Takardar Bayani na LED Infrared 850nm 3.0x3.0x2.1mm 1.7V 1.7W EMC Package

1. Bayanin Samfur

Wannan LED infrared an tsara shi a cikin EMC package tare da ingantaccen aminci, ya dace da sa ido na tsaro, hasken infrared na kyamara, da tsarin gani na inji. Girman package yana 3.00mm x 3.00mm x 2.10mm. Yana da tsayin igiyar ruwa na 850nm, low forward voltage, kuma ya bi ka'idojin RoHS. Matsayin damshi shine Level 3.

1.1 Bayani Gabaɗaya

Wannan samfur yana amfani da tsarin EMC (Epoxy Molding Compound) package, wanda ke ba da ingantaccen aminci da ƙarfin inji. Ana amfani da shi sosai a cikin kayan sa ido na tsaro da kayan lantarki na firikwensin. Ƙaramin ɗaki mai murabba'in 3.0mm yana ba da damar ƙirar layuka masu yawa.

1.2 Siffofi

• Low forward voltage (yawanci 1.7V a 1000mA)
• Tsayin igiyar ruwa λp=850nm
• Amfani da reflow soldering mara gubar
• Matsayin damshi: Level 3 (rayuwar bene na sa'o'i 168)
• Ya bi ka'idojin RoHS

1.3 Amfani

• Tsarin sa ido
• Hasken infrared don kyamara
• Tsarin gani na inji

2. Binciken Ma'aunin Fasaha

2.1 Halayen Haske da Lantarki

Tebur mai zuwa yana taƙaita mahimman halayen haske da lantarki waɗanda aka auna a Ts=25°C tare da gudanarwar gaba na 1000mA (sai dai idan an lura):

Ƙarfin gaba yana daga 1.4V zuwa 2.0V a 1000mA, tare da ƙimar yawanci na 1.7V. Wannan low forward voltage yana rage ɓata wutar lantarki da inganta ingancin tsarin. Tsayin igiyar ruwa yana tsakiya a 850nm, wanda ya dace da firikwensin kyamara na silicon waɗanda ke da mafi kyawun amsawa a kusa da wannan tsayin. Fadin igiyar ruwa na 37nm yana ba da daidaito tsakanin inganci da kwafi tare da tace. Jimlar hasken radiant yana daga 450mW zuwa 1120mW, yana ba da haske mai yawa don haskakawa mai nisa. Kusurwar gani na 90° yana ba da babban haske wanda ya dace da haskakawar yanki. Juriya na zafi daga junction zuwa wurin ɗinki shine 16°C/W, yana nuna ingantaccen aikin zafi.

2.2 Matsakaicin Matsayin Aminci

Don tabbatar da aiki lafiya, LED ba za a wuce wadannan matsakaicin matsaya ta aminci ba:

Lura cewa gudanarwar gaba na 1000mA yana don aiki na bugun jini (1/10 na aiki, faɗin bugun jini 0.1ms). Don aiki na ci gaba, dole ne a sarrafa yaduwar zafi don kiyaye zafin junction a ƙasa da 115°C. Kariyar ESD yayin mu'amala yana da mahimmanci.

3. Tsarin Rarrabuwa

Ana rarraba LEDs bisa ga jimlar hasken radiant (Φe) da tsayin igiyar ruwa (WLP) yayin kera. Lambar rarraba tana kan lakabin tare da takamaiman ƙimar Φe da WLP. Wannan yana ba da daidaiton aikin haske a cikin aikace-aikacen da ke buƙatar layukan LED masu jituwa, kamar allunan haskakawar kyamara.

4. Binciken Lafiyar Aiki

4.1 Ƙarfin Gaba vs Gudanarwar Gaba

Hoto 1-6 yana nuna ƙarfin gaba na yawanci a matsayin aikin gudanarwar gaba. A 1000mA, VF yana kusan 1.7V. Lanƙwasawa tana bin halin diode na yau da kullun. Masu zanen ya kamata su yi la'akari da wannan bambanci yayin ƙirar masu sarrafa ci gaba.

4.2 Gudanarwar Gaba vs Ƙarfin Haske

Hoto 1-7 yana nuna cewa ƙarfin haske na radiant yana ƙaruwa kusan daidai da gudanarwar gaba har zuwa 1000mA, yana nuna inganci mai kyau. A ƙananan magudanar, fitarwa tana ƙasa daidai da gwargwado, amma daidaito yana nuna aiki mai daidaituwa a cikin kewayon aiki mai faɗi.

