Namhlanje, imeko yokunyuka kweemveliso ze-elektroniki ezifuna ukwakheka kwezinto ezintathu I-PCB ye-Multilayer. Nangona kunjalo, ukuqokelelwa komaleko kuphakamisa imiba emitsha enxulumene nale mbono yoyilo. Enye yeengxaki kukufumana umgangatho ophezulu wokugcina iiprojekthi.

Ukugcwala kwePCBS kuya kusiba ngokubaluleka njengoko iisekethe eziprintiweyo ngakumbi nangakumbi ziveliswa ngeendlela ezininzi.

Uyilo olulungileyo lwe-lamination ye-PCB lubalulekile ukunciphisa imitha yeesekethe ze-PCB kunye neesekethe ezinxulumene nazo. Ngokuchasene noko, ulwakhiwo olubi lunokunyusa ngokubonakalayo imitha, eyingozi ngokwembono yokhuseleko.

Yintoni ingqokelela yePCB?

The PCB lamination layers the insulation and copper of the PCB before the final layout design is completed. Ukuphuhlisa ingqokelela efanelekileyo yinkqubo entsonkothileyo. I-PCB iqhagamshela amandla kunye nemiqondiso phakathi kwezixhobo ezibonakalayo, kunye nokubekwa ngokufanelekileyo kwezinto zebhodi ezichaphazela ngqo ukusebenza kwayo.

Kutheni PCB lamination?

Ukuphuhlisa lamination PCB kubalulekile ekuyileni iibhodi kakuhle. I-PCB lamination inezibonelelo ezininzi kuba ukwakheka kwamanqanaba amaninzi kuphucula amandla okusasaza amandla, kukhusela ekuphazanyisweni ngumbane, kuthintele ukuphazanyiswa, kwaye kuxhasa ukuhanjiswa kwesiginali esiphezulu.

Nangona eyona njongo iphambili yokufumba kukubeka iisekethi ezininzi zombane kwibhodi enye ngokusebenzisa iindlela ezininzi, ubume be-PCB stack ikwabonelela ngezinye izinto eziluncedo. La manyathelo abandakanya ukunciphisa ukuba semngciphekweni kwebhodi yesekethe kwingxolo yangaphandle kunye nokunciphisa i-crosstalk kunye neengxaki ze-impedance kwiinkqubo ezikhawulezayo.

Lamination ye-PCB elungileyo inokunceda ekuqinisekiseni iindleko ezisezantsi zokugqibela zemveliso. I-PCB lamination inokugcina ixesha kunye nemali ngokwandisa ukusebenza ngokukuko kunye nokuphucula ukuhambelana kwe-electromagnetic kuyo yonke iprojekthi.

Umthombo wefoto: pixabay

Amanqaku kunye nemithetho yoyilo lwe-PCB lamination

Inani elingaphantsi kwelingasentla

Iziteki ezilula zinokubandakanya ii-PCBS ezine, ngelixa iibhodi ezintsonkothileyo zifuna ukulandelwa ngokulandelelana kobuchwephesha. Nangona kunzima kakhulu, amanqanaba aphezulu avumela abayili indawo enkulu yokubeka ngaphandle kokunyusa umngcipheko wokudibana nezisombululo ezingenakwenzeka.

Ngokwesiqhelo, imigangatho esibhozo okanye nangaphezulu iyafuneka ukufezekisa ukubekwa kwinqanaba elifanelekileyo kunye nezithuba ukwandisa ukusebenza. Imitha inokuncitshiswa ngokusebenzisa inqwelomoya kunye nenqwelomoya yamandla kwiphaneli ye-multilayer.

Low layer

Amalungiselelo ubhedu kunye yokugquma umaleko ezenza wesekethe liquka umsebenzi zidibana PCB. Ukuthintela PCB warping, yenza icandelo umnqamlezo webhodi macala kunye nokulinganisela xa ulungelelanisa maleko. Umzekelo, kumaleko asibhozo, owesibini kunye nowesixhenxe kufanelekile ukuba afane kubukhulu ukufikelela kumgangatho ofanelekileyo.

