Bayanan LED Rawayan RF-A4E27-Y92E-Y4 - 2.7x2.0x0.6mm - 2.0-2.6V - 520mW - Rawayan 590nm

1. Bayanin Samfur

RF-A4E27-Y92E-Y4 wani LED ne mai haske rawaya mai inganci wanda aka yi ta amfani da fasahar AlGaInP (Aluminum Gallium Indium Phosphide) na ci gaba a kan wani tushe. Wannan na'urar an tsara ta musamman don amfani a cikin motoci na ciki da waje inda dogaro, kusurwar kallo mai faɗi, da daidaiton launi ke da mahimmanci. LED ɗin an saka shi a cikin ƙaramin kayan EMC (Epoxy Molding Compound) mai girman 2.7mm x 2.0mm x 0.6mm, wanda ya dace da tsarin haɗa SMT. Abubuwan da ke da muhimmanci sun haɗa da kusurwar kallo mai faɗin digiri 120, bin ka'idodin RoHS, da kuma cancanta bisa gwajin AEC-Q102 na matsin lamba ga masu karɓar lantarki na mota. Matsayin damfara na danshi yana da darajar Level 2, yana ba da daidaito tsakanin ƙarfi da sauƙin sarrafawa yayin ƙira.

2. Fahimtar Bayanan Fasaha

2.1 Halayen Lantarki-Haske (Ts=25°C)

A gwajin na yanzu na 150mA, ƙarfin gaba (VF) yana daga mafi ƙarancin 2.0V zuwa mafi girman 2.6V, tare da aikin yau da kullun a kusa da 2.2-2.4V dangane da bin. Matsin baya (IR) a VR=5V yana da ƙarancin gaske, yawanci ƙasa da 10µA, yana tabbatar da aiki mai ƙarfi a yanayin jujjuyawar baya. Haske (Φ) yana daga 19.6lm zuwa 26.9lm, an raba shi zuwa bins uku: KA (19.6-21.8lm), KB (21.8-24.2lm), da LA (24.2-26.9lm). Wannan yana ba abokan ciniki damar zaɓar bins masu tsauri don ƙirar haske iri ɗaya. Tsawon raƙuman haske (λD) yana sarrafa shi sosai tsakanin 587.5nm da 595nm, tare da ƙananan bins uku: D2 (587.5-590nm), E1 (590-592.5nm), da E2 (592.5-595nm). Wannan yana tabbatar da daidaiton launi mai kyau tsakanin batches. Kusurwar kallo (2θ1/2) yawanci digiri 120 ne, yana ba da ɗaukar haske mai faɗi wanda ya dace da alamun mota da hasken baya.

2.2 Matsakaicin Matsayin Ƙarfe

Na'urar na iya jure mafi girman wutar lantarki (PD) na 520mW, tare da ƙarfin gaba (IF) har zuwa 200mA na ci gaba da kuma ƙarfin gaba mafi girma (IFP) na 350mA (1/10 na zagaye, bugun 10ms). Matsayin ƙarfin baya (VR) shine 5V. Kariyar wutar lantarki (ESD) ta cika HBM 2000V, yana tabbatar da ƙarfi a yanayin haɗi. Zazzabi na aiki yana daga -40°C zuwa +125°C, zazzabi na ajiya daga -40°C zuwa +125°C, kuma mafi girman zazzabi na haɗi (TJ) shine 150°C. Rth JS (ainihi) yawanci 35°C/W ne kuma mafi girma 46°C/W; Rth JS (lantarci) yawanci 28°C/W ne kuma mafi girma 37°C/W. Gudanar da zazzabi mai kyau yana da mahimmanci don kiyaye zazzabin haɗi ƙasa da mafi girman darajar.

2.3 Tsarin Binning

LED ɗin an raba shi zuwa bins don ƙarfin gaba, haske, da tsawon raƙuman haske a IF=150mA. Bins na ƙarfin gaba: C0 (2.0-2.2V), D0 (2.2-2.4V), E0 (2.4-2.6V). Bins na haske: KA (19.6-21.8lm), KB (21.8-24.2lm), LA (24.2-26.9lm). Bins na tsawon raƙuman haske: D2 (587.5-590nm), E1 (590-592.5nm), E2 (592.5-595nm). Wannan tsarin binning yana ba masu ƙira damar zaɓar LEDs waɗanda ke da halayen lantarki da haske daidai, yana rage bambance-bambance a cikin samfuran ƙarshe.

