Bayanin Fasahar LED 1608 Fari - 1.6x0.8x0.4mm - 2.6-3.4V - 68mW

1. Bayanin Samfur

1.1 Bayani Gabaɗaya

An yi wannan LED fari ta amfani da chip shuɗi da phosphor don samar da haske fari. Girman fakitin shine 1.6mm x 0.8mm x 0.4mm, yana sa ya dace da na'urorin lantarki masu ƙanƙanta. An tsara shi don haɗawa ta hanyar SMT kuma ya dace da RoHS.

1.2 Siffofi

• Babban kusurwar gani mai faɗi (digiri 140)
• Ya dace da duk haɗin SMT da aikin tafasa
• Matsayin zafin damshi: Matsayi 3
• Ya dace da RoHS

1.3 Amfani

Alamun gani, maɓallai da alamomi, nuni, da dalilai na haskaka gabaɗaya.

2. Sigogin Fasaha

2.1 Halayen Lantarki da na Gani (Ta=25°C)

Wutar gaba (VF) a IF=5mA an rarraba ta daga 2.6V zuwa 3.4V a matakan da suka ƙunshi bins F1 (2.6-2.7V), F2 (2.7-2.8V), G1 (2.8-2.9V), G2 (2.9-3.0V), H1 (3.0-3.1V), H2 (3.1-3.2V), I1 (3.2-3.3V), I2 (3.3-3.4V). Ƙarfin haske (IV) a IF=5mA yana daga 90 mcd zuwa 250 mcd a cikin bins: 1AP (90-120 mcd), G20 (120-150 mcd), 1AW (150-200 mcd), 1AX (200-250 mcd). Kusurwar gani digiri 140 ne (yawanci). Ruwan baya shine matsakaicin 10 µA a VR=5V. Matsayin zafi daga junction zuwa wurin tafasa (RTHJ-S) shine matsakaicin 450°C/W.

2.2 Matsakaicin Ƙididdiga Masu Ƙayyade

Ba a kamata a wuce iyaka masu zuwa ba: Rarrabawar wuta 68 mW; Ruwan gaba 20 mA; Wutar baya 5 V; Ruwan gaba mafi girma (bugu 0.1ms, 1/10 aiki) 60 mA; Ƙarfin wutar lantarki na tsaye (HBM) 1000 V; Zafin aiki -40 zuwa +85°C; Zafin ajiya -40 zuwa +85°C; Zafin junction 95°C. Dole ne a kula don tabbatar da cewa zafin junction bai wuce wannan ƙididdiga ba.

3. Tsarin Rarraba

Ana rarraba LED ɗin zuwa bins bisa ga chromaticity (CIE 1931 coordinates) da ƙarfin haske. An ayyana bins na chromaticity a cikin zanen CIE tare da haɗin kai don bins B01-B06 da K01-K06. Waɗannan bins suna rufe fari mai sanyi zuwa fari tsaka-tsaki. Bins na ƙarfin haske an bayyana su a Sashe na 2.1. Hakanan an samar da bins na wutar gaba don sauƙaƙe tsarin da'ira. Lambar bin da ke kan lakabin tana ayyana abin da yake VF, chromaticity, da matsayi na haske na na'urar.

4. Nazarin Halayen Aiki

4.1 Wutar Gaba da Ruwan Gaba

Taswirar VF-IF ta yau da kullun tana nuna halayen ƙaruwa: a ƙananan ruwa, wutar tana tashi da sauri, sannan ta zama madaidaiciya. A 5 mA na yau da kullun, VF yawanci yana cikin kewayon 2.8-3.2 V dangane da bin. A 20 mA, VF yana ƙaruwa da kusan 0.2-0.3 V.

4.2 Ruwan Gaba da Ƙarfin Haske

Ƙarfin haske yana ƙaruwa kusan daidai da ruwa daga 0 zuwa 20 mA. A 5 mA, fitowar tana kusan kashi 25% na mafi girma (20 mA). Wannan taswirar tana taimakawa wajen zaɓar ruwan tuƙi don hasken da ake so.

