LTST-C281KRKT-5A SMD LED Takardar Bayani - Girman 2.8x1.6x0.35mm - Ƙarfin Wutar Lantarki 1.7-2.3V - Launi Ja - Takardar Fasaha ta Hausa

1. Bayyani Game da Samfur

LTST-C281KRKT-5A na'urar da ake hawa a saman (SMD) ce mai fitar da haske (LED) wadda aka tsara don aikace-aikacen lantarki na zamani masu ƙarancin sarari. Tana cikin rukunin LED na siriri, tana da tsayi mai ƙarancin gaske. Na'urar tana amfani da kayan semiconductor na AlInGaP (Aluminum Indium Gallium Phosphide) don samar da fitowar haske ja mai ƙarfi. Wannan haɗin tsarin siriri da fasahar kayan aiki mai inganci ya sa ya dace da haɗawa cikin nau'ikan na'urorin lantarki na masu amfani da na masana'antu inda sarari na allo da tsayin kayan aiki suke mahimman ƙayyadaddun ƙira.

Babban fa'idodinsa sun haɗa da bin ka'idojin RoHS (Ƙuntata Abubuwa Masu Illa), wanda ya sanya ta a matsayin samfurin kore. Ana ba da kunshin a cikin tef ɗin daidaitaccen masana'antu na 8mm akan reels masu diamita 7-inch, yana tabbatar da dacewa da kayan aikin haɗawa na atomatik mai sauri. Bugu da ƙari, an tsara shi don jure tsarin gyarar reflow na infrared (IR), wanda shine ma'auni don samar da ƙungiyoyin allunan da'ira (PCBAs) da yawa.

2. Zurfin Binciken Ma'auni na Fasaha

2.1 Matsakaicin Matsakaicin Ƙimar

Waɗannan ƙimar suna ayyana iyakokin damuwa waɗanda za su iya haifar da lalacewa na dindindin ga na'urar. Ba a yi niyya don aiki na yau da kullun ba. Matsakaicin ci gaba na halin yanzu (DC) an ƙididdige shi a 30 mA. Don aikin bugun jini, matsakaicin halin yanzu na 80 mA yana yiwuwa a ƙarƙashin takamaiman sharuɗɗa: cikakken aiki na 1/10 da faɗin bugun jini na 0.1 ms. Matsakaicin ɓarnawar wutar lantarki shine 75 mW, wanda aikin halin yanzu da ƙarfin wutar lantarki ne. Na'urar na iya jure ƙarfin wutar lantarki har zuwa 5 V. Yankunan zafin jiki da ajiya an ƙayyade daga -30°C zuwa +85°C da -40°C zuwa +85°C, bi da bi, suna ayyana ƙarfin muhallinsa.

2.2 Halayen Lantarki da Na'urar Gani

Ana auna waɗannan ma'auni a daidaitaccen yanayin gwaji na zafin muhalli (Ta) na 25°C da halin yanzu na gaba (IF) na 5 mA, sai dai idan an faɗi daban.

• Ƙarfin Hasken (Iv):Ya kewayo daga mafi ƙarancin millicandelas (mcd) 4.5 zuwa matsakaicin 45.0 mcd. Ƙimar ta yau da kullun tana cikin wannan kewayon. Ana auna ƙarfi ta amfani da firikwensin da aka tace don dacewa da amsawar hasken idon ɗan adam (lanƙwasa CIE).
• Kusurwar Dubawa (2θ1/2):An ayyana shi azaman digiri 130. Wannan shine cikakken kusurwar da ƙarfin haske ya faɗi zuwa rabin ƙimarsa da aka auna akan tsakiyar axis (digiri 0). Faɗin kusurwar dubawa kamar wannan yana nuna ƙarin tsarin fitar da haske.
• Matsakaicin Tsawon Tsawon (λP):Yawanci nanomita 639 (nm). Wannan shine tsawon tsawon lokacin da rarraba ikon bakan na hasken da aka fitar yana kan iyakar iyakarsa.
• Matsakaicin Tsawon Tsawon (λd):Yawanci 631 nm a IF=5mA. Wannan ma'auni ne na launi wanda aka samo daga zanen launi na CIE, wanda ke wakiltar launin hasken da aka gani. Shi ne tsawon tsawon guda ɗaya wanda ya fi dacewa da wurin launi na LED.
• Faɗin Bakan (Δλ):Yawanci 20 nm. Wannan shine cikakken faɗi a rabin matsakaicin (FWHM) na bakan fitarwa, yana nuna tsaftar launi. Ƙaramin ƙimar yana nuna mafi yawan tushen haske mai launi ɗaya.
• Ƙarfin Wutar Lantarki na Gaba (VF):Ya kewayo daga 1.7 V zuwa 2.3 V a IF=5mA. Wannan shine faɗuwar ƙarfin wutar lantarki a kan LED lokacin da yake gudanar da halin yanzu.
• Halin Yanzu na Baya (IR):Matsakaicin microamperes (μA) 10 lokacin da aka yi amfani da ƙarfin wutar lantarki na baya (VR) na 5 V. Wannan ma'auni yana nuna ingancin haɗin semiconductor.