3. Nazarin Halayen Aiki

3.1 Ƙarfin Gaba vs. Ƙarfin Yanzu

Ƙirar halin yanzu-ƙarfin (I-V) tana nuna hali yawanci na ƙarfi tare da ƙarfin kunna a kusa da 1.8V. A 150mA, ƙarfin gaba yana kusan 2.2V. Ƙirar tana ba da mahimman bayanai don ƙirar masu tuƙi na yanzu mai ɗorewa.

3.2 Haske Mai Dangantaka vs. Ƙarfin Yanzu

Haske mai dangantaka yana ƙaruwa daidai da ƙarfin yanzu har zuwa kusan 150mA, sannan yana fara ƙarewa saboda zafi na haɗi. A 150mA, an daidaita haske mai dangantaka zuwa 100%. Wannan dangantaka tana taimakawa wajen inganta tuƙin yanzu don haske da ake so ba tare da wuce iyakar wutar ba.

3.3 Dogaro da Zazzabi

Haske yana raguwa yayin da zazzabin haɗi ya tashi: a Tj=125°C, haske mai dangantaka yana faduwa zuwa kusan 80% na darajar a 25°C. Haka kuma, ƙarfin gaba yana raguwa tare da ƙara zazzabi (ƙananan ma'aunin zazzabi). Tsawon raƙuman haske yana motsawa zuwa tsawon raƙuman haske (ja) tare da ƙara zazzabi, kusan 0.05-0.1nm/°C. Waɗannan tasirin zazzabi dole ne a yi la'akari da su a aikace-aikacen zazzabi mai zafi kamar cikin mota.

3.4 Tsarin Rarraba Haske

Zanen rarraba haske yana nuna rarraba Lambertian mai faɗi tare da kusurwar rabin ƙarfi kusan 60° (120° jimlar kusurwar kallo). Ƙarfin yana daidaita a cikin mazubin haske, yana sa wannan LED ya dace da aikace-aikacen da ke buƙatar haske mai faɗi.

3.5 Rarraba Ƙaƙwalwar Haske

Ƙaƙwalwar haske tana fitowa a kusa da 590-592nm tare da cikakken nisa a rabin mafi girman (FWHM) na kusan 15-20nm. Ƙaƙwalwar tana nuna ƙarancin haske mara kyau a waje da band ɗin rawaya, yana tabbatar da tsaftar launi.

4. Bayanan Injiniya da Marufi

4.1 Girman Kayan

LED ɗin yana da girman kallon sama na 2.70mm x 2.00mm, tare da tsawon 0.60mm (dukkan tolerances ±0.2mm sai dai in an faɗi). Kallon ƙasa yana nuna pads guda biyu na anode (A) da pads guda biyu na cathode (C), an nuna su a fili. An bayar da shawarar ƙirar ƙasa don haɗi mai aminci. Alamar polarity tana bayyana a kan kayan.

4.2 Alamar Polarity da Ƙirar Haɗi

Pinout yana gano pads: Pads na Anode (A) sune 1.30mm x 0.45mm, pads na Cathode (C) sune 1.30mm x 1.20mm. Tsarin pad ɗin haɗi a PCB ya kamata ya dace da shawarar ƙasa don tabbatar da kyakkyawar tuntuɓar zazzabi da lantarki.

5. Jagororin Haɗi da Taro

5.1 Tsarin Refow na Haɗi

Shawarar tsarin refow na biye da ƙa'idodin JEDEC: preheat daga 150°C zuwa 200°C na 60-120 seconds, saurin ƙara ≤3°C/s, lokacin sama da 217°C (TL) har zuwa 60 seconds, mafi girman zazzabi (TP) 260°C tare da lokaci a cikin 5°C na mafi girma (tp) har zuwa 10 seconds, saurin sanyaya ≤6°C/s. Jimlar lokaci daga 25°C zuwa mafi girma bai kamata ya wuce mintuna 8 ba. Ba a yarda da zagayen refow fiye da biyu ba, kuma idan tazara tsakanin zagaye ya wuce awanni 24, dole ne a gasa LEDs don cire danshi.

