace-aikace

Yawan amfani da wannan SMD LED ya sa ya dace da kewayon kayan lantarki. Manyan wuraren aikace-aikace sun haɗa da na'urorin sadarwa kamar wayoyin mara igiya da wayoyin hannu, kwamfutocin hannu kamar kwamfutocin hannu da kwamfutocin hannu, da tsarin sadarwa. Hakanan ana amfani da shi a cikin kayan masarufi don nuna matsayi da kuma a cikin kayan aikin masana'antu daban-daban. Ayyuka na musamman a cikin waɗannan na'urori sun haɗa da alamomin matsayi, hasken baya don allon gaba da maɓallan maɓalli, da ƙaramin haske don alamomi da sigina.

2. Bincike Mai Zurfi na Ma'auni na Fasaha

Fahimtar cikakken ma'auni na lantarki da na gani yana da mahimmanci don ƙirar kewayon da ya dogara da kuma cimma aiki mai daidaito.

2.1 Matsakaicin Matsakaicin Matsakaici

Waɗannan ma'auni suna bayyana iyakokin damuwa waɗanda za su iya haifar da lalacewa na dindindin ga na'urar. An ƙayyade su a yanayin zafin muhalli (Ta) na 25°C. Matsakaicin ci gaba na DC na gaba (IF) shine 30 mA. A ƙarƙashin yanayin bugun jini tare da aikin 1/10 da faɗin bugun 0.1ms, ana iya yarda da matsakaicin ƙarfin gaba na 80 mA. Ba za a wuce matsakaicin ɓarnawar wutar lantarki (Pd) na 72 mW ba. An ƙididdige na'urar don aiki a cikin kewayon zafin jiki daga -40°C zuwa +85°C kuma ana iya adana ta a cikin muhalli daga -40°C zuwa +100°C.

2.2 Halayen Lantarki da Gani

Ana auna waɗannan halaye a ƙarƙashin daidaitattun yanayin gwaji (Ta=25°C, IF=20mA) kuma suna bayyana aikin yau da kullun. Ƙarfin haske (Iv) yana da ƙima ta yau da kullun a cikin ƙayyadaddun iyaka, tare da ƙayyadaddun ƙananan ƙima da matsakaicin ƙima da aka bayyana a cikin sashin rarrabawa. Kusurwar kallo (2θ1/2), inda ƙarfin ya rabi ƙimar kan-axis, shine digiri 110, yana ba da tsarin haske mai faɗi. Hasken da aka fitar yana cikin bakan jan haske, tare da tsayin tsayin fitarwa (λp) na 639 nm da tsayin tsayin (λd) na 631 nm. Faɗin bakan (Δλ) yana kusan 20 nm. Ƙarfin lantarki na gaba (VF) yawanci yana auna volts 2.0, tare da matsakaicin volts 2.4 a 20mA. Ƙarfin lantarki na baya (IR) yana iyakance ga matsakaicin 10 μA a ƙarfin lantarki na baya (VR) na 5V; lura cewa ba a ƙera na'urar don aiki a ƙarƙashin ƙarancin lantarki ba.

3. Bayanin Tsarin Rarrabawa

Don tabbatar da daidaito a cikin samarwa mai yawa, ana rarraba LED zuwa rukunin aiki. Wannan yana ba masu ƙira damar zaɓar ɓangarorin da suka dace da takamaiman ƙananan ka'idojin aiki don aikace-aikacensu.

3.1 Rarrabawar Ƙarfin Hasken

An rarraba ƙarfin haske zuwa rukunoni daban-daban, kowanne an bayyana shi da lamba (R1, R2, S1, S2) da ƙananan/matsakaicin iyakar ƙarfin da aka auna a millicandelas (mcd) a 20mA. Misali, rukunin R1 ya ƙunshi ƙarfin daga 112 zuwa 140 mcd, yayin da rukunin S2 ya ƙunshi 220 zuwa 280 mcd. Ana amfani da jurewar +/-11% a cikin kowane rukunin. Wannan tsarin yana ba da damar sayan LED tare da tabbataccen matakan haske mafi ƙanƙanta.

