LTR-323DB Phototransistor Datasheet - Garken 5mm - 30V Reverse Voltage - Tsawon Tsinkaya 940nm - Takardar Fasaha ta Hausa

1. Bayanin Samfur

LTR-323DB silicon NPN planar phototransistor ne wanda aka ƙera don gano infrared. Babban aikinsa shine canza hasken infrared da ke faɗowa zuwa wutar lantarki. Na'urar tana da ruwan tabarau na ciki wanda ke haɓaka hankalinta na gani, wanda ya sa ta dace da aikace-aikacen da ke buƙatar ingantaccen gano siginar IR. Muhimman wuraren da aka sanya su sun haɗa da saurin amsarsa da ƙarancin ƙarfin capacitor na junction, waɗanda ke da mahimmanci don hankali mai yawan mita ko haske mai bugun jini.

Babban fa'idodin wannan kayan yana cikin ƙayyadaddun ayyukansa. Yana ba da babban mitar yankewa wanda aka kunna ta hanyar halayen sauyawa cikin sauri. An ƙera na'urar don kwanciyar hankali a cikin faɗin zafin aiki, daga -40°C zuwa +85°C. Manyan kasuwannin da aka yi niyya sun haɗa da sarrafa kai da kai, na'urorin lantarki na masu amfani don tsarin sarrafa nesa, kayan aikin tsaro da tsaro, da kuma daban-daban na'urori na keɓancewar gani inda ake buƙatar ingantaccen da saurin gano haske.

2. Bincike Mai Zurfi na Sigogi na Fasaha

2.1 Cikakkun Ƙayyadaddun Iyaka

Cikakkun ƙayyadaddun iyaka suna ayyana iyakokin damuwa waɗanda sama da su lalacewar dindindin na na'urar na iya faruwa. Waɗannan ba yanayin aiki ba ne.

• Rushewar Wutar Lantarki (P_D):150 mW. Wannan shine matsakaicin wutar lantarki da na'urar za ta iya watsawa a matsayin zafi a zafin yanayi (T_A) na 25°C. Wucewa wannan iyaka yana haifar da haɗarin guduwar zafi da gazawa.
• Reverse Voltage (V_R):30 V. Wannan shine matsakaicin ƙarfin lantarki da za a iya amfani da shi a cikin juzu'in baya a kan junction na mai tara-mai fitarwa. Karfin lalacewa (V_(BR)R) yawanci yayi daidai ko ya fi wannan ƙimar.
• Kewayon Zafin Aiki (T_A):-40°C zuwa +85°C. An tabbatar da cewa na'urar za ta cika ƙayyadaddun lantarkinta a cikin wannan kewayon zafin yanayi.
• Kewayon Zafin Ajiya (T_stg):-55°C zuwa +100°C. Ana iya adana kayan aikin ba tare da amfani da wutar lantarki ba a cikin waɗannan iyakoki ba tare da lalacewa ba.
• Zafin Solder na Jagora:260°C na tsawon dakika 5, ana auna shi 1.6mm daga jikin garken. Wannan yana ayyana bayanin sake kunnawa ko solder na hannu don hana fashewar garken ko lalacewar ciki.

2.2 Halaye na Lantarki & Na Gani

Ana auna waɗannan sigogi a ƙarƙashin daidaitattun yanayin gwaji (T_A=25°C) kuma suna ayyana aikin na'urar.

