BGA vs. LGA: Musiyano Mukuru muTekinoroji yePakeji yePCB Assembly

1. Nhanganyaya: Sei Kuenzanisa Mapakeji eBGA neLGA

BGA neLGA zvinomiririra mafomati maviri epamusoro ekurongedza epamusoro mumagetsi ane huwandu hwakawanda. Ose anobvisa ma leads akafumurwa, zvichiita kuti pitch ive yakanaka uye huwandu hwakawanda hweI/O hunokosha kumasevha, zvishandiso zvevatengi, michina yekutaurirana, uye mapuratifomu emakombiyuta anoshanda zvakanyanya.

Pasinei nekufanana kwadzo kwekunze, BGA vs. LGA inoratidza musiyano mukuru muhurongwa hwekubatanidza, maitiro emakanika, uye zvinodiwa pakugadzira. Kunzwisisa musiyano uyu kwakakosha kune mainjiniya vanoongorora kusarudzwa kwemapakeji zvichienderana nezvinodiwa zvemagetsi, zvemakanika, uye zvekugadzira.

2. Tsananguro Dzekutanga: Chii chinonzi BGA uye Chii chinonzi LGA

2.1 Chii chinonzi BGA Package

Pakeji yeBall Grid Array (BGA) ine mabhora e solder akarongwa mu grid pattern pasi pe package. Mabhora aya e solder anoshanda mabasa maviri: kugadzira nzira dzemagetsi uye kupa mechanical attachment ku PCB. Panguva yekusvetedza zvakare, mabhora anonyunguduka uye anoumba zvisungo zve metallurgical zvinogara zviripo nema PCB pads anoenderana. Ma compositions akajairika e solder anosanganisira SnAgCu alloys, ane pitch values ​​anowanzo tangira pa 0.4mm kusvika 1.27mm zvichienderana nezvinodiwa ne application density.

2.2 Chii chinonzi LGA Package

Pakeji yeLand Grid Array (LGA) ine mapadhi esimbi akatsetseka (anowira) pasi payo pasina zvinhu zvakasungirirwa. Pakeji yacho pachayo haina solder; pachinzvimbo, kubatana kwemagetsi nekwemakanika kunoenderana nemidziyo yekunze yakadai semasoketi, mapini echitubu, kana kumanikidzwa kwekumanikidza. Musiyano uyu—kunyangwe solder iri chinhu chakakosha papakeji—ndiwo unoumba mutsetse wekuparadzanisa pakati peBGA neLGA architectures.

3. Kusiyana Kwemaumbirwo Pakati peBGA neLGA

3.1 Nzira yekubatanidza BGA vs. LGA

Nzira yekubatanidza inotsanangura musiyano mukuru wechimiro mukuenzanisa kweBGA neLGA. Mapakeji eBGA anoshandisa mabhora ekusolder anogadzira majoini anogara aripo kuburikidza nekudzokorodza, achibatanidza paki kuPCB zvisingadzoreki pasi pemamiriro ezvinhu akajairwa. Mapakeji eLGA anobatanidza kuburikidza nekubatana kwakavakirwa pakumanikidzwa—simbi inodzvanya papini dzemasoketi kana maPCB pads pasi pesimba remakanika. Izvi zvinoguma nekubatana kunobviswa kana kuti kunogara kwenguva pfupi kusingadi kusunganidzwa kwepakeji zvakananga.

3.2 Hunhu hweKugadzikana kweMichina

Majoini eBGA solder anogovera kushushikana kwemuchina zvakaenzana muhurongwa hwese, kunyangwe achiramba achinzwa kusimba kwebhodhi uye kuneta kwekupisa. Kusimba kwemuchina weLGA kunoenderana zvakanyanya nekugadzirwa kwesoketi, nzira dzekuchengetedza, uye kushivirira kwekubatana. Kuramba kuzununguka mumasisitimu eLGA kunoenderana zvakananga nekusimba kwekubatanidza uye kushanda kwechitubu chekubatana pane simbi yejoini.

4. Kuenzanisa Mashandiro Emagetsi: BGA vs. LGA

4.1 Kufunga Nezvekuvimbika Kwechiratidzo

Mapakeji eBGA anopa mukana wekuti parasitic inductance ienderane uye capacitance ifanotaurwa nekuda kwe geometry yebhora re solder rakagadzika uye kukwirira. Aya ma parameter anoramba akagadzikana mumayunitsi ekugadzira. Kusabatana kweLGA kunosiyana zvichienderana nekumanikidzwa kwakashandiswa, kuchena kwenzvimbo, uye kupfeka kwekubatana nekufamba kwenguva. Kune mashandisirwo e-frequency yakakwira, kusiyana uku kunoda kutsanangurwa kwakanyatsonaka kwesoketi kuti ichengetedze kusimba kwechiratidzo pane interface.

4.2 Kugoverwa Kwemagetsi Nepasi

Magadzirirwo eBGA anogamuchira nyore nyore mabasa emagetsi akagoverwa uye epasi muhurongwa hwese, zvichitsigira ma network ekutumira ma "low-impedance". Mapakeji eLGA anogona kuwana huwandu hwakawanda hwema "pin" mukati me "footprints" dzakaenzana, chinhu chinoita kuti ashandiswe muma "processors" emhando yepamusoro uko kutumirwa kwemagetsi kunoda mazana ekubatanidza kwakazvipira. Mafomati ese ari maviri anotsigira kugoverwa kwesimba kwakasimba kana akagadzirwa nemazvo.

