Zvinhu zvekugadzirira kugadzira PCB dzakawanda

Prepreg chinhu chinosunga chinoshandura murwi wezvidimbu zvemhangura kuita PCB imwe chete ine zvidimbu zvakawanda, uye kuisarudza nemazvo ndeimwe yesarudzo dzinokosha uye dzisingatariswe zvakanyanya mukugadzira zvidimbu zvakawanda. Prepreg chaiyo inozadza nzvimbo dziri pakati pemhangura yakachekwa, inoisa nzvimbo ye dielectric inodzora impedance, uye inosunga murwi wese kuita laminate isina chinhu pasi pekupisa nekumanikidzwa. Prepreg isiriyo - kana kuti resin isina kunaka yemhando ye layer pattern - inogadzira zvikanganiso zve voids, delamination, kana impedance zvingasaonekwa kusvika bhodhi rave kushanda. Gwaro iri rinotsanangura kuti core ne prepreg zvinoshanda sei pamwe chete, nei resin iri kukosha, zvinodiwa nemagadzirirwo e high-layer-count, uye maitiro ekuongorora sarudzo dzezvinhu usati wagadzira.

Kunzwisisa Zvinhu Zvikuru uye Zvekugadzirira Kuberekwa

PCB ine machira akawanda inochinjanisa mhando mbiri dzezvinhu. Pakati payo ilaminate yakagadzirwa nemhangura: jira rakasimba re resin negirazi rine mhangura yakabatana kune imwe kana mbiri, iyo inotakura denderedzwa rakachekwa rezvikamu zvemukati. Prepreg — muchidimbu zvinoreva pre-inpregnated — ijira regirazi rakazadzwa ne resin rakangocheneswa zvishoma, rinosiyiwa riri muchimiro cheB-stage kuitira kuti rirambe richiyerera uye richibatana kana rapiswa.

Munguva yekukanda, mapepa eprepreg anoiswa pakati pemacores akachekwa, uye stack yese inodzvanywa pasi pekupisa nekumanikidzwa. Prepreg resin inonyorova, inoyerera kuti izadze nzvimbo dzakatenderedza matraces emhangura, uye yozopora zvizere, ichibatanidza macores mubhodhi rimwe chete rakaoma. Macores anopa ma layers akagadzikana, akasimbiswa nedimensionally; prepreg inopa kubatana uye nzvimbo inodzorwa ye dielectric pakati pawo. Ose anofanira kubva musystem yezvinhu zvinoenderana kuitira kuti resin chemistry yavo, giredhi regirazi, uye maitiro ekupisa zvienderane. Basa rinoitwa nezvinhu zvese mukugadzirwa kwepamusoro rinofukidzwa mugwaro redu rePCB rekuverenga materials ane layer yakakwira , uye kumanikidzwa kwekugovera pane laminate iri pasi muongororo yedu yekushomeka kwezvinhu zvePCB.

Zviri Mukati meResin uye Kushanda kweLamination

Hunhu hunotsanangura huwandu hwe resin mu prepreg hunobva mu resin yayo — huwandu hwe resin nejira regirazi, hunoratidzwa sechikamu. Hunhu hwe resin hunosarudza kuti resin yakawanda sei inowanikwa kuti ipinde munzvimbo dzakatenderedza mhangura panguva yekuyeresa, uye inofanira kuenzaniswa ne pateni yemhangura yainosunga. Rutivi rune mhangura inorema kana mapurani akafara runoda prepreg ine resin yakakwana yekuzadza maburi akadzika anosara pakati pezvinhu; resin shoma inosiya maburi asina kuzadzwa anova maburi, uye kuwanda kunogona kukonzera kuyerera kwakanyanya, kusiyana kweukobvu, uye nzara ye resin kune dzimwe nzvimbo.

Zviri mukati meResin zvinogadzirisawo ukobvu hwe dielectric hwakagadziriswa pakati pezvikamu, izvo zvinodzora zvakananga impedance. Ma prepreg maviri ane tsananguro imwechete asi zviri mukati me resin zvakasiyana zvinodzvanya kune ukobvu hwakasiyana uye zvinopa impedance yakasiyana, saka sarudzo ye prepreg chikamu chekuverenga impedance, kwete ruzivo rwakasiyiwa pasi pechitoro. Stack-up chaiyo inotsanangura kuvakwa kwe prepreg - girazi style uye resin content - ye dielectric layer yega yega kuitira kuti kuzadza, ukobvu, uye impedance zvese zvigutsikane pamwe chete. Ndosaka sarudzo ye prepreg isingaparadzaniswe nebasa re impedance uye kusarudza zvinhu zvakatsanangurwa mugwaro redu rekusarudza zvinhu zve PCB rinokurumidza.

