Ukukhetha i-Perfect Rigid-Flex Circuit Stackup: IsiKhokelo esiBanzi

Kule bhlog, siza kuxoxa ngezinto eziphambili ekufuneka ziqwalaselwe xa ukhetha indawo efanelekileyo yokupakishwa kweebhodi zesekethe eziqinileyo.

Ehlabathini leebhodi zeesekethe eziprintiweyo (PCBs), kukho iindidi ezininzi ezihambelana neemfuno kunye neemfuno ezahlukeneyo. Olunye uhlobo oluye lwathandwa kakhulu kwiminyaka yakutshanje yibhodi yesekethe engqongqo. Ezi bhodi zibonelela ngamacandelo amabini aguquguqukayo kwaye aqinile, avumela inzuzo edibeneyo yokuguquguquka nokuzinza. Nangona kunjalo, xa uyila iibhodi zesekethe eziqinileyo, inkalo ephambili efuna uqwalaselo olucokisekileyo kukukhetha isitaki esifanelekileyo seendawo eziguqukayo.

Ukupakishwa kwendawo yeFlex kubhekiselele kulungiselelo lweeleya kwinxalenye eguquguqukayo yebhodi yesekethe engqongqo. Idlala indima ebalulekileyo ekuqinisekiseni ukusebenza ngokubanzi kunye nokuthembeka kwebhodi enye. Ukukhetha i-stackup efanelekileyo kufuna ukuqonda ngokucokisekileyo kwesicelo esithile sebhodi, izinto ezisetyenzisiweyo, kunye neempawu zokusebenza ezifunekayo.

1. Qonda iimfuno zokuguquguquka:

Isinyathelo sokuqala ekukhetheni i-flexible area layup kukuba ube nokuqonda okucacileyo kweemfuno zokuguquguquka kwebhodi. Cinga ngesicelo esicetywayo kunye nokunyakaza okanye ukugoba ibhodi kunokufuna ukunyamezela ngexesha lokusebenza. Oku kuya kukunceda uqonde inani leeleya eziguquguqukayo kunye nezixhobo ezithile onokuthi uzisebenzise.

2. Hlalutya umqondiso kunye nokuthembeka kwamandla:

Umqondiso kunye nokunyaniseka kwamandla zizinto ezibalulekileyo zoyilo lwebhodi yesekethe. Kwiibhodi eziguquguqukayo, ukupakishwa kweendawo eziguquguqukayo kunokuchaphazela kakhulu umqondiso kunye nokunyaniseka kokuhanjiswa kwamandla. Hlalutya iimfuno zesignali yoyilo lwakho olunesantya esiphezulu, ulawulo lwe-impedance, kunye neemfuno zokuhambisa amandla. Oku kuya kukunceda unqume ulungelelwaniso olufanelekileyo lwesiginali, umhlaba, kunye neenqwelomoya zamandla kwindawo eguquguqukayo.

3. Vavanya iimpawu zemathiriyeli:

Ukukhethwa kwezixhobo ze-laminate yendawo eguquguqukayo kubalulekile ekufezekiseni iimpawu zokusebenza ezifunwayo. Izixhobo ezahlukeneyo zibonisa amanqanaba ahlukeneyo okuguquguquka, ukuqina, kunye neempawu ze-dielectric. Qwalasela izixhobo ezifana ne-polyimide, i-liquid crystal polymer, kunye ne-solder mask eguquguqukayo. Vavanya iipropathi zabo zoomatshini kunye nezombane ukuhlangabezana neemfuno zakho.

4. Qwalasela iimeko zokusingqongileyo nezithembekileyo:

Xa ukhetha i-stack yendawo eguquguqukayo, iimeko zokusingqongileyo apho iibhodi zeesekethe eziqinileyo ziya kusebenza kufuneka ziqwalaselwe. Izinto ezinjengokutshintsha kweqondo lokushisa, ukufuma, kunye nokuvezwa kweekhemikhali okanye ukungcangcazela kunokuchaphazela ukusebenza kwebhodi yesekethe kunye nokuthembeka. Khetha izixhobo kunye nokucwangciswa kwe-layup enokumelana nale miqathango ukuqinisekisa ukuthembeka kwexesha elide.

5. Sebenza nomenzi wePCB yakho:

Ngelixa unokuba nombono olungileyo ngeemfuno zakho zoyilo, ukusebenza nomenzi wePCB yakho kubalulekile ekukhetheni ngempumelelo indawo elungeleleneyo yokupakishwa. Banobuchule kunye namava okusebenza kunye neebhodi zeesekethe eziguquguqukayo kwaye banokubonelela ngengqiqo ebalulekileyo kunye neengcebiso. Sebenza ngokusondeleyo kunye nabo ukuqinisekisa ukuba iinjongo zakho zoyilo zihambelana nokuba nokwenzeka kokuvelisa.

Gcina ukhumbula ukuba yonke ibhodi yoyilo lwebhodi yesekethe engqongqo yodwa, kwaye akukho ndlela-nye ilingana nayo yonke indlela yokukhetha indawo efanelekileyo ye-flex stackup. Kufuna uhlalutyo olucokisekileyo, kuqwalaselwe iinkalo ezahlukeneyo, kunye nentsebenziswano neengcali kulo mmandla. Ukuthatha ixesha lokwenza ukhetho olufanelekileyo kuya kubangela ukusebenza okuphezulu, okuthembekileyo, kunye nokuqina kwebhodi yesekethe ye-flex.

Isishwankathelo

Ukukhetha i-stackup yendawo ye-flex echanekileyo yebhodi yesekethe ye-rigid-flex ibalulekile ekusebenzeni kwayo jikelele kunye nokuthembeka. Ukuqonda iimfuno zokuguquguquka, ukuhlalutya umqondiso kunye nokunyaniseka kwamandla, ukuvavanya iimpawu zezinto eziphathekayo, ukuqwalasela iimeko zokusingqongileyo, kunye nokusebenza nomenzi we-PCB ngamanyathelo abalulekileyo kwinkqubo yokhetho. Ngokulandela ezi zikhokelo, unokuqinisekisa impumelelo yokuyila ibhodi yesekethe engqongqo-flex ehlangabezana neemfuno zakho kunye neemfuno.