Bayanin Fasaha na LTE-S9511TS-R Mai Fitowa Haske na Infrared - Tsawon Zango 940nm - Kallon Kusa 18° - Ƙarfin Wutar Gaba 1.6V - Takardun Fasaha na Turanci

1. Bayanin Samfur

LTE-S9511TS-R wani na'ura ne mai fitar da hasken infrared wanda aka tsara don aikace-aikacen da ke buƙatar ingantattun hanyoyin hasken infrared. Yana amfani da fasahar Gallium Arsenide (GaAs) don fitar da haske a tsayin zango na 940nm, wanda ya fi dacewa don rage tsangwama na haske da ake iya gani. Na'urar tana da fakitin kallon gefe tare da ruwan tabarau mai tsafta, yana ba da kallon kusa na digiri 18. Wannan ya sa ya dace da aikace-aikacen da ake buƙatar siginar infrared da aka tsara. Samfurin ya bi ka'idojin RoHS da ma'auni na samfurin kore, an yi fakitin don tsarin haɗawa ta atomatik, kuma ya dace da gyarar infrared reflow.

1.1 Fasali na Asali da Kasuwar Manufa

Babban fasalin wannan mai fitar da infrared ya haɗa da ƙarfin haskensa mai ƙarfi, ƙaramin fakitin ma'aunin EIA, da dacewa don haɗa PCB ta atomatik. Babban fa'idodinsa shine tsayin zango na 940nm, wanda aka saba amfani da shi a cikin sarrafa nesa na kayan lantarki na mabukaci saboda ƙarancin gani da kyakkyawan amsawar photodetector na silicon, da tsarin kallonsa na gefe wanda ke ba da damar fitar da hasken infrared a kwance akan PCB. Kasuwowin manufa sune farkon kayan lantarki na mabukaci, sarrafa masana'antu, da tsarin tsaro. Babban aikace-aikace shine a matsayin mai fitar da infrared a cikin na'urorin sarrafa nesa da kuma a matsayin kayan aikin firikwensin da aka ɗora akan PCB a cikin tsarin ganowa da watsa bayanai daban-daban.

2. Bincike na Ma'auni na Fasaha

2.1 Matsakaicin Matsakaicin Ƙimar

Waɗannan ƙimar suna bayyana iyakokin da za su iya haifar da lalacewa na dindindin ga na'urar. Matsakaicin ɓarnawar wutar lantarki shine 140 mW a yanayin zafin jiki (TA) na 25°C. Zai iya ɗaukar matsakaicin gudun gaba na 1 Ampere a ƙarƙashin yanayin bugun jini (bugun jini 300 a kowace dakika, faɗin bugun jini 10μs), yayin da matsakaicin ci gaba na DC na gaba shine 70 mA. Na'urar na iya jure ƙarfin wutar lantarki har zuwa 5 Volts. Kewayon zafin aiki daga -40°C zuwa +85°C, kewayon zafin ajiya daga -55°C zuwa +100°C. Matsakaicin zafin gyarar infrared reflow shine 260°C na dakika 10.

2.2 Halayen Wutar Lantarki da Na'urar Gani

Waɗannan sune ma'auni na aiki da aka auna a TA=25°C. Ƙarfin haske (I_E) shine 24 mW/sr (na yau da kullun) a gudun gaba (I_F) na 20mA, tare da ƙimar gwaji na ±15%. Tsayin zango na fitarwa (λ_Peak) shine 940nm. Faɗin zango na haske (Δλ), wanda ke wakiltar yaduwar tsayin zango, shine 50nm. Ƙarfin wutar gaba (V_F) shine 1.3V na yau da kullun, tare da matsakaicin 1.6V a I_F=20mA. Gudun baya (I_R) shine matsakaicin 10 μA a ƙarfin wutar lantarki (V_R) na 5V. Kallon kusa (2θ_1/2), inda ƙarfin ya ragu zuwa rabin ƙimar sa akan axis, shine digiri 18.

3. Bincike na Lanƙwasa na Aiki

3. Bincike na Lanƙwasa na Aiki

4. Bayanin Injiniya da Fakitin

4.1 Zane da Girman Fakitin

Na'urar ta yi daidai da ma'aunin fakitin EIA. Zanen zane yana ba da mahimman girma don ƙirar sawun PCB da haɗin injiniya. Duk girma an ba da su a cikin milimita tare da ƙimar jurewa na gabaɗaya na ±0.15mm sai dai idan an faɗi akasin haka. An nuna alkiblar kallon gefe a sarari.

4.2 Tsarin Gindin Gyarawa

An ba da shawarar tsarin gindin gyarawa don tabbatar da ingantaccen haɗin gyarawa yayin reflow ko gyarar igiyar ruwa. Girman an inganta shi don fakitin kuma yana taimakawa hana kabari ko rashin laushi. An ba da shawarar kauri na stencil na ƙarfe na 0.12mm (5 mils) don aikace-aikacen man gyarawa.