• Reverse Breakdown Voltage, V_(BR)R:Mafi ƙanƙanta 30 V (I_R= 100µA, E_e=0). Ya tabbatar da cewa na'urar za ta iya jurewa matsakaicin ƙarfin lantarki na baya da aka bayyana.
• Reverse Dark Current, I_D(R):Matsakaici 30 nA (V_R=10V, E_e=0). Wannan shine magudanar ruwa lokacin da babu haske da ke faruwa. Ƙaramin ƙima yana da mahimmanci don rabo siginar zuwa amo a cikin ganin ƙarancin haske.
• Open Circuit Voltage, V_OC:Yawanci 350 mV (λ=940nm, E_e=0.5 mW/cm²). Ƙarfin lantarki da aka samar a kan na'urar da aka buɗe kewaye a ƙarƙashin haske, wanda ke nuna ikonsa na samar da wutar lantarki.
• Lokacin Tashi (T_r) & Lokacin Faɗuwa (T_f):Matsakaici 50 nsec kowanne (V_R=10V, λ=940nm, R_L=1kΩ). Waɗannan saurin lokutan sauyawa suna ba da damar gano siginar IR da aka daidaita mai yawan mita, wani muhimmin siffa don sarrafa nesa da watsa bayanai.
• Short Circuit Current, I_S:Mafi ƙanƙanta 8 µA, Yawanci 13 µA (V_R=5V, λ=940nm, E_e=0.1 mW/cm²). Photocurrent lokacin da fitarwa ta gajarta. Wannan sigogi yana da alaƙa kai tsaye da hankali.
• Jimlar Capacitance, C_T:Matsakaici 25 pF (V_R=3V, f=1MHz, E_e=0). Ƙarancin capacitor na junction yana ba da gudummawa ga babban mitar yankewa da saurin amsa.
• Peak Sensitivity Wavelength, λ_SMAX:Yawanci 900 nm. Na'urar tana da mafi girman hankali ga hasken infrared kusa da wannan tsawon tsinkaya, wanda ya sa ta dace da haɗawa da 940nm IR LEDs.

3. Bincike na Lanƙwan Aiki

Takardar bayanai tana ba da lanƙwan halaye da yawa waɗanda ke kwatanta aiki a ƙarƙashin yanayi daban-daban.

3.1 Dark Current vs. Reverse Voltage (Hoto na 1)

Wannan lanƙwan yana nuna alaƙar tsakanin magudanar ruwa mai duhu na baya (I_D) da amfani da ƙarfin lantarki na baya (V_R) cikin duhu gaba ɗaya. Wutar lantarki ta kasance ƙasa sosai (a cikin kewayon pA zuwa ƙananan nA) har sai ta kusanci yankin rushewa. Wannan yana tabbatar da kyawawan halayen na'urar na kashe yanayin, yana rage ƙaramin faɗakarwa daga amo.

3.2 Capacitance vs. Reverse Voltage (Hoto na 2)

Wannan jadawalin yana kwatanta yadda capacitor na junction (C_T) yana raguwa yayin da ƙarfin lantarki na baya ya ƙaru. Wannan shine halin da ake ciki na junction PN. Yin aiki a babban ƙarfin lantarki na baya (a cikin iyaka) na iya rage capacitance, yana ƙara inganta amsawar mai yawan mita.

3.3 Photocurrent & Dark Current vs. Ambient Temperature (Hoto na 3 & 4)

Hoto na 3 yana nuna yadda photocurrent ya bambanta da zafin jiki. Photocurrent yawanci yana da ingantaccen coefficient na zafin jiki, ma'ana yana iya ƙaruwa kaɗan tare da zafin jiki don tsayayyen haske. Hoto na 4 yana nuna cewa magudanar ruwa mai duhu (I_D) yana ƙaruwa da yawa tare da zafin jiki. Wannan shine muhimmin la'akari na ƙira: a yanayin zafi mai girma, haɓakar magudanar ruwa mai duhu na iya zama babban tushen amo, mai yuwuwa ya rufe raunin siginar gani.

3.4 Relative Spectral Sensitivity (Hoto na 5)

Wannan watakila shine mafi mahimmancin lanƙwan gani. Yana zana daidaitaccen amsawar na'urar a cikin bakan haske. LTR-323DB yana nuna kololuwar hankali a kusa da 900nm kuma amsa mai amfani daga kusan 800nm zuwa 1050nm. Yana da kusan rashin hankali ga hasken da ake iya gani, yana sa ya kauce wa tsangwama na hasken yanayi a yawancin wurare.

3.5 Photocurrent vs. Irradiance (Hoto na 6)

Wannan lanƙwan yana nuna alaƙar layi tsakanin ƙarfin haske da ke faruwa (haske E_e) da photocurrent da aka samar (I_P) a takamaiman tsawon tsinkaya (940nm). Layin yana da kyau a cikin shekaru da yawa na haske, wanda yake da mahimmanci don aikace-aikacen hankali na analog inda ƙarfin haske ke ɗauke da bayanai.

