Dhizaini yePCB yeBurn-In Board yeKuedza Kuvimbika

ziviso

Burn-in Board PCB ipuratifomu yakakosha yekuyedza inoshandiswa mu semiconductor kuvimbika kwekuongorora, yakagadzirirwa kutsungirira kureba kwepamusoro-tembiricha uye yakakwirira-mutoro mamiriro panguva yekupisa-mukuyedza. Aya mabhodhi edunhu akasarudzika anogonesa vagadziri kuti vaone kutadza kwehupenyu hwepakutanga mumaseketi akabatanidzwa nekuisa pasi pekukurumidza kushushikana mamiriro anotevedzera makore ekushanda kwakajairika.

Munguva yekutsva-mukuyedzwa, machipisi anoshanda nguva dzose patembiricha yakakwira ichiri pasi pemagetsi akazara, achiratidza hurema hunogona kuitika michina isati yasvika vatengi vekupedzisira. Ichi chinyorwa chinoongorora zvakakosha dhizaini yekutarisisa, zvinhu zvinodiwa, uye zviyero zvekugadzira izvo zvinoita kuti Burn-in Board PCBs ibudise mhedzisiro uye inodzokororwa bvunzo mhinduro.

Chii chinonzi Burn-in Board PCB?

Iyo Burn-in Board PCB inoshanda seyakazvitsaurira bvunzo gadziriso yakagadziridzwa yakanangana nekupisa-mukuvimbika kuyedzwa mukugadzira semiconductor. Kusiyana nemabhodhi ebvunzo akajairwa, mapuratifomu aya anofanirwa kuchengetedza kugadzikana kwemagetsi uye mechaniki apo ichishanda ichienderera munzvimbo dzinopisa zvakanyanya.

Mamiriro ekuyedza ekutsva anotangira pa125°C kusvika pa150°C kwenguva dzinobva pa72 kusvika pa168 hours. Basa rekutanga remabhodhi aya kuona kutadza kwekufa kwevacheche nekuisa kusagadzikana kwemagetsi patembiricha yakakwira, zvichibvumira vagadziri kuti vatarise michina yakakanganisika isati yatumirwa.

MaPCB eBurn-in Board akasiyana zvakanyanya nemabhodhi ekutakura zvinhu nemakadhi eprobe . Kunyange zvazvo mabhodhi ekutakura zvinhu achinyanya kutarisa pakuedza kushanda pakupisa kwekunze uye makadhi eprobe achikoshesa kusimba kwechiratidzo panguva yekuedzwa kwewafer-level, mabhodhi eBurn-in anosimbisa kutsungirira kwekupisa uye kugadzikana kwenguva refu pasi pekumanikidzwa kwekupisa kunoramba kuripo.

Burn-in Testing Environment uye PCB Zvinodiwa

High-Temperature Ovheni Kuenderana

Burn-in Board PCBs anoshanda mukati memakamuri ehovhoni akagadzirirwa kuchengetedza chaiyo tembiricha yekudzora mukati mehombe bvunzo mavhoriyamu. Aya mabhodhi anofanirwa kukwana akajairwa ovheni racks achigadzirisa kuwedzera kwekupisa panguva yekushisa bhasikoro. Kuenderana kweChamber kunoda kutarisisa hukuru hwebhodhi, kukwirisa maburi nzvimbo, uye kucheneswa kwekuyerera kwemhepo kwakatenderedza midziyo ine vanhu.

Thermal Cycling uye Mechanical Stress

Kudzokorora kwekupisa kunoitika panguva yekuedzwa kwekupisa kunounza kushushikana kukuru kwemuchina kuburikidza nekusiyana kwekuwedzera kwekupisa. Mabhodhi anosangana nematanho akawanda ekupisa nekutonhodza muhupenyu hwavo hwese, uye kutenderera kwega kwega kunogona kukonzera kutsemuka kwemajoini e solder kana kucheka kwe trace. Dhizaini inofanira kutsanangura kushushikana uku kuburikidza nekuunganidzwa kwezvikamu zve layer uye strategic kuburikidza nekuisa.

Kusarudzwa kwezvinhu zveBurn-in Board PCBs

Kusarudzwa kwezvinhu zvinomiririra sarudzo yakanyanya kuoma muBurn-in Board PCB dhizaini, ichinyatso tarisa mashandiro emafuta uye hupenyu hwekushanda. Iyo laminate inofanirwa kuchengetedza hunhu hwemagetsi uye zvivakwa zvemagetsi mukati memazana emaawa pakupisa kwakanyanya.

Peji rino rinotarisa paPCB nemidziyo yemagetsi inoshandiswa panguva yekuedza kushushikana kwekuvimbika. Kuti uwane nzira yakakura yekuedza uye kuyerera kwemaitiro, tarisa ongororo yekuedza kwakatsva ; kuti usimbise bhodhi rakaunganidzwa, batanidza hurongwa hwemagetsi nerutsigiro rwekuedza runoshanda.

Polyimide Laminates

Zvinhu zvakagadzirwa nepolyimide zvinopa kugadzikana kwakanyanya kwekupisa nekupisa kwegirazi kunodarika 250°C, zvichiita kuti zvive zvakanaka kune zvinoshandiswa zvakanyanya pakutsva. Zvinhu izvi zvinoratidza kugadzikana kwakanaka uye kuwedzera kwekupisa kwakaderera pa30-50 ppm/°C, zvichideredza kupwanyika kwebhodhi panguva yekupisa kwenguva refu.

