Takaddun Bayanan LED PLCC4 Ja 3.5x2.8x1.85mm 1.8-2.4V 0.168W - Takardun Fasaha

1. Bayyanar Samfur

RF-RSRA30TS-CD-G LED ja ne mai inganci a cikin fakitin PLCC4, wanda aka ƙera don aikace-aikacen hasken mota masu buƙata. Tare da girma 3.50mm x 2.80mm x 1.85mm, wannan bangaren SMD yana ba da haske da aminci. Na'urar tana amfani da fasahar epitekiyal AlGaInP (Aluminum Gallium Indium Phosphide) akan wani abu, yana tabbatar da fitar haske mai inganci a tsawon igiyar haske na 627.5nm zuwa 637.5nm. Abubuwan da suka fi dacewa sun haɗa da kusurwar kallo mai faɗi 120°, bin ka'idojin AEC-Q101 na gwajin damuwa don semiconductor na mota, da matakin damshin 2. LED ɗin yana biyayya ga ROHS da REACH, yana sa ya dace da kasuwannin duniya.

Aikace-aikacen da ake nufa sun haɗa da tsarin hasken ciki da waje na mota kamar alamun dashboard, haske na yanayi na ciki, fitilun birki, da alamun juyawa. Fakitin mai ƙarfi yana tallafawa duk hanyoyin SMT da reflow soldering, kuma ana samunsa akan tef da reel don sarrafa kai tsaye.

2. Fassarar Ma'aunin Fasaha

2.1 Halayen Lantarki (Ts=25°C)

Ƙarfin wutar lantarki (VF) a gwajin halin yanzu na 50mA an kayyade shi da mafi ƙanƙanta 1.8V, matsakaici 2.2V, da mafi girma 2.4V. Wannan ƙarfin wutar lantarki mai ƙanƙanta yana ba da damar amfani da wutar lantarki yadda ya kamata a cikin tsarin mota 12V idan aka haɗa shi da masu ƙuntata halin yanzu. Halin yanzu na baya (IR) a VR=5V yana ƙasa da 10µA, yana nuna amincin haɗin gwiwa. Matsakaicin iyaka sun nuna mafi girman halin yanzu na 70mA DC da mafi girman halin yanzu na 100mA (a 1/10 duty cycle, 10ms faɗin bugun), yana ba da sarari don aiki da bugun. Rashin haske ya iyakance zuwa 168mW, kuma zafin haɗin gwiwa bai kamata ya wuce 120°C ba.

2.2 Halayen Haske (IF=50mA)

Hasken haske (IV) yana daga 1200mcd (mafi ƙanƙanta) zuwa 2800mcd (mafi girma), tare da matsakaicin ƙima na 1800mcd. Wannan haske mai yawa yana ba da damar gani a cikin hasken rana kai tsaye. Tsawon igiyar haske (Wd) an daure shi da kyau daga 627.5nm zuwa 637.5nm, yana tabbatar da daidaiton launi a cikin rukunoni. Kusurwar kallo (2θ1/2) yawanci 120°, yana ba da ɗaukar haske mai faɗi wanda ya dace da alamomi da haske na yanayi. Juriya na zafi (RTHJ-S) an ƙiyasta shi da 150°C/W mafi girma, wanda dole ne a yi la'akari da shi a cikin ƙirar sarrafa zafi.

2.3 Matsakaicin Iyaka

Yanayin zafin aiki shine -40°C zuwa +100°C, kuma yanayin zafin ajiya shima -40°C zuwa +100°C. Iyawar juriya na lantarki (ESD) shine 2000V (HBM), tare da fiye da 90% yawan amfanin ƙasa a wannan matakin, amma ana ba da shawarar kariya ta ESD yayin sarrafawa. Na'urar ta cancanta a ƙarƙashin jagororin AEC-Q101 don semiconductor na mota.

3. Tsarin Rarraba

An rarraba samfur zuwa rukuni don ƙarfin wutar lantarki, haske, da tsawon igiyar haske don tabbatar da daidaiton aiki.

3.1 Rukunin Ƙarfin Wutar Lantarki (IF=50mA)

An ayyana rukuni shida: B1 (1.8-1.9V), B2 (1.9-2.0V), C1 (2.0-2.1V), C2 (2.1-2.2V), D1 (2.2-2.3V), D2 (2.3-2.4V). Wannan rarrabuwa mai kyau yana ba abokan ciniki damar zaɓar na'urorin da suka dace da ƙirar direbansu.

3.2 Rukunin Hasken Haske (IF=50mA)

Rukuni huɗu: M1 (1200-1500mcd), M2 (1500-1800mcd), N1 (1800-2300mcd), N2 (2300-2800mcd). Rukunoni mafi girma suna ba da fitarwa mai haske, yana ba da damar sauƙin ƙira.

