Semiconductor Substrate vs PCB: Technical Comparison Guide

ziviso

Semiconductor substrate (inonziwo IC packaging board) uye maPCB akajairwa anotaridzika zvakafanana pakungotarisa, asi anogadzirwa kune akasiyana mitemo. Substrates inoisa pamberi pe-ultra-fine routing, kudziya uye kugadzikana kwakadzikama kwechip packaging, nepo maPCB anotungamira system-level yekubatanidza uye kugadzira.

Gwaro iri rinoenzanisa zvishandiswa, ukobvu, upamhi hwemutsara / nzvimbo, maitiro ekugadzira, uye manyorerwo ekubatsira mainjiniya nekukurumidza kuona mutsauko mu "substrate vs PCB" sarudzo uye kuita sarudzo ine ruzivo.

Semiconductor Substrate vs PCB: Tsanangudzo uye Basa Musiyano

Chii chinonzi Semiconductor Substrate?

Semiconductor substrate, kana IC yekurongedza bhodhi, inoshanda seyakakwira-density yekubatanidza chikuva inotakura zvakananga kufa, mabhora ekutengesa, uye mabumps. Aya mabhodhi anoshanda pa2nd uye 3rd yekurongedza mazinga, achibatanidza nyika ine microscopic yesilicon kune macroscopic realm yesystem yemagetsi.

Chii chinonzi PCB?

Iyo yakadhindwa yedunhu bhodhi inoshanda padanho rehurongwa, kubatanidza mamodule, zvikamu, uye subsystems mukati mechigadzirwa. MaPCB anoshanda pamazinga epamusoro ekurongedza, achipa tsigiro yemagetsi uye yekubatanidza magetsi ezvikamu zvakaunganidzwa zvinosanganisira akaputirwa ICs, zvinongedzo, uye zvinhu zvisingaite.

Hierarchical Positioning

Semiconductor substrates inobata chip-to-package shanduko uko I/O density inosvika zviuru zvekubatanidza pa square centimita. PCBs inobata-package-to-system yekubatanidza uko kusimba kwekubatanidza kunoderera asi kuoma kwebhodhi kunowedzera. Uyu mutsauko wakakosha unotyaira zvese zvinotevera zvinhu, maitiro, uye dhizaini misiyano.

Semiconductor Substrate Material Sarudzo: BT, ABF, uye Ceramic

BT (Bismaleimide-Triazine) Substrates

BT resin inopa yakanyanya kugadzikana yekupisa ine tembiricha yegirazi inodarika 180 ° C uye coefficient yekuwedzera kwekupisa kwakanyatso kuenderana nesilicon. Iyi yakaomesesa semiconductor substrate zvinhu inotonga zvisingadhure zvikumbiro zvinoda pakati nepakati I/O density yeyakajairwa BGA mapakeji uye yepakati-renji processors.

ABF (Ajinomoto Kuvaka-Up Firimu) Substrates

ABF inomiririra iyo premium semiconductor substrate zvinhu zvepamusoro-kuita maapplication. Iyi dielectric yakaonda-firimu inogonesa upamhi hwemutsara pazasi 15 μm uye inotsigira yekupedzisira-yakakwirira I/O density inodiwa ne advanced CPUs uye maGPU. ABF's yakaderera dielectric inogara ichichengetedza chiratidzo chekutendeseka pane akawanda-gigahertz frequencies uku ichichengetedza laser-drill inoenderana yemicro-vias.

Ceramic uye Metal-Core Alternatives

Zvigadziko zveCeramic zvinopa simba repamusoro rekupisa uye CTE yakaderera zvakanyanya pakushandisa simba guru asi zvinotarisana nekuomarara uye mitengo yakaderera. Sarudzo dzesimbi-core dzinopa simba rekupisa rakawedzerwa kuburikidza nearuminiyamu kana mhangura, zvichinanga kumagetsi emagetsi uko kutonga kwekupisa kunopfuura zvinodiwa nepitch yakanaka.