6. Kubatanidzwa uye Kugadzirwa Kwazvo

6.1 Maitiro ekugadzira PCB yeBGA neLGA

Kubatanidzwa kweBGA kunoda kusungirirwazve kwemvura nekupisa kwakanyatsojeka. Kuongorora mushure mekuyerera kwemvura kunowanzo shandisa X-ray imaging kuti ione nzvimbo dzisina chinhu, mabhiriji, kana majoini asina kukwana pasi pepakeji. Kugadziriswazve kwemvura kunosanganisira michina yakasarudzika uye kunotakura njodzi yekubuda kwemvura.

Kubatanidzwa kweLGA kunobvisa zvinodiwa zvekudzoreredza pasuru pachayo; kuiswa kwemasokisi uye kuiswa kwehardware yekuchengetedza kunotsiva mashandiro ekusonesa, zvichiita kuti zvive nyore kutsiva zvikamu.

6.2 Zvinhu Zvinoita Kuti Pave Nezvibereko Uye Kuvimbika

Zvinetso zveBGA goho zvinosanganisira kuvharirwa kwe solder, zvikanganiso zvemusoro-mu-pillow, uye kuputika kwenguva refu kwekupisa. Matambudziko ekuvimbika kweLGA anotarisa pakuoxidation ye contact oxidation, kupinda kwetsvina, uye kuora kwe contact force zvishoma nezvishoma.

Rudzi rwepakeji yega yega ine nzira dzakasiyana dzekukundikana dzinoda maitiro akakodzera ekuongorora uye kudzora nharaunda panguva yekugadzira uye kuiswa mumunda.

7. Kufunga Nezvemutengo uye Kutenderera Kwehupenyu

7.1 Mutengo wekutanga kana wenguva refu

Mapakeji eBGA anowanzo dhura mari shoma yezvikamu asi mari yakawanda yekugadzirisa patsva kana paine zvikanganiso. Maitiro eLGA anoda kutenga socket - kuwedzera mari yakawanda - asi kunogonesa nzira dzekugadzirisa nekutsiva nzvimbo dzakagadzirwa zvakanaka. Kuongorora mari yese kunofanirwa kuyera mari yekutanga yezvinhu nekushandisa pakugadzirisa zvinhu.

7.2 Maonero Ehupenyu Hwechigadzirwa

Kurongedza kweBGA kunokodzera zvigadzirwa zvevatengi zvakawanda zvakagadzirirwa hupenyu hwekugadzira kamwe chete uko kushanda kwemumunda kusingakoshi. LGA inobudirira mumapuratifomu anoda nguva yakareba yebasa, kuvandudzwa kwema processor, kana kugadziriswa kwenzvimbo yedhipoziti—hunhu hunowanikwa mumasevha ebhizinesi, vanodzora maindasitiri, uye zvivakwa zvekutaurirana.

8. Mashandisirwo Akajairika eBGA neLGA

Zvinodiwa pakushandisa zvinosimudzira kusarudzwa kwemapakeji pane kunaka kwemapakeji. BGA ndiyo inonyanya kukosha mumafoni, ma networking modules, embedded systems , uye consumer electronics uko permanent assembly inoenderana ne product architecture. LGA ndiyo inonyanya kukosha mu server CPUs, workstation processors, uye upgradeable computing platforms uko socket-based installation inotsigira hardware evolution uye serviceability mandates.

9. Maitiro Ekusarudza Pakati peBGA neLGA

Maitiro ekusarudza BGA vs. LGA anofanira kutarisa zvinhu zvakasiyana-siyana zvesarudzo:

• Ko application yacho inoda zvinhu zvinotsiviwa nemunda here?
• Maitiro ekugadzira anogona here kugamuchira kuomarara kwekugadziriswazve kwesimbi?
• Kuwanda kwepini kunopfuura miganhu inoshanda yehuwandu hweBGA here?
• Pane zvinodiwa zvakasimba here zvekugadzirisa kana kusimudzira?

Kupindura mibvunzo iyi kunotungamira kutsanangurwa kwakakodzera kwemapakeji kunoenderana nezvinangwa zvechigadzirwa uye kugona kugadzira.

10. Pfupiso: Musiyano Mukuru Pakati peBGA neLGA

Musiyano mukuru uripo mu tekinoroji yeBGA vs. LGA hausi pakurongwa kwekushanda asi mupfungwa dzekubatana: BGA inoshandisa solder integral kuti ishandiswe zvachose nePCB ukuwo LGA ichivimba nekubatana kwekunze kwekumanikidzwa kuti ikwanise kubviswa. Musiyano uyu mukuru unobva mumaitiro ekubatanidza , maprofiles ekuvimbika, sarudzo dzekugadzirisa, uye maumbirwo emari. Mainjiniya anofanirwa kuongorora zvinhu izvi zvichienderana nezvinodiwa zvekushandisa pane kutsvaga mazano epasi rose.