4.3 Tasirin Zafi

Ƙarfin haske yana raguwa tare da ƙaruwar zafin yanayi. A 100°C, hasken yana faɗuwa zuwa kusan 85% na darajarsa a 25°C. Dole ne a rage ruwan gaba a yanayin zafi mai girma don guje wa zafi. Taswirar Zafin Fil da Ruwan Gaba tana nuna cewa a 100°C, ruwan gaba da aka yarda yana raguwa zuwa kusan 15 mA.

4.4 Bakan da Tsarin Haskawa

Rarraba bakan yana nuna kololuwar shuɗi a kusan 450 nm daga chip LED da kuma fitowar rawaya mai faɗi daga phosphor, yana haifar da haske fari. Zafin launi mai alaƙa (CCT) yana daidai da fari tsaka-tsaki. Tsarin haskawa yana kama da lambertian tare da kusurwar gani mai faɗi 140°, yana ba da rarraba haske daidai.

5. Bayani na Injiniya da Tattara

5.1 Girman Fakitin

Fakitin LED yana auna 1.6 mm × 0.8 mm × 0.4 mm tare da haƙurin ±0.2 mm. Duban sama yana nuna yankin fitar haske, duban ƙasa yana nuna pads na lantarki, kuma duban gefe yana nuna siririyar siffa. Ana nuna polarity ta alama a kan duban sama. Tsarin pad na tafasa da aka ba da shawara shine 2.4 mm × 0.8 mm ga kowane pad, tare da tazara na 0.8 mm, kamar yadda aka nuna a Hoto 1-5.

5.2 Girman Tef ɗin Dako da Rili

Tef ɗin dako yana da faɗi 8 mm tare da farfajiyar aljihu na 4 mm. Rili yana da diamita na waje 178 ±1 mm, diamita na cibiya 60 ±1 mm, da faɗi 13.0 ±0.5 mm. Kowace rili tana ƙunshe da guda 4,000 na LEDs.

5.3 Bayanin Lakabi

Kowace rili an lakanta ta da lambar sashi, lambar ƙayyadaddun bayanai, lambar lot, lambar bin (gami da lambar haske, bin chromaticity, bin VF, lambar tsawon raƙuman haske), adadi, da lambar kwanan wata.

6. Jagororin Tafasa da Haɗawa

6.1 Tsarin Tafasa Reflow

Tsarin reflow da aka ba da shawara yana bi ka'idodin JEDEC. Gabaɗaya daga 150°C zuwa 200°C na daƙiƙa 60-120. Matsakaicin haɓaka bai kamata ya wuce 3°C/s ba. Lokacin sama da 217°C (liquidus) shine daƙiƙa 60-150. Mafi girman zafin jiki shine 260°C tare da mafi girman lokacin zama na daƙiƙa 10 (a cikin 5°C na mafi girma). Matsakaicin sanyaya ya kamata ya zama ≤6°C/s. Jimlar lokaci daga 25°C zuwa mafi girma shine mafi ƙarancin minti 8. Kada a yi tafasa reflow fiye da sau biyu.

6.2 Tafasa da Gyaran Hannu

Idan tafasa hannu ya zama dole, yi amfani da ƙarfe mai tafasa a ≤300°C na ƙasa da daƙiƙa 3 a kowane pad. Ana ba da izinin aikin tafasa hannu sau ɗaya kawai. Ba a ba da shawarar gyara bayan reflow ba; idan ya zama dole, yi amfani da ƙarfe mai tafasa mai kai biyu kuma a share aikin.

6.3 Tsare-tsare

Ka guji hawa a kan PCB da aka lankwasa; kar a yi amfani da matsi na injiniya ko girgiza yayin sanyaya; kar a sanyaya da sauri bayan tafasa.

7. Bayani game da Tattara da oda

Ana tattara LEDs a cikin jakunkuna masu hana damshi tare da bushewa da mai nuna zafi. Yanayin ajiya kafin buɗewa: ≤30°C, ≤75% RH, yana aiki cikin shekara 1 daga kwanan watan tattara. Bayan buɗewa: ≤30°C, ≤60% RH, dole ne a yi amfani da shi cikin awa 24. Idan lokacin ajiya ya wuce ko kuma bushewar ta canza launi, gasa LEDs a 60±5°C na akalla awa 24 kafin amfani. Tattaran waje shine akwatin kwali na yau da kullun wanda ya dace da jigilar kaya.

