I-MCPCB Ngokuklama | Izindlela Zokushisa Zobunjiniyela Zezicelo Ezinamandla Aphezulu

Isingeniso: I-MCPCB Ngokuklama Okuyisisekelo Ekulawuleni Ukushisa

Kuma -PCB e-Metal Core , ama-vias awasebenzi nje kuphela njengezixhumanisi zikagesi kodwa futhi njengezindlela ezibalulekile zokushisa, adlulisa ukushisa kusuka ezingxenyeni ezifakwe phezulu kuya ku-aluminium noma i-substrate yethusi engaphansi. Ukwakheka nokubekwa kwama-vias okushisa kuthinta ngqo amazinga okushisa e-junction kuma-LED anamandla aphezulu kanye nokusebenza okuphephile kwamamojula kagesi.

Izinhlelo zokusebenza zesimanje ezisebenza kahle kakhulu—ezifana nezibani zangaphambili zezimoto ze-LED, iziguquli zezimboni, nama-amplifiers e-RF—zincike ekuthuthukisweni okulungiselelwe ukuze kuqinisekiswe ukuphathwa okushisayo okuthembekile. I-MCPCB esebenzayo ngedizayini ibhalansi ukushabalaliswa kokushisa, ukuhlukaniswa kukagesi, nokwenza, onjiniyela bakwazi ukunweba impilo yomkhiqizo futhi balondoloze ukusebenza ngaphansi kwezimo ezinzima.

Izinhlobo ze-Vias ku-MCPCB Nge-Design Applications

I-Signal Vias

I-Signal vias ku-MCPCB ngedizayini iqinisekisa ukuxhumana okuthembekile kukagesi phakathi kwezendlalelo zesekethe ngenkathi unqamula umgoqo we-dielectric. Izinto eziwukhiye zokuklama zifaka phakathi ukunemba kobubanzi, ibanga lokuhlukanisa, nokuhambisana nezidingo zokususwa kwamandla kagesi:

• Ukulawula ububanzi - Ivamise ukuba ngu-0.2mm kuya ku-0.5mm ukuze kugcinwe ukufaniswa kwe-impedance nobuqotho besignali
• Isikhala se-insulation - Ubuncane obungu-0.25mm bezinhlelo zokusebenza ezifika ku-250V AC; 0.5mm noma ngaphezulu kuma-voltage aphezulu
• Ukuphepha kagesi - Ukususwa kanye nokufakwa kwemigqomo kuvimbela ukushoda ngesikhathi sokuhamba ngebhayisikili ezishisayo

I-Thermal Vias

Ama-vias okushisa adala izindlela zokusabalalisa ukushisa ezizinikele kusukela kuma-component pads kuya enkabeni yensimbi, okwandisa ukuhanjiswa kokushisa futhi kunciphisa izinga lokushisa lokuhlangana. Izinto okufanele uzicabangele ngokuklama zifaka phakathi usayizi, ubuningi, kanye nokubekwa:

• Nge-diameter - Inkulu kune-vias yesiginali, imvamisa ingu-0.3mm kuya ku-1.0mm
• Ngokuminyana – Amalungu afanayo aphezulu okuminyana ngaphansi kwezingxenye zamandla aphezulu athuthukisa ukudluliswa kokushisa
• Isakhiwo sohlelo - Ilungiselelwe ukufanisa ukusatshalaliswa kokushisa nokufinyelela ukumelana nokushisa okungaphansi kuka-1.5°C/W ezinhlelweni ezijwayelekile ze-LED

Izimpumputhe Nezingcwatshwa Nge-Multilayer MCPCB

I-Vis eyimpumputhe nengcwatshiwe inika amandla ukuxhumeka kwesendlalelo esikhethiwe kuma-MCPCB anezingqimba eziningi, igcina ubuqotho bendlela eshisayo kuyilapho ivumela ukuminyana okuphezulu kwengxenye. Izici eziyinhloko zedizayini zifaka:

• Uxhumano oluqondene nesendlalelo - I-Vis eyimpumputhe ixhuma izendlalelo eziphezulu kuzendlalelo zangaphakathi ngaphandle kokungena ubukhulu bebhodi eligcwele
• Ukuhlukaniswa okushisayo - Ihlukanisa umzila wesignali kumzila wokulawula okushisayo wezinhlelo zamandla eziyinkimbinkimbi
• Ukukhiqiza okunembayo - Idinga ukujula kokumba okunembile nokubhaliswa kwesendlalelo