3.3 Rukunin Tsawon Igyar Haske (IF=50mA)

Rukuni huɗu: F2 (627.5-630nm), G1 (630-632.5nm), G2 (632.5-635nm), H1 (635-637.5nm). Sarrafa tsawon igiyar haske mai kyau yana tabbatar da bayyanar launi iri ɗaya a cikin rukunonin LED da yawa.

4. Nazarin Ƙirar Ayyuka

Takaddun bayanai suna ba da nau'ikan ƙirar yau da kullun a Ts=25°C (sai dai in an lura) don jagorantar ƙira:

• Ƙarfin Wutar Lantarki vs. Halin Yanzu (Fig. 1-7):Ƙirar tana nuna dangantaka marar daidaituwa wacce ta saba da LED. A 1.8V halin yanzu yana kusa da sifili; a 2.2V halin yanzu yana kaiwa ~50mA; a 2.4V halin yanzu ya wuce 70mA. Masu ƙira dole ne su yi amfani da masu ƙuntata halin yanzu ko direbobi masu tsayayyen halin yanzu.
• Halin Yanzu vs. Ƙarfin Haske (Fig. 1-8):Ƙarfin haske yana ƙaruwa kusan daidai da halin yanzu daga 0 zuwa 70mA, yana kaiwa ~120% a 70mA dangane da maƙasudin 50mA. Wannan yana ba da damar rage haske ta hanyar PWM.
• Zafin Solder vs. Ƙarfin Haske (Fig. 1-9):Yayin da zafin solder (Ts) ya tashi daga 20°C zuwa 120°C, hasken haske yana raguwa zuwa kusan 80% a 120°C. Sarrafa zafi yana da mahimmanci don kiyaye fitar haske.
• Zafin Solder vs. Halin Yanzu (Fig. 1-10):Matsakaicin halin yanzu da aka yarda dole ne a rage shi yayin da zafin yanayi ya ƙaru. A Ts=100°C, matsakaicin halin yanzu da aka ba da shawara shine kusan 40mA (idan aka kwatanta da 70mA a 25°C).
• Ƙarfin Wutar Lantarki vs. Zafin Solder (Fig. 1-11):Ƙarfin wutar lantarki yana raguwa tare da ƙaruwar zafin jiki a gwargwadon kusan -2mV/°C, wanda ke taimakawa hana guduwar zafi a cikin ƙirar ƙarfin lantarki mai tsayayye amma dole ne a yi la'akari da shi a cikin da'irori masu tsayayyen halin yanzu.
• Zanen Radiyo (Fig. 1-12):Rarraba ƙarfin haske a kusurwa yana kusan Lambertian tare da rabin kusurwa ±60°, yana tabbatar da kusurwar kallo 120°. Ƙarfin haske yana raguwa zuwa 50% a ±60°.
• Halin Yanzu vs. Tsawon Igyar Haske (Fig. 1-13):Yayin da halin yanzu ya ƙaru daga 0 zuwa 70mA, tsawon igiyar haske yana motsawa kaɗan zuwa tsawon igiyar haske (ja-shift) da kusan 2nm. Wannan tasirin yana da ƙanƙanta (<1nm) ga halin yanzu kusa da yanayin gwaji.
• Rarraba Spectra (Fig. 1-14):Rarraba ƙarfin haske yana kaiwa kololuwa a kusa da 630nm tare da ƙunƙuntaccen FWHM (cikakken faɗi a rabin matsakaici) na kusan 20nm, wanda ya zama alama ga AlGaInP LED ja.

5. Bayanan Makanikai da Marufi

5.1 Girman Fakitin

LED ɗin yana auna 3.50mm x 2.80mm x 1.85mm (tsawon x faɗi x tsawo). Alamar polarity an nuna a kan kallon sama. Kallon ƙasa yana nuna gatura huɗu: fitila 1 (Anode), fitila 2 (Cathode), da ƙarin gatura biyu (fitila 3 da 4 ba a haɗa su ba ko kuma suna iya zama tallafi na makanikai). An bayar da girman ƙirar soldering (sawu) da aka ba da shawara: 2.60mm (faɗi) x 1.60mm (tsawo) ga kowane pad, tare da faɗin gabaɗaya 4.60mm. Duk girma suna da haƙuri ±0.2mm sai dai in an lura.

5.2 Bayanan Tef da Reel

Ana ba da LED ɗin a cikin tef ɗin ɗaukar hoto tare da tazara 4.00mm, faɗi 8.0mm, da girman aljihu 3.50mm x 3.50mm. Kowane reel yana ɗauke da guda 2000. Reel ɗin yana da diamita 330mm ±1mm, diamita cibiya 100mm ±1mm, da faɗi 13.0mm±0.5mm. Label ɗin da ke kan reel yana nuna lambar sashi, lambar kuri'a, lambar rukuni, da adadi.

