PCB kwamitocin hannu etching tsari, wanda ke amfani da matakai na kayan aikin gargajiya don lalata wuraren da ba shi da kariya. Irin kamar tono wani maɓuɓɓugar, mai sauƙin sauƙi.

A cikin aiwatar da aiki, an raba shi zuwa ingantaccen tsari na fim da tsari mara kyau mara kyau. Tsarin fim mai kyau yana amfani da madaidaicin katako don kare canjin, da kuma tsari mara kyau na amfani da busassun fim ko fim mai rigar don kare da'irar. A gefuna layin ko pads sune misshapen tare da gargajiyauntucniHanyoyi. Duk lokacin da aka ƙara layin da 0.0254mm, gefen zai karkata zuwa wani lokaci. Don tabbatar da isasshen bayanan rarrabuwa, ana auna gibin waya a cikin mafi kusancin kowane waya ta pre-sa.

Yana ɗaukar ƙarin lokaci zuwa etch da oza na jan ƙarfe domin ƙirƙirar rata mafi girma a cikin warin waya. Wannan ake kira shi da etch factor, kuma ba tare da masana'anta samar da tabbataccen jerin gibanni a kan oza na etch factor. Yana da matukar muhimmanci a lissafa mafi karancin karfin kowace oce na jan karfe. Prorcoran attcor ma ya shafi rafin zubar mai kera. Girman ramin zobe na gargajiya shine 0.0762mm immating + 0.0762mm hering + 0.0762 stacking, na jimlar 0.2286. Ethch, ko etch factor, yana ɗaya daga cikin manyan sharuɗɗan huɗu da suka faɗi matakin tsari.

Don hana Layer kariya daga faɗuwa da haɗuwa da buƙatun gabatarwa na sunadarai, etching da ƙima da ƙarancin rarrabuwa ya zama ƙasa da 0.127mm. La'akari da abin mamakin na ciki da kuma rage-hanzari yayin aiwatar da aikin etching, nisa daga waya ya kamata a karu. Wannan darajar ta tabbatar da kauri daga wannan Layer. Ka yi kauri da tagulla, tsawon lokaci yana ɗaukar ƙarfe da jan ƙarfe tsakanin wayoyi da kuma a ƙarƙashin murfin kariya. A sama, akwai bayanai guda biyu waɗanda dole ne a yi la'akari da su don etching etching: factor factor - yawan tagulla da ulari a kowane oza; da kuma ƙarancin rata ko fadin fadin bayan oza na jan ƙarfe.