5.2 Kariya yayin Sarrafawa

Kayan rufewa shine silicone, wanda ya fi taushi fiye da epoxy na gargajiya. Ka guji matsawa inji a kan ruwan tabarau. Yi amfani da ƙarfin bututu mai dacewa yayin ɗauka da sanyawa. Kada ka saka LEDs a kan PCB mara daidaito ko kuma tanƙwara allon bayan haɗi. Ka guji sanyaya da sauri bayan refow. Don tsaftacewa, ana ba da shawarar isopropyl alcohol; tsaftacewa ta ultrasonic na iya yin lalacewa. Yanayin ajiya kafin buɗe jakar aluminum: ≤30°C, ≤75% RH, har zuwa shekara 1. Bayan buɗewa, yi amfani da shi cikin awanni 24 a ≤30°C, ≤60% RH. Idan ya wuce, gasa a 60±5°C na >24 hours.

6. Bayanan Marufi da Oda

6.1 Bayanin Marufi

LEDs ana ba da su a kan tef da reel tare da 4000 kowane reel. Girman tef ɗin: A0=2.10±0.1mm, B0=3.05±0.1mm, K0=0.75±0.1mm (zurfi). Nisa na tef shine 8.0±0.2mm. Girman reel: diamita 180±1mm, nisa 12±0.1mm, diamita na hub 60±1mm. Kowanne reel an yiwa lakabi da lambar sashi, lambar takamaiman bayani, lambar lot, lambar bin (haske, bin chromaticity, ƙarfin gaba, tsawon raƙuman haske), adadi, da kwanan wata. An rufe reel ɗin a cikin jakar kariyar danshi tare da desiccant da katin nuna danshi, sannan a tattara a cikin akwatin kwali.

7. Shawarwarin Aikace-aikace

Wannan LED rawaya yana dacewa da aikace-aikacen haske na mota ciki har da haske na ciki na ambience, alamun dashboard, alamun juyawa, da alamun waje na gefe. Kusurwar kallo mai faɗi tana tabbatar da ganuwa mai kyau daga kusurwoyi daban-daban. Cancantar AEC-Q102 tana tabbatar da dogaro a ƙarƙashin yanayin mota mai tsauri (juyawar zazzabi, danshi, girgiza). Don ingantaccen aiki, yi amfani da tuƙi na yanzu mai ɗorewa tare da masu iyakance yanzu masu dacewa. Tsarin zazzabi yana da mahimmanci: tabbatar da PCB tana ba da isasshen ɗaukar zafi don kiyaye zazzabin haɗi ƙasa da 150°C. Mafi girman ƙarfin gaba na ci gaba na 200mA ya kamata a rage shi a yanayin zazzabi mai zafi kamar yadda aka nuna a ƙirar zazzabi na haɗi vs. ƙarfin yanzu. Ka guji haɗuwa da abubuwan da ke ɗauke da sulfur (>100ppm) da halogens (bromine<900ppm, chlorine<900ppm, jimlar<1500ppm) don hana lalacewa da raguwar haske.

8. Kwatanta Fasaha

Idan aka kwatanta da LEDs rawaya na gargajiya da aka yi ta amfani da tsofaffin fasahohin GaAsP ko InGaAlP, LED AlGaInP da aka yi amfani da shi a wannan ɓangare yana ba da ingantaccen haske, kwanciyar hankali na zazzabi, da juriya na tsawon raƙuman haske mai kunkuntar. Kayan EMC yana ba da juriya mafi kyau ga danshi fiye da kayan epoxy na gargajiya kuma yana ba da dogaro mafi girma a yanayin mota. Kusurwar kallo na 120° ta fi girma fiye da yawancin LEDs SMD daidai (yawanci 110°), yana sa ta dace da aikace-aikacen haske na gefe ko haske na baya. Cancantar AEC-Q102 tana bambanta wannan ɓangare daga yawancin LEDs na kasuwanci, yana tabbatar da aiki na dogon lokaci a ƙarƙashin yanayi mai tsauri.