4.3 Zafin Jiki vs Ƙarfin Haske

Hoto 1-8 yana nuna cewa ƙarfin haske yana raguwa yayin da zafin wurin ɗinki (Ts) yake ƙaruwa. A 85°C, ƙarfin yana raguwa zuwa kusan 80% na ƙimar a 25°C. Dole ne a yi la'akari da wannan tasirin zafi a cikin mahalli masu zafi ko yayin tuki LED kusa da iyakar gudanarwar sa.

4.4 Rarraba Igiyar Ruwa

Hoto 1-9 yana nuna igiyar fitarwa da ke tsakiya a 850nm tare da faɗin rabi na 37nm. Igiyar ruwa tana yawanci ga LEDs infrared bisa ga kayan GaAs. Wannan ƙaramin fitarwa yana dacewa da na'urorin gano hoto na silicon.

4.5 Zanen Haske

Hoto 1-10 yana nuna tsarin haske tare da rabin kusurwa na 45° (cikakken faɗi a rabin iyakar 90°). Tsarin yana kusan Lambertian, yana ba da haske mai daidaitacce a kan yanki mai faɗi.

4.6 Zafin Jiki vs Gudanarwar Gaba

Hoto 1-11 yana nuna matsakaicin halattaccen gudanarwar gaba a matsayin aikin zafin wurin ɗinki. A Ts=25°C, matsakaicin gudanarwa shine 1000mA; a Ts=85°C, yana raguwa zuwa kusan 500mA. Wannan lanƙwasawar ragewa tana da mahimmanci don sarrafa zafi.

5. Bayanin Injiniya da Marufi

5.1 Girman Package

Package na LED yana da girman 3.00mm x 3.00mm x 2.10mm (LxWxH). Jikin package baƙi ne tare da ruwan tabarau na infrared. Ana gano matakan anode da cathode a kallon kasa. Matar cathode tana da yanki mafi girma don shawo kan zafi. Tsarin ɗinki mai ba da shawara yana cikin Hoto 1-5 tare da takamaiman girma (0.69mm, 1.45mm, 0.46mm, da dai sauransu) don tabbatar da ingantaccen haɗin inji da zafi.

5.2 Alamomin Polarity

Ana nuna polarity akan package: an nuna anode (positive) da cathode (negative). Kallon kasa yana nuna matakan ɗinki.

5.3 Girman Tef da Reel

Ana marufi LEDs a cikin tef ɗaukar kaya tare da girma kamar yadda aka nuna a Hoto 2-1. Kowace reel tana ƙunshe da 3000pcs. Girman reel: A=12.7±0.3mm, B=330.2±2mm, C=79.5±1mm, D=14.3±0.2mm. Tef yana da alamar polarity don nuna alkibla.

5.4 Bayanin Lakabin

Lakabin ya ƙunshi lambar sashi, lambar takaddama, lambar rukuni, lambar rarraba (ciki har da jimlar hasken radiant da tsayin igiyar ruwa), rarraba ƙarfin gaba, adadi, da kwanan wata. Lakabin kuma yana ƙunshe da lambar barcode don sawa.

6. Jagoran ɗinki da Taro

6.1 Tsarin Reflow SMT

Tsarin reflow soldering mai ba da shawara yana cikin Hoto 3-1. Mahimman ma'auni: preheating daga 150°C zuwa 200°C na 60-120s; lokaci sama da 217°C: max 60s; zafin kololuwa: 260°C na max 10s; saurin sanyaya: max 6°C/s. Jimlar lokaci daga 25°C zuwa kololuwa ya zama ƙasa da mintuna 8. Bai kamata a yi reflow soldering fiye da sau biyu ba. Idan fiye da sa'o'i 24 suka shuɗe tsakanin reflows biyu, ana iya lalata LEDs saboda shan damshi.

6.2 ɗinki da Hannu

Idan an buƙaci ɗinki da hannu, dole ne zafin ƙarfe ya kasance ƙasa da 300°C kuma lokacin tuntuɓar ya zama ƙasa da daƙiƙa 3. Aiki ɗaya kawai na ɗinki da hannu ya halatta.

6.3 Gyara

Ba a ba da shawarar gyara bayan ɗinki ba. Idan ba makawa, yi amfani da ƙarfe mai kai biyu kuma tabbatar da cewa halayen LED ba su lalace ba.

6.4 Gargaɗi

Kayan rufi shine silicone, mai laushi. Kada a matsa matsatsi mai yawa a saman. Guji ɗora LEDs a kan PCB marar daidaita kuma kada a lanƙwasa allo bayan ɗinki. Kada a yi amfani da ƙarfin inji ko girgiza yayin sanyaya. Ya kamata a guji sanyaya da sauri.

