LED mai haske shuɗi PLCC-2 2.8x3.5x0.8mm - Gwargwadon ƙarfin wutar lantarki 3.2V - Iko 228mW - Tsawon igiyar ruwa 469nm

1. Bayanin Samfurin

Wannan LED shuɗi yana da kunshe karamar PLCC-2 mai girman 2.8mm x 3.5mm x 0.8mm. An tsara shi don haɗawa da fasahar Surface Mount (SMT) kuma yana ba da kusurwar kallo mai fadi sosai na digiri 120. LED yana dogara ne akan fasahar semiconductor InGaN (Indium Gallium Nitride) kuma yana fitar da haske shuɗi tare da tsawon igiyar ruwa mai rinjaye na 469nm. Ya dace da aikace-aikace daban-daban ciki har da alamomin gani, nunin cikin gida, hasken shimfidar wuri, bel na fitila, da hasken gabaɗaya. Na'urar tana da yarda da RoHS kuma tana da matakin hankali na danshi na 3. Ana ba da ita a cikin kaset da reel packaging tare da raka'a 4000 a kowace reel.

2. Fassarar Ma'aunin Fasaha

2.1 Halayen Gani

Ana ba da aikin gani a yanayin gwaji na IF=60mA da Ts=25°C. Tsawon igiyar ruwa mai rinjaye (Wld) yana samuwa a cikin bins da dama: D10 (465.0-467.5nm), D20 (467.5-470.0nm), E10 (470.0-472.5nm), da E20 (472.5-475.0nm). Matsakaicin tsawon igiyar ruwa shine 469.1nm. An raba haske mai gudana (Φ) a matsayin WGD (4.00-4.96 lm), WGE (5.00-6.00 lm), da WHA (6.00 lm da sama, babu iyaka na al'ada amma ana sa ran sama). Kusurwar kallo (2Θ1/2) shine digiri 120, yana ba da faɗi mai yawa.

2.2 Halayen Lantarki

Gwargwadon ƙarfin wutar lantarki (Vf) a 60mA yana daga 2.8V zuwa 3.5V dangane da lambar bin. Bins sun haɗa da G1 (2.8-2.9V), G2 (2.9-3.0V), V (3.0-3.2V), I1 (3.2-3.3V), I2 (3.3-3.4V), da J1 (3.4-3.5V). Matsakaicin gwargwadon ƙarfin wutar lantarki shine 3.2V. Juyawar halin yanzu (IR) a VR=5V kasa da 10μA. Matsakaicin matsayi sun haɗa da tarwatsa iko (Pd) na 228mW, halin yanzu na gaba (IF) na 65mA, halin yanzu na gaba mafi girma (IFP) na 120mA (1/10 duty cycle, 0.1ms pulse width), juyar da wutar lantarki (VR) na 5V, da ESD (HBM) na 2000V.

2.3 Halayen Zafi

Juriyar zafi daga junction zuwa wurin soldering (Rth(j-s)) shine 85°C/W. Wannan siga yana da mahimmanci don sarrafa zafi don tabbatar da cewa zafin junction (Tj) bai wuce matsakaicin matsayi na 100°C ba. Matsakaicin zafin aiki shine -40°C zuwa +85°C, kuma matsakaicin zafin ajiya shine -40°C zuwa +100°C. Ana buƙatar ɗaukar zafi mai kyau lokacin aiki a manyan halin yanzu.

3. Tsarin Rarraba

An rarraba LED zuwa bins don gwargwadon ƙarfin wutar lantarki, tsawon igiyar ruwa, da haske mai gudana. Bins na wutar lantarki suna ba da damar sarrafa ƙirar kewayawa mai tsauri. Bins na tsawon igiyar ruwa suna tabbatar da daidaiton launi don aikace-aikacen da ke buƙatar fitowar shuɗi iri ɗaya. Bins na haske mai gudana suna taimakawa zaɓar LEDs masu takamaiman matakan haske. Tsarin rarraba yana da mahimmanci ga masana'anta don daidaita LEDs a cikin tsararru ko tsarin hasken baya.

4. Nazarin Yanayin Aiki

Ana ba da halayen lantarki na gani na al'ada a cikin yanayu da dama. Hoto na 1 yana nuna gwargwadon ƙarfin wutar lantarki vs. halin yanzu na gaba, yana nuna alakar da ba ta kai tsaye ba ta al'ada ta LEDs. Hoto na 2 yana kwatanta ƙarfin haske vs. halin yanzu na gaba, yana nuna karuwar fitowar haske tare da halin yanzu. Hotuna 3 da 4 suna nuna tasirin zafin fil na dangi na haske da tsawon igiyar ruwa, bi da bi; yayin da zafi ya tashi, haske yana raguwa kuma tsawon igiyar ruwa yana canzawa kadan (canji ja). Hoto na 5 yana nuna gwargwadon ƙarfin wutar lantarki vs. zafin fil, yana nuna alamar zafi mara kyau. Hoto na 6 yana nuna matsakaicin halin yanzu na gaba vs. zafin fil don aiki mai aminci. Hoto na 7 shine rarraba bakan, yana kaiwa kusan 469nm tare da cikakken nisa a rabin mafi girma na kusan 25-30nm.