Zvishandiso zvePCB zvakajairika (FR-4)

FR-4 inoramba iri chinhu chinoshandiswa pakugadzira maPCB echinyakare, ichipa hunhu hwemagetsi hunogamuchirwa uye hunoshanda zvakanaka pamutengo. Standard FR-4 inoshandira mabhodhi ehurongwa uko upamhi hwemitsara hunopfuura 75 μm uye zvinodiwa pakupisa zvinoramba zviri pakati nepakati. Mhando dzePCB dzinoshanda zvakanyanya dzinosanganisira high-Tg FR-4 nepolyimide yekushandiswa kwakasarudzika asi hazvigone kuenzana nehunyanzvi hwe semiconductor substrate.

Material Kuenzanisa Tafura

Semiconductor Substrate Geometric Zvinotsanangurwa: Hukobvu, Mutsetse Wemutsetse, uye Via Technology.

Line Width uye Spacing Kugona

Semiconductor substrate mutsara upamhi uye spacing inowanzosvika 30 μm kana yakanatswa, ine zvigadzirwa zvepamberi zvinowana 10-15 μm yekucheka-kumucheto maapplication. Yakajairwa yekutengesa FR-4 PCBs inoshanda pa75-150 μm (3-6 mil) kugona, nepo HDI PCBs inogona kusvika makumi mashanu μm asi ichiri kusara kumashure semiconductor substrate performance.

Bhodhi Makobvu Zvinodiwa

IC yekurongedza ma substrates anowanzo kuyera 0.3-0.5 mm gobvu zvichienderana nerudzi rwepakeji, kuderedza kureba kwenzira yechiratidzo uye kuderedza parasitic inductance. MaPCB akajairika anowanzo shandisa 0.6-1.6 mm ukobvu, ane 1.6 mm yakajairwa yevatengi uye maindasitiri maapplication. Iyo yakaonda semiconductor substrate mbiri inoderedza warpage njodzi panguva yekuyerera.

Micro Via Technology uye Pitch

Semiconductor substrates inoshandisa laser-drilled micro-vias inogonesa dense interconnect kutiza nzira:

• Via dhayamita - 25-50 μm maringe ne200-400 μm mune yakajairika PCBs
• Via pitch -Pazasi pe100 μm inogonesa nzira pasi petsoka dzekufa
• Stacking kugona -Sequential kuvaka-up inotsigira akawanda akaturikidzana vias
• Kuonekwa reshiyo -Yakadzika mareshiyo nekuda kwekutetepa dielectric layers inovandudza kuvimbika

Layer Count uye Build-Up Chimiro

Mazuva ano semiconductor substrates anosanganisira 4-20 layers ine sequential kuvaka-up tekinoroji inowedzera ultra-thin dielectric layer. Imwe neimwe yekuvaka-up layer inoyera 15-30 μm ichienzaniswa ne50-100 μm prepreg maseru mune akajairwa PCB stackups. Izvi zvinobvumira ma substrates kuti awane yakakwira routing density mukati mehutete hwese profiles.

Semiconductor Substrate Manufacturing Maitiro: MSAP vs Zvakajairwa Nzira

Modified Semi-Additive process (MSAP)

MSAP inogonesa semiconductor substrate yakanaka-mutsara kugona nekuisa yakaonda mhodzi yemhangura, kushandisa photoresist mapatani, electroplating conductor traces, wozobvisa mhodzi pakati pezvitsva. Iyi yekuwedzera nzira inoburitsa mutsara wakafara pazasi makumi matatu μm nekuti pateni etching inobvisa shoma mhangura pane kutsanangura maficha kuburikidza nekuwanda kwemhangura etching.

Yakajairika PCB Inobvisa Maitiro

Kugadzira PCB kwakajairika kunoshandisa nzira dzekubvisa zvinhu apo kufukidza mhangura yakazara kunobviswa nenzira yakasarudzwa uchishandisa masks ekudzivirira kupenya. Nzira iyi inoshanda zvinobudirira kune hupamhi hwemitsara inodarika 75 μm asi inotambura ne geometries dzakapfava nekuda kwemiganhu ye etch factor. Nzira yekubvisa zvinhu inopa kukurumidza kubuda kwezvinhu uye mutengo wakaderera kune mashandisirwo epakati nepakati.

