Bayanin LED Infrared 850nm - Girman 2.8x3.5x2.6mm - Ƙarfin Lantarki 1.4V - Ƙarfi 80mW - REFOND RF-P28Q3-IRJ-FT

1. Bayanin Samfurin

RF-P28Q3-IRJ-FT LED infrared ne mai inganci a cikin kunshin PPA (Polyphthalamide), mai girman 2.80mm x 3.50mm x 2.60mm. Yana fitar da haske a matsakaicin zango na 850nm, wanda ya sa ya dace da saka idanu na tsaro, haskaka infrared don kyamarori, da kuma tsarin hangen nesa na inji. Wannan LED yana da ƙaramin ƙarfin lantarki na gaba (yawanci 1.4V a 50mA), yana dacewa da reflow soldering mara guba, kuma ya bi ka'idar RoHS tare da matakin damshi na 5.

2. Nazarin Ma'aunin Fasaha

2.1 Halayen Lantarki da Haske

A yanayin gwaji na 25°C da kuma ƙarfin gaba na 50mA, LED yana nuna ƙarfin lantarki na gaba wanda yawanci 1.4V (max 1.6V). Matsayin zango shine 850nm tare da faɗin bakan (Δλ) na 30nm. Jimillar hasken radiyo (Φe) yana daga 14mW (min) zuwa 28mW (yawanci), yana ba da isasshen fitar da haske don ayyukan infrared kusa. Ƙarfin baya yana da ƙarami (max 10μA a 5V ƙarfin baya). Kusa da gani (2θ1/2) shine 17°, yana ba da kunkuntar haske wanda ya dace da haskaka da aka yi niyya.

2.2 Juriya na Zafin Jiki da Matsayin Ƙarfi

Juriya na zafin jiki daga haɗin gwiwa zuwa wurin maye (RTHJ-S) shine 50°C/W, yana nuna matsakaicin zubar da zafi. Matsayin ƙarfin da ya wuce: haskaka ƙarfi na 80mW, ƙarfin gaba na 50mA, da kuma zafin haɗin gwiwa har zuwa 105°C. LED na iya jure ESD har zuwa 2000V (HBM). Yanayin aiki da adanawa daga -40°C zuwa +85°C.

3. Tsarin Rarraba

Dangane da bayanin lakabin, kowane reel ana raba shi bisa ga jimillar hasken radiyo (Φe), matsakaicin zango (WLP), da ƙarfin lantarki na gaba (VF). Lambar rarraba (BIN CODE) ta ɓoye waɗannan sigogi don tabbatar da daidaito a cikin jigilar kaya. Misali, rarraba Φe na iya tara LEDs masu kama da haske, yayin da rarraba zango ke tabbatar da ƙarancin juriya ta bakan don ayyukan da ke buƙatar daidaito a fitar da haske.

4. Nazarin Matsayin Aiki

4.1 Ƙarfin Lantarki na Gaba vs. Ƙarfin Gaba

Ƙarfin lantarki na gaba yana ƙaruwa da ƙarfin gaba, yawanci daga 1.3V a 10mA zuwa 1.6V a 60mA. Wannan alaƙar da ba ta daidaita ba dole a yi la'akari da ita yayin tsara direbobi masu tsayayyen ƙarfi don guje wa guduwar zafin jiki.

4.2 Halayen Zafin Jiki

Ƙarfin haske na dangi yana raguwa yayin da zafin haɗin gwiwa ya tashi, yana rasa kusan 25% a 105°C idan aka kwatanta da 25°C. Matsayin rage ƙarfin gaba vs. zafin jiki yana nuna cewa dole a rage yawan ƙarfin gaba a yanayi mai zafi don kiyaye haɗin gwiwa ƙasa da 105°C.

4.3 Rarraba Bakan

Bakan haske yana kololuwa a 850nm tare da cikakken faɗin rabin ƙarfi na 30nm. Ƙarancin haske a waje da 800-900nm yana tabbatar da dacewa da na'urori masu auna haske na CMOS na siliki waɗanda aka fi amfani da su a kyamarori na saka idanu.

4.4 Tsarin Haskaka

Kusurwar rabin ƙarfi shine 17°, tare da kunkuntar haske. Hoton haskaka yana nuna rarraba mai santsi irin na Gaussian, yana ba da damar isar da haske mai inganci a aikace-aikacen da ke buƙatar haskaka mai sarrafawa.

5. Bayanin Injiniya da Marufi

5.1 Girman Kunshin

Kunshin yana da tsawon 2.80mm, faɗi 3.50mm, tsayi 2.60mm. Duk girman suna da juriya na ±0.2mm sai dai idan an faɗi akasin haka. Duban ƙasa yana nuna alamar polarity (kuskuren cathode), kuma filayen anode/cathode an nuna su a fili. Tsarin siyar da aka ba da shawarar a cikin zane (1.85mm x 1.25mm filaye tare da tazara 1.80mm) yana tabbatar da ingantaccen haɗin zafin jiki da lantarki.

5.2 Polarity da Kulawa

LED yana da alamar polarity a bayyane a saman (Fig.1-2). Daidaitaccen jagora yana da mahimmanci; juyar da baya na iya haifar da lalacewa nan take ko kuma lalacewa a cikin dogon lokaci.

6. Jagoran Siyarwa da Haɗawa

6.1 Tsarin Siyarwa na Reflow

Reflow soldering ya kamata a yi shi bisa ga tsarin da aka ƙayyade: preheat daga 160°C zuwa 200°C na daƙiƙa 60-120, hawan da ba zai wuce 3°C/s ba zuwa matsakaicin zafin 260°C (ba a wuce daƙiƙa 5 sama da 255°C ba), sannan a sanyaya a 6°C/s. Ana ba da izinin zagayen reflow guda biyu kawai, kuma idan fiye da sa'o'i 24 suka wuce tsakanin zagayen, dole ne a sake gasa LEDs.