Zvinodiwa zvePCB zveHigh Layer Count

Mabhodhi ane ma "high-layer-count" anowedzera kufunga nezve prepreg nekuti kune ma "bonding interfaces" akawanda, ayo anofanirwa kudzvanywa nemazvo kuti bhodhi ripfuure. Sezvo AI ne networking hardware zvave kukwidza nhamba dze "layer" kumusoro - mabhodhi eAI server abva pa "layer" gumi nemasere muna 2023 kuenda ku "layer" makumi matatu nemaviri muna 2025 - zvinodiwa zvekushivirirana pa prepreg fill, ukobvu, uye kunyoresa zvawedzera zvakanyanya. Kusiyana kudiki kwehukobvu hwe "per-layer" kusingakuvadzi pabhodhi rine ma "8-layer" kunoungana mu "layer" makumi matatu nemaviri kuita "total-colourness" yakakura uye "impedance error".

Magadzirirwo aya anowanzo tsanangura masisitimu ezvinhu zvinorasikirwa zvishoma, uko prepreg inofanira kunge iri giredhi rekuderedza zvishoma rinoenderana nemacores anorasikirwa zvishoma, kazhinji ichishandisa HVLP copper yakapfava uye specialty low-Dk glass. Prepreg haigone kuve generic FR-4 grade yakabatana necore inorasikirwa zvishoma; masisitimu eresin anofanirwa kubatana zvakavimbika uye kupa mashandiro emagetsi anotarisirwa. Saka ma stack-up ane layer-count akawanda anotakura zvese zvinodiwa zvemagetsi zvezvinhu zvinorasikirwa zvishoma uye zvinodiwa zvemakanika zvema interfaces mazhinji panguva imwe chete, ndosaka zvichiongororwa nokungwarira zvisati zvagadzirwa. Anogarawo nhaka yekupa kwezvinopinda izvozvo - kushomeka kweCCL kumwe chete uye kushomeka kwecopper foil izvo zvinodzora macores zvinodzora prepreg inoenderana. Zvinodiwa zvakakura zvemabhodhi aya zvakatsanangurwa mugwaro redu reAI server PCB materials.

Njodzi Dzakajairika Dzekuputira Matanda

Kukundikana kwakawanda kwema multilayer kunodzokera kune rimwe rematambudziko mashoma e lamination, uye kusarudza prepreg kuri pakati pechimwe nechimwe. Mavanga anoitika kana pasina kuyerera kwakakwana kwe resin kuzadza nzvimbo dzakatenderedza mhangura, zvichisiya mhepo yakavharirwa iyo inopedza simba re bond uye inogona kutadza kushanda zvakanaka mukupisa. Delamination — kupatsanurwa pakati pezvikamu — kunokonzerwa nekusabatana zvakanaka kwe resin-to-core, kazhinji kubva kumasystem ezvinhu asingaenderane kana pamusoro pezvinhu zvakasvibiswa. Kushaya resin, uko resin shoma inosara pamusoro pezvinhu, kunosiya nzvimbo dzisina kusimba, dzakaoma.

Dzimwe njodzi mbiri dzinowedzera nekuwanda kwezvikamu. Kukanganisa kwekunyoresa zvikamu kubva pane chimwe nechimwe — kusarongeka pakati pezvikamu zvakachekwa — kunowedzera nenhamba yezvikamu uye kufamba kwezvinhu panguva yekudzvanya, uye zvinogona kukonzera kuti ma-vias akaboorwa asawane mapedhi awo. Warpage, kukotama kwebhodhi rapera, kunobva mukuwedzera kwekupisa kusina kuenzana muchikamu uye kubva pakuvaka kusina kuenzana, uye kunoita kuti kuungana kuve kwakaoma. Chimwe nechimwe chezvizvi chinogona kudzivirirwa padanho rekugadzira kuburikidza nekusarudza kwakakodzera prepreg resin-content, kubatana kwakabatana pakati-ne-prepreg, kuvaka kwakaenzana, uye kuunganidzwa kwakasimbiswa — ndosaka ongororo yezvinhu ichikosha kupfuura chero kuedza kupi zvako kwekudzoreredza mushure mekudzvanya. Izvi zvinhu zvemakanika zvinoenderana nezviri mugwaro redu rePCB rekuverenga zvikamu zvakawanda.