Advanced Surface Inopedzisa

Semiconductor substrates inonyanya kushandisa ENEPIG (Electroless Nickel Electroless Palladium Immersion Goridhe) kupedzisa kwepamusoro kunopa kutengesa kwakanakisa, kuenderana newaya, uye kushomeka kwecorrosion kune yakanaka-pitch application. MaPCB akajairwa anowanzo shandisa HASL, ENIG, kana OSP zvichienderana nemutengo uye kuita zvinodiwa.

Laser Drilling uye Sequential Lamination

Semiconductor substrate kugadzira inotsamira pa CO2 kana UV laser drilling kune chaiyo micro-kuburikidza nekuumbwa pasina mechanical stress. Sequential lamination inovaka zvidimbu zvega, kuve nechokwadi chekunyoresa uye kubvumidza akasiyana epakati makobvu. Yakajairwa PCB misa yekumisikidza uye mekiniki yekuchera sutu yakakura maficha asi haigone kuwana semiconductor substrate chaiyo.

Semiconductor Substrate Performance: Magetsi, Thermal, uye Kuvimbika

Mashandiro Emagetsi Zvinodiwa

Ma semiconductor substrates anotarisira nzira yakakosha yekutanga kubva pamabhora ekufa kuenda kumapakeji, zvichida tight impedance control (±10%) uye kurasikirwa kushoma kwesignali pamulti-gigahertz frequency. Low dielectric constant uye dissipation factor materials anochengetedza signal integrity pakati pema short asi dense interconnects. Ma PCB anobata traces refu ne relaxed tolerances apo impedance control inotarisa ±15-20%. Pakurongedza kweorganic build-up, ABF build-up substrates uye PCB interface yavo inotsanangura musiyano uripo pakati pe package interconnect ne system board.

Thermal Management Kufunga

Substrate thermal dhizaini inosimbisa yakaderera kupisa kwekudzivirira nzira kubva pakufa kusvika pakupisa kuparadzira kuburikidza nematepi dielectric layer, thermal vias, uye masimbi-akazadzwa zvimiro. Iyo yakaonda mbiri uye yakakwira kuburikidza ne density inogonesa kudziya kupisa kupararira. PCBs dzinosanganisira thermal vias uye ndege dzemhangura asi dzinotarisa pane chikamu-chikamu chekupisa kupisa kwete kunanga kufa kwemafuta manejimendi.

Mechanical Kuvimbika uye CTE Matching

Semiconductor substrates inopinda zvakanyanya kupisa bhasikoro panguva yekuyerera (260 ° C peak) uye kushanda tembiricha inoshanduka:

• CTE kuenzanisa - Yakaderera CTE zvinhu zvakafananidzwa nesilicon (2.6 ppm/°C) inodzivirira solder joint kuneta
• Warpage control -Bow Bow inogumira ku <0.3% yediagonal dimension
• Kunetseka kweropa -Akawanda kutenderera kutenderera uye tembiricha yakanyanyisa inoda kugadzikana kwepamusoro
• Solder joint kuvimbika -Yakanaka-pitch yekubatanidza inoda inowirirana planarity uye pamusoro pekupedzisira mhando

Standard Kuvimbika Testing

Semiconductor substrate qualification inosanganisira JEDEC-yakajairwa thermal cycling (-55 ° C kusvika +125 ° C, 500-1000 cycles), mwando senitivity level kuyedzwa, uye yakakwirira-tembiricha kuchengetedza. Kuvimbika kwakabatana kweSolder kunogamuchira kuongororwa kuburikidza nebhora rekugera uye kuyedzwa kwekudhonza. PCB kuvimbika kuyedzwa inovhara nharaunda dzakafanana neyakagadzika yekugamuchira maitiro inoratidza system-level zvinodiwa.

Semiconductor Substrate Application Scenarios

High-Performance Computing Applications

MaCPU nemaGPU emhando yepamusoro anoshandisa masubstrate eABF kuti agone kubatanidza zviuru zveI/O pafine pitch ukuwo achichengetedza signal integrity yeDDR5, PCIe Gen5, nedzimwe high-speed interfaces. Mapakeji eHigh-bandwidth memory (HBM) anoda masubstrate e ultra-fine-pitch semiconductor anogonesa through-silicon-via (TSV) interconnection. System-in-package uye multi-chip modules zvinobatanidza ma dies akawanda pa shared substrates.