4. Bincike na Lankwasa Aiki

Bayanan hoto yana ba da zurfin fahimtar halayen na'urar a ƙarƙashin yanayi daban-daban, wanda yake da mahimmanci don ƙira mai ƙarfi.

4.1 Ƙarfin Gaba vs. Ƙarfin Hasken

Dangantakar tsakanin ƙarfin gaba (IF) da ƙarfin haske (Iv) gabaɗaya layi ne a cikin kewayon aiki. Ƙara ƙarfin yana ƙara fitar da haske, amma dole ne masu ƙira su tsaya a cikin iyakokin matsakaicin ƙarfin gaba da ɓarnawar wutar lantarki don tabbatar da tsawon rayuwa.

4.2 Ƙarfin Lantarki na Gaba vs. Ƙarfin Gaba

Wannan lankwasa tana nuna halayen IV na diode. Ƙarfin lantarki na gaba yana ƙaruwa da logarithmic tare da ƙarfin lantarki. Fahimtar wannan lankwasa yana da mahimmanci don ƙirar resistor mai iyakance ƙarfin lantarki a jere tare da LED don saita wurin aiki da ake so da kuma rama bambance-bambancen ƙarfin wutar lantarki.

4.3 Dogaro da Zazzabi

Aikin LED yana da hankali ga zafin jiki. Yawanci, ƙarfin lantarki na gaba (VF) yana raguwa kaɗan tare da ƙaruwar zafin jiki na haɗin gwiwa, yayin da ƙarfin haske (Iv) shima yana raguwa. Dole ne ƙira don yanayin zafin muhalli mai girma ko aiki mai ƙarfi ya yi la'akari da wannan raguwa.

5. Bayanin Injiniya da Kunshin

5.1 Girman Kunshin

Na'urar ta yi daidai da ƙirar kunshin SMD na masana'antu. Manyan girma sun haɗa da tsawon jiki na 2.0 mm, faɗin 1.25 mm, da tsayin 1.1 mm. Duk jurewar girma yawanci ±0.1 mm sai dai idan an bayyana akasin haka. Ya kamata a duba cikakkun zane-zanen injiniya don ƙirar ƙirar ƙasa daidai.

5.2 Gano Polarity da Ƙirar Pad

Yawanci ana yiwa cathode alama akan na'urar, sau da yawa ta hanyar tsaga, kore dot, ko tsayin jagora daban. An ba da shawarar ƙirar ƙasa ta PCB (sawun ƙafa) don tabbatar da samuwar haɗin gishiri daidai yayin sake kwarara. Wannan tsari yana da mahimmanci don cimma haɗin injiniya da lantarki mai dogaro yayin hana gadojin gishiri ko kabari.

6. Jagororin Gishiri da Haɗawa

Sarrafa da haɗawa daidai yana da mahimmanci don kiyaye amincin na'urar da aiki.

6.1 Shawarar Profile na IR Reflow

Don hanyoyin gishiri mara gubar (Pb-free), ana ba da shawarar takamaiman bayanin martabar zafin jiki na sake kwarara, wanda ya dace da ma'auni kamar J-STD-020. Wannan bayanin martaba ya haɗa da matakin preheat, hawan zafin jiki, lokacin da ya wuce ruwa (TAL), matsakaicin zafin jiki bai wuce 260°C ba, da ƙayyadaddun ƙimar sanyaya. Bin wannan bayanin martaba yana hana girgizar zafi da lalata kunshin LED.

6.2 Yanayin Ajiya

SMD LED na'urori ne masu hankali ga danshi (MSD). Lokacin da aka adana su a cikin jakar su ta asali mai kulle da danshi tare da bushewa, ya kamata a kiyaye su a ≤30°C da ≤70% danshi na dangi (RH) kuma a yi amfani da su cikin shekara guda. Da zarar an buɗe jakar, \"rayuwar bene\" ta fara. Ya kamata a adana ɓangarorin a ≤30°C da ≤60% RH kuma ana ba da shawarar a sarrafa su (sake gishiri) cikin sa'o'i 168 (7 kwanaki). Idan an fallasa su na tsawon lokaci, ana buƙatar tsarin gasa (misali, 60°C na awanni 48) don cire danshin da aka sha da hana \"popcorning\" yayin sake kwarara.

