Takardar Bayanin Fasaha na SMD3528 LED Kori Single Chip - Girman 3.5x2.8mm - Ƙarfin Lantarki 3.2V - Ƙarfin Wutar Lantarki 0.108W

1. Bayyani Game da Samfurin

SMD3528 na'urar haɗawa ta saman (SMD) ce ta fitilar LED wacce ke da tushen haske kori guda ɗaya a cikin daidaitaccen ma'auni na marufi 3528. An ƙera wannan LED don hasken nuni na gabaɗaya, aikace-aikacen hasken baya, da hasken kayan ado inda ake buƙatar daidaitaccen fitarwa mai launin kori da aiki mai dogaro. Ƙananan girman sa da ƙirar haɗawa ta saman sun sa ya dace da hanyoyin haɗawa ta atomatik akan allunan da'ira (PCBs).

2. Fassarar Ma'ana Mai Zurfi na Ma'auni na Fasaha

2.1 Halaye na Haske da Lantarki

An ayyana ainihin aikin LED a ƙarƙashin daidaitattun yanayin gwaji (T_s=25°C). Matsakaicin ƙarfin lantarki na gaba (V_F) shine 3.2V a ƙarfin lantarki na 20mA, tare da matsakaicin ƙimar da aka yarda na 3.6V. Wannan ma'auni yana da mahimmanci don ƙirar da'irar iyakance ƙarfin lantarki. Tsawon raƙuman haske (λ_d) an ƙayyade shi a 525nm, yana ayyana wurin launinsa na kori. Na'urar tana nuna faɗin kusurwar kallo na digiri 120 (2θ_1/2), yana ba da tsarin fitarwa mai faɗi wanda ya dace da hasken yanki.

2.2 Matsakaicin Matsakaici na Cikakke da Halayen Zafi

Don tabbatar da dogaro na dogon lokaci, dole ne a yi amfani da na'urar ba tare da wuce matsakaicin iyakokin ta ba. Matsakaicin ci gaba da ƙarfin lantarki na gaba (I_F) shine 30mA. Ana iya yarda da mafi girman ƙarfin lantarki na bugun jini (I_FP) na 60mA a ƙarƙashin takamaiman sharuɗɗa (faɗin bugun ≤10ms, zagayowar aiki ≤1/10). Matsakaicin ɓarnawar wutar lantarki (P_D) shine 108mW. Dole ne zafin haɗin gwiwa (T_j) kada ya wuce 125°C. Kewayon yanayin yanayin aiki daga -40°C zuwa +80°C ne, tare da daidaitaccen kewayon zafin ajiya. Don solder, an ƙayyade bayanin reflow tare da matsakaicin zafin jiki na ko dai 200°C ko 230°C na matsakaicin dakika 10.

3. Bayanin Tsarin Binning

An rarraba samfurin zuwa kwandon shara don tabbatar da daidaiton launi da haske a cikin aikace-aikace. Tsarin binning ya ƙunshi ma'auni guda uku masu mahimmanci: ƙarfin haske, tsawon raƙuman haske, da ƙarfin lantarki na gaba.

3.1 Binning na Ƙarfin Haske

Ƙarfin haske, wanda aka auna a cikin lumens (lm) a 20mA, an rarraba shi zuwa kwandon shara da yawa (misali, A2, A3, B1, B2, B3, C1, C2). Kowane kwandon shara yana ƙayyade mafi ƙarancin ƙima da ƙima ta al'ada. Misali, kwandon shara B1 yana da mafi ƙarancin 1.5 lm da ƙimar al'ada na 2.0 lm. Iyakacin ma'auni shine ±7%.

3.2 Binning na Tsawon Raƙuman Haske

An rarraba tsawon raƙuman haske domin sarrafa daidaitaccen inuwar kori. An ayyana kwandon shara kamar G5 (519-522.5nm), G6 (522.5-526nm), da G7 (526-530nm). Wannan yana ba masu ƙira damar zaɓar LED tare da takamaiman ma'auni na launi.