5.3 Marufi Mai Juriya Danshi

Ana tattara LED ɗin a cikin jakar katanga na danshi tare da bushewa da katin nuna danshi don kiyaye matakin danshi kafin buɗewa. Yanayin ajiya: kafin buɗewa, adana a ≤30°C da ≤75%RH har zuwa shekara ɗaya; bayan buɗewa, yi amfani da shi cikin sa'o'i 24 a ≤30°C da ≤60%RH. Idan ba a yi amfani da shi cikin sa'o'i 24 ba, gasa a 60±5°C na > sa'o'i 24.

6. Jagororin Solder da Haɗuwa

6.1 Bayanin Reflow Solder

Bayanin reflow da aka ba da shawara ya dogara ne akan ma'aunin JEDEC. Maɓallan ma'auni: preheat daga 150°C zuwa 200°C a cikin daƙiƙa 60-120; ƙimar hawa ≤3°C/s; lokaci sama da 217°C (TL) bai kamata ya wuce 60 seconds ba; matsakaicin zafin jiki (TP) 260°C tare da matsakaicin lokaci a cikin 5°C na kololuwa na daƙiƙa 10; ƙimar saukowa ≤6°C/s. Jimlar lokaci daga 25°C zuwa kololuwa yakamata ya zama ≤ mintuna 8. Refrow soldering bai kamata a yi shi fiye da sau biyu ba. Idan fiye da sa'o'i 24 sun shuɗe tsakanin zagayen soldering, LED ɗin na iya lalacewa saboda shan danshi.

6.2 Solder da Hannu da Gyara

Idan solder da hannu ya zama dole, yi amfani da ƙarfen soldering a ≤300°C na ƙasa da daƙiƙa 3, kuma sau ɗaya kawai. Ba a ba da shawarar gyara bayan reflow ba. Idan ba zai yuwu ba, yi amfani da ƙarfen soldering mai kai biyu kuma tabbatar da ba lalacewar halayen LED ba.

6.3 Kariya yayin Sarrafawa

Marufin LED shine silicone, wanda yake laushi. Kada ku matsa lamba mai yawa a saman ruwan tabarau yayin ɗauka da sanyawa. Ka guji hawa akan PCBs marasa daidaituwa. Kada a yi amfani da damuwa na makanikai ko girgiza yayin sanyaya bayan soldering. Ba a ba da shawara ga sanyaya da sauri ba. Adadin sulfur a cikin kayan haɗi bai kamata ya wuce 100PPM ba; bromine da chlorine kowanne<900PPM, jimlar<1500PPM. Abubuwan da ke iya ƙonewa (VOCs) daga kayan kayan aiki na iya canza launin silicone; yi amfani da adhesives masu jituwa.

7. Bayanan Marufi da Oda

Marufi na yau da kullun: LED 2000 a kowace reel. Ana sanya reel ɗin a cikin jakar katanga na danshi tare da label, sannan a tattara shi a cikin akwatin kwali. Label ɗin ya haɗa da lambar sashi, lambar spec, lambar kuri'a, lambar rukuni (hasken haske, chromaticity, ƙarfin wutar lantarki, tsawon igiyar haske), adadi, da kwanan wata. Don oda, ana amfani da lambar sashi cikakke RF-RSRA30TS-CD-G. Za a iya samun zaɓin rukuni na musamman bisa buƙata.

8. Shawarwarin Aikace-aikace

Wannan LED ja ya dace da hasken ciki da waje na mota. A cikin aikace-aikacen ciki (misali, alamun dashboard, hasken yanayi), kusurwar kallo mai faɗi yana tabbatar da haske iri ɗaya. A aikace-aikacen waje (misali, fitilun birki, alamun juyawa), ƙarfin haske mai girma (har zuwa 2800mcd) yana ba da hasken da ake buƙata. Masu ƙira yakamata su haɗa da sarrafa zafi don kiyaye zafin haɗin gwiwa ƙasa da 120°C. Yi amfani da direbobi masu tsayayyen halin yanzu tare da masu ƙuntata halin yanzu da suka dace. Don aiki da bugun (misali, rage haske ta PWM), matsakaicin halin yanzu na iya zuwa 100mA a ƙananan duty cycles. Tabbatar da kariya ta ESD yayin haɗuwa da sarrafawa.

9. Kwatanta Fasaha

Idan aka kwatanta da LED ja na yau da kullun da aka rufe da epoxy, wannan na'urar PLCC4 tana ba da kusurwar kallo mai faɗi (120° vs 90° na yau da kullun) da mafi girman aminci ga yanayin mota. Cancantar AEC-Q101 ta bambanta shi daga LED na kasuwanci, yana tabbatar da aiki a ƙarƙashin jujjuyawar zafi, babban zafin jiki, da danshi. Marufin silicone yana ba da juriya mafi kyau ga damuwa na zafi da lalacewar UV fiye da epoxy. Rarraba mai tsauri (matakan 0.1V don VF, matakan 300-500mcd don IV, matakan 2.5nm don tsawon igiyar haske) yana tabbatar da kyakkyawan daidaiton launi da haske a cikin rukunin samarwa.