7. Bayanin Marufi da Oda

7.1 Adadin Marufi

Marufi na yau da kullun: 3000pcs a kowace reel. Ana sanya LEDs a cikin tef ɗaukar kaya kuma a nannade su a kan reel kamar yadda EIA-481 yake.

7.2 Marufi Mai Rigakafin Damshi

Ana sanya kowace reel a cikin jakar rigakafin damshi (MBB) tare da busasshiyar abu da katin nuna damshi. Sannan a rufe jakar don kiyaye yanayin rashin damshi. Lakabin ya ƙunshi bayanin matakin damshi.

7.3 Akwatin Kwali

Ana kunshe reels da yawa a cikin akwatin kwali tare da matattarar dacewa don sufuri.

7.4 Yanayin Ajiya

Kafin buɗe jakar aluminum, ajiye a ≤30°C da ≤75% RH har tsawon shekara ɗaya daga ranar marufi. Bayan buɗewa, dole ne a yi amfani da LEDs cikin sa'o'i 168 (kwanaki 7) lokacin da aka adana a ≤30°C da ≤60% RH. Idan lokacin ajiya ya wuce ko kuma busasshiyar abu ta yanke, ana buƙatar gasa a 60±5°C na ≥ sa'o'i 24 kafin amfani.

8. Kariyar Mu'amala

8.1 Ƙuntatawa na Sulfur da Halogen

Yanayin aiki da kayan da ke mu'amala ba dole ne su ƙunshi abubuwan sulfur ko mahadi da suka wuce 100PPM ba. Bromine da chlorine dole ne kowanne ya zama ƙasa da 900PPM, tare da jimlarsu ƙasa da 1500PPM. Wannan yana taimakawa hana lalacewa da canza launi na LED.

8.2 VOCs da Haɗin Kayan

Mahadi masu ƙanshi na halitta (VOCs) daga kayan kayan aiki na iya shiga cikin rufin silicone kuma su haifar da canza launi idan an fallasa su ga zafi da haske. Ana ba da shawarar gwada duk kayan don dacewa a cikin yanayin aikace-aikacen takamaiman. Kada a yi amfani da mannewa da ke fitar da tururin halitta.

8.3 Mu'amala da Saman Silicone

Ruwan tabarau na silicone yana da laushi kuma yana jan ƙura cikin sauƙi. Riƙe ɓangaren daga gefe ta amfani da tweezers ko kayan aiki masu dacewa. Ka guji taɓa saman ruwan tabarau kai tsaye. Idan ana buƙatar tsaftacewa, yi amfani da barasa isopropyl. Ba a ba da shawarar tsaftacewa da ultrasonic ba saboda yana iya lalata LED.

8.4 La'akari da Zanen Wutar Lantarki

Zana da'irar tuki don iyakance gudanarwa ƙasa da matsakaicin matsayi. Yi amfani da resistor mai iyakance gudanarwa ko mai sarrafa ci gaba. Canjin ƙarfi kaɗan na iya haifar da manyan canje-canje na gudanarwa saboda lanƙwasa I-V mai tsayi. Kada a yi amfani da ƙarfin baya ga LED saboda yana iya haifar da ƙaura da lalacewa.

8.5 Zanen Zafi

Sarrafa zafi yana da mahimmanci. Dole ne zafin junction ya wuce 115°C a kowane lokaci. Bayar da isasshen shawo kan zafi ta hanyar yankin jan ƙarfe na PCB da hanyoyin zafi. Juriya na zafi daga junction zuwa wurin ɗinki shine 16°C/W, don haka don ɓata wutar 1.7W, hauhawar zafi daga wurin ɗinki zuwa junction yana kusan 27°C. Tabbatar da zafin yanayi da hauhawar ya kasance ƙasa da 115°C.

8.6 Kariyar ESD

LED yana da ƙarfin jurewa ESD na 2000V (HBM). Duk da haka, kariyar ESD yayin mu'amala da taro yana da mahimmanci. Yi amfani da tashoshin aiki na ƙasa, igiyoyin hannu masu hana tsayawa, da marufi na gudanarwa.

9. Shawarar Amfani

LED infrared 850nm yana da kyau don kyamarori na tsaro, haskakawar gani na dare, da haskakawar gani na inji. Don ingantaccen aiki, ƙira mai sarrafa ci gaba mai iya daidaita haske ta hanyar PWM. Yi amfani da dabarun shawo kan zafi kamar hanyoyin zafi da jini na jan ƙarfe akan PCB. Kusurwar gani na 90° ya dace da haskakawar yanki mai faɗi; don ƙaramin haske, ana iya amfani da kayan gani na waje. Tabbatar cewa fitarwar igiyar ruwa ta LED ta dace da mafi kyawun amsawar firikwensin kyamara (yawanci kusan 850nm ga firikwensin silicon).