Kuwanikwa Kwezvinhu uye Nguva Yekutungamirira

Kuwanikwa kwePrepreg ikozvino kwave dambudziko guru pakugadzirisa nguva, nekuti prepreg inoshandisa resin imwechete, jira regirazi, uye laminate yakakura yakasimbiswa mukati megore ra2025 na2026. Maresini chaiwo akafanana nemagirazi eDK anodzivirirawo core laminate anodzivirirawo prepreg inoenderana, uye maviri acho anofanira kuodha seti inoenderana. Nguva dzebasa muna 2026 dzinoratidza izvi: zvinhu zveFR-4 zvakajairika zvachinja kubva pamavhiki maviri kusvika matatu ekare kuenda kumavhiki angangoita matanhatu kusvika masere, mamakisi ekurasikirwa pakati nepakati uye mashoma kusvika kumavhiki gumi nemana kusvika gumi nemasere, uye mamakisi epamusoro-soro akakosha kuenda pakugoverwa-chete pamavhiki makumi maviri kana anopfuura, ne epoxy resin pachayo inotambanuka kubva pamavhiki matatu kusvika kumavhiki gumi nemashanu.

Mugumisiro unoshanda ndewekuti prepreg ne core zvinofanira kurongwa pamwe chete uye zvisati zvadiwa pakugadzira. Kuraira core ine kurasikirwa kwakaderera pasina kuchengetedza prepreg ine kurasikirwa kwakaderera — kana kuti zvinopesana — kunosiya murwi usingakwanise kudzvanywa. Zvibvumirano zvezvinhu zvemasisitimu ane kurasikirwa kwakaderera zviri kuwedzera kuiswa mavhiki 16-20 pachine nguva, uye mapurogiramu ane huwandu hwakawanda hwemagadzirirwo anoenderana nemagiredhi ehunyanzvi anofanira kubata nguva yekutungamira yezvinhu, kwete mutsetse wekugadzira, sechinhu chinosunga purogiramu. Mufananidzo wakazara wenguva yekutungamira unoratidzwa mugwaro redu rePCB laminate lead time.

Maitiro Ekuongorora Usati Wagadzira

Bhodhi rakavimbika rine ma multilayer rinosarudzwa muongororo ye stack-up, chinhu chisati chaodha chero chinhu. Ongororo iyi inosimbisa kuti dielectric layer yega yega ine prepreg yakagadzirwa ine resin chaiyo ye copper pattern yainosunga; kuti core ne prepreg zvinobva musystem yezvinhu zvinoenderana; kuti ukobvu hwese hwakapedzwa uye hupamhi hwe dielectric pa layer imwe neimwe zvinogadzira target impedance; uye kuti kuvaka kwacho kwakaenzana kudzora warpage. Inosimbisawo kuwanikwa kwezvinhu - kuti core yakatarwa uye prepreg inoenderana inogona kugoverwa mukati menguva yepurogiramu, uye kuti pane yakaenzana yakakodzera iripo apo giredhi rakaganhurirwa.

Ongororo iyi ndipo panoonekwa nekugadziriswa kwehuwandu hwezvinhu zvakawandisa, izvo zvinokosha nekuti chikamu chikuru chemutengo webhodhi nenjodzi zvinovharirwa padanho rekugadzira — nedzimwe fungidziro kusvika ku80% yemutengo webhodhi zvinoonekwa usati watanga kugadzira. Kuchinja kune system ye prepreg ine kurasikirwa kwakaderera uko high-Tg FR-4 yaizoshanda, kana kuratidza kushivirira kwakasimba kwe resin kupfuura zvinodiwa nedhizaini, kunowedzera mukana wemutengo nemugove. Highleap Electronics inoita ongororo yakasimbiswa ye stack-up uye ongororo yekuwanikwa kwezvinhu zvepurogiramu yega yega ine multilayer, saka prepreg ne core zvinosimbiswa pamwe chete zvichienderana nemagetsi uye kuwanikwa kwemagetsi chaiwo usati waisa odha.

Maitiro Akanakisisa Ekugadzira Zvinhu Zvakavimbika

Mamwe maitiro akasiyana-siyana anogara achiparadzanisa mapurogiramu akavimbika e multilayer kubva kune ane matambudziko. Pair core ne prepreg senzira imwe chete pane kusanganisa magiredhi, saka resin chemistry uye thermal behavior zvinoenderana. Sarudza resin content pa layer kuti ienderane ne copper pattern, pane kushandisa prepreg imwe chete zvakaenzana pane stack ine mixed copper weights. Chengeta kuvaka kwakafanana kuti kudzore warpage, kunyanya pamabhodhi ane high-layer-count. Taura magiredhi ekurasikirwa kwakaderera uye specialty chete kana signal rate ichida iwo, uye shandisa hybrid stack-up kuganhurira zvinhu zvepamusoro - uye njodzi yekugoverwa kwayo - kune critical layers.

