Bohlokoa ba Li-Stiffeners ho 2-Layer Flexible PCB Stackup

Tsebisa:

Liboto tsa potoloho tse hatisitsoeng tse feto-fetohang (PCBs) li fetotse indasteri ea lisebelisoa tsa elektroniki ka ho nolofalletsa meralo e kopaneng le e tenyetsehang. Ba fana ka melemo e mengata ho feta balekane ba bona ba thata, joalo ka taolo e phahameng ea mocheso, boima bo fokotsehileng le boholo, le ts'epo e ntlafalitsoeng. Leha ho le joalo, ha ho tluoa tabeng ea 2-layer flexible PCB stack-ups, ho kenyelletsoa ha li-stiffeners ho ba bohlokoa.Ho blog ena, re tla shebisisa hore na ke hobaneng ha li-stackups tsa PCB tse 2-layer li hloka li-stiffeners le ho buisana ka bohlokoa ba tsona ho netefatsa ts'ebetso e nepahetseng le bophelo bo bolelele.

Ithute ka li-stackup tsa PCB tse feto-fetohang:

Pele re kenella ka botebo ka bohlokoa ba li-stiffeners, re hloka pele ho ba le kutloisiso e hlakileng ea hore na sebopeho sa PCB se tenyetsehang ke eng. Flexible PCB layup e bolela tlhophiso e khethehileng ea mekhahlelo e mengata ka boto ea potoloho e tenyetsehang. Ka har'a stackup ea 2-layer, PCB e tenyetsehang e na le likarolo tse peli tsa koporo tse arohaneng ka thepa e sireletsang e fetohang (hangata polyimide).

Hobaneng ha 2-layer flexible PCB stackup e hloka stiffeners?

1. Tšehetso ea mechine:

Le leng la mabaka a mantlha a hore na ke hobane'ng ha li-stiffeners li hlokahala ho 2-layer flexible PCB stackup ke ho fana ka tšehetso ea mochini. Ho fapana le li-PCB tse thata, li-PCB tse tenyetsehang ha li na botsitso ba tlhaho. Ho eketsa li-stiffeners ho thusa ho matlafatsa sebopeho le ho thibela PCB ho kobeha kapa ho phunya nakong ea ho tšoara kapa ho kopanya. Sena se ba bohlokoa haholo ha li-PCB tse tenyetsehang li kobeha hangata kapa li mennwe.

2. Ntlafatsa botsitso:

Likhopo li bapala karolo ea bohlokoa ho ntlafatseng botsitso ba 2-layer flexible PCB stack-up. Ka ho fana ka boima ho PCB, ba thusa ho fokotsa monyetla oa mathata a bakoang ke ho sisinyeha, joalo ka resonance, e ka amang ts'ebetso ea kakaretso le ho tšepahala ha potoloho. Ho phaella moo, li-stiffeners li lumella ho lumellana hantle le ho ngolisoa nakong ea kopano, ho netefatsa boemo bo nepahetseng ba likarolo le mekhoa ea ho hokahanya.

3. Tšehetso ea likarolo:

Lebaka le leng la bohlokoa le etsang hore 2-layer flex flex PCB stackups e hloke li-stiffeners ke ho fana ka tšehetso bakeng sa likarolo. Lisebelisoa tse ngata tsa elektroniki li hloka hore likarolo tsa theknoloji ea holim'a metsi (SMT) li kenngoe ho li-PCB tse tenyetsehang. Ho ba teng ha li-stiffeners ho thusa ho qhala likhatello tsa mochini tse hlahisoang nakong ea solder, ho thibela tšenyo ea likarolo tse nepahetseng le ho netefatsa hore li tsamaisana hantle le substrate e tenyetsehang.

4. Tšireletso ho mabaka a tikoloho:

Li-PCB tse feto-fetohang hangata li sebelisoa lits'ebetsong tse pepesehileng maemo a thata a tikoloho, joalo ka mocheso o feteletseng, mongobo, kapa ho pepesehela lik'hemik'hale. Likhopo li sebetsa e le mokoallo o sireletsang, ho sireletsa lipotoloho tse pshatlehang tšenyong e ka bakoang ke mabaka ana a tikoloho. Ho phaella moo, ba thusa ho ntlafatsa tenyetsehang PCB ka kakaretso ho hanyetsa khatello ea kelello mechine le ho thibela mongobo ingress, ka tsela eo eketsa nako e telele ea eona le ho tšepahala.

5. Tsela le Botšepehi ba Lipontšo:

Ka har'a stackup ea PCB ea 2-layer flex, matšoao le mesaletsa ea matla hangata e matha karolong e ka hare ea boto ea flex. Likhopo li teng ho boloka sebaka se nepahetseng le ho thibela tšitiso ea motlakase pakeng tsa likarolo tsa koporo tse ka hare. Ntle le moo, li-stiffeners li sireletsa mats'oao a mats'oao a lebelo le holimo ho tloha crosstalk le attenuation ea mats'oao, ho netefatsa hore ho na le impedance e laoloang mme qetellong e boloka botsitso ba lets'oao la potoloho.

Ha re phethela:

Ka kakaretso, li-stiffeners ke karolo ea bohlokoa ho 2-layer flexible PCB stack-up kaha li bapala karolo ea ho fana ka tšehetso ea mechine, ho matlafatsa botsitso, ho fana ka tšehetso ea likarolo, le ho sireletsa khahlanong le maemo a tikoloho.Li sireletsa lipotoloho tse nepahetseng, li boloka botsitso ba matšoao a nepahetseng, 'me li lumella kopano e atlehileng le ts'ebetso e tšepahalang lits'ebetsong tse fapaneng. Ka ho kenyelletsa li-stiffener ho meralo e bonolo ea PCB, baenjiniere ba ka netefatsa ho tiea le ho phela halelele ha lisebelisoa tsa bona tsa elektroniki ha ba ntse ba natefeloa ke melemo ea lipotoloho tse tenyetsehang.