Kukho iintlobo ezininzi ze-PCB ngokusebenzisa imingxunya, kwaye imingxuma eyahlukeneyo inokukhethwa ngokweemfuno ezahlukeneyo zesicelo kunye neemfuno zoyilo. Oku kulandelayo kuya kuchaza ukuvuleka kwePCB ezininzi eziqhelekileyo kwimingxuma kunye nomahluko phakathi kwePCB ngemingxuma.
一, uhlobo lokuvula lwe-PCB ngomngxuma
1. I-aperture esemgangathweni (i-PCB Standard Hole) : Ngokuqhelekileyo kuyilo lwe-PCB, umngxuma ojikelezayo kunye ne-aperture enkulu okanye elingana ne-0.4mm ibizwa ngokuba yi-standard aperture. Lo mngxunya uqhele ukusetyenziselwa ukukhusela ibhodi yePCB kunye noqhagamshelo lwesikhonkwane secandelo.
2. Umngxuma wokuvula umngxuma omncinane: Umngxuma omncinane ubhekiselele kumngxuma osisangqa nobubanzi obungaphantsi kwe-0.4mm. Ngokunyuka kwe-miniaturization yezixhobo zombane, kukho imfuno ephezulu yoyilo lwe-PCB, ke imikrolo ye-micropore iya ithandwa. Izicelo ze-microaperture zibandakanya izixhobo zombane ezincinci ezifana neelaptops kunye neeselfowuni.
3. I-Treaded Hole (I-Treaded Hole) : imingxuma edibeneyo ifakwe kwimingxuma, ngokuqhelekileyo isetyenziselwa ukufaka amacandelo kunye ne-interfaces ene-threaded, njengezixhumi okanye i-heat sinks.
二、umahluko phakathi kwePCB ngomngxuma kunye nomngxuma
PCB ngomngxuma kunye ngomngxuma zahlukile ekusebenziseni ibhodi PCB, kukho ikakhulu le yantlukwano zilandelayo:
1. INjongo yoYilo lwePCB: imingxunya ye-PCB yimingxuma egcinwe ngabom kuyilo, kwaye iya kucutshungulwa ukuze idibanise iileya ezimbini zePCB. Ngokusebenzisa imingxuma yenzelwe ukudibanisa umaleko othile okanye icandelo, kwaye indawo yazo imiselwe ngokweemfuno zoyilo.
I-2, i-Signal Connection (uQhagamshelwano lweSignali) : I-PCB ngomngxuma i-pin yesignali ukusuka kwelinye inqanaba ukuya kwelinye umaleko ukufezekisa ukuhanjiswa kwesignali. Ngemingxuma zisetyenziswa ikakhulu ukulungisa iibhodi PCB kunye namacandelo kunye nokubonelela ngenkxaso ngoomatshini.
3. Inkqubo yokuvelisa: Imingxuma ye-PCB iya kunyangwa ngezixhobo ezikhethekileyo kunye nezixhobo ngexesha lokuvelisa, ngokuqhelekileyo nge-electroplating ukunyusa umbane wombane. Umngxuma wokutyhutyha ulula ngokwentelekiso, ngokuqhelekileyo ufuna kuphela umatshini wokucoca umngxuma kwindawo ehambelanayo.
4. Inkxaso yoLwakhiwo: Ubukho bemingxunya ye-PCB inokunyusa ukuzinza kwesakhiwo kunye nokuqina kwebhodi ye-PCB, kwaye idlale indima exhasayo. Nangona umngxuma wokutyhutyha unokunyusa umgangatho othile wokuqina, eyona njongo yawo kukubonelela ngemisebenzi ezinzileyo neqhagamshelweyo.
Isishwankathelo, i-aperture ye-PCB ngomngxuma ibandakanya i-aperture eqhelekileyo, i-microaperture kunye ne-threaded hole. Umahluko phakathi kwe-PCB ngokusebenzisa imingxuma kunye nemingxuma ibonakala ikakhulu kwinjongo yoyilo, ukudibanisa umqondiso, iteknoloji yokucubungula kunye nenkxaso yesakhiwo. Uyilo olwahlukileyo lwePCB kunye neemfuno zendibano zinokuhlangatyezwana nazo ngokukhetha iindidi zokuvula ezahlukeneyo kunye nokusebenzisa imingxuma efanelekileyo okanye imingxuma.