3.3 Binning na Ƙarfin Lantarki na Gaba

Ƙarfin lantarki na gaba (V_F) an rarraba shi don taimakawa wajen ƙirar da'ira don aikace-aikacen da ke motsa ƙarfin lantarki ko don daidaita LED a cikin jerin igiyoyi. Kwandon shara sune: Lamba 1 (2.8-3.0V), Lamba 2 (3.0-3.2V), Lamba 3 (3.2-3.4V), da Lamba 4 (3.4-3.6V), tare da iyakacin ma'auni na ±0.08V.

4. Bincike na Lankwasa Ayyuka

4.1 Lankwasa Halayen IV

Dangantakar tsakanin ƙarfin lantarki na gaba (V_F) da ƙarfin lantarki na gaba (I_F) ba ta layi daya ba, kamar yadda diode ke saba. Lankwasa tana nuna cewa ƙaramin ƙari a cikin ƙarfin lantarki bayan wurin kunna yana haifar da saurin ƙaruwa a cikin ƙarfin lantarki. Wannan yana jaddada mahimmancin amfani da direban ƙarfin lantarki na dindindin maimakon tushen ƙarfin lantarki na dindindin don hana guduwar zafi da tabbatar da fitar da haske mai ƙarfi.

4.2 Ƙarfin Haske Dangane da ƙarfin Lantarki

Fitar da haske yana ƙaruwa tare da ƙarfin lantarki amma ba a layi daya ba. A manyan ƙarfin lantarki, yawanci yawan aiki yana raguwa saboda ƙaruwar tasirin zafi da sauran halayen semiconductor marasa kyau. Yin amfani da LED sosai sama da shawarar 20mA na iya haifar da raguwar dawowa a cikin haske yayin da yake rage tsawon rayuwa sosai.

3.3 Halayen Bakan Haske da Zafi

Lankwasar rarraba ƙarfin bakan dangi tana nuna yadda ake rarraba fitar da haske a tsawon raƙuman haske. Lankwasa don wannan LED kori tana kololuwa kusan 525nm. Hoton da ke nuna ƙarfin bakan dangi daidai da zafin haɗin gwiwa yana nuna cewa bakan fitarwa da ƙarfi na iya canzawa tare da zafin jiki. Yayin da zafin haɗin gwiwa ya tashi daga 25°C zuwa 125°C, ƙarfin bakan dangi gabaɗaya yana raguwa, wanda shine abin da ake la'akari da shi na sarrafa zafi a cikin aikace-aikacen da ke da ƙarfi ko cunkoso.

5. Bayanin Injiniya da Marufi

5.1 Girman Jiki da Zanen Bayyani

LED ya yi daidai da daidaitaccen marufin SMD 3528, tare da daidaitattun girma na 3.5mm a tsayi da 2.8mm a faɗi. Cikakken zanen girma yana ba da iyakacin iyakoki masu mahimmanci: girma da aka ƙayyade zuwa wuri guda na goma (misali, .X) yana da iyakacin ±0.10mm, yayin da waɗanda aka ƙayyade zuwa wurare biyu na goma (.XX) suna da ƙaramin iyakacin ±0.05mm. An kuma ayyana tsayin marufi a cikin zanen.

5.2 Tsarin Gado da aka Shawarta da Ƙirar Stencil

An ba da shawarar tsarin ƙasa (sawun ƙafa) don ƙirar PCB don tabbatar da ingantaccen solder da kwanciyar hankali na injiniya. An kuma ba da shawarar ƙirar stencil daidai don aikace-aikacen man guduro. Bin waɗannan shawarwari yana taimakawa wajen cimma haɗin gwiwar solder mai dogaro, daidaitaccen daidaitawa, da kuma fitar da zafi mai inganci daga gado na zafi na LED (idan akwai).

5.3 Gano Polarity

Yawanci ana yiwa alama cathode akan na'urar, sau da yawa ta hanyar digo kori, tsaga a cikin marufi, ko kusurwa mai chamfered. Zanen tsarin gado yana nuna filayen anode da cathode a sarari. Daidaitaccen polarity yana da mahimmanci don aikin na'urar.

