Use/characteristics of PCB materials and matters needing attention

Nhasi PCB substrate substrate inoumbwa neCooper Foil, Reinforcement, resin uye zvimwe zvinhu zvitatu zvakakosha, asi kubvira pakatungamira Maitiro Emahara, hupfu hwechina mafirita akawedzerwa zvakanyanya kubhodhi rePCB. Kuvandudza kupisa kupisa kwePCB.

Tinogona kufunga nezvemhangura foil semidziyo yeropa yemuviri wemunhu, yaishandiswa kutakura yakakosha ropa, kuitira kuti PCB iridze kugona kwekuita; Kusimbisa kunogona kufungidzirwa semapfupa emunhu, anoshandiswa kutsigira nekusimbisa iyo PCB haizowira pasi; Resin, kune rimwe divi, inogona kufungidzirwa semhasuru yemuviri wemunhu, chinhu chikuru chePCB.

Izvo zvinoshandiswa, hunhu uye nyaya dzinoda kutariswa kwezvinhu zvina zvePCB zvinotsanangurwa pazasi:

1. Mhangura YeMhangura

Dunhu reMagetsi: Dunhu rinoitisa magetsi.

Mutsara wechiratidzo: nhamba inotumira meseji.

Vcc: magetsi emagetsi, anoshanda magetsi. Magetsi anoshanda ezvigadzirwa zvekutanga zvemagetsi ainyanya kuiswa se12V. Nekushanduka kwetekinoroji uye chinodiwa chekuchengetedza magetsi, iyo inoshanda voltage zvishoma nezvishoma ikava 5V uye 3V, uye ikozvino iri kufamba zvishoma nezvishoma kuenda ku1V, uye chinodiwa chemhangura foil iri kuwedzera zvakanyanya.

GND (Grounding) : Grounding ground. Vcc inogona kufungidzirwa seshongwe yemvura mumba, kana isu tavhura pombi, kuburikidza nekumanikidza kwemvura (kushanda voltage) ichave nemvura (zvemagetsi) zvinoyerera zvichibuda, nekuti iko kuita kwemagetsi zvikamu zvinoonekwa nekuyerera kwemaerekitironi; A GND idhini. Mvura yese inoshandiswa kana kusashandiswa inodzika panodira mvura. Zvikasadaro pombi yaizoramba ichidonha uye imba yako yaizofashama.

Kupisa Kupisa (nekuda kweKwakapisa kwemafuta Conductivity): Kupisa Kupisa. Wakambonzwa nezve imwe CPU inopisa zvakakwana kuti ubike mazai, izvi hazvisi kuwedzeredza, zvizhinji zvemagetsi zvinoshandisa simba uye zvinogadzira kupisa, panguva ino inoda kugadzira nzvimbo hombe yemhangura foil kuburitsa kupisa mumhepo nekukurumidza zvinogoneka, zvikasadaro kwete chete munhu haagone kushivirira, kunyangwe zvikamu zvemagetsi zvichatevera zvakare muchina.

Kusimbisa.

Kana uchisarudza pcb yekusimbisa zvinhu, inofanirwa kuve iine hunhu hunotevera. Mazhinji ePBBB zvekusimbisa zvinhu zvatinoona zvakagadzirwa neGF (Glass Fibre). Kana iwe ukatarisa nokungwarira, izvo zvigadzirwa zveGirazi Fibha zvakati fananei netambo yakatetepa yekuredza. Nekuda kweanotevera hunhu zvakanakira, inowanzo shandiswa senge yakakosha zvinhu zvePCB.

Kuomarara Kwakakwirira: Inoita kuti PCB isanyanya kuoma.

Dhiimendi Kugadzikana: Yakanaka kuenzana kugadzikana.

Yakadzika CTE: inopa Yakadzika “yekupisa yekuwedzera mwero” kudzivirira iwo wedunhu kutaurirana mukati mePBB kubva pakubvisa uye kukonzera kutadza.

Yakadzika Warpage: ine Yakadzika deformation, ndiko kuti, Yakadzika ndiro yekukotama, ndiro yekumira.

Yakakwira MaModule: Yakakwira Mudiki modulus

3. Resin Matrix

Traditional FR4 boards are epoxy-dominated, LF (Lead Free)/HF (Halogen Free) boards are made of a variety of resins and different curing agents, making the cost of LF about 20%, HF about 45%.

HF ndiro iri nyore kutsemura uye kuwedzera kutora kwemvura, gobvu uye hombe hombe inokomberedza CAF, zvinodikanwa kushandisa yakavhurika fiber jira, rakapetwa fiber jira, uye kusimbisa izvo zvinhu zvine yunifomu kunyudzwa.

Mafuta akanaka anofanirwa kuve nemamiriro anotevera:

Kuramba Kwakanaka Kwekupisa. Kupisa kwemoto zvakapetwa kaviri kana katatu mushure mehwendefa risingaputi, kwakanaka kupisa kuramba.

Kuderedza Mvura Kwakadzika: Kuderera Kwemvura Kwakadzika. Kunwa kwemvura ndicho chikonzero chikuru chePCB board kuputika.

Flame Retardance: Inofanirwa kuve Flame yakadzoserwa.

Peel Simba: Iine yakakwira “misodzi Simba”.

Yakakwira Tg: Yakakwira girazi mamiriro ekuchinja poindi. Zvizhinji zvezvinhu zvine yakakwira Tg hazvisi nyore kupinza mvura, uye chikonzero chakakosha chekusaputika bhodhi haisi yekumwa mvura, pane yakakwira Tg.

Wati Kusimba kwakanaka. Iyo yakakura kuomarara, iyo shoma inoputika bhodhi. Iko kusimba kweplate kunodaidzwa kunzi “simba rekutsemuka,” uye zvirinani izvo zvinhu, zvirinani zvichakwanisa kumira mukukanganisa nekukuvara.

Dhielectric zvivakwa: Yakakwira Dielectric zvivakwa, kureva insulating zvinhu.

4. Mafirita System (upfu, zadza)

Muchikamu chekutanga chemutobvu wemutobvu, tembiricha yakanga isiri yakanyanya, uye yekutanga pcb board yaive ichiri kutsungirira. Sezvo kutungamira-kwemahara kutenderera, tembiricha yakawedzera, saka hupfu hwakawedzerwa kubhodhi rePCB kuita iyo pcb yakasimba kuramba tembiricha.

Mafiripi anofanirwa kubatanidzwa kutanga kugadzirisa kunopararira uye kuumbika.