3.6 Sensitivity Diagram & Power Derating (Hoto na 7 & 8)

Hoto na 7 yana kwatanta tsarin hankali na kusurwa, wanda aka siffata ta hanyar ruwan tabarau na ciki. Yana nuna ingantaccen filin duba. Hoto na 8 shine lanƙwan rage ƙarfin wutar lantarki, yana nuna yadda matsakaicin ƙarfin wutar lantarki da aka yarda yana raguwa yayin da zafin yanayi ya tashi sama da 25°C. Wannan jadawalin yana da mahimmanci don sarrafa zafi a cikin ƙirar aikace-aikacen.

4. Bayanin Injiniya & Garken

4.1 Girmen Garken

LTR-323DB yana zuwa a cikin daidaitaccen garken radial mai jagora 5mm. Muhimman girmansu sun haɗa da:

• Diamita na garken yana kusan 5mm.
• Ana auna tazarar jagora inda jagororin suka fito daga jikin garken.
• An yarda da matsakaicin tsinkayar resin na 1.5mm a ƙarƙashin flange.
• Duk ƙayyadaddun girma yawanci ±0.25mm sai dai idan an faɗi.

Gano Polarization:Doguwar jagora yawanci shine mai tara, kuma gajeren jagora shine mai fitarwa. Garken na iya samun gefe mai lebur ko wasu alamomi kusa da jagoran cathode (mai fitarwa). Koyaushe tabbatar da polarization kafin shigarwa don hana lalacewa.

5. Jagororin Solder & Taro

Daidaitaccen sarrafawa yana da mahimmanci ga amincin.

• Reflow Soldering:Bi bayanin da aka ƙayyade: matsakaicin zafin jiki na 260°C na matsakaicin dakika 5, ana auna shi 1.6mm (0.063") daga jikin garken. Yi amfani da bayanin zafi mai sarrafawa don guje wa girgizar zafi.
• Hand Soldering:A yi amfani da zafi ga jagora, ba jikin garken ba. Iyakance lokacin solder kowane jagora zuwa ƙasa da dakika 3 tare da zafin ƙarshen ƙarfe na solder a ƙasa da 350°C.
• Tsaftacewa:Yi amfani da masu tsaftacewa masu laushi waɗanda suka dace da resin epoxy. Guji tsaftacewa ta ultrasonic saboda yana iya lalata mutuwar ciki ko igiyoyin igiya.
• Yanayin Ajiya:Ajiye a cikin yanayi mai bushewa, anti-static a cikin ƙayyadaddun kewayon zafin ajiya (-55°C zuwa +100°C). Ya kamata a adana na'urori masu hankali ga danshi a cikin jakunkuna masu rufewa tare da desiccant.

6. Shawarwarin Aikace-aikace

6.1 Yanayin Aikace-aikace na Yau da Kullun

• Masu Karɓar Sarrafa Nesa na Infrared:Saurin lokacin sauyawa (50ns) ya sa ya dace don ɓoyayyen siginar daga TV, sauti, da na'urorin sarrafa nesa ta amfani da daidaitawa na 38kHz ko 40kHz.
• Gano Abu & Ƙidaya:Ana amfani da shi a cikin na'urori masu gano katsewar katako don sarrafa kai da kai, injinan sayar da kaya, da ƙofofin tsaro.
• Masu Rufe Gani:Gano ramuka akan faifan juyawa don saurin gani ko matsayi.
• Opto-isolators:Samar da keɓancewar lantarki tsakanin da'irori yayin watsa siginar ta hanyar haske.
• Shinge na Haske & Labulen Tsaro:A cikin tsarin tsaro na masana'antu.

6.2 La'akari na Ƙira

• Bias Circuit:Ana iya amfani da phototransistor a cikin sifofi guda biyu na gama gari: yanayin photoconductive (reverse-biased, saurin amsa) ko yanayin photovoltaic (zero bias, babu magudanar ruwa mai duhu). Don sauri, yi amfani da juzu'in baya (misali, 5V-10V) tare da resistor na kaya (R_L). Ƙimar R_Lyana ciniki tsakanin jujjuyawar ƙarfin fitarwa da bandwidth (saboda lokaci mai dorewa na RC tare da C_T).
• Ambient Light Rejection:Tunda na'urar tana da hankali ga IR 900nm, hasken rana ko kwan fitila waɗanda ke ɗauke da IR na iya shafar ta. Yi amfani da tacewa na wucewa ta IR na zahiri (tana toshe hasken da ake iya gani) ko hanyoyin haske masu daidaitawa tare da ganowa na aiki tare a cikin mahimman aikace-aikace.
• Temperature Compensation:Don ingantaccen hankali na analog a kan faɗin kewayon zafin jiki, yi la'akari da da'irar don rama bambancin magudanar ruwa mai duhu da photocurrent tare da zafin jiki.
• Lens Alignment:Ruwan tabarau na ciki yana da takamaiman kusurwar duba. Tabbatar da daidaitaccen daidaitawar gani tare da tushen IR don matsakaicin ƙarfin siginar.