6. Jagororin Solder da Haɗawa

6.1 Ma'auni na Solder Reflow

LED ya dace da daidaitattun hanyoyin solder reflow na infrared ko convection. An ƙayyade matsakaicin zafin jiki na solder da aka yarda a matsayin 200°C ko 230°C a jikin marufi, tare da matsakaicin lokacin bayyanawa na dakika 10 sama da zafin jiki na ruwa. Yana da mahimmanci a bi bayanin martaba wanda ke dumama isasshe don rage girgizar zafi, yana ba da damar aiki da kuzari mai kyau da kuma jika solder, kuma yana sanyaya a ƙimar da aka sarrafa.

6.2 Kula da Sarrafawa da Ajiya

LED suna da hankali ga zubar da wutar lantarki (ESD). Yakamata a sarrafa su a cikin yanayin da aka kare ESD ta amfani da igiyoyin wuyan da aka kafa da kuma tabarmi masu ɗaukar wutar lantarki. Yakamata a adana na'urorin a cikin jakunkun shinge na danshi na asali tare da desiccant, a cikin yanayi da ba su wuce ƙayyadaddun zafin ajiya da kewayon zafi ba. Bayyanawa ga babban danshi na iya buƙatar gasa kafin reflow don hana "popcorning" (fashewar marufi saboda saurin faɗaɗawar tururi).

7. Bayanin Marufi da Oda

7.1 Ƙayyadaddun Marufin Kaset da Reel

Ana ba da LED akan kaset ɗin mai ɗaukar hoto da aka yi wa ado akan reels, wanda ya dace da injunan zaɓi da wuri na atomatik. An ba da cikakkun girma don aljihun kaset ɗin mai ɗaukar hoto, kaset ɗin rufewa, da reel. An ƙayyade ƙarfin bawon murfin ya kasance tsakanin 0.1N da 0.7N lokacin da aka cire shi a kusurwar digiri 10, yana tabbatar da cewa yana riƙe da kayan yayin jigilar kaya amma yana saki cikin sauƙi yayin haɗawa.

7.2 Dokar Lambar Samfurin Samfur

Cikakken tsarin lambobi na lambobi yana ayyana samfurin samfurin. Tsarin lambar ya haɗa da filayen don: bayyani na marufi (misali, '32' don 3528), lambar guntu ('S' don guntu ɗaya mai ƙaramin ƙarfi), lambar ruwan tabarau/optic ('00' don babu ruwan tabarau, '01' tare da ruwan tabarau), lambar launi ('G' don kori), lambar ciki, da lambar kwandon shara na ƙarfin haske. Wannan yana ba da damar yin oda daidai na takamaiman haɗin halaye.

8. Shawarwari na Aikace-aikace

8.1 Yanayin Aikace-aikace na Al'ada

Wannan LED ya dace da aikace-aikace iri-iri ciki har da alamomin matsayi akan kayan lantarki na mabukaci da kayan aikin masana'antu, hasken baya don nuni na LCD da maɓallan maɓalli, hasken kayan ado a cikin alamar alama da kayan gine-gine, da hasken harafin tashoshi. Faɗin kusurwar kallonsa yana sa ya yi kyau don hasken yanki inda ake buƙatar tushen haske mai watsewa.

