Kuyaziwa ukuba eyona nto ibalaseleyo yeebhodi zeesekethe kukuvumela ukwakheka kweesekethe ezintsonkothileyo kwiZithuba ezinyanzelweyo. Nangona kunjalo, xa kufikwa kwi-OEM PCBA (umvelisi wezixhobo zokuqala eziprintiweyo zebhodi yeNdibano) uyilo, i-impedance elawulwa ngokukodwa, iinjineli kufuneka zoyise imida emininzi kunye nemingeni. Okulandelayo, eli nqaku liza kutyhila imida yokuyila i-Rigid-Flex PCB ene-impedance elawulwayo.
I-Rigid-Flex PCB Design
I-Rigid-Flex PCBs yi-hybrid yeebhodi zeesekethe eziqinileyo kunye neziguquguqukayo, ezidibanisa zombini ubuchwepheshe kwiyunithi enye. Le ndlela yoyilo ivumela ukuguquguquka okukhulu kwizicelo apho indawo iphezulu, njengezixhobo zonyango, i-aerospace, kunye ne-electronics yabathengi. Ukukwazi ukugoba kunye nokusonga i-PCB ngaphandle kokulahla ingqibelelo yayo luncedo olubalulekileyo. Nangona kunjalo, olu bhetyebhetye luza nemiceli mngeni yalo, ngakumbi xa kuziwa kulawulo lwe-impedance.
IiMpedance iimfuno zeRigid-Flex PCBs
Ulawulo lwe-impedance lubalulekile kwi-high-speed digital digital and RF (Radio Frequency) izicelo. I-impedance ye-PCB ichaphazela imfezeko yomqondiso, nto leyo inokukhokelela kwimiba efana nokulahleka komqondiso, ukubonakaliswa, kunye nokudibana. Kwi-Rigid-Flex PCBs, ukugcina i-impedance engaguqukiyo kulo lonke uyilo kubalulekile ukuqinisekisa ukusebenza kakuhle.
Ngokuqhelekileyo, uluhlu lwe-impedance ye-Rigid-Flex PCBs luchazwe phakathi kwe-50 ohms kunye ne-75 ohms, kuxhomekeke kwisicelo. Nangona kunjalo, ukufezekisa oku kuthintelwa kulawulwa kunokuba ngumngeni ngenxa yeempawu ezizodwa zoyilo lweRigid-Flex. Izinto ezisetyenzisiweyo, ubukhulu bemigangatho, kunye neempawu ze-dielectric zonke zidlala indima ebalulekileyo ekumiseleni i-impedance.
Unyino lwe-Rigid-Flex PCB Stack-Up
Omnye weyona mida iphambili ekuyileni iiRigid-Flex PCBs kunye ne-impedance elawulwayo kukucwangciswa kwe-stack-up. I-stack-up ibhekiselele kulungiselelo lweeleya kwi-PCB, ezinokubandakanya iileya zobhedu, imathiriyeli ye-dielectric, kunye neeleya zokuncamathelisa. Kuyilo lwe-Rigid-Flex, i-stack-up kufuneka ifake zombini amacandelo aqinileyo kunye aguquguqukayo, anokuthi ayenze nzima inkqubo yokulawula i-impedance.
1. Imiqobo yezinto eziphathekayo
Izinto ezisetyenziswa kwiiRigid-Flex PCB zinokuchaphazela kakhulu ukungasebenzi. Izinto eziguquguqukayo zihlala zineendlela ezahlukeneyo zedielectric xa kuthelekiswa nezinto eziqinileyo. Oku kungafani kunokukhokelela kwiiyantlukwano kwi-impedance ekunzima ukuyilawula. Ukongeza, ukhetho lwezinto ezinokuchaphazela ukusebenza ngokubanzi kwePCB, kubandakanya ukuzinza kwe-thermal kunye namandla omatshini.
2. Ukuguquguquka koButyebi boMaleko
Ubukhulu bomaleko kwi-Rigid-Flex PCB inokwahluka kakhulu phakathi kwamacandelo aqinileyo naguquguqukayo. Oku kuhlukahluka kunokudala imingeni ekugcineni i-impedance engaguqukiyo kuyo yonke ibhodi. Iinjineli kufuneka zibale ngocoselelo ubukhulu bomaleko ngamnye ukuqinisekisa ukuba i-impedance ihlala ngaphakathi koluhlu oluchaziweyo.
3. Bend Radius ukuqwalaselwa
Iradiyasi egobileyo yeRigid-Flex PCB yenye into ebalulekileyo enokuchaphazela i-impedance. Xa i-PCB igobile, izinto ze-dielectric zinokucinezela okanye zolule, ziguqule iimpawu zokuphazamiseka. Abaqulunqi kufuneka baphendule kwi-radius ye-bend kwizibalo zabo ukuqinisekisa ukuba i-impedance ihlala izinzile ngexesha lokusebenza.
4. Ukunyamezelwa kokwenziwa kwemveliso
Ukunyamezelwa kokwenziwa kwemveliso kunokubangela imiceli mngeni ekufezekiseni i-impedance kwiRigid-Flex PCBs. Ukwahluka kwenkqubo yokuvelisa kunokukhokelela ekungahambelani kobunzima bomaleko, iipropathi zezinto eziphathekayo, kunye nemilinganiselo yonke. Oku kungahambelani kunokubangela ukungahambi kakuhle kwe-impedance enokuthi ithobe ingqibelelo yomqondiso.
5. Uvavanyo kunye nokuqinisekiswa
Ukuvavanya ii-PCB ze-Rigid-Flex ze-impedance elawulwayo kunokuba nzima ngakumbi kunee-PCB zendabuko eziqinileyo okanye eziguquguqukayo. Izixhobo ezikhethekileyo kunye nobuchule bunokufuneka ukulinganisa ngokuchanekileyo i-impedance kuwo wonke amacandelo ahlukeneyo ebhodi. Olu bunzima bongezelelweyo lunokwandisa ixesha kunye neendleko ezinxulumene noyilo kunye nenkqubo yokuvelisa.
Ixesha lokuposa: Oct-28-2024
Emva