8. Shawarwari na Amfani

Saboda ƙananan girmansa, wannan LED ya dace da shimfidar PCB mai cike da yawa. Yi amfani da masu iyakance ruwa don tabbatar da cewa ruwan gaba bai wuce 20 mA ba. Yi la'akari da tsarin zafi: LED ya kamata a sa shi tare da isasshen yanki na jan karfe don taimakawa watsa zafi. Ka guji fallasa LED ga mahallin da ke ɗauke da sulfur (>100 ppm) ko mahadi masu halogen (Br>900 ppm, Cl>900 ppm, jimlar >1500 ppm) saboda suna iya haifar da lalacewa da canza launi. Don tsaftacewa, yi amfani da isopropyl alcohol; kar a yi amfani da tsaftacewa ta ultrasonic saboda yana iya lalata LED.

9. Kwatancen Fasaha

Idan aka kwatanta da manyan fakitin SMD kamar 2835 (2.8×3.5 mm) ko 3528, fakitin 1608 yana ba da ƙarami 75% yayin da yake ba da isasshen haske don amfani da nuna (har zuwa 250 mcd). Fadin kusurwar gani 140° yana da fa'ida ga aikace-aikacen da ake buƙatar rarraba haske daidai. Duk da haka, iyakar ruwan gaba yana iyakance zuwa 20 mA, yana haifar da ƙaramin jimlar haske idan aka kwatanta da LEDs masu ƙarfi. Ya fi dacewa da ƙirar ƙarancin wuta, masu ƙuntataccen sarari.

10. Tambayoyin da Aka Yi Yawa

10.1 Yaya zan kula da na'urori masu saurin lalacewa ta ESD?

Koyaushe yi amfani da wuraren aiki da aka ƙasa a ƙasa, sanya igiyoyin hannu masu hana ESD, kuma adana LEDs a cikin tattara masu hana ESD.

10.2 Menene idan jakar hana damshi ta lalace?

Idan jakar ta lalace ko kuma mai nuna zafi ya nuna >30%, dole ne a gasa LEDs a 60±5°C na awa 24 kafin amfani.

10.3 Zan iya amfani da ruwan tuƙi daban-daban don rage haske?

Ee, ana iya tuƙa LED da ruwa daga 0 zuwa 20 mA. Ka lura cewa chromaticity na iya canzawa kaɗan tare da ruwa. Aikin bugun jini tare da ƙarancin aiki yana yiwuwa har zuwa 60 mA peak.

10.4 Shin wannan LED ya dace da amfani a waje?

Kewayon zafin aiki (-40 zuwa +85°C) ya dace da aikace-aikacen waje da yawa, amma ana buƙatar rufewar da ta dace da kariya daga zafi da gurɓatattun abubuwa.

11. Misalan Amfani

Misali na 1: Hasken bayan gidan thermostat na smart home - ƙananan sarari yana dacewa a kan PCB mai ƙanƙanta, yana ba da haske fari na matsayi. Misali na 2: Hasken maɓallin ciki na mota - fadin kusurwar gani yana tabbatar da gani daga kusurwoyi da yawa. Misali na 3: Mai nuna matakin baturi akan na'urorin lantarki masu ɗaukuwa - ƙarancin amfani da wuta yana ƙara tsawon rayuwar baturi.

12. Ka'idar Aiki

Wannan LED fari yana amfani da chip InGaN mai fitar da shuɗi wanda ke fitar da haske a ~450 nm. An rufe chip ɗin da phosphor mai fitar da rawaya (yawanci YAG mai ƙunshe da Ce). Haske shuɗi yana tada phosphor don fitar da haske rawaya; haɗin shuɗi da rawaya yana bayyana fari ga idon mutum. Rabon shuɗi zuwa rawaya yana ƙayyade zafin launi mai alaƙa.

13. Hanyoyin Ci Gaba

Hanyar masana'antar LED tana zuwa ga ƙananan fakitoci tare da mafi girma inganci. Fakitin chip-scale (CSP) da tsarin flip-chip suna samun shahara don mafi kyawun aikin zafi da rage girman. Wannan fakitin 1608 yana wakiltar fasahar da ta balaga wacce har yanzu ana amfani da ita sosai don nuna da aikace-aikacen nuni. Ci gaba na gaba ya haɗa da mafi girman haske a kowace raka'a da ingantaccen kwanciyar hankali na launi a kan zafi.