6.3 Tsaftacewa

Idan ana buƙatar tsaftacewa bayan gishiri, kawai ya kamata a yi amfani da takamaiman kaushi. Nitsar LED a cikin barasa na ethyl ko isopropyl a zafin daki na ƙasa da minti ɗaya yana da kyau. Tsattsauran ko sinadarai da ba a bayyana ba na iya lalata ruwan tabarau na epoxy ko kayan kunshin.

7. Kunshin da Sarrafawa

Ana ba da ɓangarorin akan kaset ɗin mai ɗaukar kaya tare da murfin kariya, wanda aka nannade akan reels mai diamita 7-inch (178 mm). Matsakaicin adadin reel shine 4000 guda a kowane reel. Kunshin ya bi ƙa'idodin ANSI/EIA-481. Ya kamata a kiyaye matakan kariya na ESD (zubar da wutar lantarki) yayin sarrafawa.

8. Bayanin Aikace-aikace da Abubuwan Ƙira

8.1 Ƙirar Kewayon Tuƙi

LED na'urori ne masu tuƙi na ƙarfin lantarki. Don tabbatar da haske mai daidaito da hana ƙwace ƙarfin lantarki, kowane LED a cikin tsarin layi daya dole ne ya sami nasa resistor mai iyakance ƙarfin lantarki. Ana ƙididdige ƙimar resistor ta amfani da Dokar Ohm: R = (Vcc - VF) / IF, inda Vcc shine ƙarfin wutar lantarki, VF shine ƙarfin lantarki na gaba na LED, kuma IF shine ƙarfin gaba da ake so. Tuƙi LED tare da tushen ƙarfin lantarki na yau da kullun shine hanya mafi kwanciyar hankali.

8.2 Gudanar da Zazzabi

Ko da yake ɓarnawar wutar lantarki ƙanƙanta ce, ingantaccen sarrafa zafi akan PCB na iya haɓaka tsawon rayuwa da kuma kiyaye fitar da haske mai kwanciyar hankali. Tabbatar da isasshen yanki na tagulla a kusa da pad ɗin LED yana taimakawa wajen ɓarnawar zafi. Don aikace-aikacen da suka haɗa da yanayin zafi mai girma ko manyan ƙarfin tuƙi, la'akarin zafin jiki ya zama mafi mahimmanci.

8.3 Ƙirar Gani

Kusurwar kallo na digiri 110 tana ba da tsarin fitarwa mai faɗi wanda ya dace da alamomin matsayi. Don aikace-aikacen da ke buƙatar ƙarin mayar da hankali, ana iya amfani da na'urorin gani na biyu kamar ruwan tabarau ko bututun haske. Zaɓin launin ruwan tabarau (ruwa mai tsabta a wannan yanayin) yana shafar launin da ake gani da kuma yaduwar hasken da aka fitar.

9. Dogaro da Gargaɗi

An ƙera wannan samfur don amfani a cikin daidaitattun kayan lantarki na kasuwanci da masana'antu. Don aikace-aikacen da ke buƙatar dogaro na musamman inda gazawar zai iya haifar da haɗari ga aminci (misali, jirgin sama, tallafin rayuwa na likita), ƙarin cancanta da tuntuɓar mai kera ɓangaren ya zama dole. Koyaushe a yi amfani da na'urar a cikin Matsakaicin Matsakaicin Matsakaici da aka buga da kuma yanayin aiki da aka ba da shawarar.

10. Kwatancen Fasaha da Trends

Wannan LED jan AlInGaP yana ba da fa'idodi a cikin inganci da kwanciyar hankali na launi idan aka kwatanta da tsofaffin fasahohi kamar GaAsP. Trends a cikin SMD LED yana ci gaba zuwa mafi girman ingancin haske (ƙarin fitar da haske a kowace watt), ƙananan girman kunshin, da ingantaccen dogaro a ƙarƙashin yanayi mai tsauri. Karɓar kayan aiki marasa gubar da masu bin ka'idojin RoHS da hanyoyin aiki yanzu ya zama ma'auni a duk masana'antar.