7. Kwatancen Fasaha & Bambance-bambance

Idan aka kwatanta da daidaitaccen photodiode, phototransistor kamar LTR-323DB yana ba da ribar wutar lantarki na ciki (h_FEna transistor bipolar), yana haifar da mafi girman fitarwar wutar lantarki don shigarwar haske iri ɗaya. Wannan yana kawar da buƙatar amplifier na transimpedance na waje a yawancin da'irori masu sauƙin ganowa. Idan aka kwatanta da sauran phototransistors, manyan bambance-bambancen LTR-323DB sunesaurin lokacin sauyawa (50ns)daƙarancin capacitance (25pF matsakaici), waɗanda tare suke ba da damar babban bandwidth mai amfani. Ruwan tabarau na haɗe kuma yana ba da mafi girman hankali da jagora fiye da na'urori tare da taga mai lebur.

8. Tambayoyin da ake yawan yi (Dangane da Sigogi na Fasaha)

Q: Menene bambanci tsakanin gajeriyar wutar lantarki (I_S) da photocurrent a cikin lanƙwan?

A: I_Ssigogi ne na musamman da aka auna a ƙarƙashin yanayin gajeriyar kewaye (V_R=5V yana kwaikwayi ƙarancin kaya). Photocurrent (I_P) a cikin lanƙwan shine fitarwar wutar lantarki na gabaɗaya, wanda ya dogara da resistor na kaya da ƙarfin lantarki na bias. Don ƙaramin resistor na kaya, I_P≈ I_S.

Q: Zan iya amfani da wannan tare da 850nm IR LED?

A: Ee, amma tare da rage hankali. Duba Hoto na 5. Hankalin dangi a 850nm ya fi ƙasa a 900nm. Kuna iya buƙatar tushen IR mai ƙarfi ko ribar gani don cimma siginar fitarwa iri ɗaya.

Q: Me yasa magudanar ruwa mai duhu ke ƙaruwa tare da zafin jiki, kuma me yasa yake da mahimmanci?

A: Magudanar ruwa mai duhu yana faruwa ne saboda masu ɗaukar caji da aka samar da zafi a cikin junction semiconductor. Yayin da zafin jiki ya tashi, ana samar da ƙarin masu ɗaukar caji, yana ƙara wutar lantarki. Wannan wutar lantarki ba ta bambanta da photocurrent, don haka tana aiki azaman amo. A cikin aikace-aikacen zafi mai girma ko ƙarancin haske, wannan amo na iya iyakance mafi ƙarancin siginar da za a iya gano.

Q: Ta yaya zan zaɓi ƙimar resistor na kaya (R_L)?

A: Ciniki ne. Babban R_Lyana ba da babban jujjuyawar ƙarfin fitarwa don takamaiman photocurrent (V_out= I_P* R_L) amma yana rage saurin amsa saboda lokaci mai dorewa τ = R_L* C_T. Don saurin amsa (misali, sarrafa nesa), yi amfani da ƙaramin R_L(misali, 1kΩ kamar yadda yake a cikin yanayin gwaji). Don matsakaicin fitarwar ƙarfin lantarki a cikin aikace-aikacen jinkirin, yi amfani da babban R_L, amma tabbatar da faɗuwar ƙarfin lantarki a kan transistor bai wuce ƙimar sa ba.

9: Nazarin Aikace-aikace na Aiki

Harka: Ƙirar Na'urar Gano Kusanci don Na'urar Tafi-da-gidanka.