I-Vias Egcwalisiwe noma Exhunyiwe

Ukukhethwa kwezinto zokugcwalisa ku-MCPCB ngedizayini kuthinta kakhulu ukusebenza okushisayo nokuthembeka komhlangano. Izinketho ezintathu eziyinhloko zibusa imboni:

• Ama-vias agcwele ithusi - Ubukhulu be-thermal conductivity ku-385 W/m·K buvumela ukudluliswa kokushisa okuphezulu kwezicelo zamandla amakhulu
• I-epoxy egcwele isiliva - Ukusebenza kwezindleko okulinganiselwe ku-15-60 W/m·K conductivity efanele imiklamo yamandla amaphakathi
• I-resin conductive thermally - Isixazululo esingabizi kakhulu ku-2-8 W/m·K ukuvimbela ukuxutshwa kwe-solder ngenkathi kugcinwa ukusebenza okushisayo okwamukelekayo

I-MCPCB Ebalulekile Ngokucabangela Okushisayo Okuklamayo

Nge-Diameter kanye Nokuthuthukisa Ukuminyana

Nge-diameter kanye nokuminyana kohlu ngokuhlanganyela kunquma ukuqhutshwa kokushisa okuphelele ku-MCPCB ngedizayini. Ama-vias amancane (0.3–0.4mm) asekela ukuminyana okuphezulu, kuyilapho ama-vias amakhulu (0.8mm) athuthukisa ukuqhutshwa kokushisa ngakunye kodwa anomkhawulo wokupakisha. Ukulungiselelwa okufanelekile bhalansi ukushisa ukusabalala nokwenziwayo:

• Nge-diameter encane – High-density array (100–120 vias/cm²) athuthukisa ukusatshalaliswa kokushisa okuhlangene
• Nge-diameter enkulu - Ukuminyana okuphansi (20–30 vias/cm²) kodwa okungcono ngokuqhutshwa kokukodwa
• Isibonelo - 0.4mm nge-vias ehlukaniswe ngo-1.0mm kunciphisa ukumelana nokushisa kwe-junction-to-case ngo-40-60%

Nge-Arangement kanye ne-Layout Patterns

Ukubekwa kwamaqhinga kwe-thermal vias kukhulisa ukudluliswa kokushisa ngaphansi kwezingxenye zamandla aphezulu:

• Ukuqondanisa okuqondile - I-Vias igxile ngaphansi kwamaphedi ashisayo noma ama-heat slugs
• Uhlu lwamaphethini - Ama-arrays angama-Hexagonal ahlinzeka ngokusebenza okushisayo okufika ku-15% okungcono kunamagridi angama-rectangular
• Isakhiwo esiqondene nengxenye - I-LED: 3 × 3 noma 4 × 4 amalungu afanayo; Ama-semiconductors kagesi: amaqoqo aminyene ngaphansi kwezindawo zokunamathisela okufa

Isendlalelo seDielectric Ukushuba Umthelela

Ubukhulu be-Dielectric kanye nezinto ezibonakalayo zichaza ukumelana nokushisa phakathi kwengxenye nensimbi core:

• Ukujiya okujwayelekile – 75–200μm, conductivity ezishisayo 1–3 W/m·K
• I-Premium dielectrics – I-Ceramic-egcwele, 5–8 W/m·K, izindleko eziphezulu
• Umthelela wokuklama – Ukunyuka ngakunye okungu-25μm kogqinsi kwengeza ~0.3–0.5°C/W ukumelana nokushisa; kufanele ilinganise ukuchithwa kokushisa kanye nokuhlukaniswa kukagesi, ikakhulukazi> izinhlelo zokusebenza ezingu-600V

I-MCPCB Ethuthukisiwe Ngokugcwalisa kanye Namasu Wokucwenga

I-Copper-Filled Via Implementation

Ama-vias agcwaliswe ngethusi ahlinzeka ngokusebenza okushisayo okuphezulu kakhulu ku-MCPCB ngedizayini, ene-conductivity efinyelela ku-385 W/m·K. I-Electroplating igcwalisa ngemiphongolo ngokuphelele, isuse ama-air voids anciphisa ukudluliswa kokushisa. Le ndlela ifanela izinhlelo zokusebenza ezinamandla nezinokwethenjelwa okuphezulu:

• Inzuzo eshisayo - Ithusi elingenalutho likhulisa ukuchithwa kokushisa
• Icubungula - Ukufakwa okukhethekile kwe-pulse; I-0.5mm nge-vias idinga amahora angu-3-5 ukuze igcwaliswe ngokuphelele
• Ikhwalithi yokulawula - Ukuhlolwa kwe-cross-sectional kuqinisekisa i-<5% voids; okuqukethwe okungenalutho okuphezulu kunciphisa ukusebenza ngo-15-20%

I-Conductive Epoxy ne-Resin Solutions

Ama-epoxies asebenza ngokushisa kanye nama-resin anikeza ezinye izindlela ezingabizi kakhulu ze-MCPCB yamandla amaphakathi ngezinhlelo zokusebenza zokuklama:

• I-epoxy elayishwe ngesiliva - 15-60 W / m · K, ukunamathela okuhle kakhulu nokumelana nomjikelezo oshisayo
• Izinhlanganisela ezigcwele i-aluminium – 3–10 W/m·K, ifanele umthengi kagesi
• Ama-resin agcwele i-Ceramic – 2–5 W/m·K, ivikela ugesi ekusetshenzisweni okubalulekile kokuhlukaniswa

Lezi zinto zivimbela i-solder wicking futhi zivumela ngokushesha ngokugcwalisa ngokuphrinta isikrini, ukunciphisa isikhathi sokukhiqiza uma kuqhathaniswa ne-electroplating yethusi.

Nge-Surface Treatments kanye ne-Capping

Ukwelapha okungaphezulu kuthuthukisa ukwethembeka komhlangano ngenkathi kugcinwa ukusebenza okushisayo ku-MCPCB ngedizayini:

• I-solder mask tenting - Ivimbela ukungena kwe-solder; ukujiya kwemaski ≤20μm ukukhawulela ukungezwani okushisayo okungeziwe
• Ifakwe ngamakepisi - I-ENIG noma ukucwiliswa kwesiliva kokucwiliswa kuhlinzeka ngezindawo ezithengiswayo ngenkathi kufakwa uphawu; ukujiya okujwayelekile okungu-3–5μm
• I-plating ekhethiwe - Igcina i-vias eshisayo ivulekile uma ukugcwaliswa kwangemva komhlangano kuyadingeka, kuyilapho ivikela isignali nge-vis

I-MCPCB Elungiselelwe Ngokusebenzisa Amasu Okusebenzisa Idizayini

Ukuphatha okushisayo okusebenzayo ku-MCPCB ngedizayini kudinga ukwakheka okudidiyelwe, ukulingisa, nokuhlelwa kokukhiqiza. Amasu okusebenzisa abalulekile ahlanganisa:

• I-Thermal ngokubeka - Amalungu afanayo aphezulu abekwe ngokuqondile ngaphansi kwezingxenye zamandla, anwebeka ngo-2-3mm ngaphezu kwezinhlaka zengxenye ukuthuthukisa ukusakazeka kokushisa okuhlangene
• Ukulingisa okushisayo - Qinisekisa amazinga okushisa okuhlangana, ngokusebenzisa ukumelana nokushisa, kanye nokumelana nokusabalalisa kwe-substrate ngaphambi kokukhiqiza; kuhloswe okungenani okungu-25°C ngaphansi kwezilinganiso eziphezulu zokuthembeka
• Izithiyo zokukhiqiza - Ukubhola ngomshini kusekela izimbobo ezincane ezingu-0.2mm; I-laser drilling inika amandla ama-microvias angu-0.1mm kuma-ultra-dense arrays
• Ukucatshangelwa kwesilinganiso - Isilinganiso sokujula kwe-Drill-to-diameter ≤10:1 sokufaka okuthembekile; igcwaliswe nge-vias ngokuvamile i-<1:1 ukuze uqinisekise i-electroplating engenalutho

Ukukhiqiza Okuncomekayo Nokuthembeka ku-MCPCB Ngokuklama

Ukukhethwa kwendlela yokubhoboza kuthinta ikhwalithi kanye nezindleko ze-PCB yensimbi eyinhloko ngokusebenzisa umklamo. Ukubhoboza ngomshini kunikeza ikhwalithi ehambisanayo yemigodi yobubanzi obungaphezu kuka-0.25mm, ngokunemba kwendawo ngaphakathi kuka-±0.05mm. Lokhu kunemba kuhambisana nezinhlelo zokusebenza eziningi zokuphathwa kokushisa lapho ukubekezelelana kokubekwa kuhambisana namakhono ajwayelekile okukhiqiza i-PCB.

