Usayizi Wephakheji ye-SMD LED: 2835 vs 5050 vs 3528 kanye nokukhethwa kwe-PCB

Osayizi bephakheji ye-SMD LED njengo-2835, 5050, kanye no-3528 bakutshela okungaphezu nje konyawo kuphela: basikisela ukuphuma kwe-lumen, indlela yokushisa, ubuningi be-assembly, kanye nohlobo lwe-PCB umkhiqizo oludingayo ngaphansi. Ukukhetha iphakheji efanele kusho ukulinganisela ukusebenza kwe-optical, ukwakheka komshayeli, kanye nokususwa kokushisa kunokulandela usayizi wengxenye eyodwa. Lo mhlahlandlela uqhathanisa osayizi bephakheji ye-SMD LED abavame kakhulu, uchaza ukuguquguquka kwe-COB vs SMD, futhi ukhombisa ukuthi i-Highleap Electronics yakha kanjani amabhodi e-LED ahlala epholile futhi ethembekile.

1. Iyini i-chip ye-SMD LED?

I-SMD LED iyi-diode ekhipha ukukhanya yedivayisi efakwa phezu kwayo — i-LED eyakhelwe ephaketheni elincane, eliyisicaba elihlanganiswe ngqo ebusweni be-PCB kunokuba lidlule ezimbobeni ezinezintambo zocingo. Lokhu kupakisha kuyenza ibe ncane, ifanele ukuhlanganiswa okuzenzakalelayo, futhi kube lula ukuyipakisha ixinene, yingakho ilawula ukukhanya kwesimanje, izibonisi, kanye nezinkomba.

I-LED ngayinye ye-SMD iqukethe i-semiconductor dies eyodwa noma ngaphezulu ezikhipha ukukhanya, ezifakwe ephaketheni elinama-terminals athengiswayo futhi ngokuvamile i-thermal pad encane ngaphansi ukuze ithwale ukushisa ebhodini. Leyo thermal pad iyimininingwane eyinhloko: i-LED iguqula ingxenye yamandla ayo ibe ukukhanya kanti okunye kube ukushisa, futhi lapho lokho kushisa kuya khona kunquma ukuqina kokukhanya kwe-LED kanye nokuphila kwayo. Ngenxa yokuthi ama-LED abekwa ngezinqubo ezifanayo nezinye izingxenye zokufaka phezulu, ukwakha umkhiqizo we-LED ngokuyisisekelo kuwumsebenzi wokuhlanganisa ukufakwa phezulu - ngomklamo wokushisa njengokujika okuwenza uhluke.

2. Osayizi be-SMD LED bachazwe: 2835 vs 5050 vs 3528

Amakhodi osayizi we-SMD LED amane nje ubude nobubanzi bephakheji ngamamilimitha: i-2835 ingu-2.8 × 3.5 mm, i-5050 ingu-5.0 × 5.0 mm, kanti i-3528 ingu-3.5 × 2.8 mm. Inombolo ikutshela indawo enyathelisiwe, kanti indawo enyathelisiwe ihlobene nokuthi iphakethe lingaphatha amandla angakanani nokuthi zingaki izidumbu. Izinhlobo ezivamile:

I-5050 ivame ukuba nama-dies amathathu (okuvumela ukuxuba imibala ye-RGB), kuyilapho i-2835 ne-3528 zivame ukuba ne-dies eyodwa, kanti i-2835 yenzelwe ukusebenza kahle emzimbeni ohlangene. Amaphakheji amakhulu anamandla amaningi asusa ukushisa okwengeziwe, okuphakamisa isidingo endleleni yokushisa yebhodi - okushukumisa ngqo ukukhetha kwe-substrate okuxoxwe ngakho ngezansi. Khetha usayizi wezidingo zakho zokukhanya, umbala, kanye nobuningi, bese uklama ibhodi ukuze ususe ukushisa elikukhiqizayo.

3. I-COB vs SMD LED: yikuphi okungcono?

Ama-LED e-SMD angama-diode ahlanganisiwe abekwe ebhodini, kuyilapho i-COB (i-chip-on-board) ihlanganisa ama-LED amaningi angenalutho ndawonye ngaphansi kwengubo eyodwa ye-phosphor ukuze kwakheke umthombo owodwa wokukhanya oqinile, ofanayo — i-COB ifanela ukukhanya okunamandla aphezulu, okungenakukhanya, i-SMD ifanela ukwakheka okuguquguqukayo, ukuxuba imibala, kanye nemiklamo ebiza kakhulu. Akukho okungcono kuyo yonke indawo; ixazulula izinkinga ezahlukene:

• SMD isakaza ama-LED ahlukile kuwo wonke amabhodi, aguquguqukayo kuma-strips, izibonisi, umbala we-RGB, kanye nemikhiqizo ehlukahlukene, futhi ngokuvamile ibiza kancane.
• I-COB Amaqoqo amaningi ayafa abe yi-emitter eyodwa, enikeza ukukhanya okuphezulu kakhulu okuvela endaweni encane enokukhanya okubushelelezi nokulinganayo — okulungele izibani ezikhanyayo, izibani eziphansi, kanye nezinto ezikhipha kakhulu.