Ana iya amfani da LTR-323DB tare da 940nm IR LED mai haɗin gwiwa don gano kasancewar wani abu (kamar kunnen mai amfani yayin kiran waya). Ƙirar za ta buga IR LED kuma ta auna fitarwar phototransistor. Lokacin da wani abu yake kusa, hasken IR da aka nuna yana ƙara photocurrent. Muhimman matakan ƙira:

1. Tsarin Da'ira:Aiki da phototransistor a cikin yanayin photoconductive tare da juzu'in baya na 5V da resistor na kaya (misali, 10kΩ). Ana ɗaukar fitarwa daga mai tara.
2. Daidaitawa & Demodulation:Bugun IR LED a takamaiman mitar (misali, 10kHz). Yi amfani da da'irar ganowa na aiki tare ko ADC na microcontroller don auna siginar a wannan mitar kawai. Wannan yana ƙi hasken yanayi (wanda yawanci DC ko 50/60Hz ne).
3. Saita Kofa:Daidaitu tsarin don kafa tushen fitarwa ba tare da abu ba da ƙimar kofa da ke nuna kusanci. Bambanci tsakanin Hoto na 3 (photocurrent) da Hoto na 4 (magudanar ruwa mai duhu) lanƙwan yana sanar da kewayon siginar da ake tsammani a cikin yanayin zafi.
4. Ƙirar Gani:Yi amfani da ƙaramin shinge tsakanin LED da phototransistor don rage haɗin kai kai tsaye da haɓaka hankali ga hasken da aka nuna. Ruwan tabarau na LTR-323DB yana taimakawa mayar da hankali kan filin da ke kusa.

Wannan harka ta nuna amfani da saurin sauyawa (don aikin bugun jini), hankali (don gano raunin tunani), da mahimmancin sarrafa magudanar ruwa mai duhu mai dogaro da zafin jiki.

10. Ka'idar Aiki

Phototransistor a zahiri transistor junction bipolar (BJT) ne inda wutar lantarki na tushe ke samuwa ta hanyar haske maimakon haɗin lantarki. A cikin tsarin LTR-323DB NPN:

1. Infrared photons tare da makamashi mafi girma fiye da bandgap na silicon suna shiga yankin raguwar tushe-mai tara.
2. Waɗannan photons suna haifar da nau'i-nau'i na electron-rami.
3. Filin lantarki a cikin juzu'in mai tara-tushe mai juzu'i yana share waɗannan masu ɗaukar caji, yana haifar da photocurrent.
4. Wannan photocurrent yana aiki azaman wutar lantarki na tushe (I_B) don transistor.
5. Sannan transistor yana haɓaka wannan wutar lantarki, yana samar da mafi girman wutar lantarki mai tara (I_C= h_FE* I_B). Wannan shine siginar fitarwa.

Ruwan tabarau na haɗe yana mai da hankali kan hasken da ke shigowa zuwa yankin semiconductor mai aiki, yana ƙara adadin photons da aka sha don haka yana inganta hankali. Ana samun saurin lokacin sauyawa ta hanyar ƙirar ƙira mai kyau na geometry semiconductor da bayanan martaba don rage lokutan wucewa na masu ɗaukar caji da capacitor na junction.

11. Trends na Fasaha

Filin ganowa na infrared yana ci gaba da haɓaka. Trends masu alaƙa da na'urori kamar LTR-323DB sun haɗa da:

• Haɗin kai:Komawa zuwa mafita na haɗin kai waɗanda suka haɗa mai gano hoto, amplifier, da da'irar daidaita siginar (misali, a cikin IC guda ɗaya). Wannan yana sauƙaƙa ƙira kuma yana inganta kariya daga amo.
• Miniaturization:Haɓaka phototransistors a cikin ƙananan garken da'irori na saman (SMD) kamar 1206, 0805, ko ma garken ma'auni don biyan buƙatun ƙananan na'urorin lantarki na masu amfani.
• Ingantaccen Aiki:Bincike na ci gaba yana nufin ƙara rage capacitance da magudanar ruwa mai duhu yayin kiyayewa ko haɓaka hankali, yana ba da damar mafi girman ƙimar bayanai a cikin sadarwar gani da mafi ingantaccen hankali na ƙarancin haske.
• Wavelength Specificity:Haɓaka masu gano tare da ingantaccen tacewa na bakan da aka haɗa cikin garken don inganta ƙin tushen hasken yanayi da ba'a so.

Duk da waɗannan trends, phototransistors masu jagora na radial-leaded kamar LTR-323DB sun kasance masu dacewa sosai saboda sauƙinsu, amincin su, ƙarancin farashi, da sauƙin amfani da su a cikin ɗimbin aikace-aikacen da aka kafa.