I-Laser drilling idlula i-MCCBB enobukhulu obuphezulu ngokusebenzisa izigaba zedizayini ezinezimbobo ezingaphansi kobubanzi obungu-0.2mm. Amasistimu we-laser we-UV anciphisa izindawo ezithinteke ukushisa zibe ngaphansi kuka-20μm, avimbele ukuwohloka kwe-dielectric. Ama-laser e-CO₂ anikeza ukucubungula okusheshayo kodwa adinga ukulawulwa kwepharamitha ngokucophelela ukuze kuvinjwe i-carbonization ngokweqile.

I-Thermal Cycling nokuhlolwa kokwethembeka

Ukuthembeka kokuhamba ngebhayisikili okushisayo ku-MCPCB ngokuklama kuncike kakhulu ekuthembekeni kwesakhiwo kanye nekhwalithi yokugcwalisa. Izici ezibalulekile ezithinta ukusebenza kwesikhathi eside zifaka:

• Ukuphathwa kokungafani kwe-CTE - I-Copper (17 ppm/°C) iqhathaniswa ne-aluminium substrate (23 ppm/°C) idala ukucindezeleka okujikelezayo okudinga okufanele ngomklamo
• Ngokuqina kodonga - Ubuncane be-copper plating obungu-20μm bumelana nohambo olushisayo oluphindaphindiwe ngaphandle kokuqhekeka komgqomo
• Gcwalisa ubuqotho bezinto ezibonakalayo - I-Vis egcwaliswe kahle isabalalisa izingcindezi ngokuphumelelayo kune-vias eyize, inweba impilo yonke ngo-2-3×

Ukuqinisekiswa kwekhwalithi ngokuhlola okuzenzakalelayo kuqinisekisa i-MCPCB efanele ngokusebenzisa idizayini. Ukuhlaziywa kwe-cross-sectional kuqinisekisa ukugcwaliseka kokugcwalisa kanye nokufana kwe-plating. Izilinganiso zokumelana nokushisa kusetshenziswa ukuhlaziya okushisayo kwesikhashana ziqinisekisa amabhodi akhiqiziwe ahlangabezana nezicaciso.

Isiphetho: Ukwenza kahle kakhulu ku-MCPCB Ngokuklama Ukuphathwa Okushisayo

Idizayini ye-MCPCB ibalulekile ekuphathweni okuphumelelayo kokushisa kuma-elekthronikhi anamandla aphezulu. Ama-via okushisa asayizi ofanele, abekwe kahle, futhi agcwele adala izindlela zokumelana okuphansi ezigcina amazinga okushisa ezingxenyeni ngaphakathi kwemingcele ephephile, okwenza kube nokuqina kwamandla aphezulu kanye nokuthembeka kwesikhathi eside. Izinto ezithuthukisiwe, ukukhiqizwa okunembile kwe-MCPCB , kanye nokulingisa ukushisa kuthuthuka kakhulu ngokusebenza, okwenza imiklamo elungiselelwe ibe yinto ebalulekile ekusetshenzisweni kusukela kuma-LED ezimoto kuya kwingqalasizinda ye-5G.

Amakhono we-Highleap Electronics ku-MCPCB Ngedizayini:

• Ukunemba ngokubhola - Ukugaya ngomshini kanye ne-laser kuma-microvias nama-high-density arrays
• Ngezixazululo zokugcwalisa - I-Copper, i-epoxy egcwele isiliva, kanye nezinketho ze-resin conductive thermally ekusebenzeni okushisayo okuhambisanayo
• Ukwelashwa komhlaba kanye nokucwenga - I-ENIG, isiliva lokucwiliswa, kanye ne-solder mask tenting ukuqinisekisa ukwethembeka kanye nekhwalithi yomhlangano
• Usekelo lwedizayini nokuqinisekisa okushisayo - Ukusebenzisana kusakhiwo, ngokubeka, kanye nokulingisa okushisayo ukuze kuthuthukiswe ukuchithwa kokushisa

Konjiniyela abafuna i-MCPCB ethuthukisiwe ngokusebenzisa izixazululo zokuklama, i-Highleap Electronics inikeza ukusekelwa kokuphela kusukela kumqondo kuya ekukhiqizweni, iqinisekisa ukuthi izinhlelo zakho zokusebenza zamandla aphezulu zithola ukusebenza okushisayo okuthembekile ngekhwalithi yokukhiqiza yochwepheshe.