PCB Etchback Matanho: Kuve nechokwadi chepamusoro-Unhu Multilayer PCB dzeCritical Applications

KuHighleap Electronic, isu tiri nyanzvi mukugadzira PCB nePCB gungano, tichipa mhinduro dzakanyatso-engineered kune dzakasiyana siyana maindasitiri, anosanganisira emotokari, nhare, zvekurapa, uye aerospace. Isu tine hunyanzvi mumultilayer PCB inoda hunyanzvi hwekugadzira epamberi, sePCB etchback, kuvandudza mashandiro uye kuvimbika. Etchback maitiro anoita basa rakakosha mukusimudzira conductivity yemagetsi pakati pezvikamu zvePCB, kunyanya kana ichibata neakapfava-kuburikidza nemakomba (PTH). Izvi zvinogonesa high-conductivity yezvikumbiro zvakakosha, uko kurongeka uye kugadzikana kwakakosha.

Chii chinonzi PCB Etchback uye Nei Ichikosha?

PCB Etchback inzira inoshandiswa kubvisa resin smears uye dielectric tsvina inogona kuvharidzira nzira dzemagetsi pakati pezvikamu mu multilayer PCB. Munguva yekuchera, resin inoshandiswa kubatanidza maturusi inogona kuzora pamadziro eiyo yakacherwa, izvo zvinokanganisa conductivity yemagetsi uye kukanganisa kushanda kwePCB. Etchback inochenesa madziro emukati evhavha, achiagadzirira kuputirwa kwemhangura, iyo inovimbisa yakachena, yakavimbika kubatana pakati pematanho uye inosimudzira chiratidzo chekuvimbika.

Mumashandisirwo akavimbika epamusoro senge michina yekurapa, aerospace, uye zvemagetsi zvechiuto, etchback maitiro akakosha kuve nechokwadi chekuti PCB inokwanisa kubata mafungu epamusoro uye kuchengetedza chaiyo yekutapurirana kwechiratidzo pasina kukundikana. Nekubvisa resin nemarara, etchback inonatsiridza plating adhesion, zvichiita kuti ive yakakosha maitiro ekuvimbika kwenguva refu.

Mhando dzePCB Etchback Maitiro

Kune mhando mbiri huru dze etchback maitiro: Negative Etchback uye Positive Etchback, imwe neimwe ine chaiyo zvakanakira, maapplication, uye kufunga.

1. Negative Etchback

Negative Etchback ndiyo yechinyakare uye inonyanya kushandiswa nzira muPCB kugadzira. Munzira iyi, mhangura inomisikidzwa kumashure kubva kumadziro, nepo dielectric zvinhu zvichisara zvakamira. Iyo mhangura inodzoserwa kumashure, ichivimbisa shanduko yakatsetseka pakati pembiru yemhangura nePCB kuburikidza.

• urongwa: PCB inonyudzwa mumhangura etchant, kazhinji ferric chloride, iyo inobvisa zvishoma (0.001" kusvika 0.0005") yemhangura kubva pamadziro.
• Advantages: Negative etchback inodhura-inoshanda, yakavimbika, uye inowanzoshandiswa kune yakajairwa PCBs uko kushanda kwemagetsi kusiri kudiwa zvakanyanya. Inokodzera kune dzakawanda zvikumbiro.
• zvainovhiringidzawo: Kunyange zvazvo ichishanda, nzira iyi inogona kuderedza kushanda nekubvisa mhangura kubva pamugwagwa, zvichiita kuti pave nekuparadzaniswa kwepakati kana mahomwe emhepo mukati mevhavha, zvichikanganisa kuvimbika kwenguva refu kwePCB.

2. Positive Etchback

Positive Etchback ndiyo yakawedzera etching nzira uko dielectric zvinhu pakati pemhangura zvidimbu zvinobviswa, zvichibvumira iyo mhangura kuti ibude mukati meiyo via.

• urongwa: Iyi nzira inoshandisa plasma etching kubvisa resin uye dielectric zvinhu kubva pamadziro. Plasma etching inodzorwa zvakanyanya, ichifumura mhangura pamativi ese eiyo via uye nekuona zvirinani plating adhesion.
• Advantages: Positive etchback inobatsira kune yakakwirira-yakavimbika maapplication akadai sekurapa, aerospace, uye echiuto PCB. Iyo inonatsiridza conductivity yemagetsi pakati pematanho uye inogadzira yakawedzera kusimba matatu-terminal kusangana mukati meiyo via, zvichiita kuti ive yakakodzera kune inoda nharaunda.
• zvainovhiringidzawo: Maitiro acho anodhura zvakanyanya uye anogona kuunza kushushikana mukati meiyo via, izvo zvinogona kutungamira kune foil makatsemuka kana kushushikana padhiramu remhangura. Kunyatsobata kubata kunodiwa kuti udzivise maburi, ayo anogona kukanganisa kuvimbika kwePCB.