Uluhlu lwesiginali kufuneka luhlale lusondelelene nenqwelomoya, ngelixa amandla kunye neenqwelomoya ezininzi zidityaniswe ngokuqinileyo. Kungcono ukusebenzisa iindawo ezininzi zokumisa umhlaba njengoko zihlala zinciphisa ukusasazeka kwemitha kunye nokuthintela umhlaba.

● Uhlobo lwezinto zokubeka

Ubushushu, oomatshini, kunye neempawu zombane ze-substrate nganye kunye nendlela abanxibelelana ngayo kubalulekile ekukhetheni ukhetho lwe-PCB yokukhetha izinto.

Ibhodi yesekethe ihlala iqulunqwe sisiseko esomeleleyo se-fiberglass, esibonelela ngokuqina kunye nokuqina kwePCB. Ezinye i-PCBS eziguqukayo zinokwenziwa kwiiplastiki ezinobushushu obuphezulu obuguquguqukayo.

Uluhlu lomphezulu lucwecwe olucekeceke olwenziwe ngefoyile yobhedu eqhotyoshelwe ebhodini. Ubhedu lukhona kumacala omabini e-PCB enamacala amabini, kwaye ubukhulu bobhedu buyahluka ngokwenani le-PCB.

The top of the copper foil is covered with a blocking layer to make the copper trace in contact with other metals. Le nto ibalulekile ekuncedeni abasebenzisi ukuba baphephe ukujija ii-jumpers kwindawo efanelekileyo.

Umaleko wokushicilela kwescreen usetyenzisiwe kumaleko wokumelana ne-solder ukongeza iisimboli, amanani kunye noonobumba bendibano elula kunye nokuqonda okungcono kwebhodi.

● Chonga iintambo kunye nemingxunya

Abaqulunqi kufuneka bahambise imiqondiso yesantya esiphezulu ngaphezulu komaleko ophakathi phakathi konwebu. Oku kuvumela inqwelomoya yomhlaba ukuba inikeze ikhaka eliqukethe imitha ekhutshwe kwi-orbit ngesantya esiphezulu.

Ukubekwa kwenqanaba lomqondiso kufutshane nenqanaba lenqwelomoya kuvumela ukubuyela kwangoku ukuhamba kwiiplanethi ezikufutshane, ngaloo ndlela kuncitshiswa ukubuyela kwendlela. Akukho capacitance yaneleyo phakathi konikezelo lwamandla olusondeleyo kunye nomaleko wokubonelela ukubonelela ngokudibanisa ngaphantsi kwe-500 MHz kusetyenziswa ubuchwephesha bokwakha obuqhelekileyo.

● Ukushiya izithuba phakathi kwamaleko

Njengoko amandla emithambo ehla, ukudibana okuqinileyo phakathi komqondiso kunye nokubuya kwenqwelomoya kubalulekile. Ukunikezelwa kwamandla kunye nomhlaba kufuneka udityaniswe ngokuqinileyo.

Uluhlu lweempawu kufuneka luhlale lusondele komnye nomnye nokuba zikwiindiza ezikufutshane. Ukudibanisa kunye nokudibanisa phakathi kweendlela kubalulekile ekubonakaliseni okungaphazamiseki kunye nokusebenza ngokubanzi.

siphelo

Itekhnoloji ye-lamination ye-PCB Zininzi izinto ezahlukeneyo zoyilo lwe-PCB. Xa ukubandakanyeka kwamanqanaba aliqela, indlela EMALANDELWE AMATHATHU ethathela ingqalelo ubume bangaphakathi kunye nobume bomphezulu kufuneka zidityaniswe. Ngesantya esiphezulu sokusebenza kweesekethe zale mihla, kufuneka kugcinwe ingqokelela yePCB ngenjongo yokuphucula amandla okuhambisa kunye nokunciphisa uphazamiseko. I-PCBS eyilelwe kakubi inokunciphisa ukuhanjiswa komqondiso, imveliso, ukuhanjiswa kwamandla kunye nokuthembeka kwexesha elide.