Kudivi rekupa zvinhu, rongai core uye gadzirirai pamwe chete, isai zvinhu zvakavimbiswa pamberi pezvinodiwa pakugadzira, gadzirai system yechipiri inoenderana nezvinhu kune chero giredhi rakaganhurirwa, uye goverai fungidziro inoenderera mberi kuitira kuti mugadziri agone kuchengetedza mari kubva pakudiwa chaiko. Kubata prepreg sechinhu chakagadzirwa neinjiniya, chine mutoro wekugovera zvinhu - pane jira rekubatanidza zvinhu - ndizvo zvinoita kuti purogiramu ye multilayer ive nenguva uye yakavimbika mumusika wa2026.

Tora Ongororo yeStack-Up yeMultilayer PCB yako

Highleap Electronics ifekitari yekugadzira nekubatanidza maPCB. Mumapurogiramu edu ekugadzira maPCB nemaPCB ane layer yakawanda , tinosimbisa kubatana kwepakati nepamberi, huwandu hwe resin, impedance, uye kuwanikwa kwezvinhu pamwe chete, saka bhodhi rine layer yakawanda rakagadzirwa kuti rirambe rakavimbika kekutanga.

Mibvunzo Inowanzo bvunzwa Nezvezvinhu Zvakagadzirwa Pamberi

Ndeupi musiyano uripo pakati pecore ne prepreg->

Pakati pechinhu ichi ilaminate yakagadzirwa nemhangura yakaputirwa zvakakwana ine denderedzwa remukati rakachekwa. Prepreg ijira regirazi rakazadzwa neresin yakachekwa zvishoma (B-stage) iyo inoyerera uye inosungana kana yapiswa, ichibatanidza denderedzwa mubhodhi rimwe chete panguva yekuchekwa. Macores anopa denderedzwa rakagadzikana; prepreg inopa kubatana uye nzvimbo ye dielectric pakati pawo.

Sei zviri mukati me prepreg resin zvichikosha->

Zviri mu resin zvinotarisa kuti ingani resin inowanikwa kuti ifambe ichitenderedza mhangura panguva yekuyeresa uye zvinosarudza ukobvu hwe dielectric hwakagadziriswa pakati pezvikamu. Inofanira kuenderana ne pateni yemhangura - resin shoma inosiya maburi, yakawanda inokonzera kusiyana kweukobvu - uye nekuti inodzora ukobvu hwe dielectric, inokanganisa zvakananga impedance.

Ndingabatanidza chero prepreg nechero core->

Kwete. Core ne prepreg zvinofanira kubva muhurongwa hwezvinhu zvinoenderana kuitira kuti resin chemistry yavo, giredhi regirazi, uye maitiro ekupisa zvienderane. Kubatanidza core ine kurasikirwa kwakaderera ne generic FR-4 prepreg kunogona kukanganisa kubatana kusina kunaka, kucheka, uye kushanda kwemagetsi zvisirizvo.

Ndezvipi zvinonyanya kukonzera kukundikana kwe lamination->

Hazvina kukwana kuyerera kwe resin, kupatsanurwa kwe resin kubva pakusabatana zvakanaka kwe resin kubva ku core, kushaikwa kwe resin kubva pakusakwana kwe resin pamusoro pezvinhu zvayo, kukanganisa kwekunyoresa kwe layer-to-layer kunokura nekuverenga kwe layer, uye kukanganiswa kwe expansion yekupisa kusina kuenzana kana kugadzirwa kusina kuenzana. Zvizhinji zvinodzivirirwa nekusarudza prepreg nemazvo uye stack-up yakasimbiswa.

Kugadzirira kunobatsira sei nguva yekutungamira muna 2026->

Prepreg inoshandisa resin nejira regirazi zvakafanana ne core laminate uye inofanira kuodwa seti inoenderana. Zvinhu zveFR-4 zvave nemavhiki matanhatu kusvika masere, mamakisi epakati neakaderera kusvika kumavhiki gumi nemana kusvika gumi nemasere, uye mamakisi epamusoro epamusoro kusvika kumavhiki makumi maviri-anopfuura pakugoverwa, saka core ne prepreg zvinofanirwa kurongwa pamwe chete uye kusimbiswa nguva refu kugadzirwa kusati kwaitwa.