PCB Positive Etchback Process Overview

Iyo yakanaka etchback process yakakosha kune mamwe maPCB akawanda uye inonyanya kushanda mune yakakwirira-yakavimbika maapplication akadai sekurapa, aerospace, uye mauto maseketi. Kana vatengi vakakumbira yakanaka etchback (inozivikanwawo sePositive Etch Back), maitiro aya akarongedzerwa kuti ave nechokwadi chekuti mhete dzemukati dzemhangura dzinobuda mumakomba, ichipa yepamusoro copper plating uye conductivity yemagetsi pamatanho.

Heino mhedziso yezvakanaka etchback maitiro:

Kugadzika Kwekutanga : Maitiro aya anotanga nekushanda kamwe chete kwePCB, kazhinji kunosanganisira maburi ane simbi (PTH).

Kuyerera Kwemaitiro eBhora Rekuboorera Rimwe Chete :

Kugadzira → Lamination → Kuboorera → Kubvisa maburi 1 → Bhodhi rekuomesa 1 → Kurapa nePlasma → Kucheka neFiberglass → Kubvisa maburi 2 → Kuputira neCopper → Mushure mekugadzirisa.

Kune akawanda ekuchera mabasa ane metalized kuburikidza nemakomba:

Pre-process → Nyoni → Resin Drilling → Kubvisa 1 → Drying Board 1 → Plasma Treatment → Fiberglass Etching → Kubvisa 2 → Copper Plating → Resin Plugging → Drilling → Kubvisa 3 → Drying Board 2 → Kurapa Plasma 1 → Fiberglass Etching 1 → Kubvisa 4 → Copper Plating 1 → Post-maitiro.

Kune mapofu uye akavigwa makomba, maitiro anosiyana zvichienderana nekuti maburi acho akacherwa nemuchina kana nelaser:

Kuboorera neMichina (kuburikidza nekuboorera neMichina yekuisa maburi asingaonekwe, ≥3 layers) : Sub-board : Pre-process → Lamination → Kuboorera → Kuboorera neDeburring 1 → Drying Board 1 → Plasma Treatment → Fiberglass Etching → Kuboorera neDeburring 2 → Copper Plating → Post-process.

Bhodhi Guru : Zvakafanana nezviri pamusoro apa, asi pamwe nematanho ekuwedzera ekuzadza resin kana zvichibvira.

Kuboorwa neLaser : Kune maburi anoboorwa nelaser (kusanganisira danho rimwe kana maviri), etchback haidiwi.

PaHighleap Electronic, maitiro e etchback akanaka akakosha pakuona kuti maPCB ane ma multilayer anofamba zvakanaka uye akavimbika . Kana PCB iine gomba rimwe chete rakacherwa nesimbi, kufamba kwemaitiro kunotanga ne lamination, zvichiteverwa nekuboorwa ne plasma treatment kubvisa chero zvasara zvisingadiwe. Matanho anotevera anosanganisira fiberglass etching kugadzirira maburi akacherwa ne copper plating kuti ive nechokwadi chekuti maPCB ane metalized vias anofamba zvakanaka. Maitiro aya anovimbisa kushanda kwepamusoro-soro kwemaPCB akajairwa ane metalized vias.

Kune maPCB anoda akawanda kuchera maoparesheni, akadai seaya anosanganisira kuchera resin kunoteverwa nekuchera maburi asina resin, mamwe matanho anodiwa. Mushure mekutanga kuchera resin, resin plugging inoitwa kuzadza maburi. Zvadaro, bhodhi rinoita kurapwa kweplasma, fiberglass etching, uye copper plating mushure mechikamu chega chega chekuchera kuti ive nechokwadi chekuti maburi ese akacheneswa uye akagadzirira kuputirwa. Iyi nzira inovimbisa kuti akawanda metalized vias vanobatwa zvakafanana yakakwirira mwero, kuchengetedza kuvimbika uye conductivity pamusoro PCB.

Panyaya yemabofu kana maburi akavigwa, kunyanya ayo akacherwa nemuchina anopinda anopfuura matatu akaturikidzana, iyo etchback maitiro inoda kurapwa kweplasma uye fiberglass etching pamberi pemhangura yekuisa nhanho. Kune maburi e-laser-drilled, zvisinei, iyo etchback maitiro haidiwi. Izvi zvinobvumira mhedzisiro, yemhando yepamusoro pasina mamwe maitiro, kuve nechokwadi chekuti maPCB akaomarara ane madhiri ekudhirowa akagadzirirwa akagadzirirwa kuita kwakakwana kwemagetsi.

