Ukukhiqizwa kwe-Ventec VT-47 PCB Kwezakhiwo Ezinethusi Elinzima Nezingqimba Eziningi Eziqinile

I-Ventec VT-47 iyisistimu ye-Z-CTE FR-4.0 ene-Tg ephezulu, ephansi enikeza abaklami izinketho ezibanzi ze-core kanye nezethusi zezendlalelo eziningi ezifuna ukushisa. I-Highleap Electronics isebenzisa i-VT-47 ekukhiqizweni kwe-PCB enethusi elisindayo lapho ibhodi lidinga khona umkhawulo wokushisa owengeziwe kune-FR-4 ejwayelekile futhi ukwakhiwa kungafaka izingxenye ezijiyile, izisindo zethusi ezixubile, izixhumi ezifanelana nokucindezela noma izendlalelo zethusi ezikhethiwe.

I-VT-47 ayiyona impendulo evamile yamabhodi kagesi. Ithusi elinzima lisadinga i-resin eyanele, izitayela zengilazi ezifanele, ukugqwala nokufaka okulawulwayo, ukusatshalaliswa kwethusi okulinganiselayo kanye nemikhawulo yokuthamba engokoqobo. Izinto zokwakha zinikeza ipulatifomu enekhono; inqubo yokuqoqa ekhishwe kanye nenqubo yokukhiqiza inquma ukuthi i-PCB eqediwe ithembekile yini.

Kungani Abathengi Becacisa I-VT-47

I-Ventec ikhomba i-VT-47 njenge-phenolic-cured, ehambisana ne-lead-free, i-Tg FR-4.0 ephezulu enokwandiswa okuphansi kwe-Z-axis, ukumelana ne-CAF kanye nokutholakala okubanzi. Ukutholakala okushicilelwe kufaka phakathi ama-cores asukela cishe ku-0.05 mm kuya ku-5 mm kanye ne-copper foil kusukela ku-1/4 oz kuya ku-12 oz. Lelo banga lenza i-VT-47 ikhange kumadizayini angalingani nokwakhiwa okuncishisiwe "okujwayelekile okungu-1 oz, 1.6 mm".

I-VT-47 incintisana ngokuguquguquka kokwakhiwa kanye nokuthembeka kokushisa, hhayi ngokuba yi-laminate elahlekelwa kakhulu. Amaphrojekthi aqhutshwa kakhulu ukulahleka kokufakwa kufanele aqale ngokukhethwa kwezinto ezisheshayo kunokukhetha i-VT-47 ye-Tg yayo.

Ithusi Elinzima, Amabhodi Aqinile kanye Nezinsika Ezincane

Umbuzo wokuqala we-resin-copper onzima

Ukuphakama okukhulu kwesinyathelo sethusi kususa i-resin ngesikhathi sokulamina. Uma ukukhetha kwe-prepreg kunganikezi ukugeleza okwanele kanye ne-resin epholile, ibhodi lingathuthukisa ukuntuleka kwe-resin, ukuvaleka, ukuvaleka okungekuhle noma ukushintshashintsha kobukhulu bendawo. I-Highleap ihlola amaphesenti ethusi ngeleveli, iziqhingi zethusi ezihlukanisiwe, ukuvuleka kwendiza kanye nesitayela sengilazi ngaphambi kokuphakamisa ukwakhiwa kwe-press.

Umhlahlandlela we-stackup wethusi osindayo uchaza ukuthi kungani ukwandisa ukubalwa kwe-prepreg kungeyona ikhambi eliphelele. I-resin eningi ithinta ukujiya okuqediwe, isikhala se-dielectric, i-impedance kanye nokuqina kobukhulu.

Isici sokusika kanye nesikhala kukhawulela umklamo

Ithusi elijiyile alikwazi ukusebenzisa izincazelo zomugqa/isikhala ezifanayo nezethusi elingu-1 oz. Ukugoba eceleni, ububanzi bomqhubi esisekelweni kanye nokumbozwa kwemaski ye-solder kumele kubuyekezwe. Imfuneko yethusi kufanele isho ithusi eliqediwe noma i-foil yokuqala kanye ne-plating, ngoba lezo azinazo izincazelo zokuthenga ezishintshaniswayo.

