placa Rigidus PCB
Tabula rigida circuitūs impressī (Printed Circuit Board) fundamentum efficit dispositiōnum electrōnicōrum modernōrum, ferēns fīdā platforma ad figendōs et intercōnectendōs componentēs electrōnicōs. Hae tabulae ex materiīs sōlidīs, nōn flēxibilibus conficiuntur, plūrimum ex aliīs strātīs materiīs substrātīs cuprō tectīs, saepissimē FR4 vītrō-epoxy. Prōcessus factiōnis trāductiōnem praeclāram cupri includit ad viās conductōrēs efficiendās, deinde applicātiōne strātūs māscae ūniōnis et strātūs silkscreen. Tabulae rīgidae excellunt in fōrnendō subsidium mechanicum et cōnnectiōnibus electricīs componentium ut circuitūs integrātī, resistōrēs, capacitōrēs, et cōnnexōrēs. Cōnstructiō eōrum rōbusta dūrabilitātem et fīdūcitiam praestantem certificat variīs conditiōnibus operātīvīs, idōnea eas reddens applicātiōnibus quae stabilitātem diūtūrnām poscunt. Hae tabulae ūnistrātās, bistrātās aut multistrātās effingī possunt, variās gradūs complexitātis circuitūs et fūnctiōnalitātis offerentēs. Possibilitātēs dēsignandī ā simplicibus tabulīs ūnilaterālibus ad strūctūrās multistrātās subtiliter intercōnnectās extenduntur. Tabulae rīgidae modernae saepe fēminās advānsātās includunt ut contrōlum impedimentōrum, viās occultās, et solūtiōnēs gestiōnis calōris, quae eōrum ūsum in applicātiōnibus altāe frequentiae et in systemātibus electrōnicīs complexīs permittunt.