Kana chirongwa ichi chikachinja kubva pakutsvagisa kuenda kuRFQ, ongororai kuongororwa kwePCB nekudzora mhando uye zvinodiwa pakuyedza PCB kuitira kuti zvinhu, maitiro, uye zvinodiwa pakuyedza zvirambe zvakaenzana.

ERP uye Maitiro Manotsi ePCB Etchback (Positive Etchback)

Mune yakanaka etchback maitiro, kutarisisa kune zvese zvishandiso uye matanho ekugadzirisa kwakakosha kuti uwane yemhando yepamusoro uye kuita kwePCB yako. Iko kushandiswa kwezvinhu zvakakosha etchback zvinhu kwakakosha kuchengetedza yakakwana etching uye plating mhedzisiro, kuve nechokwadi chekuti PCB yako yakagadzirira maitiro anotevera. Kuti uve nechokwadi chekugadzirira kwakakodzera pamberi pematanho etchback, zvakakosha kuomesa mapuranga pa150 ° C kwemaawa 0.5.

Deburring nderimwe danho rakakosha muPCB etchback process inoita kuti vias iite mushe uye yakasununguka kubva kumicheto inopinza, iyo inogona kukanganisa maitiro ekupedzisira. Iyo deburring process inoitwa mumatanho akawanda:

• Danho rekutanga nerechitatu rinosanganisira kudonhedza nguva dzose kubvisa mipendero yakapinza.
• Yechipiri neyechina nhanho inoshandisa yakavharwa brushing inoteverwa nemapasi maviri kuti inyatso kutsvedzerera mipendero. Izvi zvinova nechokwadi chekuti hapana mipendero inopinza inovharisa maitiro anotevera akadai sekurapa kweplasma uye fiberglass etching, ese ari maviri akakosha kuti uwane yemhando yepamusoro plating.

Kurapwa kwePlasma kunobvisa chero zvisaririra kubva kumaburi, kuve nechokwadi chekunamira kuri nani kwemhangura yekuisa. Uye zvakare, fiberglass etching inoitwa kubvisa dielectric zvinhu zvinogona kuvharidzira kurongedza kwakaringana. Iyi nhanho inonyanya kukosha kune yakakwirira-yakavimbika maapplication, uko kwakachena vias uye kwakaringana mhangura yemhangura inodiwa kuti uwane yakakwana conductivity uye kusimba kwenguva refu kwePCB.

Kugadzirisa PCB Etchback kune Yepamusoro-Kuita Zvikumbiro

Maitiro akanaka e etchback akakosha mukugadzirwa kwePCB sezvo achivimbisa kuti maPCB ane layer akawanda anochengetedza conductivity yakakwira uye akavimbika kwenguva refu. Nekubvisa mhangura yakawandisa nekungwarira uye kubvisa resin nezvinhu zve dielectric kubva mu vias, Highleap Electronic inoita kuti PCB yega yega isvike padanho remhando yepamusoro. Izvi zvinonyanya kukosha mukushandiswa kwepamusoro-soro uko kusimba kwechiratidzo kuri kukuru.

Yedu yepamusoro PCB etchback maitiro, angave emakomba mapofu, akavigwa vias, kana laser-akaboorwa makomba, optimize chiratidzo kutendeseka uye kusimba kuzadzisa izvo chaizvo zvinodiwa padhizaini yako. Nekutevedzera mirairo yekugadzira yakasimba uye tekinoroji yekucheka-kumucheto, tinovimbisa maPCB emhando yepamusoro, akavimbika kune akasiyana maindasitiri, kubva kumotokari kuenda kundege uye zvekurapa zvikumbiro.

Kunyangwe purojekiti yako ichisanganisira akareruka ega-layer dhizaini kana yakaoma multilayer zvimiro, Highleap Electronic yakatsaurirwa kuendesa maPCB anomira muyedzo yenguva, kuve nechokwadi chekuita kwakasiyana uye kuvimbika kune akasiyana maapplication. Vimba nesu kuti tipe maPCB akakwenenzverwa anozadzisa zvaunoda zvakanyanya.

Etchback Techniques: Micro-Etch vs. Plasma Etch

Pane nzira mbiri dzekutanga dzinoshandiswa kuita etchback: Micro-Etch uye Plasma Etch. Matekiniki ese akagadzirirwa kubvisa resin nemarara kubva pamadziro, asi imwe neimwe ine mabhenefiti akasiyana zvichienderana nekushandisa.