4.3 Fakitin Tef da Reel

Ana samar da kayan aikin a cikin tef mai ɗaukar kaya na 8mm akan reels masu diamita 7-inch, waɗanda suka dace da ingantattun kayan aikin ɗauka da sanyawa ta atomatik. Kowace reel tana ƙunshe da guda 1500. Ƙayyadaddun fakitin, gami da girman aljihu, faɗin tef, da girman cibiyar reel, suna bin ka'idojin ANSI/EIA 481-1-A-1994. An rufe tef da tef mai rufewa don kare kayan aiki daga danshi da gurɓatawa.

5. Jagororin Haɗawa da Sarrafawa

5.1 Tsarin Gyarawa

Na'urar ta dace da hanyoyin gyarar infrared reflow, musamman don gami da gami da gubar (ba tare da gubar ba). An ba da cikakken shawarar bayanin reflow, yana mai da hankali kan matsakaicin zafin jiki wanda bai wuce 260°C ba na matsakaicin dakika 10. Bayanin ya haɗa da matakan pre-heat don rage girgizar zafi. Don gyarar hannu, an ba da shawarar zafin guga na gyarawa ƙasa da 300°C na matsakaicin dakika 3 kowace gubar. Jagororin sun jaddada cewa ya kamata a siffanta bayanin ƙarshe don takamaiman ƙirar PCB, kayan aiki, da man gyarawa da aka yi amfani da su.

5.2 Ajiya da Hancin Danshi

Kayan aikin suna da Matakin Hancin Danshi (MSL) na 3. Lokacin da ainihin jakar kariya daga danshi tare da desiccant ba a buɗe ba, ya kamata a adana shi a ≤30°C da ≤90% RH kuma a yi amfani da shi cikin shekara guda. Da zarar an buɗe jakar, ya kamata a adana kayan aiki a ≤30°C da ≤60% RH. Idan an fallasa shi ga yanayin yanayi fiye da mako guda (sauri 168), ana buƙatar gasa a 60°C na aƙalla sa'o'i 20 kafin gyarawa don hana fashewar gasasshen popcorn yayin reflow.

5.3 Tsaftacewa da Hanyar Tuƙi

Idan ana buƙatar tsaftacewa bayan gyarawa, kawai ya kamata a yi amfani da kaushi na barasa kamar isopropyl alcohol. Takardar ta jaddada cewa LEDs na'urori ne masu aiki da wutar lantarki. Don tabbatar da daidaiton haske lokacin tuƙi da yawa LEDs a layi daya, ya kamata a sanya resistor na iyakance wutar lantarki na kowane LED a jere. Wannan yana rama ƙananan bambance-bambance a cikin ƙarfin wutar gaba (V_F) tsakanin na'urori guda ɗaya.

6. Bayanan Aikace-aikace da Abubuwan Ƙira

6.1 Yanayin Aikace-aikace na Yau da Kullun

Babban aikace-aikace shine a matsayin mai fitar da infrared a cikin sarrafa nesa na mabukaci don talabijin, tsarin sauti, da akwatunan saiti. Tsayin zango na 940nm kusan ba a iya gani ga idon ɗan adam, yana rage gurɓataccen haske da ake gani. Hakanan ya dace don hanyoyin haɗin watsa bayanan infrared na ɗan gajeren zango, firikwensin tsarin tsaro (misali, na'urorin ganowa na katako), da sarrafa masana'antu inda ake buƙatar siginar da ba ta taɓawa ba. Fakitin kallon gefe yana da fa'ida lokacin da ake buƙatar fitar da katakon IR a layi daya da saman PCB, kamar a cikin aikace-aikacen firikwensin gefe ko cikin na'urori masu siriri.

6.2 Abubuwan Ƙira

Dole ne masu ƙira su yi la'akari da waɗannan:Gudanar da Zafi:Dole ne a mutunta raguwar matsakaicin gudun gaba tare da haɓakar yanayin yanayi (Fig.2) don tabbatar da tsawon rai.Tuƙin Wutar Lantarki:Tushen wutar lantarki na yau da kullun ko tushen wutar lantarki tare da resistor na jere wajibi ne. Tuƙi tare da tushen wutar lantarki mai sauƙi zai haifar da guduwar zafi da gazawa.Daidaituwar Gani:Ƙunƙuntaccen kallon kusa na digiri 18 yana buƙatar daidaitawa daidai da mai karɓar photodetector ko hanyar watsawa da aka yi niyya.Tsarin PCB:Bi shawarar girman gindin gyarawa don tabbatar da ingantaccen kwanciyar hankali na injiniya da amincin haɗin gyarawa.

