Don dalilai da yawa, akwai nau'ikan ayyukan masana'anta na PCB da yawa waɗanda ke buƙatar takamaiman ma'aunin tagulla. Muna karɓar tambayoyi daga abokan ciniki waɗanda ba su da masaniya game da ma'anar nauyin jan karfe daga lokaci zuwa lokaci, don haka wannan labarin yana nufin magance waɗannan matsalolin. Bugu da ƙari, waɗannan sun haɗa da bayani game da tasirin ma'aunin ma'aunin tagulla daban-daban akan tsarin taro na PCB, kuma muna fatan wannan bayanin zai kasance da amfani har ma ga abokan ciniki waɗanda suka riga sun saba da ra'ayi. Zurfafa fahimtar tsarin mu zai iya ba ku damar tsara tsarin masana'antu da kuma farashin gabaɗaya.

Kuna iya tunanin nauyin jan karfe a matsayin kauri ko tsayin alamar jan karfe, wanda shine girma na uku wanda bayanan Layer na jan karfe na fayil na Gerber baiyi la'akari da shi ba. Ƙungiyar ma'auni ita ce oza a kowace ƙafar murabba'in (oz / ft2), inda 1.0 oz na jan karfe aka canza zuwa kauri na mil 140 (35 μm).

Ana amfani da PCBs masu nauyi na tagulla a cikin kayan wutan lantarki ko duk wani kayan aiki da zai iya fama da matsananciyar yanayi. Hanyoyi masu kauri na iya samar da tsayin daka, kuma suna iya ba da damar alamar don ɗaukar ƙarin halin yanzu ba tare da ƙara tsayi ko faɗin alamar zuwa matakin maras kyau ba. A ɗayan ƙarshen lissafin, ana ƙididdige ma'aunin ma'aunin tagulla masu sauƙi a wasu lokuta don cimma ƙayyadaddun ƙayyadaddun alamar alama ba tare da buƙatar ƙaramin tsayi ko faɗi ba. Sabili da haka, lokacin ƙididdige faɗin alamar, "nauyin jan karfe" filin da ake buƙata.

Yawan nauyin nauyin jan karfe da aka fi amfani da shi shine oza 1.0. Cikakken, dace da yawancin ayyukan. A cikin wannan labarin, yana nufin sanya nauyin jan ƙarfe na farko zuwa ƙima mafi girma yayin aikin kera PCB. Lokacin zayyana ma'aunin nauyin jan karfe da ake buƙata ga ƙungiyar tallace-tallacen mu, da fatan za a nuna ƙimar ƙarshe (plated) na nauyin jan ƙarfe da ake buƙata.

Ana ɗaukar PCBs masu kauri na tagulla a matsayin PCBs waɗanda ke da kaurin tagulla na waje da na ciki daga 3 oz/ft2 zuwa 10 oz/ft2. Nauyin jan karfe na PCB mai nauyi na jan karfe da aka samar ya bambanta daga oza 4 a kowace ƙafar murabba'in zuwa oza 20 a kowace ƙafar murabba'in. Ingantacciyar nauyin jan ƙarfe, haɗe tare da kauri mai kauri da madaidaicin madauri a cikin ramin, na iya juya allon kewayawa mai rauni zuwa dandamalin wayoyi masu ɗorewa kuma abin dogaro. Manyan madugu na jan karfe za su ƙara kauri ga PCB gabaɗaya. Ya kamata a yi la'akari da kauri na tagulla koyaushe a lokacin ƙirar ƙirar kewaye. Ƙarfin ɗaukar nauyi na yanzu yana ƙayyade ta nisa da kauri na jan karfe mai nauyi.

Ƙimar nauyin nauyin jan ƙarfe mafi girma ba zai ƙara yawan jan karfe da kansa ba, amma kuma yana haifar da ƙarin nauyin jigilar kaya da lokacin da ake buƙata don aiki, aikin injiniya na tsari, da kuma tabbatar da inganci, yana haifar da ƙarin farashi da ƙara yawan lokacin bayarwa. Da farko, dole ne a ɗauki waɗannan ƙarin matakan, saboda ƙarin murfin jan ƙarfe a kan laminate yana buƙatar ƙarin lokacin etching kuma dole ne ya bi ƙayyadaddun ƙa'idodin DFM. Nauyin jan ƙarfe na allon kewayawa shima yana rinjayar aikin zafinsa, yana haifar da allon kewayawa don ɗaukar zafi da sauri yayin matakin sake kwararar siyar da taron PCB.

Ko da yake babu ma'anar ma'anar jan ƙarfe mai nauyi, an yarda da shi cewa idan an yi amfani da oza 3 (oz) ko fiye na jan ƙarfe akan yadudduka na ciki da na waje na allon da'ira, ana kiran shi PCB na jan ƙarfe mai nauyi. Duk wani da'ira mai kaurin jan karfe da ya wuce oza 4 a kowace ƙafar murabba'in (ft2) kuma ana lissafta shi azaman PCB na jan karfe mai nauyi. Matsanancin jan ƙarfe yana nufin 20 zuwa 200 oza kowace ƙafar murabba'in.

Babban fa'idar allunan da'irar tagulla mai nauyi shine ikon da suke da shi na jure wa sau da yawa ga igiyoyin ruwa da suka wuce kima, yanayin zafi da maimaita yanayin zafi, wanda zai iya lalata allunan da'ira na al'ada cikin 'yan dakiku. Farantin jan karfe mafi nauyi yana da ƙarfin ɗaukar nauyi, wanda ya sa ya dace da aikace-aikace a ƙarƙashin yanayi mara kyau, kamar samfuran tsaro da masana'antar sararin samaniya. Wasu fa'idodi na allunan kewayen jan karfe sun haɗa da:

Saboda ma'aunin ma'aunin tagulla da yawa akan layin da'irar iri ɗaya, girman samfurin yana da ƙarfi
Tagulla mai nauyi wanda aka sanya ta cikin ramuka yana wucewa ta yanzu ta hanyar PCB kuma yana taimakawa canja wurin zafi zuwa magudanar zafi na waje.
Babban wutar lantarki mai girman tsarin mai ɗaukar iska

Ana iya amfani da allunan da'ira da aka buga tagulla mai nauyi don dalilai da yawa, kamar su na'urori masu rarraba wuta, ɓarkewar zafi, rarraba wutar lantarki mai ƙarfi, masu canza wuta, da sauransu. Buƙatar allunan da aka lulluɓe tagulla a cikin kwamfutoci, motoci, sojoji, da sarrafa masana'antu na ci gaba da girma. Hakanan ana amfani da allunan da'ira da aka buga tagulla don:

Tushen wutan lantarki
tura wutar lantarki
Kayan aikin walda
Masana'antar mota
Masu samar da hasken rana, da dai sauransu.

Dangane da buƙatun ƙira, farashin samarwa na PCB mai nauyi na jan ƙarfe ya fi na PCB na yau da kullun. Saboda haka, mafi hadaddun ƙirar, mafi girman farashin samar da PCBs masu nauyi na jan karfe.