Yawancin 'yan wasan DIY za su ga cewa samfuran jirgi daban-daban a kasuwa suna amfani da launukan PCB iri-iri.
Mafi yawan launuka na PCB sune baki, kore, shuɗi, rawaya, shunayya, ja, da launin ruwan kasa.
Wasu masana'antun sun haɓaka fari, ruwan hoda da sauran launuka daban-daban na PCB.

A cikin ra'ayi na al'ada, PCB baƙar fata yana da alama yana matsayi a babban ƙarshen, yayin da ja, rawaya, da dai sauransu, an sadaukar da ƙananan ƙarshen, shin daidai ne?

The jan karfe Layer na PCB ba tare da solder juriya shafi oxidizes sauƙi a lokacin da fallasa zuwa iska

Mun san cewa duka gaba da baya na PCB sune yadudduka na tagulla.A cikin samar da PCB, Layer na jan karfe zai kasance yana da santsi kuma mara tsaro komai an ƙera shi ta hanyar ƙari ko ragi.

Ko da yake sinadarai na jan karfe ba su da aiki kamar aluminum, baƙin ƙarfe, magnesium, amma a gaban ruwa, jan ƙarfe mai tsabta da haɗin oxygen yana da sauƙi don zama oxidized;
Saboda kasancewar iskar oxygen da tururin ruwa a cikin iska, saman jan ƙarfe mai tsafta zai fuskanci yanayin iskar oxygen nan da nan bayan haɗuwa da iska.

Kamar yadda kauri na jan karfe a cikin PCB yana da bakin ciki sosai, jan ƙarfe mai oxidized zai zama mara kyau madubin wutar lantarki, wanda zai lalata aikin lantarki na PCB gaba ɗaya.

Don hana iskar oxygen da tagulla, don raba sassan welded da waɗanda ba a welded na PCB a lokacin walda ba, da kuma kare saman PCB, injiniyoyi sun ƙera wani shafi na musamman.
Ana iya amfani da murfin cikin sauƙi a saman PCB, samar da wani shinge mai kariya na wani kauri da kuma toshe jan ƙarfe daga hulɗar iska.
Wannan Layer na rufi ana kiransa Layer juriya Layer kuma kayan da ake amfani da shi shine fenti juriya.

Tunda ana kiransa fenti, dole ne a sami launuka daban-daban.
Ee, fenti na juriya na asali na iya zama mara launi kuma a bayyane, amma PCB sau da yawa yana buƙatar bugu akan allo don samun sauƙin gyarawa da ƙira.

Fentin juriya mai fa'ida zai iya nuna launi na PCB kawai, don haka ko an yi shi, an gyara shi ko kuma an sayar da shi, bayyanar ba ta da kyau.
Don haka injiniyoyi suna ƙara launuka iri-iri zuwa fentin juriya don ƙirƙirar PCB na baki ko ja ko shuɗi.

 
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Black PCBs suna da wuyar ganin wayoyi, wanda ke sa kulawa da wahala

Daga wannan ra'ayi, launi na PCB ba shi da alaƙa da ingancin PCB.
Bambanci tsakanin PCB baƙar fata da PCB blue, PCB rawaya da sauran PCB masu launi yana cikin launi daban-daban na fenti juriya akan goga.

Idan PCB an ƙera shi kuma an ƙera shi daidai, launi ba zai yi wani tasiri a kan aikin ba, kuma ba zai yi tasiri a kan zubar da zafi ba.

Dangane da PCB baƙar fata, an kusan rufe filayenta gaba ɗaya, wanda ke haifar da matsaloli masu yawa don kulawa daga baya, don haka launi ne wanda bai dace da ƙira da amfani ba.

Saboda haka, a cikin 'yan shekarun nan, mutane sannu a hankali gyara, daina yin amfani da baki solder juriya fenti, da kuma amfani da duhu kore, duhu launin ruwan kasa, duhu blue da sauran solder juriya fenti, manufar shi ne don sauƙaƙe masana'antu da kiyayewa.