9. Tambayoyi da Amsoshi

Tambaya 1: Zan iya amfani da wannan LED a ƙarfin yanzu mafi girma fiye da 150mA?
Amsa: Mafi girman ƙarfin gaba na ci gaba shine 200mA. Duk da haka, aiki a ƙarfin yanzu mafi girma yana ƙara zazzabin haɗi kuma yana iya rage rayuwa ko haifar da canjin launi. Koyaushe ka tabbatar da yanayin zazzabi a wurin aikin da ake nufi.

Tambaya 2: Menene tsawon rayuwa na yau da kullun na wannan LED?
Amsa: Idan an yi aiki a cikin iyakokin mafi girman darajar kuma tare da ingantaccen tsarin zazzabi, ana sa ran LED ɗin zai wuce sa'o'i 50,000 na aiki. Cancantar AEC-Q102 ta haɗa da gwaje-gwaje na rayuwa na dogon lokaci (sa'o'i 1000 a 105°C/150mA).

Tambaya 3: Ta yaya zan tsaftace LED ɗin bayan haɗi?
Amsa: Yi amfani da isopropyl alcohol (IPA) don tsaftacewa. Ka guji abubuwan da zasu iya lalata silicone ko kayan EMC. Kada ka yi amfani da tsaftacewa ta ultrasonic saboda yana iya lalata haɗin waya.

Tambaya 4: Menene yanayin ajiya bayan buɗe jakar kariyar danshi?
Amsa: Ajiye a ≤30°C da ≤60% RH. Yi amfani da shi cikin awanni 24. Idan ba a yi amfani ba, gasa a 60±5°C na >24 kafin amfani.

10. Hanyoyin Aikace-aikace na Aiki

A cikin gungu na kayan aikin mota, wannan LED rawaya za a iya amfani da shi don alamun gargadi (misali, duba injin, haske mai girma). Saboda kusurwar kallo na 120°, alamar tana bayyana ko da a wuraren da ba na tsakiya ba. A cikin hasken waje na baya, za a iya amfani da LEDs da yawa a cikin jerin-daidaitacce arrays don cimma hasken da ake buƙata tare da redundancy. Tsarin yau da kullun yana amfani da LEDs 6 a jere wanda aka tuƙa ta hanyar tushen yanzu mai ɗorewa na 150mA, tare da jimlar ƙarfin gaba kusa da 13.2V. Vias na zazzabi a ƙarƙashin pads na LEDs suna taimakawa wajen rarraba zafi zuwa filin jan ƙarfe na PCB. Ƙaramar bin tsawon raƙuman haske na LED yana tabbatar da launin amber mai daidaita a cikin kayan haske, yana cika ƙa'idodin ECE na mota don alamun sigina.

11. Gabatarwar Ƙa'ida

Haske na LED ya fito ne daga sake haɗuwa da electrons da holes a cikin matakin aiki na heterostructure AlGaInP. Ƙarfin bandgap na kayan aiki yana ƙayyade tsawon raƙuman haske. Ta hanyar daidaita abubuwan da ke cikin aluminum, gallium, indium, da phosphorus, za a iya daidaita haske zuwa rawaya zuwa ja. A wannan na'urar, an daidaita abubuwan don haske rawaya na 590nm. Tsarin yana girma a kan tushe don ba da damar layukan epitaxial masu ingancin crystalline. Kayan EMC yana rufe chip ɗin tare da ruwan tabarau na silicone mara phosphor wanda ke ba da babban ingancin fitarwa da kuma tsarin rarraba haske mai faɗi.

12. Halayen Ci gaba

Masana'antar haske na mota tana motsawa zuwa ƙarami, inganci mafi girma, da kuma sarrafa launi mai tsauri. LEDs masu ƙaramin girman (kamar 2.7x2.0mm) suna ba da damar jagororin haske masu sirara da ƙira masu tauri. Hanyoyin gaba sun haɗa da haɗa kayan sarrafa zazzabi na ci gaba (misali, tushen yumbu), ƙara haske a kowane kayan, da kuma ƙungiyoyin LED masu wayo tare da masu tuƙi a ciki. Yunkurin zuwa motoci masu sarrafa kansu zai buƙaci dogaro mafi girma da redundancy a tsarin haske. Wannan LED, tare da cancantar AEC-Q102, yana cikin matsayi mai kyau don saduwa da waɗannan buƙatun masu tasowa.