10. Tambayoyin da ake yawan yi

Tambaya: Menene halin yanzu da aka ba da shawara ga wannan LED?
Amsa: Halin yanzu na gwaji shine 50mA, amma matsakaicin halin yanzu DC shine 70mA. Don tsawon rayuwa, ana ba da shawarar 50mA. Don aiki da bugun, har zuwa 100mA a 10% duty cycle (bugun 10ms) an yarda.

Tambaya: Za a iya amfani da wannan LED a aikace-aikacen mota na waje?
Amsa: Ee. Ta cancanta a ƙarƙashin AEC-Q101 don amfanin mota, tare da yanayin zafin aiki na -40°C zuwa +100°C, wanda ya dace da hasken waje.

Tambaya: Shin ina buƙatar gasa LED ɗin kafin amfani?
Amsa: Sai dai idan an buɗe jakar katanga na danshi fiye da sa'o'i 24, ko kuma idan alamar nuna danshi ta nuna danshi mai yawa. Ana ba da shawarar gasa a 60±5°C na > sa'o'i 24.

Tambaya: Ta yaya zan zaɓi rukunin da ya dace don aikace-aikacena?
Amsa: Yi amfani da allunan rarraba. Don launin ja mai daidaituwa, zaɓi rukunin tsawon igiyar haske guda (misali, G1 630-632.5nm). Don haske, zaɓi M2 ko sama. Daidaita rukunin ƙarfin wutar lantarki da fitar da direbanka.

11. Nazarin Shari'ar Zane: Haske na Yanayi na Cikin Mota

Yi la'akari da zane don layin haske na yanayi na tsakiyar mota ta amfani da LED 10. Kowane LED ana motsa shi a 50mA (yawanci). Tare da ƙarfin wutar lantarki na 2.2V, jimlar ƙarfin wutar lantarki na layi (idan an haɗa shi a jere) zai kasance 22V, yana buƙatar mai jujjuya wutar daga batir 12V. A madadin, amfani da layi 5 daidai gwargwado na LED 2 kowanne, kowane layi yana da ~4.4V, tare da masu ƙuntata halin yanzu. Nazarin zafi: jimlar rashin haske = 10 * 50mA * 2.2V = 1.1W. Idan yanayi shine 85°C, tashin zafin haɗin gwiwa = ƙarfi * juriya na zafi (150°C/W) kowane LED = 0.11W * 150°C/W = 16.5°C, zafin haɗin gwiwa = 101.5°C (<120°C). Tabbatar da yankin jan ƙarfe na PCB don yada zafi. Kusurwar kallo mai faɗi 120° tana tabbatar da rarraba haske daidai ba tare da na'urorin gani na biyu ba.

12. Ka'idar Aiki

Wannan LED ja yana amfani da tsarin AlGaInP (Aluminum Gallium Indium Phosphide) mai yawan ramuka (MQW) wanda aka girma akan wani abu (yawanci GaAs ko abu mai haske). Layer mai aiki yana fitar da haske ta hanyar sake haɗuwa da lantarki-hutu lokacin da aka kunna wutar lantarki. Tsawon igiyar haske yana ƙayyade ta hanyar bandgap na kayan AlGaInP, wanda aka daidaita ta hanyar abubuwan aluminum da indium. Fakitin PLCC4 yana ba da rami mai nuni don haɓaka fitar haske, kuma ruwan tabarau na silicone yana siffata tsarin haske zuwa kusurwar kallo 120° da aka kayyade.

13. Yanayin Ci Gaba

Fasahar LED na mota na ci gaba da tafiya zuwa ingantaccen haske (lm/W) da kuma sarrafa zafi mafi kyau. Ga LED ja, ingantawa a cikin epitekiyal AlGaInP ya ƙara inganci, kuma sabbin ƙirar marufi (misali, fakitin ma'aunin guntu) suna ba da ƙananan siffofi. Yanayin zuwa haske mai daidaitawa da fitilun mota masu matrix yana buƙatar rarraba mai tsauri da mafi girman aminci. Bugu da ƙari, shigar da AEC-Q102 (mafi tsauri fiye da Q101) yana fitowa. Biyayyar wannan LED ga AEC-Q101 ya sanya shi a matsayin mai dacewa da ƙirar mota na yanzu, kuma nau'ikan gaba na iya haɗa da kariyar ESD da ƙarin iyawar halin yanzu.