5. Bayanin Injiniya da Tattarawa

Kunshe LED yana da girma 2.8mm (tsawo) x 3.5mm (faɗi) x 0.8mm (tsayi). An yi alamar polarity a kan kunshe. An bayar da tsarin soldering da aka ba da shawara a cikin zane don tabbatar da haɗin zafi da injiniya mai kyau. Cathode yawanci ƙaramin pad ne tare da anode. Duk ma'auni suna cikin millimita tare da haƙuri na ±0.2mm sai dai in an lura da hakan.

6. Jagororin Gyaran Wutar Lantarki da Haɗawa

Don reflow soldering, an haɗa da bayanin martaba da aka ba da shawara: hawan hawa ≤3°C/s, preheat daga 150°C zuwa 200°C na daƙiƙa 60-120, lokaci sama da 217°C (TL) har zuwa daƙiƙa 60, matsakaicin zafin jiki (Tp) na 260°C har zuwa daƙiƙa 10, da saurin sanyaya ≤6°C/s. Jimlar lokaci daga 25°C zuwa matsakaicin zafin jiki kada ya wuce mintuna 8. Kada a yi reflow soldering fiye da sau biyu; idan fiye da sa'o'i 24 sun wuce tsakanin ayyukan soldering, ana iya lalata LEDs saboda shan danshi. Don soldering da hannu, yi amfani da ƙarfen soldering a ≤300°C na kasa da daƙiƙa 3 a kowace haɗi, kuma sau ɗaya kawai. An hana gyara; idan ya zama dole, yi amfani da ƙarfen soldering mai kai biyu. Kayan rufewar shine silicone, mai laushi; a guji matsa lamba mai yawa a saman saman. Kada a saka akan PCB da aka lanƙwasa ko lankwasa allon bayan soldering. A guji sanyaya da sauri da matsin lamba na injiniya yayin sanyaya.

7. Bayanin Tattarawa da Oda

An tattara LEDs a cikin kaset da reel format. An nuna girma na kaset ɗin mai ɗauka a cikin zane, tare da nuna alkiblar ciyarwa da alamar polarity. Girman reel daidai ne. Kowane reel yana ƙunshe da guda 4000. Alamar ta haɗa da lambar sashi, lambar spec, lambar lot, tsawon igiyar ruwa mai rinjaye (WLD), gwargwadon ƙarfin wutar lantarki (VF), yawa (QTY), lambar kwanan wata (DATE), da lambar bin. Tsarin tattarawa mai kariya daga danshi yana amfani da jakunkunan aluminum tare da desiccant. Yanayin ajiya: kafin buɗewa, ajiye a ≤30°C da ≤75% RH har zuwa shekara 1 daga bayarwa. Bayan buɗewa, ajiye a ≤30°C da ≤60% RH har zuwa sa'o'i 24. Idan kayan shan danshi ya ɓace ko lokacin ajiya ya wuce, toya a 60±5°C na > sa'o'i 24.

8. Shawarwarin Aikace-aikace

Wannan LED shuɗi ya dace da amfani a cikin alamomin gani, allon nuni na cikin gida, hasken shimfidar wuri, da bel na fitila. Lokacin tsara kewaya, tabbatar da cewa halin yanzu na gaba bai wuce matsakaicin matsayi (65mA ci gaba) ba kuma haɗa da ƙuntata halin yanzu don hana guduwar zafi. Tsarin zafi yana da mahimmanci; dole ne a kiyaye zafin junction kasa da 100°C don kiyaye aiki da aminci. A guji bayyana ga sulfides (sulfur a cikin kayan haɗin gwiwa yakamata ya zama kasa da 100 ppm), halogens (bromine <900 ppm, chlorine <900 ppm, total <1500 ppm). Motsa abubuwan da ke da ƙwayoyin halitta (VOCs) daga kayan haɗi na iya shiga silicone kuma ya haifar da canza launi; tabbatar da dacewa da kayan. Don tsaftacewa, yi amfani da isopropyl alcohol; ba a ba da shawarar tsaftacewa da ultrasonic ba saboda yana iya lalata LED. Gudanar da LEDs ta gefen ta amfani da tweezers; a guji taɓa lens silicone. Ana buƙatar kariyar ESD yayin sarrafawa da haɗawa.<900 ppm, chlorine<900 ppm, total<1500 ppm). Motsa abubuwan da ke da ƙwayoyin halitta (VOCs) daga kayan haɗi na iya shiga silicone kuma ya haifar da canza launi; tabbatar da dacewa da kayan. Don tsaftacewa, yi amfani da isopropyl alcohol; ba a ba da shawarar tsaftacewa da ultrasonic ba saboda yana iya lalata LED. Gudanar da LEDs ta gefen ta amfani da tweezers; a guji taɓa lens silicone. Ana buƙatar kariyar ESD yayin sarrafawa da haɗawa.