8.2 Abubuwan da ake la'akari da su na Ƙira

Iyakance Ƙarfin Lantarki:Koyaushe yi amfani da resistor mai iyakance ƙarfin lantarki a jere ko, zai fi dacewa, da'irar direban ƙarfin lantarki na dindindin. Lissafa ƙimar resistor dangane da ƙarfin wutar lantarki (V_wadata), ƙarfin lantarki na gaba na LED (V_Fdaga kwandon shara), da ƙarfin lantarki da ake so (I_F, yawanci 20mA). Formula: R = (V_wadata- V_F) / I_F.
Gudanar da Zafi:Duk da yake wannan na'urar ce mai ƙaramin ƙarfi, ingantaccen shimfidar PCB yana da mahimmanci. Tabbatar da isasshen yanki na tagulla da aka haɗa zuwa gado na zafi (idan ya dace) don fitar da zafi, musamman lokacin aiki a ko kusa da matsakaicin ƙima ko a cikin yanayin zafi mai girma.
Ƙirar Gani:Yi la'akari da kusurwar kallo na digiri 120. Don haskoki masu mai da hankali, ƙila ana buƙatar na'urori na gani na biyu (ruwan tabarau). Yakamata a daidaita binning don tsawon raƙuman haske da ƙarfin haske a cikin samfur ɗaya don daidaitaccen bayyanar.

9. Ƙa'idodin Dogaro da Inganci

9.1 Ƙa'idodin Gwajin Dogaro

Samfurin yana fuskantar gwaji mai tsauri na dogaro dangane da ƙa'idodin masana'antu (JESD22, MIL-STD-202G). Manyan gwaje-gwaje sun haɗa da:
Gwaje-gwajen Rayuwar Aiki:An gudanar da shi a zafin daki, babban zafi (85°C), da ƙananan zafi (-40°C) na sa'o'i 1008 kowanne a ƙarƙashin matsakaicin ƙarfin lantarki.
Gwaje-gwajen Muhalli:Babban Danshi Babban Zafi Aiki Rayuwa (HHHTOHL) a 60°C/90% RH, da zagayowar zafi tare da danshi.
Girgizar Zafi:Zagayowar tsakanin -40°C da 125°C.

9.2 Ma'auni na Kasawa

Ana ɗaukar gwaji a matsayin gazawa idan kowane samfurin ya nuna: motsi na ƙarfin lantarki na gaba >200mV; lalacewar ƙarfin haske >15% don LED na tushen InGaN (wanda ya haɗa da wannan LED kori); ƙarfin lantarki na baya >10μA; ko gazawa mai tsanani (buɗe ko gajeriyar da'ira). Waɗannan ƙa'idodi masu tsauri suna tabbatar da babban matakin ƙarfin samfur.

10. Kwatancen Fasaha da Bambanci

Idan aka kwatanta da tsofaffin LED kori na rami, SMD3528 yana ba da fa'idodi masu mahimmanci a cikin girman, dacewa don haɗawa ta atomatik, kuma yawanci mafi kyawun aikin zafi saboda PCB yana aiki azaman mai sanyaya zafi. A cikin nau'in SMD3528, an bambanta wannan takamaiman samfurin ta hanyar cikakken tsarin binning don ƙarfin haske, tsawon raƙuman haske, da ƙarfin lantarki, yana ba da damar daidaita aiki mai ƙarfi a cikin aikace-aikace masu mahimmanci. Faɗin kusurwar kallonsa na digiri 120 na iya zama fa'ida akan LED masu ƙunƙuntaccen kusurwa don wasu aikace-aikace amma rashin lahani ga wasu da ke buƙatar haske mai mai da hankali.