A wannan gaba, muna da m bayyananne game da matsalar PCB launi.
Dalilin bayyanar "wakilin launi ko ƙananan daraja" shine saboda masana'antun suna son yin amfani da PCB na baki don yin samfurori masu mahimmanci, da ja, blue, kore, rawaya da sauran ƙananan samfurori.

Don taƙaitawa, samfurin yana ba da ma'ana ga launi, ba launi yana ba da ma'ana ga samfurin ba.

Menene fa'idar ƙarfe mai daraja irin su zinariya, azurfa tare da PCB?
Launi a bayyane yake, bari muyi magana game da ƙarfe mai daraja akan PCB!
Wasu masana'antun wajen tallata hajojinsu, musamman za su ambaci cewa kayayyakinsu sun yi amfani da zinariya, platin azurfa da sauran matakai na musamman.
To mene ne amfanin wannan tsari?

Fuskar PCB na buƙatar abubuwan waldawa, kuma ana buƙatar wani yanki na Layer na jan karfe don fallasa don walda.
Wadannan sifofin tagulla da aka fallasa ana kiran su pads, kuma pads yawanci rectangular ko madauwari kuma suna da ƙaramin yanki.

A sama, mun san cewa jan ƙarfe da aka yi amfani da shi a cikin PCB yana da sauƙi oxidized, don haka jan ƙarfe a kan kushin solder yana fallasa iska lokacin da aka yi amfani da fenti na juriya.

Idan jan karfe a kan kushin yana oxidized, ba wai kawai yana da wuyar walƙiya ba, amma kuma yana ƙaruwa da juriya, wanda ke shafar aikin ƙarshe na samfurin.
Don haka injiniyoyi sun fito da hanyoyi daban-daban don kare pads.
Kamar sanya zinari na ƙarfe marar aiki, da sinadarai rufe saman da azurfa, ko rufe tagulla da fim ɗin sinadari na musamman don hana haɗuwa da iska.

Kushin da aka fallasa akan PCB, Layer na jan karfe yana fallasa kai tsaye.
Wannan bangare yana buƙatar karewa don hana shi daga zama oxidized.

Daga wannan ra'ayi, ko zinariya ko azurfa, manufar tsarin kanta shine don hana oxidation da kare pads ta yadda za su iya tabbatar da yawan amfanin ƙasa a lokacin aikin walda na gaba.

Koyaya, amfani da ƙarfe daban-daban zai buƙaci lokacin ajiya da yanayin ajiya na PCB da aka yi amfani da shi a masana'antar samarwa.
Saboda haka, PCB masana'antu kullum amfani da injin sealing inji to kunshin PCB kafin kammala PCB samarwa da kuma bayarwa ga abokan ciniki don tabbatar da cewa wani hadawan abu da iskar shaka lalacewa faruwa ga PCB zuwa iyaka.

Kafin a haɗa abubuwan da aka gyara akan na'ura, masu kera katin katin suma suna buƙatar gano matakin oxidation na PCB, kawar da oxidized PCB, da tabbatar da yawan amfanin ƙasa mai kyau.
Mabukaci na ƙarshe don samun katin allo, shine ta hanyar gwaje-gwaje iri-iri, ko da bayan dogon lokacin amfani, oxidation zai kusan faruwa ne kawai a cikin toshewa da cire abubuwan haɗin haɗin gwiwa, kuma akan pads kuma an haɗa abubuwan haɗin gwiwa, babu wani tasiri.

Tun da juriya na azurfa da zinariya ya yi ƙasa, shin amfani da ƙarfe na musamman kamar azurfa da zinariya zai rage zafin da ake samu yayin amfani da PCB?

Mun san cewa abin da ke shafar ƙimar calorific shine juriya na lantarki.
Resistance da madugu kanta abu, madugu giciye yanki yanki, tsawon alaka.
Pad surface karfe kauri ne ko da nisa kasa da 0.01 mm, idan amfani da OST (kwayoyin kariya film) jiyya na kushin, ba za a sami wuce haddi kauri.
Juriya da aka nuna ta irin wannan ƙananan kauri ya kusan kusan sifili, ko ma ba zai yiwu a ƙididdige shi ba, kuma tabbas ba zai shafi zafi ba.