3. Bayanin Tsarin Binning

Don tabbatar da daidaito a cikin samar da yawa, ana rarraba LED zuwa kwandon aiki bisa mahimman ma'auni. LTST-C281KRKT-5A yana amfani da tsarin binning mai girma biyu.

3.1 Binning Ƙarfin Wutar Lantarki na Gaba

Ana rarraba LED ta ƙarfin wutar lantarki na gaba (VF) da aka auna a 5 mA. Lambobin kwandon da kewayon su sune:

- E2:1.70 V zuwa 1.90 V

- E3:1.90 V zuwa 2.10 V

- E4:2.10 V zuwa 2.30 V

Ana amfani da jurewar ±0.1 V ga kowane kwandon.

3.2 Binning Ƙarfin Hasken

Hakanan ana rarraba LED ta ƙarfin haskensu (Iv) da aka auna a 5 mA. Lambobin kwandon da kewayon su sune:

- J:4.50 mcd zuwa 7.10 mcd

- K:7.10 mcd zuwa 11.20 mcd

- L:11.20 mcd zuwa 18.00 mcd

- M:18.00 mcd zuwa 28.00 mcd

- N:28.00 mcd zuwa 45.00 mcd

Ana amfani da jurewar ±15% ga kowane kwandon ƙarfi. Takamaiman haɗin lambobin kwandon ƙarfin wutar lantarki da ƙarfi don wani yanki na samarwa yana ayyana takamaiman halayen aikin sa.

4. Bayanin Injiniya da Kunshin

4.1 Girman Kunshin

Na'urar tana da ƙafar kunshin daidaitaccen EIA. Mahimman girma sun haɗa da tsawon 2.8 mm, faɗin 1.6 mm, da tsayi mai mahimmanci kawai na 0.35 mm, wanda ya cancanci shi a matsayin \"siriri sosai.\" An ba da cikakkun zane-zane masu girma tare da jurewa (yawanci ±0.10 mm) a cikin takardar bayani don daidaitaccen ƙirar ƙirar ƙasa ta PCB.

4.2 Shawarar Tsarin Kafet ɗin Gyarawa

An haɗa da ƙafar kafet ɗin gyarawa da aka ba da shawarar don tabbatar da samuwar haɗin gyarawa mai dogaro yayin gyarar reflow. Yin bin waɗannan girma yana taimakawa hana kabari (kayan aiki suna tsaye a ƙarshen ɗaya) kuma yana tabbatar da damshin da ƙarfin injiniya.

4.3 Kunshin Tef da Reel

Ana ba da LED a cikin tef ɗin ɗaukar kaya mai zane tare da tef ɗin kariya, wanda aka nannade akan reels masu diamita 7-inch (178 mm). Daidaitaccen adadin reel shine guda 5,000. Kunshin ya yi daidai da ƙayyadaddun ANSI/EIA-481. Mahimman bayanan kulawa sun haɗa da: an rufe aljihunan fanko, mafi ƙarancin adadin fakitin guda 500 don ragowar, da matsakaicin abubuwan da suka ɓace biyu a jere da aka yarda da kowane reel.

5. Jagororin Gyarawa da Haɗawa

5.1 Bayanin Yanayin Gyarar Reflow na Infrared

Bangaren ya dace da hanyoyin gyarar da ba su da gubar (Pb-free). An ba da shawarar bayanin reflow, tare da mahimman ma'auni da suka haɗa da yankin dumama kafin (120-150°C), matsakaicin zafin jiki na 260°C da aka kai a haɗin gyarar, da lokacin da ya wuce ruwa wanda aka keɓance don gami da ba tare da gubar ba. Kayan aikin bai kamata a fallasa shi zuwa 260°C fiye da dakika 10 ba. Wannan bayanin yana tabbatar da haɗin gyarar da aka dogara ba tare da sanya kunshin LED ga matsanancin damuwa na zafi ba.

5.2 Gyarar Hannu

Idan gyarar hannu tare da ƙarfe ya zama dole, ya kamata a yi shi tare da zafin ƙarshen ƙarfe bai wuce 300°C ba, kuma lokacin gyarar ya iyakance ga matsakaicin dakika 3 a kowane kafet. Ya kamata a yi gyarar sau ɗaya kawai don guje wa lalacewar zafi.