6.2 Siyarwa da Gyara da Hannu

Don siyarwa da hannu, yi amfani da ƙarfe da aka saita ƙasa da 300°C na ƙasa da daƙiƙa 3. Ya kamata a guji gyara; idan ya zama dole, yi amfani da ƙarfe mai kai biyu kuma tabbatar da cewa halayen LED ba su lalace ba.

7. Bayanin Marufi da Oda

LED an marufi shi a cikin tef da reel tare da guda 3000 a kowane reel. Girman reel: diamita 330.2mm, cibiya 79.5mm, faɗi 12.7mm. Kowanne reel an rufe shi a cikin jakar hana damshi tare da busasshiyar kayan aiki da katin nuna danshi. Yanayin adanawa: kafin buɗe jakar, adana a ≤30°C da ≤75% RH har zuwa shekara 1; bayan buɗewa, yi amfani da shi cikin sa'o'i 48 a ≤30°C da ≤60% RH. Idan an buɗe jakar fiye da wannan lokacin, gasa a 60±5°C na sa'o'i 24 kafin amfani.

8. Shawarwarin Aikace-aikace

Kunkuntar haske na 17° da matsakaicin zango na 850nm sun sa wannan LED ya dace da haskaka IR mai nisa a kyamarori na tsaro, tantance faranti na mota, da tsarin hangen nesa na dare. Ana iya haɗa shi cikin tsari na jerin/daidaici, amma ana buƙatar daidaita ƙarfi da sarrafa zafin jiki a hankali don kasancewa cikin iyakokin da aka ba. Ana ba da shawarar ƙarfin juriya a kowane layin LED don hana raba ƙarfi.

9. Kwatancen Fasaha

Idan aka kwatanta da makamantan LEDs na 850nm a cikin kunshin 2835, RF-P28Q3-IRJ-FT yana da fa'ida mai ƙarancin ƙarfin lantarki na gaba (1.4V yawanci) wanda ke rage haskaka ƙarfi a cikin direbobi masu tsayayyen ƙarfi. Kunkuntar kusurwar gani na 17° yana ba da ƙarfi mai girma a kan axis fiye da masu haskaka fili mai faɗi, yana sa ya dace da haskaka tabo. Kunshin PPA yana ba da kyakkyawan tsayin zafin jiki fiye da wasu kunshin epoxy masu rahusa, kodayake juriya na zafin jiki na 50°C/W yana matsakaici.

10. Tambayoyin da Aka Yi Yawaita

Q: Ana iya tuka wannan LED a 100mA don bugu gajere?
A: Matsayin ƙarfin gaba da ya wuce shine 50mA DC. Ayyukan bugu (misali, 1/10 na aiki, 0.1ms) na iya ba da damar babban ƙarfin kololuwa, amma dole ne zafin haɗin gwiwa kada ya wuce 105°C.

Q: Menene shawarar kariya daga ESD yayin kulawa?
A: LED yana da darajar 2000V HBM, amma ana ba da shawarar matakan kariya daga ESD (wuraren aiki da ke da ƙasa, tiren ɗaukar kaya masu gudanarwa) sosai.

Q: Yaya LED yake aiki a ƙarƙashin juyar da baya?
A: Ƙarfin baya bai kamata ya wuce 5V ba. A 5V ƙarfin baya, matsakaicin ƙarfin baya shine 10μA; juyar da baya mai tsayi na iya haifar da ƙaura da lalacewa.

11. Misalin Tsari na Aiki

A cikin wani na'urar haskaka IR na kyamara na saka idanu na yau da kullun, an shirya LEDs takwas a cikin layi biyu na daidaici na huɗu a jere. Kowane layi ana tuka shi a 50mA tare da ƙarfin lantarki na 3.3V da kuma juriya 6.8Ω don iyakance ƙarfi. Jimillar haskaka ƙarfi (~1.28W) yana buƙatar ƙaramin allon PCB na aluminum tare da hanyoyin zafin jiki don kiyaye zafin haɗin gwiwa ƙasa da 85°C a yanayi na yau da kullun. Hasken 17° an mayar da hankali ta amfani da ruwan tabarau mai kunkuntar kusurwa don samun kewayon haskaka mai inganci fiye da mita 100.

12. Ka'idar Aiki

Wannan LED diode ne na semiconductor wanda ke fitar da haske a 850nm lokacin da aka tura shi gaba. Yankin aiki ya ƙunshi kayan haɗin III-V (yawanci AlGaAs ko GaAs) waɗanda ke canza ƙarfin lantarki zuwa photons na infrared kusa. Kunshin PPA (Polyphthalamide) yana ba da kariya ta injiniya, zubar da zafin jiki, da kuma tasirin ruwan tabarau don tsara tsarin haskaka.

13. Hanyoyin Ci gaba

Hanyoyin gaba a cikin LEDs na IR 850nm sun haɗa da mafi girman ingancin bango-ƙarfi don rage samar da zafi, ƙarami kunshin (misali, 1.6x1.6mm) don manyan jeri, da ingantacciyar juriya ga ESD. Bukatar haskaka IR a cikin saka idanu na AI, motoci masu zaman kansu, da gane motsin hannu tana tura masana'antun su ƙara yawan hasken radiyo yayin da suke kiyaye ƙarancin faɗin bakan.