Ngenxa yokuthi i-COB igxila ezindaweni eziningi ezincane, ukushisa kwayo kuphakeme kakhulu, okwenza i-substrate yokushisa ibe yinto ebaluleke kakhulu kune-SMD. Ukushintshana phakathi kwalawa amabili kuchazwe kulokhu kuqhathaniswa kwamabhodi e-COB LED ngokumelene ne-SMD LED , futhi womabili ekugcineni ancike ebhodini elingathwala ukushisa kwawo.

4. Kungani ama-PCB e-LED esebenzisa i-aluminium (ukuphathwa kokushisa)

Ama-PCB e-LED avame ukusebenzisa i-substrate yensimbi ye-aluminium ngoba i-aluminium iqhuba ukushisa kangcono kakhulu kune-FR-4 ejwayelekile, idonsa ukushisa kude nama-LED ukuze iwagcine epholile, ekhanya, futhi ehlala isikhathi eside. Ama-LED ayawohloka futhi ashintshe umbala uma eshisa, ngakho-ke ukuhambisa ukushisa ngaphandle kwephakheji kuyisici esibaluleke kakhulu sokuthembeka kumkhiqizo we-LED - futhi i-FR-4 iyi-conductor yokushisa empofu.

Ibhodi eliyinsimbi eliyi-core libeka i-dielectric encane phezu kwesisekelo se-aluminium, ngakho-ke ukushisa okuvela kuphedi yokushisa ye-LED ngayinye kudlula ngokushesha kungene ensimbini bese kuphuma kuye ku-heatsink noma ebiyelweni. Yingakho i- aluminium LED PCB iyindlela yokukhanyisa ezenzakalelayo, futhi kungani ukukhanya kwangaphandle nokwezimoto kuncike kakhulu kuyo - izinto okumele zisinde ekushiseni nasesimo sezulu zisebenzisa amabhodi afana ne -LED PCB yezimoto . Uma ama-LED eshisa futhi exinene, kulapho i-substrate inquma khona isikhathi sokuphila komkhiqizo, okwenza ukukhiqizwa kwe-aluminium PCB okuqaphela ukushisa kube yinto ebalulekile ekusebenzeni kwe-LED.

5. Indlela yokusonta ama-LED e-SMD ngaphandle kokuwalimaza

Ama-LED e-Solder SMD anephrofayili yokuphinda kugeleze elawulwayo kanye nevolumu yokunamathisela efanele, ngoba ama-LED azwela ukushisa nomswakama futhi onakala kalula ngokushisa okweqile noma i-joint ye-thermal-pad embi. Ukushisa ngokweqile ngesikhathi sokunamathisela kuyawohloza i-LED ngaphambi kokuba ikhanye, futhi i-joint embi kwi-thermal pad ikhubaza ukususwa kokushisa kuseseyivivinywa. Okubalulekile:

• Sebenzisa iphrofayili efanele yokugeleza kabusha. Ama-LED anomkhawulo wokushisa ophezulu kanye nomkhawulo wokuvezwa; ukuhlala ngaphakathi kwephrofayili kuvikela idayi kanye ne-phosphor.
• Hlanganisa kahle i-thermal pad. Ijoyinti lephedi liyindlela yokuphuma ekushiseni ye-LED, ngakho-ke idinga ukumanziswa kahle kanye nevolumu efanele yokunamathisela, ngokuvamile enezibani zokushisa ngaphansi kwayo.
• Ukuzwela komswakama wengqondo. Ama-LED amaningi azwela umswakama futhi adinga ukubhaka nokuphathwa kahle ngaphambi kokugeleza kabusha ukuze kugwenywe umonakalo.
• Lawula ukunamathisela emaphaketheni amancane. Izinyathelo ezincane ze-LED zivame ukujikijelwa ngamatshe futhi zivale uma ivolumu yokunamathisela kanye nebhalansi yamaphedi kuphansi.