Ama-cores amancane adinga isu elihlukile lokuphatha

I-Ventec incoma ithusi eliphathwe ngendlela ephambene nezinsika ezincane kakhulu ngenxa yephrofayili ephansi, kuyilapho iphawula ukuguquguquka kwamandla okuxebuka. Izinsika ezincane zingathuthukisa isikhala sezingqimba kanye nobukhulu obuphelele, kodwa zandisa ukuphathwa, ukubhaliswa kanye nengozi yomonakalo. I-Highleap izoqinisekisa ukuthi insika ekhethiwe kanye nefomu lethusi kuyatholakala futhi kuyahambisana nesidingo somugqa/isikhala.

Ubunjiniyela Bokulungiselela Ukukhulelwa Nokushiswa Kwelamination

I-VT-47 stackup kufanele iveze umongo oqondile, isitayela sengilazi esilungisiwe, okuqukethwe kwe-resin, ubukhulu obucindezelwe kanye nokwelashwa ngethusi. Kumabhodi ethusi axubile, iresiphi yokucindezela kumele igcwalise i-topography yethusi ngaphandle kokudala izindawo ezicebile kakhulu nge-resin noma ukukhukhuleka kobukhulu.

Ukulingana kwethusi kanye nokuthamba kwephaneli

Izisindo zethusi ezingalingani kanye nokumbozwa kwethusi okungalingani kudala ukuncipha okuhlukile kanye nokucindezeleka ohlangothini ngalunye lwebhodi. I-Highleap ibuyekeza ukulingana kwezingqimba, ukulinganisela kwethusi kanye nokuqondiswa kwephaneli ngaphambi kokusebenzisa amathuluzi. Ukwamukelwa kokuthamba kufanele kulungele usayizi webhodi, ukujiya, uhlobo lwesixhumi kanye nenqubo yokuhlanganisa kunokuba kukopishwe kumkhiqizo ongahlobene.

Isitoreji sezinto ezibonakalayo kanye nokulawula kwangaphambili

Isimo sokulungiselela kusengaphambili sithinta ukugeleza nokuqina. Izinto kufanele zigcinwe futhi zilungiswe ngaphansi kwezidingo zamanje zomenzi, ngobunikazi bezinto kanye nokulawulwa kwesikhathi sokuphila kweshelufu. Kuma-oda aphindaphindwayo, umthombo wezinto kanye nokwakhiwa okuvunyiwe kufanele kukhiywe ukuze ukwakhiwa kamuva kungashintshi ukuziphatha kwe-resin ngaphandle kokubuyekezwa kobunjiniyela.

Ukubhoboza, Ukubeka Amapulangwe kanye Nokulawula Okulinganayo

Amabhodi aminyene akhulisa ingozi yokubhoboza kanye nokufaka iplati

Imbobo encane eqediwe ebhodini elijiyile ingadlula isilinganiso esisebenzayo ngisho noma i-laminate ngokwayo iqinile. I-Highleap ibuyekeza ububanzi bokubhoboza, ikhwalithi yokungena/yokuphuma kwamathuluzi, ukususwa kwe-smear, ukumbozwa kwethusi okungena-electro kanye nokusatshalaliswa kwephethini. Uhlelo lokwamukela lungafaka phakathi izingxenye ezincane ngobukhulu bembobo emele kanye nezindawo zethusi.

Ithusi elisindayo lishintsha ukusatshalaliswa kwamanje komzila kanye nokufakwa kweplati

Izindiza ezinkulu zethusi zingathinta ukufana kweplati kanye nokugqwala. Ukweba, ukuphanga, ukwakheka kwamaphaneli kanye nobuningi bamanje kungalungiswa ukuze kuvikelwe ukuhambisana kwesici. Uma ugesi ophezulu kuyimbangela yesidingo sethusi, umklamo kufanele futhi uhlolwe ngokumelene nokwenyuka kwezinga lokushisa lomqhubi kanye nezixhumi ze-terminal; i-Tg yezinto ezibonakalayo ayithathi indawo yobunjiniyela bomthamo wamanje.

Ukuthembeka kokufakwa kokushisa akufani nokuthembeka kokushisa

I-VT-47 ibekwe ngokumelana ne-CAF, kodwa isikhala se-conductor, umswakama, i-bias voltage, ukuhlanzeka kanye nomonakalo wokubhoboza kusabalulekile. Ilebula le-Tg ephezulu akufanele lisetshenziswe njengobufakazi bokuthi yonke i-high voltage noma umswakama ophezulu iphephile.