5.3 Tsaftacewa

Idan ana buƙatar tsaftacewa bayan gyarawa, kawai ya kamata a yi amfani da takamaiman kaushi. Ana ba da shawarar nutsar da LED a cikin barasa na ethyl ko isopropyl a zafin daki na ƙasa da minti ɗaya. Yin amfani da sinadarai marasa ƙayyadaddun bayanai ko masu tsauri na iya lalata ruwan tabarau na filastik ko kunshin.

5.4 Yanayin Ajiya

Don ajiya na dogon lokaci, muhallin bai kamata ya wuce 30°C da 60% zafi ba. Da zarar an cire shi daga jakar shinge na asali, ya kamata a yi reflow na IR a cikin sa'o'i 672 (kwanaki 28) don hana shan danshi, wanda zai iya haifar da \"popcorning\" ko rabuwa yayin gyarawa. Don ajiya fiye da wannan lokacin, ana ba da shawarar gasa a kusan 60°C na aƙalla sa'o'i 20 kafin haɗawa don fitar da danshi.

6. Shawarorin Aikace-aikace da La'akari da Ƙira

6.1 Yanayin Aikace-aikace na Yau da Kullun

Wannan LED an yi niyya ne don kayan aikin lantarki na gabaɗaya, gami da amma ba'a iyakance ga na'urorin sarrafa ofis, kayan aikin sadarwa, da na'urorin gida ba. Tsarinsa mai siriri ya sa ya dace don alamun hasken baya a cikin na'urori masu siriri kamar wayoyin hannu, kwamfutocin hannu, kwamfutocin siriri, da na'urorin sarrafa nesa. Hakanan ya dace don alamomin yanayi, hasken panel, da hasken ado a cikin na'urorin lantarki na masu amfani.

6.2 Ƙirar Da'irar Tuƙi

LED na'urar da ake sarrafa halin yanzu ce. Don tabbatar da daidaiton haske, musamman lokacin da aka haɗa LED da yawa a layi daya, yanaana ba da shawarar sosaidon amfani da resistor mai iyakance halin yanzu a jere tare da kowane LED. Tuƙi LED kai tsaye daga tushen ƙarfin wutar lantarki ba tare da resistor na jere ba (kamar yadda aka nuna a cikin zanen da'irar da ba a ba da shawarar ba) zai iya haifar da bambance-bambancen haske saboda bambance-bambancen halitta a cikin ƙarfin wutar lantarki na gaba (halayen I-V) tsakanin LED guda ɗaya, har ma daga kwandon ɗaya. Resistor na jere yana daidaita halin yanzu da ke gudana ta kowane LED.

6.3 Kariya daga Zubar da Wutar Lantarki (ESD)

LED suna da hankali ga zubar da wutar lantarki. ESD na iya haifar da lalacewa a ɓoye ko bala'i, yana bayyana azaman babban ɓarkewar halin yanzu na baya, ƙarancin ƙarfin wutar lantarki na gaba, ko gazawar haskakawa a ƙananan halin yanzu. Don hana lalacewar ESD:

- Ma'aikata ya kamata su sa bel ɗin wuyan da aka kafa ko safofin hannu masu hana tashin hankali.

- Duk tashoshin aiki, kayan aiki, da kayan aiki dole ne a kafa su da kyau.

- Yi amfani da masu ionizer don kawar da cajin tsaye wanda zai iya taruwa akan ruwan tabarau na filastik.

- Sarrafa na'urori a cikin yankunan da aka sarrafa ESD (EPAs).

7. Kwatancen Fasaha da Bambance-bambance

Babban abin da ya bambanta LTST-C281KRKT-5A shine tsayinsa na 0.35 mm, wanda ya fi ƙasa da yawancin daidaitattun LED na SMD (misali, kunshin 0603 ko 0805 sau da yawa suna da tsayi kusan 0.8-1.0 mm). Wannan ya sa ya zama zaɓi mai ƙarfi don ƙirar samfuran siriri. Amfani da fasahar AlInGaP, idan aka kwatanta da tsofaffin fasahohi kamar GaAsP, yana ba da ingantaccen inganci na haske da ingantaccen aiki a yanayin zafi, yana haifar da fitowar haske ja mai haske da kwanciyar hankali. Dacewarsa tare da haɗawa ta atomatik da daidaitattun hanyoyin reflow ya daidaita shi da ayyukan samarwa na zamani, masu tsada.

8. Tambayoyin da ake yawan yi (Bisa Ma'auni na Fasaha)

Q: Menene bambanci tsakanin tsawon tsawon kololuwa da tsawon tsawon rinjaye?

A: Tsawon tsawon kololuwa (λP) shine tsawon tsawon jiki na mafi girman madaidaicin bakan haske. Tsawon tsawon rinjaye (λd) ra'ayi ne na kimiyyar launi wanda ke wakiltar launin da aka gani akan ginshiƙi na CIE. Ga LED ja, sau da yawa suna kusa amma ba iri ɗaya ba.