Lezi yizilawuli zezinga lokukhiqiza, yingakho ngale kwezingxenye ezimbalwa ezibekwe ngesandla, ama-LED angaphansi komugqa wokushintshashintsha olawulwayo lapho iphrofayili, ukunamathisela, kanye nokuphathwa kulawulwa khona futhi amalunga ayahlolwa.

6. Indlela i-Highleap eyakha ngayo amabhodi e-LED athembekile

I-Highleap yakha amabhodi e-LED ku-substrate efanele yokushisa — i-aluminium metal-core yokukhanyisa okuningi, ene-FR-4 noma ezinye izinto lapho zingena khona — futhi ihlanganisa ama-LED ngenqubo yokulawula ukugeleza kabusha kanye nokuhlolwa. I-substrate ifaniswa nobuningi bamandla e-LED kanye nendawo yomkhiqizo, ngakho ukushisa kunendlela yangempela yokuphuma futhi ama-LED agcina ukukhanya kwawo nombala ngokuhamba kwesikhathi.

Ngasohlangothini lokuhlanganisa, ukubekwa kwe-LED, iphrofayili yokugeleza kabusha, ukuphathwa komswakama, kanye namajoyinti e-thermal-pad kuyalawulwa, kanti i-AOI iqinisekisa ukubekwa kanye nekhwalithi ye-solder kulo lonke ibhodi. Ngenxa yokuthi izinyathelo ze-LED kanye nemiklamo ye-thermal-pad kuthinta kakhulu isivuno, isibuyekezo sokwenziwa kwangaphambi kokwakhiwa siyawahlola kuqala. I-Highleap ihlanganisa lokhu kusukela ekugcineni kuya ekugcineni ngokuhlanganiswa kwe-turnkey , kusukela ekugijimeni kweprototype kuya kuvolumu. Uma ucela isilinganiso, yabelana ngohlobo lwe-LED nosayizi, inani lama-LED namandla aphelele, indawo yokusebenza, kanye nanoma yiziphi izidingo zokushisa noma ze-optical ukuze ibhodi kanye nenqubo kusethwe kahle.

7. Imibuzo Evame Ukubuzwa Nge-SMD LED

Zisho ukuthini izinombolo eziku-2835 noma ku-5050 LED?

Ziyizilinganiso zephakheji ngamamilimitha — i-2835 ingu-2.8 × 3.5 mm kanti i-5050 ingu-5.0 × 5.0 mm. Ikhodi ikutshela usayizi wezinyawo, ohambisana nokuphathwa kwamandla kanye nenani lama-die ngaphakathi.

Zingaki izibani ezifakwe ku-LED engu-5050?

I-5050 ivame ukuqukatha ama-LED die amathathu, okuyikho okuvumela ukuxubana kombala we-RGB noma ukukhipha okuphezulu okuhlanganisiwe kusuka kuphakheji eyodwa. Amaphakheji amancane afana no-2835 no-3528 avame ukuba ne-die eyodwa.

Kungani ama-LED ami eba mnyama noma eshintsha umbala ngokuhamba kwesikhathi?

Ngokuvamile ukushisa. Ama-LED ayawohloka futhi ashintshe umbala uma eshisa, ngakho-ke ukususwa kokushisa okubi — i-substrate enganele noma i-thermal-pad joint embi — kunciphisa impilo yawo futhi kuyawafiphaza. Indlela efanele yebhodi yokushisa iyindlela eyinhloko yokuvimbela.

Ingabe ama-LED e-SMD angathengiswa ngesandla?

Amathini ambalwa ngokucophelela, kodwa ayazwela ekushiseni nasekuswakameni futhi anezinyathelo ezincane ezivame ukuthungwa ngamatshe, futhi i-thermal pad kunzima ukuyihlanganisa kahle ngesandla. Uma kuziwa ngobuningi noma ikhwalithi, inqubo yokulawula ukugeleza kabusha ithembeke kakhulu.

Uyini umehluko phakathi kwe-chip ye-LED nephakheji ye-LED?

I-chip (idi) iyi-semiconductor engenalutho ekhipha ukukhanya; iphakheji iyindlu — eneziphetho, ilensi noma i-phosphor, futhi ngokuvamile i-thermal pad — evikela idayisi futhi iyenze ikwazi ukushintshwa. I-SMD LED iyidayi ehlanganisiwe.

Ingabe wonke amabhodi e-LED kudingeka abe yi-aluminium?

Cha — izinkomba zamandla aphansi zisebenza kahle ku-FR-4. Amabhodi ensimbi e-aluminium asetshenziswa lapho ukushisa kwe-LED kubalulekile, njengokukhanya, ngoba aqhuba ukushisa kangcono kakhulu futhi agcina ama-LED epholile, ekhanya, futhi ehlala isikhathi eside.