I le taimi nei, e i ai le tele o Laupapa PCB in the market in a dazzling variety of colors. Sili ona masani laupapa laupapa PCB e lanu meamata, uliuli, lanumoana, samasama, lanu viole, mumu ma enaena, nisi gaosi foi atiaʻe atiaʻe papaʻe, piniki ma isi lanu eseʻese o PCB.

Eseese lanu lanu laupapa faʻalauiloa laupapa

E masani ona talitonuina o le uliuli PCB foliga mai e tu i le pito i luga maualuga, ae mumu, samasama ma isi o loʻo taofia mo le pito maualalo. Pe e moni lenā?

In PCB production, the copper layer, whether made by addition or subtraction, ends up with a smooth and unprotected surface. E ui lava o le vailaʻau meatotino o le kopa e le o toaaga e pei o le alumini, uʻamea, magnesium ma isi, ae i le tulaga o le vai, mama apamemea ma faʻafesoʻotaʻi le okisene e faigofie ona faʻamamaina; Ona o le i ai o le okesene ma le ausa vai i le ea, o le pito i luga o le ‘apamemea mama o le a oxidize vave pe a faʻafesoʻotaʻi ma le ea. Talu ai o le mafiafia o apamemea vaega i PCB laupapa e manifinifi lava, o le ‘apamemea oxidized o le a avea ma leaga taʻitaʻia eletise, lea o le a matua afaina ai le eletise faatinoga o le atoa PCB.

To prevent copper oxidation, to separate the welded and non-welded parts of the PCB during welding, and to protect the surface of the PCB board, design engineers developed a special coating. This coating can be easily applied to the surface of the PCB board, forming a protective layer of a certain thickness and blocking the contact between copper and air. This layer of coating is called solder blocking and the material used is solder blocking paint.

If it’s called paint, it must be a different color. Ioe, e mafai ona faia ni vali e leai se lanu ma manino le vali solder mata, ae e masani ona manaʻomia e PCBS lolomi tusitusiga laiti i luga o le laupapa mo faigofie tausiga ma gaosiga. E mafai ona faʻaali mai i le PCB talaaga faʻasolosolo vali solder manino, pe o le gaosiga, tausiga poʻo le faʻatau atu, o foliga e leʻo lava lelei. So engineers add a variety of colors to the solder resist paint, resulting in black or red or blue PCBS. However, it is difficult to see the wiring of black PCB, so there will be some difficulties in maintenance.

Mai lenei manatu, o le PCB laupapa lanu ma le PCB lelei e leai se faiā. Le eseesega i le va o le uliuli PCB ma le lanu moana PCB, samasama PCB ma isi lanu PCB o loʻo taʻoto i le lanu o le vali teteʻe i luga o le mulimuli pulumu. Afai o le PCB ua fuafuaina ma gaosia tutusa tutusa, o le lanu o le a leai se aʻafiaga i le faʻatinoina, pe o le ai ai sona aʻafiaga i le faʻaseseina vevela. Ae mo le uliuli PCB, o lona laualuga uaea ua toeititi ufiufi, lea e mafua ai tele faigata i le tausiga mulimuli ane, o lea e le matua talafeagai e gaosia ma faʻaaoga le lanu. O le mea lea, i tausaga talu ai nei, tagata faʻasolosolo maliega, lafoa le faʻaogaina o le uliuli vali uʻamea, e faʻaaoga ai le pogisa lanumeamata, pogisa enaena, pogisa lanumoana ma isi uelo vali, o le mafuaʻaga o le faʻafaigofieina gaosiga ma tausiga.

I le tautalagia o lenei mea, ua tatou malamalama lava i le faʻafitauli o le PCB lanu. Ae mo le faʻaupuga e faapea “lanu e fai ma sui vasega maualuga poʻo vasega maualalo”, e mafua ona o tagata gaosi e fiafia e faʻaaoga le PCB uliuli e gaosia ai oloa maualuluga, ma faʻaaoga mumu, lanumoana, lanumeamata, samasama ma isi maualalo oloa.O le iʻuga o le: o le oloa e aumaia le uiga o le lanu, ae le o le lanu e aumai ai le uiga o le oloa.