Waa maxay sababta looxa wareegga daabacan ma u baahan tahay xakamaynta impedance?

Xariiqda calaamadda gudbinta ee aaladda elektiroonigga ah, iska caabbinta ay la kulanto marka signalka-soo noqnoqda sare ama hirarka korantada ee fidinta waxaa loo yaqaan impedance.Waa maxay sababta looxyada PCB ay u noqdaan kuwo aan is adkeyn inta lagu jiro habka wax soo saarka ee warshadda guddiga wareegta?Aynu ku falanqeyno 4 sababood oo kala ah:

1. The guddiga wareegga PCB ee warshadda guddiga wareegga waa in ay tixgeliyaan ku xiridda iyo rakibidda qaybaha elektarooniga ah, iyo xiriirka dambe ee SMT patch sidoo kale wuxuu u baahan yahay in uu tixgeliyo arrimaha ay ka mid yihiin dhaqdhaqaaqa iyo gudbinta calaamadaha, markaa hoos u dhigista cilladaha, ayaa ka sii fiican.

3. Daasadda daasadda ah ee looxyada wareegga pcb ayaa ah kuwa ugu nugul dhibaatooyinka soo saarista guddiga wareegga oo dhan, waana xiriirka muhiimka ah ee saameeya xannibaadda;ciladdeeda ugu weyn waa oksaydhism fudud ama deliquescence, alxanka liidata, samaynta guddiga wareegga adag tahay in la iibiyo iyo impedance xad-dhaaf ah.Sare, taasoo keentay hab-dhaqan liidata ama xasillooni la'aanta waxqabadka guud ee guddiga.

4. Kirishbooyada ku jira guddiga wareegga PCB ee warshadda guddiga wareegtadu waxay gudbinayaan calaamado kala duwan.Wareegga laftiisa ayaa bedeli doona qiimaha impedance sababtoo ah etching, dhumucdiisuna waxay tahay, ballaca fiilada iyo arrimo kale, taas oo keeni doonta calaamad muujinaysa in la leexiyo oo u horseedda guddiga wareegga.Waxqabadku hoos buu u dhacayaa, markaa waxaad u baahan tahay inaad xakamayso qiimaha impedance gudaha xad gaar ah

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