1. Micro-Etch (Negative Etchback)

Micro-etch inoshandisa alkaline copper etchant kubvisa resin uye smears kubva pamadziro. Iyo PCB inonyudzwa mukati kana kupfapfaidzwa neiyo etchant kuti iwane kubviswa chaiko kwemhangura, kuchenesa kuburikidza nemadziro.

Zvakanakira : Micro-etch inoshanda kune negative etchback uye inowanzo shandiswa mumaPCB akajairwa uko kudzora kwakanyatsojeka maitiro ekucheka kusina kukosha zvakanyanya. Imhinduro inodhura zvishoma kune akawanda mashandisirwo akajairika.

2. Plasma Etch (Positive Etchback)

Plasma etching inzira yepamusoro apo magasi eplasma anoshandiswa kubvisa dielectric zvinhu uye resin kubva pamadziro. Iyi nzira inopa kurongeka kuri nani uye inovimbisa kudzorwa kwakawanda.

Zvakanakira : Plasma etch inobvumira kudzora kwakanyatsojeka maitiro e etchback, zvichipa kururama kwakanyanya uye kushanda zvakanaka kwe etchback yakanaka. Inowanzoshandiswa mumaPCB akavimbika zvakanyanya, uko kushanda kwechiratidzo uye kunamira kweplating kwakakosha.

Kusarudza iyo Yakarurama PCB Etchback Maitiro eKugadzira Kwako

PaHighleap Electronic, tinonzwisisa kuti chirongwa chePCB chega chega chinouya nezvakasiyana seti yezvinodiwa. Kusarudza yakanyatsokodzera PCB etchback maitiro kwakakosha kuti uve nechokwadi chekudiwa kwemagetsi kuita uye kuvimbika kwebhodhi redunhu rako. Zvichienderana nekuoma kwedhizaini yako uye neayo chaiwo maitiro ekuita, tinokutungamira mukusarudza pakati pezvakanaka etchback kana zvisina kunaka etchback maitiro. Kunyangwe iwe uchida yakanaka etchback kune yakakwirira-yakavimbika maapplication kana yakaipa etchback kune inodhura-inoshanda dhizaini dhizaini, isu takazvipira kukubatsira iwe kuwana zvakanakisa mhedzisiro maererano nechiratidzo chekuvimbika uye plating adhesion.

Kune yakakosha, yakakwirira-yakavimbika zvikumbiro senge zvekurapa kana zvemuchadenga maseketi, yakanaka PCB etchback inowanzova sarudzo inofarirwa. Inopa kutendeseka kwepamusoro kwechiratidzo uye inovandudza kuvimbika kweplating, iyo yakakosha kune maapplication uko kuita kunofanirwa kunge kusingachinjike. Iyi nzira inokwidziridza conductivity yemagetsi uye inoita kuti PCB ikwanise kumirisana nemamiriro ezvinhu anodiwa pamusoro pehupenyu hwayo hwekushanda.

Mukupesana, kune akajairwa maPCB, uko mutengo-unoshanda ndiwo wakakosha kufunga, yakaipa PCB etchback inopa yakavimbika uye inoshanda mhinduro. Kunyange zvazvo isiri yehasha seyakanaka etchback, iyi nzira inovimbisa kubviswa kwakakwana kwe resin uye dielectric zvinhu kubva pavias, zvichipa kuenzana kwekuita uye kukwanisa kwezvigadziri zvisingadi kunyatsojeka kwe etchback yakanaka. Pa Highleap Electronic, tinoona kuti PCB yako etchback maitiro akarongedzerwa kuti asangane nezvido zvechikumbiro chako, uchiwana kuita kwakaringana uku uchifunga nezvekudhura.

mhedziso

Mukugadzira PCB, etchback maitiro akadai seasina kunaka uye akanaka etchback akakosha pakuona kwepamusoro-mhando kushanda mumultilayer PCB. KuHighleap Electronic, isu tinoshandisa etchback nzira dzemberi kubvisa resin smears uye dielectric tsvina, iyo inosimudzira kutapurirana kwechiratidzo, kunamatira kweplating, uye kuvimbika kwePCB. Kunyangwe iwe uri kugadzira maPCB akavimbika kwazvo emaindasitiri akaita semuchadenga, mauto, kana zvekurapa, kana maPCB akajairwa emagetsi evatengi, kunyatsoita kwedu uye hunyanzvi hunovimbisa kushanda kwemagetsi kwepamusoro uye kuvimbika. Sarudza Highleap Electronic yePCB yako yekugadzira uye gungano zvinodiwa, uye ubatsirwe kubva kune edu epamusoro mhinduro anokwirisa magadzirirwo ako kune chero application.