Yakajairika PCB Zvikumbiro

Mabhodhi eamai nemabhodhi ehurongwa anobatanidza zvinhu zvakaiswa mumapuranga, zvinobatanidza, uye mamodule achishandisa tekinoroji yePCB yemazuva ano uko kuwanda kwekubatana kunobvumira maitiro akajairwa ekugadzira. Makombiyuta emagetsi anofarira maPCB emhangura anorema kana maPCB esimbi anopa simba rekutakura magetsi uye kupisa pasina kuda nzira yekufambisa zvinhu zvakanaka. Makombiyuta emagetsi evatengi uye masisitimu emotokari anonyanya kushandisa maPCB eFR-4 achienzanisa mashandiro nemutengo.

Technology Selection Mienzaniso

A flagship processor inoda ABF substrate nekuti 4000+ I/O yekubatanidza pa 0.35 mm bhora pitch inoda sub-30 μm mutsara upamhi uye hukuru hwemagetsi kushanda. Iyo inverter yemagetsi inoshandisa gobvu-mhangura FR-4 PCB nekuti yayo 100-200 yekubatanidza inoisa pamberi kubata kwazvino pamusoro pehuwandu hwenzira. Iyo smartphone inoshandisa HDI PCB tekinoroji inoswedera kune substrate-senge hunyanzvi hwekubatanidzwa kwechikamu asi inomira pfupi yechokwadi semiconductor substrate zvinodiwa.

Injiniya Yekusarudza Nhungamiro: Semiconductor Substrate vs PCB Sarudzo Zvinhu

I/O Density uye Bhora Pitch Evaluation

Zvikumbiro zvinoda bhora pazasi 0.5 mm nekuverenga kuverenga kunodarika 1000 I/O kazhinji inoraira semiconductor substrate tekinoroji. Verenga machaneti anoshanda anowanikwa pakati pemabhora uchishandisa upamhi hwemutsara uye kugona kwepakati kuti uone kana nzira yekutiza inoramba ichigoneka nePCB tekinoroji.

Line Width uye Spacing Zvinodiwa

Kana dhizaini mitemo ichida upamhi hwemutsara pazasi makumi mashanu μm, akajairwa PCB maitiro anova asingaite uye semiconductor substrate kana substrate-senge PCB (SLP) tekinoroji inove yakakosha. SLP inomiririra nzira yepakati uchishandisa yakagadziridzwa PCB maitiro kuti uwane 30-50 μm maficha pamutengo wakaderera pane yakazara semiconductor substrates.

Thermal uye Kuvimbika Kufunga

High-simba density applications (> 1 W/mm²) yakasanganiswa ne frequency-sensitive masiginecha inofarira semiconductor substrates ine yepamusoro yekupisa uye yemagetsi kuita. Zvishandiso zvinosangana nekunyanya kupisa bhasikoro kana zvinoda kuvimbika kweJEDEC-chikamu chinoda substrate zvinhu uye CTE inofananidzwa. Zvishandiso zvinodhura zvinogamuchira PCB yekupisa kupisa uye shandisa yakagadziridzwa kutonhora mhinduro.

Mutengo uye Kukwanisa Kugadzira

Zvinhu zvakakosha zvehupfumi uye zvekugadzira pakusarudza semiconductor substrates:

• Musiyano wemitengo - Substrates inodhura 3-10 × kupfuura yakaenzana-layer PCBs nekuda kwezvinhu zvepamberi uye kugadzirisa.
• Lead nguva - 8-12 mavhiki ema substrates maringe nemavhiki maviri-4 ePCBs anokanganisa kutenderera
• Kufunga kwehuwandu -Kugadzirwa kwepamusoro-vhoriyamu kunogona kururamisa kudyara kwe substrate apo zvinodiwa zvekuita hazvigone kuzadzikiswa neimwe nzira
• Supplier kugona -Simbisa kugona kweMSAP, ENEPIG plating ruzivo, uye micro-kuburikidza nehunyanzvi hwekuchera usati waita

mhedziso

Kusarudza pakati pe semiconductor substrate nePCB zvinoenderana neI/O density, mutsara wehupamhi zvinodiwa, zvinodikanwa zvekupisa, uye kunetsa kwemitengo. Semiconductor substrates inokwirisa pakurongedzerwa kwechip-level uko ultra-fine pitch, high connection density, uye kushanda kwemagetsi kwepamusoro kunopembedza mitengo yakakwira. MaPCB akajairwa anoramba ari akanyanya kusanganisa-danho rekubatanidza uko zvine mwero density, yakasimbiswa kugadzirwa, uye mutengo wakanaka zvinosangana nezvinodiwa zvekushandisa.

Kudyidzana neHighleap Electronics

Semunhu ane ruzivo PCB mugadziri uye mupi wegungano, Highleap Electronics inopa mhinduro dzakakwana pane ese tekinoroji spectrum:

• Yepamberi HDI PCB kugadzira -Yakanaka-mutsara kugona kunosvika substrate-kunge kuita kwekuda maapplication
• Multi-layer PCB hunyanzvi - Complex stackups kubva prototypes kuburikidza nepamusoro-vhoriyamu kugadzirwa
• Dhizaini yekugadzira -Injiniya rutsigiro kukwirisa madhizaini emutengo uye chiyero chekuita
• Substrate kutsvaga kudyidzana -Kubatanidza neakasarudzika substrate vatengesi kune zvakabatanidzwa mhinduro
• Pedzisa gungano masevhisi -PCB yekugadzira kuburikidza nekupedzisira chigadzirwa kusangana pasi pedenga rimwe

Bata timu yedu yeinjiniya kuti mukurukure zvinodiwa pabasa renyu. Tichakubatsirai kuongorora kana tekinoroji yepamusoro yePCB kana semiconductor substrate integration zvichibatsira zvakanyanya application yenyu, tobva takupai mhinduro yakakwana yekushanda kwenyu uye zvinangwa zvenyu zvebhajeti.

Mibvunzo Inowanzo bvunzwa: Semiconductor Substrate vs PCB Sarudzo

1. Ko PCB Inogona Kushandiswa Se Substrate?

MaPCB akajairwa haakwanise kutsiva semiconductor substrates yeakakwira-I/O-density maapplication nekuda kweiyo yakakosha mutsara upamhi uye kuburikidza nekugumira. Substrate-yakafanana nePCB tekinoroji inobhuroka gap repakati-density maapplication, kuwana 30-50 μm maficha uchishandisa yakagadziridzwa maitiro. Yechokwadi semiconductor substrate performance inoda yakatsaurwa zvinhu uye MSAP kugadzira.

2. Nguva Yekusarudza ABF vs BT Substrates?

Sarudza ABF yezvishandiso zvinoda Ultra-yakanaka pitch (pazasi 25 μm mutsara upamhi), yakakwirira-kumhanya kusaina pamusoro pegumi Gbps, kana I/O inodarika zviuru zviviri zvekubatanidza. Sarudza BT yezvishandiso zvinodhura zvine mwero I/O density uye yakajairwa BGA mapakeji. ABF inodhura 30-50% kupfuura BT asi inova yakakosha kune yekucheka-kumucheto processor uye memory application.

3. Chii Chinotsanangura Substrate-SePCB (SLP)?

PCB yakaita sesubstrate inoshandisa maitiro ePCB akagadziriswa kuti iwane maficha akanaka kupfuura ekugadzirwa kwemazuva ese asi isina kugona kwakazara kweMSAP. SLP inowanzo kupa 40-60 μm mutsetse wakafara uchishandisa nzira dzakatetepa dzemhangura uye dzakadzorwa dzekuchekerera kana nzira dzekuwedzera zvishoma. Iyi nzira inokodzera mashandisirwo anoda kushanda kwePCB kuri nani pane kwakajairika pasina kutsanangura mutengo wakazara we semiconductor substrate.