Q: Zan iya tuƙi wannan LED a matsakaicin halin yanzu na DC na 30 mA akai-akai?

A: Yayin da yake yiwuwa, yin aiki a matsakaicin ƙimar ƙima na iya rage dogon lokacin dogaro da fitowar haske saboda zafi. Don mafi kyawun rayuwa da ingantaccen aiki, rage ƙima—yin aiki a halin yanzu ƙasa da matsakaicin, kamar 20 mA—aikin ƙira ne na gama gari.

Q: Me ya sa binning yake da mahimmanci?

A: Binning yana tabbatar da daidaiton launi da haske a cikin aikace-aikace. Misali, amfani da LED daga kwandon VF da Iv iri ɗaya akan panel ɗin sarrafawa zai hana bambance-bambancen launin ja ko matakan haske tsakanin alamomin kusa.

Q: Ana buƙatar sinkon zafi?

A: Ganin ƙarancin ɓarnawar wutar lantarki (75 mW max) da ƙananan girma, yawanci ba a buƙatar takamaiman sinkon zafi don aiki na yau da kullun a cikin ƙayyadaddun iyakokin halin yanzu da zafin jiki. Duk da haka, daidaitaccen shimfidar PCB don barin wasu ɓarnawar zafi ta hanyar kafet ɗin tagulla aiki ne mai kyau.

9: Nazarin Ƙira da Amfani

Yanayi: Ƙirar alamar yanayi don na'urar bin diddigin lafiyar jiki.

Na'urar tana da matsanancin ƙuntatawa na sarari, tare da kasafin kudin kauri na PCB ƙasa da 1.0 mm. An zaɓi LTST-C281KRKT-5A, tare da tsayinsa na 0.35 mm. An zaɓi halin yanzu na tuƙi na 5 mA don daidaita haske tare da rayuwar baturi. An ƙayyade LED daga kwandon ƙarfin wutar lantarki na E3 da kwandon ƙarfi na L don tabbatar da daidaitaccen aiki. An ƙirƙira ƙirar ƙasa ta PCB bisa ga shawarar shimfidar takardar bayani. Yayin haɗawa, mai kera yana bin bayanin reflow na IR da aka bayar don man gyarar da ba shi da gubar da aka yi amfani da shi. An aiwatar da matakan kariya na ESD akan layin samarwa. Sakamakon shine abin dogaro, daidaitaccen haske ja mai caji/alamar wutar lantarki wanda ya cika burin ƙirar injiniya ba tare da lalata aikin gani ba.

10. Gabatarwar Ka'idar Fasaha

LED ya dogara ne akan tsarin heterostructure na semiconductor wanda aka yi da Aluminum Indium Gallium Phosphide (AlInGaP) wanda aka girma akan substrate. Lokacin da aka yi amfani da ƙarfin wutar lantarki na gaba, ana shigar da electrons da ramuka cikin yankin aiki inda suke sake haɗuwa, suna sakin makamashi a cikin nau'in photons (haske). Takamaiman abun da ke cikin gami na AlInGaP yana ƙayyade ƙarfin bandgap, wanda ke da alaƙa kai tsaye da tsawon tsawon (launi) na hasken da aka fitar—a wannan yanayin, ja (~631-639 nm). Ruwan tabarau \"ruwa mai tsabta\" yawanci ana yin shi da kayan epoxy ko silicone wanda aka yi masa gyare-gyare akan guntu. Wannan ruwan tabarau yana aiki don kare mutuwar semiconductor, siffata fitar da haske (yana shafar kusurwar dubawa), da haɓaka ingancin fitar da haske.

11. Trends na Masana'antu da Ci gaba

Trend a cikin SMD LED don na'urorin lantarki na masu amfani yana ci gaba zuwa ga ƙananan ƙira da ingantaccen inganci. Tsayin kunshin yana raguwa don ba da damar ƙananan samfuran ƙarshe. Hakanan ana mai da hankali kan inganta dogaro da aikin LED a ƙarƙashin yanayin zafi mai zafi, kamar waɗanda aka ci karo da su yayin gyarar reflow da a aikace-aikace kusa da wasu abubuwan da ke haifar da zafi. Bugu da ƙari, ci gaban fasahar phosphor da ƙirar guntu suna turawa don ingantaccen inganci na haske (ƙarin fitowar haske a kowace watt na lantarki) da ingantaccen launi a duk launukan LED. Matsi zuwa ga daidaitaccen kunshin da tsarin tef-da-reel yana goyan bayan cikakken atomatik, samar da girma mai yawa, yana rage farashin haɗawa da inganta daidaito.