Ubufakazi be-PCBA Thermal Mass kanye ne-Quality

Amabhodi ethusi elisindayo kanye namakhulu adinga amandla engeziwe ngesikhathi sokugeleza kabusha, ukushiswa kwamagagasi noma ukushiswa okukhethayo. Iphrofayili kumele ishise izinqwaba ezinkulu zethusi ngenkathi ivikela izingxenye futhi igweme isikhathi esiningi ngaphezu kwe-liquidus. Amabhareli okuxhuma nama-thermal pad angadinga isu elikhethekile lokushiswa.

Uma i-Highleap inikeza i-PCBA, ikhotheshini ingafaka ukutholakala kwezingxenye, ukwakheka kwe-stencil, i-SMT, i-THT, ukushiswa kwe-selective noma kwe-wave, i-AOI, i-X-ray yamaphakheji afanele, ukuhlolwa kwe-first-article kanye nokuhlolwa kokusebenza lapho kunikezwa indlela kanye nobubanzi be-fixture. Lezi zinsizakalo zichazwe ngokwephrojekthi; akufanele zithathwe ekukhetheni i-laminate kuphela.

Isibonelo: ibhodi yamandla/yokulawula yezimboni exubile-ithusi

Ibhodi elinezingqimba eziyi-10 lingasebenzisa izindiza zamandla zangaphakathi ezingama-oz angu-4, izendlalelo zesignali ezingama-oz angu-1 kanye nethusi langaphandle elingama-oz angu-2. Umklamo kumele unikeze i-resin eyanele ye-dielectric ukugcwalisa i-topography engama-oz angu-4 ngenkathi kugcinwa ama-dielectric esignali amancane kanye nobukhulu obuphelele ngaphakathi kokubekezelelana. I-Highleap ingaphakamisa ama-plies amaningi okulungiselela, ukulinganisa ithusi noma izinguquko zesikhala. Ukutholakala kwethusi elibanzi lezinto kwenza ukwakhiwa kube nokwenzeka, kodwa umklamo wokucindezela unquma isivuno.

Ukufakwa kwe-press-fit kanye ne-connector esindayo

Amabhodi amakhulu e-VT-47 avame ukubhangqwa nezixhumi ezihambisana nokucindezela noma ezinamandla aphezulu. Ububanzi obuqediwe bembobo, ubukhulu beplati, ukwesekwa kwendawo kanye nokulandelana kokufakwa kumele kuchazwe. Ukufaka esikhundleni sesixhumi noma iphini elihambisanayo kungashintsha imfuneko yomshini noma ngabe umdwebo we-PCB ungashintshiwe.

Umngcele wokuphathwa kokushisa

I-Tg ephezulu kanye ne-CTE ephansi kuthuthukisa ukuthembeka kokushisa; akwenzi i-FR-4 ibe yi-substrate eqhuba ukushisa okuphezulu. Uma ukushisa kufanele kusuke ngokushesha kusuka kudivayisi kuye ku-chassis, cabanga ngezinhlamvu zethusi, ama-via okushisa, izakhiwo zensimbi noma i-external heat spreader. Ikhotheshini kufanele ihlukanise ithusi elithwala ugesi nezidingo zokusabalala kokushisa.

Yeka ukuthi ikhotheshini ephelele ye-VT-47 kufanele ibonise ini

Impendulo kufanele ihlonze ithusi ngesendlalelo, ukwakhiwa okuhlongozwayo kokugcwalisa i-resin, izicabango ezincane zesici, uhlelo lwembobo/lokufaka i-plating, isisekelo sokuthamba, ukuhlolwa okufakiwe kanye nezicabango zenqubo yokushisa ye-PCBA. Umsebenzi wokuhlukanisa i-microsection ongakhethayo, ukuntanta kwe-solder, i-X-ray noma umsebenzi wokuhlola ukusebenza kufanele ubekwe intengo ngokwehlukana ukuze umthengi abone ububanzi bangempela.