9. Kwatancen Fasaha

Idan aka kwatanta da sauran PLCC-2 blue LEDs a kasuwa, wannan na'urar tana ba da kusurwar kallo mai fadi na 120°, yana sa ya dace da aikace-aikacen da ke buƙatar haske mai faɗi. Juriyar zafi na 85°C/W yana da al'ada ga wannan girman kunshe. Zaɓuɓɓukan binning masu tsauri don tsawon igiyar ruwa da haske mai gudana suna ba da damar daidaita launi da haske. Matsayin halin yanzu na gaba na 65mA yana da gasa, kuma ƙarfin ESD na 2000V yana ba da kariyar ƙarfi. Rufewar silicone yana ba da ingantaccen fitar da haske amma yana buƙatar kulawa da hankali don guje wa lalacewa. Gabaɗaya, wannan LED yana daidaita aiki, aminci, da sauƙin haɗawa don hasken shuɗi na gabaɗaya.

10. Tambayoyin da Aka Yi Yawa

Tambaya: Menene matsakaicin gwargwadon ƙarfin wutar lantarki a 60mA?
Amsa: Matsakaicin gwargwadon ƙarfin wutar lantarki shine 3.2V, amma yana iya kasancewa daga 2.8V zuwa 3.5V dangane da bin.

Tambaya: Ana iya tuka wannan LED a mafi girma halin yanzu?
Amsa: Matsayin halin yanzu na gaba mafi girma shine 65mA. Yin aiki sama da wannan na iya haifar da lalacewa ko rage rayuwa. An yarda da halin yanzu mafi girma na 120mA tare da duty cycle na 1/10 da faɗin bugun jini 0.1ms.

Tambaya: Menene rayuwar shiryayye?
Amsa: Kafin buɗe kunshe mai rufewa, ana iya ajiye LEDs har zuwa shekara 1 a ≤30°C da ≤75% RH. Bayan buɗewa, yi amfani da shi cikin sa'o'i 24 ko toya kafin amfani.

Tambaya: Yaya zan tsaftace LED bayan soldering?
Amsa: Yi amfani da isopropyl alcohol. Kada a yi amfani da tsaftacewa da ultrasonic saboda yana iya lalata kunshe na silicone.

Tambaya: Shin wannan LED ya dace da amfani a waje?
Amsa: Ee, cikin matsakaicin zafin aiki na -40°C zuwa +85°C. Duk da haka, tabbatar da kariya mai dacewa daga danshi da UV, kuma tabbatar da dacewa da yanayin waje.

11. Misalin Aikace-aikace na Amfani

Yi la'akari da allon nuni na cikin gida wanda ke buƙatar hasken baya shuɗi iri ɗaya. Yin amfani da wannan LED tare da tsawon igiyar ruwa mai rinjaye na 469nm da kusurwar kallo na 120°, za a iya gina matrix pitch na 2mm. Tare da zaɓin binning mai kyau (misali, bin tsawon igiyar ruwa D20, bin haske WGE), allon yana samun daidaiton launi a babban haske. Ana saka LEDs ta amfani da reflow soldering tare da yanayi na nitrogen don hana oxidation. Kowane LED ana tuka shi a 50mA don zama a cikin iyakoki masu aminci, kuma PCB tana ɗaukar farantin jan ƙarfe don zubar da zafi. An ƙididdige zafin junction a 85°C a ƙarƙashin yanayin 40°C, yana tabbatar da aminci sama da sa'o'i 50,000 na aiki.

12. Ka'idar Aiki

LED tushen haske ne mai ƙarfi wanda ya dogara akan haɗin p-n. A cikin bias na gaba, electrons suna haɗuwa da ramuka a cikin yanki mai aiki na semiconductor InGaN, suna sakin makamashi a cikin siffar photons. Bandgap makamashi na InGaN yana ƙayyade tsawon igiyar ruwa na haske da aka fitar. Don fitowar shuɗi, ana daidaita adadin indium don cimma tsawon igiyar ruwa mafi girma kusan 469nm. Kunshe PLCC-2 yana amfani da rami mai kyalli da rufewar silicone don fitar da haske yadda ya kamata yayin kare die.

13. Hanyoyin Ci Gaba

Blue LEDs sun ci gaba da sauri, tare da ci gaba a cikin ingancin haske da aminci. Hanyoyin yanzu sun haɗa da mafi girman haske a kowane kunshe, faɗin gamut launi don nuni, da ƙananan juriyar zafi. Kunshe LEDs suna raguwa, amma sarrafa iko yana ƙaruwa. Amfani da phosphors na nesa don samar da haske fari ya kasance na kowa, yana haifar da buƙatar ingantattun blue LEDs. Ci gaba na gaba na iya mayar da hankali kan samun ingantaccen aikin bango, ingantaccen kwanciyar hankali na launi akan zafi, da haɗin kai da tsarin haske mai wayo. Wannan PLCC-2 blue LED yana wakiltar samfur na yau da kullun tare da kyakkyawan aiki don aikace-aikace na gabaɗaya da na musamman.