Prototype board pcb laba geesood ah FR4 TG140 impedance kontoroolka PCB

Looxyada wareegga ee leh impedance la kontoroolo waxay leeyihiin sifooyinka soo socda:

1. Si adag u xakamee habka wax soo saarka ee guddiga wareegga, oo ay ku jiraan xulashada alaabta, fiilooyinka daabacan, kala dheereynta lakabka, iwm, si loo hubiyo xasilloonida impedance ee wareegga;

2. Isticmaal qalabyada naqshadaynta PCB ee gaarka ah si aad u hubiso in caqabadu buuxisay shuruudaha naqshadaynta;

3. Dhammaan qaabka iyo habaynta PCB, isticmaal jidka ugu gaaban oo yaree foorarsiga si aad u hubiso xasilloonida xannibaadda;

4. Yaree is-goysyada u dhexeeya xariiqda signalka iyo xadhka korontada iyo xariiqda dhulka, oo yare is-dhaafsiga iyo faragelinta xariiqda ishaarka;

5. Isticmaal tignoolajiyada impedance-ka ee ku habboon khadka gudbinta calaamadaha xawaaraha sare si loo hubiyo nadiifnimada iyo xasilloonida calaamadda;

6. Isticmaal tignoolajiyada isku xirka interlayer si loo yareeyo buuqa isku xidha iyo shucaaca korantada;

7. Marka loo eego shuruudaha impedance ee kala duwan, dooro dhumucda lakabka ku habboon, ballaca xariiqda, kala dheereynta khadka iyo joogtada ah ee dielectric;

8. Isticmaal qalab tijaabo ah oo gaar ah si aad u sameyso tijaabada impedance ee guddiga wareegga si aad u hubiso in xaddidaadaha impedance ay buuxiyaan shuruudaha naqshadeynta.

Waa maxay sababta xakamaynta impedance caadiga ah u noqon kartaa oo kaliya 10% leexasho?

Saaxiibo badan ayaa runtii rajeynaya in xannibaadda lagu xakameyn karo 5%, xitaa waxaan maqlay shuruudaha 2.5% impedance.Dhab ahaantii, nidaamka xakamaynta impedance waa 10% leexashada, wax yar ka adag, wuxuu gaari karaa 8%, waxaa jira sababo badan:

1, leexashada alaabta saxanka lafteeda

2. leexashada Etching inta lagu jiro habaynta PCB

3. Heerka qulqulka qulqulka ee uu keeno lamination inta lagu jiro habaynta PCB

4. Xawaaraha sare, roughage dusha sare ee bireed naxaas ah, saamaynta fiber galaas PP, iyo saamaynta soo noqnoqda DF ee warbaahinta waa in ay fahmaan impedance.

Xagee loo isticmaalaa looxyada wareegyada leh shuruudaha impedance guud ahaan?

Looxyada wareegyada leh shuruudaha impedance waxaa inta badan loo isticmaalaa gudbinta signallada xawaaraha sare leh, sida gudbinta signalka dhijitaalka ah ee xawaaraha sare leh, gudbinta signalka soo noqnoqda raadiyaha iyo gudbinta signalka hirarka millimitirka.Tani waa sababta oo ah xannibaadda guddiga wareegga waxay la xiriirtaa xawaaraha gudbinta iyo xasilloonida calaamadda.Haddii naqshadeynta impedance ay tahay mid aan caqli-gal ahayn, waxay saameyn doontaa tayada gudbinta calaamadda waxayna xitaa sababi doontaa luminta calaamadaha.Sidaa darteed, waqtiyada u baahan tayada gudbinta calaamadaha sare, badanaa waa lagama maarmaan in la isticmaalo looxyada wareegga oo leh shuruudaha impedance.