10. Gwajin Aminci

10.1 Abubuwan Gwaji da Yanayi

Samfurin ya yi gwajin aminci bisa ga ka'idodin JEDEC, wanda ya haɗa da: Reflow (260°C, 10s, sau 3), Temperature Cycle (-40°C zuwa 100°C, cycles 100), Thermal Shock (-40°C zuwa 100°C, cycles 300), High Temperature Storage (100°C, 1000hrs), Low Temperature Storage (-40°C, 1000hrs), Life Test (25°C, 1000mA, 1000hrs), da High Temperature High Humidity Life Test (85°C/85%RH, 1000mA, 1000hrs). Dukkan gwaje-gwaje sun wuce tare da ma'aunin karɓa na 0 gazawa a cikin samfurori 10.

10.2 Ma'aunin Gazawa

Gazawa an ayyana shi: Ƙarfin gaba ya wuce matsakaicin iyakar bayani (U.S.L) x 1.1; Gudanarwar baya ya wuce U.S.L x 2.0; Jimlar hasken radiant ya faɗi ƙasa da matsakaicin iyakar bayani (L.S.L) x 0.7.

11. Ka'idar Aiki

Wannan LED infrared ya dogara ne akan p-n junction na semiconductor wanda aka yi da gallium arsenide (GaAs) ko wasu mahadi na III-V. Lokacin da aka shigar da shi gaba, electrons suna sake haɗuwa da ramuka a cikin yanki mai aiki, suna sakin makamashi a cikin nau'in photons. Makamashin bandgap yana ƙayyade tsayin igiyar ruwa na photon; don 850nm, kayan yawanci GaAs ne tare da ɗan aluminum. EMC package yana rufe chip kuma yana ba da shawo kan zafi da kariya.

12. Hanyoyin Ci Gaba

Bukatar LEDs infrared na ci gaba da girma tare da faɗaɗa tsarin sa ido, motoci masu cin gashin kansu (LiDAR), da automation masana'antu. Abubuwan da ke gaba sun haɗa da mafi girman ƙarfin wuta, ƙananan packages, da ingantaccen inganci. Haɗin IR LEDs tare da manyan masu sarrafawa da tsarin sarrafawa na hankali zai ba da damar haskakawar daidaitacce. Hakanan, motsi zuwa tsayin igiyar ruwa mafi tsayi (940nm) don haskakawar ɓoye yana ƙaruwa, amma 850nm ya kasance mai rinjaye don kyamarori na yau da kullun saboda mafi kyawun amsawar firikwensin.

13. Tambayoyin da Aka Yi Yawa

Tambaya: Menene matsakaicin gudanarwar gaba na ci gaba? Amsa: Matsakaicin matsaya shine 1000mA, amma kawai don aiki na bugun jini (1/10 na aiki). Don aiki na ci gaba na DC, dole ne a rage gudanarwa bisa ga zafin. A 25°C yanayi tare da kyakkyawan shawo kan zafi, gudanarwar ci gaba na yau da kullun yana kusan 500mA don kiyaye zafin junction lafiya.

Tambaya: Yaya zan yi mu'amala da abubuwan MSL Level 3? Amsa: Ajiye a cikin jakar rigakafin damshi da aka rufe. Bayan buɗewa, yi amfani da shi cikin sa'o'i 168 ko gasa a 60°C na sa'o'i 24 kafin reflow.

Tambaya: Zan iya amfani da wannan LED a cikin kyamarorin waje? Amsa: E, amma tabbatar da cewa kewayon zafin aiki yana cikin -40°C zuwa +85°C kuma rufin yana ba da isasshen sarrafa zafi.

Tambaya: Menene mai sarrafa LED da ake ba da shawara? Amsa: Mai sarrafa ci gaba tare da ƙimar gudanarwa bisa ga zanen zafi. Misali, idan kuna tuki a 700mA, mai sarrafa 1.5W na iya isa.

14. Misalan Aikace-aikace

Misali na 1: Hasken dare na Kyamara Bullet - An yi amfani da layin LED 3x3 a cikin kyamara bullet, yana ba da haske mai inganci har zuwa mita 30. Kusurwar haske na 90° yana rufe filin gani na kyamara. Zanen zafi yana amfani da PCB mai tsakiya na aluminum don ɓata zafi.

Misali na 2: Binciken Gani na Inji - A masana'anta, kyamara mai layi na lissafi yana amfani da layin IR LED mai ƙarfi (12 LEDs) don haskaka sassan masu motsi. Aiki na bugun jini a 500mA, 50% na aiki yana tabbatar da haske mai daidaituwa ba tare da yawan zafi ba.