11. Tambayoyin da ake yawan yi (Dangane da Ma'auni na Fasaha)

Q: Zan iya tuka wannan LED kai tsaye daga wadataccen wutar lantarki 5V?
A: A'a. Dole ne ka yi amfani da resistor mai iyakance ƙarfin lantarki. Misali, tare da wadataccen wutar lantarki 5V da matsakaicin V_Fna 3.2V a 20mA, resistor da ake buƙata shine (5V - 3.2V) / 0.02A = 90 Ohms. Yi amfani da ƙimar daidaitaccen da ke gaba (misali, 91 Ohms).
Q: Menene bambanci tsakanin kwandon shara G5, G6, da G7?
A: Suna wakiltar kewayon tsawon raƙuman haske daban-daban. G5 shine mafi guntun tsawon raƙuman haske (kori mai shuɗi, ~520nm), G7 shine mafi tsayi (kori mai rawaya, ~528nm), kuma G6 yana tsakanin. Zaɓi dangane da wurin launi da ake so.
Q: Har yaushe wannan LED zai wanzu?
A> Tsawon rayuwar LED yawanci ana ayyana shi azaman lokacin da fitar da haske ya lalace zuwa wani kaso (misali, 70% ko 50%) na ƙimarsa ta farko. Duk da yake ba a bayyana shi a fili a nan ba, gwajin dogaro mai tsauri (sau 1008+ a ƙarƙashin matsin lamba) yana nuna tsawon rayuwar aiki lokacin da aka yi amfani da shi cikin ƙayyadaddun bayanai, musamman tare da ingantaccen sarrafa zafi.
Q: Ana buƙatar ruwan tabarau?
A: Daidaitaccen samfurin ba shi da ruwan tabarau na ciki (lamba '00'), yana ba da tsarin fitarwa na Lambertian. Za a yi amfani da ruwan tabarau (lamba '01') don daidaitawa ko kuma siffanta hasken don takamaiman aikace-aikace.

12. Nazarin Ƙira da Amfani

Yanayi: Ƙirar Panel na Alamar Matsayi:Samfurin yana buƙatar alamomin matsayi na kori goma iri ɗaya.Matakan Ƙira:1. Zaɓi duk LED daga kwandon shara ɗaya na ƙarfin haske (misali, B2) da kwandon shara na tsawon raƙuman haske (misali, G6) don tabbatar da haske iri ɗaya da launi. 2. Ƙira PCB tare da shimfidar gado da aka shawarta. 3. Don layin wadata na 12V, lissafa resistor mai iyakance ƙarfin lantarki. Yin amfani da matsakaicin V_Fdaga kwandon shara 4 (3.6V) don aminci: R = (12V - 3.6V) / 0.02A = 420 Ohms. Resistor na 430 Ohm zai dace. 4. Tabbatar cewa PCB tana da isasshen zubar da tagulla don fitar da zafi, saboda duk LED goma za su taru. 5. Ƙayyade ainihin lambar sashi ciki har da duk lambobin kwandon shara ga mai ba da kaya don tabbatar da daidaito.

13. Gabatarwa da Ka'idar Aiki

Ana samar da haske ta hanyar aikin da ake kira electroluminescence. Guntun LED diode ne na semiconductor tare da haɗin gwiwar p-n da aka yi daga kayan indium gallium nitride (InGaN) waɗanda aka ƙera musamman don fitar da hasken kori. Lokacin da aka yi amfani da ƙarfin lantarki na gaba, electrons daga yankin n-type da ramuka daga yankin p-type ana shigar da su cikin yankin aiki (haɗin gwiwa). Lokacin da electron ya sake haɗuwa da rami, yana sakin makamashi a cikin nau'in photon (ɓangaren haske). Takamaiman tazarar band na kayan InGaN yana ƙayyade tsawon raƙuman haske (launi) na photon da aka fitar, wanda a wannan yanayin kori ne (~525nm). Epoxy ko silicone encapsulant yana kare guntu kuma sau da yawa yana aiki azaman ruwan tabarau na farko.

14. Trends da Ci gaban Fasaha

Gabaɗayan yanayin a cikin SMD LED kamar 3528 yana zuwa ga ingantacciyar inganci (ƙarin lumens a kowace watt), wanda ke ba da damar ko dai fitarwa mai haske a cikin wutar lantarki iri ɗaya ko haske iri ɗaya tare da ƙarancin amfani da wutar lantarki da ƙarancin zafi. Hakanan akwai ci gaba mai ci gaba a cikin daidaiton launi da kwanciyar hankali akan lokaci da zafin jiki. Duk da yake wannan girman marufi ne mai girma, kayan semiconductor na asali da hanyoyin masana'antu ana gyara su koyaushe. Musamman ga LED kori, cimma ingantacciyar inganci da cikakkiyar jikewa na launi ya kasance ƙalubale na tarihi, amma ci gaban kimiyyar kayan yana ci gaba da tura iyakokin aiki.