Amakhono okukhiqiza e-PCB athuthukisiwe, agxile ezintweni ezinembile kakhulu, ezinzima kakhulu, nezikhethekile, akhonza izimboni ezifana nocwaningo lwesayensi, i-RF, ezempi, ezokwelapha, amarobhothi, kanye ne-AI.
I-PCB ye-Aluminium
Iyini i-Aluminium PCB?
Isendlalelo sesakhiwo | Izinto ezivamile | Umsebenzi oyinhloko |
Isendlalelo sesekethe | I-foil yethusi ye-electrolytic esukela ku-18 kuya ku-140μm | Yenza amasekethe futhi uthwale ukushisela izingxenye |
Isendlalelo sokuvikela | I-epoxy resin/i-ceramic filling adhesive eqhuba ukushisa | Ukuhlukaniswa kokushisa + ukuqhutshwa kokushisa (ukuqhutshwa kokushisa 0.8-8W/m · K) |
Isendlalelo sesisekelo sensimbi | Ingxubevange ye-aluminium (ikakhulukazi 6061/5052) | Isisekelo sokushabalalisa ukushisa sihlakaza ngokushesha ukushisa okuqhutshwa ungqimba lokufaka ukushisa |
Izimo eziyinhloko zohlelo lokusebenza
Ukukhanya kwe-LED: Ama-LED bead (ikakhulukazi ama-LED anamandla amakhulu) akhiqiza ukushisa okugxilile.
Izisekelo ze-aluminium ziyizisekelo eziyinhloko zezibani zasemgwaqweni, izibani zokukhanyisa, kanye nezibani zamaphaneli, ezingagcina ukuphakama kwezinga lokushisa kwama-bead kusendaweni ephephile.
① Amandla kagesi:
Amamojula kagesi (ama-MOSFET, ama-IGBT) ama-adapter kagesi, ama-frequency converter, kanye nama-inverter kudingeka asuse ukushisa ngokushesha ukuze avimbele ukusha kwezingxenye.
② Izinto zikagesi zezimoto:
Izibani ze-LED ezisebhodini, izilawuli zamandla egumbini lenjini, amabhodi omshayeli wezimoto ezintsha zamandla;
③ Imishini yomsindo:
amabhodi e-power amplifier, amamojula wamandla omsindo, okunciphisa ukuphazamiseka kwekhwalithi yomsindo okubangelwa ukukhiqizwa kokushisa.
Izici eziyinhloko
▶Ukushabalalisa ukushisa okuphezulu kakhulu:
Ukushisa kwensimbi kwamapuleti e-aluminium kungadlulisela ngokushesha ukushisa okukhiqizwa yizingxenye (njenge-LED, ama-transistors kagesi) esakhiweni sangaphandle sokusabalalisa ukushisa, kunciphisa kakhulu ukuphakama kwezinga lokushisa kwezingxenye futhi kwandise impilo yazo yenkonzo.
▶Amandla alula + aphezulu omshini:
Ubuningi be-aluminium alloy buphansi kakhulu kunobethusi nensimbi, futhi ukumelana kwayo nokugoba kanye nokumelana nomthelela kuphakeme kunokwe-PCBS evamile, okwenza ifaneleke kumadivayisi aphathekayo nafakwe emotweni.
▶ Ukuzinza okuhle kobukhulu:
I-coefficient of thermal expansion (CTE) ye-aluminium alloy ingalinganiswa nezingxenye, okunciphisa ukugoba kanye nokuqhekeka kwamalunga e-solder okubangelwa ukushintsha kwezinga lokushisa.
▶Ukuphepha kokufakwa kokushisa:
Isendlalelo sokuvikela singamelana ne-voltage ephezulu (i-voltage evamile yokumelana ≥3000V AC), sivimbele izifunda ezimfushane phakathi kwesifunda nepuleti le-aluminium.
Amaphuzu abalulekile okuklama nokukhiqiza
-
Izinto okufanele uzicabangele ngokuklama
Ama-heat dissipation pads kudingeka axhumane ngokuphelele ne-aluminium plate: ngaphansi kwama-heat pads amadivayisi anamandla amakhulu, "ama-heat-conducting pads" kufanele aklanywe futhi axhunywe ohlangothini lwe-aluminium plate ngama-metallic vias (≥0.3mm) ukuze kuthuthukiswe ukushabalaliswa kokushisa.
Ububanzi bomugqa: Ama-substrate e-aluminium asetshenziswa kakhulu ezimweni zamandla aphezulu. Ububanzi bomugqa kufanele buklanywe ngokwe-"1A current ehambisana nobubanzi bomugqa ongu-0.3mm (ubukhulu bethusi obungu-35μm)" ukuze kugwenywe ukukhiqizwa kokushisa.
Gwema ama-burrs ngesikhathi sokusika ipuleti le-aluminium: Ama-burrs emaphethelweni amapuleti e-aluminium angabhoboza kalula ungqimba lokuvikela, ngakho-ke kudingeka ukwelashwa nge-chamfering (≥0.5mm). -
Inqubo yokukhiqiza
Ukubopha ungqimba lokuvala: Kudingeka ukubopha okushisa okuphezulu kanye nokucindezela okuphezulu (180℃/3MPa) ukuqinisekisa ukuthi ungqimba lokuvikela alunamabhamuza futhi amandla e-peel angama-≥1.0N/mm.
Ukwelashwa kwendawo: Kukhethwa kakhulu ukugoqa nge-tin/nickel-gold, kanti i-OSP (ifilimu ephilayo inokumelana nokushisa okubi) kufanele igwenywe.
Indlela yokwakha: Ukugaya kwe-CNC kwamukelwa (esikhundleni sokusika nge-die-cutting kuma-PCBS ajwayelekile) ukuqinisekisa ukuthi imiphetho yepuleti le-aluminium iyathamba.
Thumela umbuzo
incazelo2