6.3 Kwatance da Zaɓi

Idan aka kwatanta da daidaitattun LED infrared na zagaye 5mm ko 3mm, wannan fakitin SMT na kallon gefe yana adana sararin samaniya a tsaye. Idan aka kwatanta da masu fitar da haske masu faɗi, ƙunƙuntaccen katakon sa yana ba da ƙarfi mafi girma akan axis, wanda ke da amfani ga tsawon zango ko ƙarancin amfani da wutar lantarki. Tsayin zango na 940nm, idan aka kwatanta da na kowa 850nm, yana ba da ƙarancin haske ja da ake iya gani, wanda ake so a cikin aikace-aikacen mabukaci. Ya kamata masu ƙira su zaɓi wannan ɓangaren lokacin da ƙirar ke buƙatar tushen infrared mai ɗaukar hoto na saman, mai fitar da gefe tare da katakon da aka mai da hankali don sarrafa nesa ko firikwensin kusanci.

7. Tambayoyin da ake yawan yi (FAQ)

Q: Menene bambanci tsakanin tsayin zango (λ_Peak) da tsayin zango mai rinjaye (λ_d)?

A: Tsayin zango shine tsayin zango inda ƙarfin haske da aka fitar ya fi girma (940nm ga wannan na'urar). Tsayin zango mai rinjaye an samo shi daga fahimtar launi kuma ba shi da alaƙa da na'urorin infrared masu launi ɗaya; yana da mahimmanci ga LED masu iya gani.

Q: Zan iya tuƙa wannan LED kai tsaye daga fil ɗin microcontroller?

A: A'a. Fil ɗin microcontroller yawanci ba zai iya samar da 20mA cikin aminci ko kullum ba. Dole ne ku yi amfani da maɓalli na transistor (misali, NPN ko MOSFET) wanda microcontroller ke sarrafa shi don sarrafa wutar lantarki na LED, kuma koyaushe ku haɗa da resistor mai iyakance wutar lantarki na jere.

Q: Me ya sa yanayin ajiya ya yi tsauri sosai bayan buɗe jakar?

A> Fakitin filastik yana ɗaukar danshi. A lokacin babban tsarin gyarar infrared reflow, wannan danshin da aka kama zai iya yin tururi da sauri, yana haifar da rabuwar ciki ko \"popcorning,\" wanda ke fashe ɓangaren kuma ya lalata shi. Tsarin gasa yana cire wannan danshin da aka ɗauka.

Q: Ta yaya zan iya ƙididdige ƙimar resistor na jere?

A> Yi amfani da Dokar Ohm: R = (V_supply- V_F) / I_F. Misali, tare da samar da wutar lantarki 5V, V na yau da kullun_Fna 1.3V, da I da ake so_Fna 20mA: R = (5 - 1.3) / 0.02 = 185 Ohms. Yi amfani da ƙimar ma'auni na gaba (misali, 180 ko 200 Ohms) kuma tabbatar da ƙimar wutar lantarki na resistor ya isa (P = I²* R).

8. Ka'idojin Fasaha da Trends

8.1 Ka'idar Aiki

Diode Mai Fitowa Haske na Infrared (IRED) yana aiki akan ka'idar electroluminescence a cikin haɗin p-n na semiconductor. Lokacin da aka yi amfani da ƙarfin wutar gaba, electrons daga yankin n da ramuka daga yankin p ana shigar da su cikin yankin haɗin gwiwa. Lokacin da waɗannan masu ɗaukar caji suka sake haɗuwa, suna sakin makamashi a cikin nau'in photons. Tsayin zango na waɗannan photons an ƙaddara shi ta hanyar ƙarfin bandgap na kayan semiconductor. Gallium Arsenide (GaAs) yana da bandgap wanda yayi daidai da radiation na infrared, musamman kusan 940nm a cikin wannan na'urar. Fakitin kallon gefe ya haɗa da ruwan tabarau na epoxy wanda ke siffanta hasken da aka fitar zuwa ƙayyadadden kallon kusa.

8.2 Trends na Masana'antu

Trend a cikin ɓangarorin infrared daban-daban yana zuwa ga ingantacciyar inganci (ƙarin fitarwa na haske a kowace raka'a na shigar da wutar lantarki), ƙananan girman fakitin don ba da damar ƙananan na'urori na ƙarshe, da ƙara dacewa tare da ka'idojin watsa bayanai masu sauri don aikace-aikace kamar IrDA. Hakanan ana mai da hankali kan inganta aminci da daidaito don kasuwannin motoci da masana'antu. Haɗa mai fitarwa tare da da'irar tuƙi ko photodetector cikin na'ura ɗaya wani sabon abu ne na gama gari, yana sauƙaƙa ƙira ga masu amfani na ƙarshe. Ƙaura zuwa kayan da ba su da gubar da ka'idojin RoHS, kamar yadda aka gani a cikin wannan ɓangaren, ma'auni ne na masana'antu na duniya.