Ingozi yokunikezwa kanye nezinye izindlela ezivunyiwe

Ukutholakala okushicilelwe kabanzi akusho ukuthi yonke inhlanganisela ye-core/copper igcwele ngaso sonke isikhathi. Ekukhiqizweni okuhleliwe, i-Highleap ingaqinisekisa isikhathi sokuhola sezinto futhi iphakamise ukwakhiwa okunye okuvunyelwe. Izinqumo ezilinganayo kufanele zilondoloze isigaba sokushisa, ikhono lethusi, ukuziphatha kwabezindaba kanye namadokhumenti amakhasimende, hhayi nje amagama athi “high Tg.”

Izindleko, Ezinye Izindlela kanye Nokulungiselela Isilinganiso

Intengo ye-VT-47 iqhutshwa yindawo yebhodi, ukusetshenziswa kwezinto, isisindo sethusi, inani lezendlalelo, ubunzima bokucindezela, inani lokubhoboza, isikhathi sokuplata, ukuqeda ubuso kanye nezidingo zokuhlola. Ithusi elisindayo lingabusa izindleko ngesikhathi senqubo futhi likhiqize ngisho noma i-premium ye-laminate iphakathi nendawo.

Lapho okunye okungaba ngcono khona

• I-Tg FR-4 evamile inganela amabhodi alula angenasidingo sokushisa noma sethusi esidingayo.
• Imoto ene-CTE ephansi noma izinga lokuthembeka okuphezulu ingakhethwa lapho ukuvunyelwa kwamakhasimende kanye nokuqinisekiswa kwephrofayili yomsebenzi kuqhuba uhlelo.
• Izinto ezilahlekelwa kancane zifaneleka kakhulu uma ukulahlekelwa kokufakwa, hhayi isisindo sokushisa, kuyisici esivimbelayo.
• Ukwakhiwa kwe-IMS noma i-metal-core kungaba ngcono uma ukudluliselwa kokushisa ku-chassis kuyisidingo esiyinhloko. Bheka i- ukuqhathaniswa kwethusi elisindayo ne-IMS.

Uhlu lokuhlola lwe-RFQ

• Usayizi webhodi kanye nobuningi
• Inani lezingqimba kanye nobukhulu obuphelele
• Ithusi ngesendlalelo
• Umugqa/isikhala esincane
• Imbobo encane kunazo zonke eqediwe
• Izindawo ezilingana nokucindezela noma ezinomoya ophezulu
• Ukuqedwa kwendawo
• I-PCBA kanye nobubanzi bokuhlola
• Imfuneko yokuba flat
• Izidingo zesitifiketi kanye nesigaba esincane

Imibuzo Evame Ukubuzwa Ngomthengi we-VT-47

Ingabe i-VT-47 iyi-laminate yethusi elisindayo?

Luhlelo lwe-FR-4.0 olune-Tg ephezulu olunokutholakala okubanzi kwethusi olungasekela ukwakheka okukhethiwe kwethusi elinzima. Umklamo oqediwe usadinga ukugcwalisa i-resin, ukugoba, ukucwebezela kanye nokubuyekezwa kokushisa.

Ingabe i-VT-47 ingasetshenziswa ngethusi elingu-12 oz?

I-Ventec ishicilela ukutholakala kwethusi kufika ku-12 oz, kodwa ukutholakala akuvumeli ngokuzenzakalelayo yonke i-geometry yezingqimba eziningi. I-Highleap kumele ibuyekeze indawo yethusi, isikhala, ukujiya kwebhodi kanye nendlela yenqubo.

Ingabe i-VT-47 iyinto engabizi kakhulu?

Cha. Ikhethwa ngokuyinhloko ngenxa yokuthembeka kokushisa, ukunwetshwa okuphansi kwe-Z-axis kanye nokuguquguquka kokwakhiwa. Isabelomali esiqinile sokulahlekelwa ngesivinini esikhulu sidinga ukuqhathaniswa kwezinto ezihlukile.

Iyiphi indlela esheshayo yokuthola isilinganiso esingokoqobo?

Thumela imephu yethusi, inani lezingqimba, ukujiya, imigodi emincane kakhulu, ubuningi kanye nobufakazi obudingekayo. Leyo mininingwane ivimbela isilinganiso esidukisayo "sentengo ngemitha yesikwele".

Inkomba yezinto eziyinhloko: Idatha ye-Ventec VT-47 laminate/prepreg. Izibalo zomkhiqizi ziyizindinganiso ezijwayelekile zokubhekisela; sebenzisa ishidi ledatha lamanje kanye nokwakhiwa okuvunyiwe ukuze uthole imininingwane yokukhiqiza.