FR-408HR uye High-Tg Alternatives

FR-408HR kubva kuIsola inopa imwe mhinduro ine girazi shanduko tembiricha ye180 ° C uye yakaderera kunyura hunyoro uchienzaniswa neyakajairwa FR-4 zvinhu. Laminate iyi inochengetedza zvinhu zvemagetsi zvinovimbika patembiricha inosvika 150°C uku ichipa mabhenefiti emitengo pamusoro pezvivakwa zvepolyimide zvekushandisa zvishoma.

Metal Core Solutions

Pamashandisirwo anoda kupiswa kwesimba zvakanyanya, simbi iri pakati kana kuti zvinhu zvinosimbiswa nekupisa zvinosanganisa aruminiyamu kana mhangura zvinosimudzira kupararira kwekupisa. Zvinhu izvi zvinopa kufambiswa kwekupisa kwe1-5 W/mK zvichienzaniswa ne0.3 W/mK yema laminates akajairwa, zvichiita kuti tembiricha ive yakafanana pamusoro peBurn-in Board.

Mainjiniya anofanirwa kukumbira mishumo yekuchembera kubva kune PCB vatengesi vachinyora laminate performance mushure memaawa mazana mashanu kusvika ku1000 ekuenderera mberi kwekuratidzwa pane yakatarwa tembiricha yekushandisa.

Yakakwirira-Simba Trace uye Pad Dhizaini yeBurn-in Boards

Tevera Upamhi uye Huremu hweMhangura

Burn-in Board PCBs dzinofanirwa kuendesa zvakakura zvazvino kune akawanda maturusi anoshanda panguva imwe chete pamazinga emagetsi akawanda. Simba rekugovera dhizaini kufunga kunosanganisira:

• Kuvaka mhangura inorema - 2-ounce kana 3-ounce huremu hwemhangura inoderedza kurasikirwa kwekudzivirira uye kukwira kwekushisa panguva yekuenderera mberi kwekushanda.
• Yakafara trace kuverenga - Tembiricha iri padyo ne150°C inoda maconductor akafara zvakanyanya kupfuura madhizaini akaenzana ekamuri-tembiricha.
• Thermal kuburikidza arrays -Kuiswa kwehunyanzvi pasi pematanho emagetsi kunofambisa kupisa kupisa mundege dzendarira dzemukati.
• Kupisa-kuparadzira zvidimbu -Ndege dzendarira dzemukati dzinogadzira nzira dzakaderera dzekupisa dzinodzivirira nzvimbo dzinopisa dzinopisa.

Surface Pedzisa Sarudzo

Pad yepamusoro inopera inofanira kumira oxidation uye kuchengetedza solderability kuburikidza neakawanda ekupisa kutenderera. Electroless nickel kunyudzwa goridhe inopa kusimba kwakanyanya neyakajairwa nickel ukobvu hwe3-6 microns uye goridhe kupenya kwe0.05-0.1 microns. Kuiswa kwegoridhe rakaomarara pamapadhi ekubatanidza kunovimbisa kuvimbika kusangana nekupokana kuburikidza nemazana emadhiraini ekuisa munzvimbo dzepamusoro-tembiricha.

Organic solderability preservatives inopa mabhenefiti emutengo asi inoda kuongororwa kwekudzikama kwekupisa, sezvo maOSP maumbirwo mazhinji anotanga kuderera pamusoro pe130 ° C panguva yekuwedzera.

Chibatanidza uye Socket Dhizaini yeBurn-in Board PCBs

Yepamusoro-tembiricha yekubatanidza masisitimu inomiririra yakakosha kuvimbika zvinhu muBurn-in Board kuvaka. Dzimba dzekubatanidza dzinofanirwa kushandisa michina yemhando yepamusoro-soro senge polyphenylene sulfide kana liquid crystal polymer inochengetedza simba remuchina rinopfuura 150°C.

Kubata simbi kunoda kuputirwa negoridhe pamusoro penickel kana phosphor bronze base zvinhu kuti ive nechokwadi chakasimba chekubata kuramba mukati mekupisa bhasikoro. Yakajairwa tin-plated contacts oxidize nekukurumidza pakupisa-mukati tembiricha, zvichitungamira kune inopindirana yekubatanidza uye yenhema mhinduro dzebvunzo.

Mechanical retention masisitimu anochengetedza Burn-in Boards mukati mezvigadziriso zveovheni achishandisa simbi isina simbi yakarongerwa kuti irambe ichishandiswa pa200°C. Bhodhi-kune-socket kurongeka kunoda iko kurongeka kudzivirira kukuvadzwa kwekubatana panguva yekuwedzera kwemafuta, kazhinji kushandisa inoyangarara yekubatanidza madhizaini anoenderana nekufamba kwakasiyana.

Dhizaini yeKuvimbika kweThermal muBurn-in Board PCBs

Thermal Simulation uye Analysis

Kutevedzera kupisa panguva yekugadzira kunoratidza nzvimbo dzinogona kukonzera kupisa uye kunosimbisa nzira dzekutarisira kupisa usati wagadzira prototype. Mamodheru ekuongorora zvinhu zvakaganhurirwa anofanotaura kugoverwa kwekupisa muBurn-in Board PCB pasi pesimba rakazara, zvichibvumira vagadziri kugadzirisa kugoverwa kwemhangura uye nzvimbo pakati pezvikamu.

Kugadzirisa CTE Mismatch

Coefficient yemafuta ekuwedzera kusawirirana pakati pePCB zvishandiso uye mapakeji emudziyo anogadzira shear kusagadzikana mumajoini ekutengesa panguva yekutenderera bhasikoro. Symmetrical stack-up zvivakwa zvinoderedza bhodhi warpage nekuenzanisa kugoverwa kwemhangura mukati medhizaini, neyakajairwa copper balance inochengetwa mukati me10% pakati pezvikamu.

Mitemo yekugadzira inofanirwa kudzikamisa mhangura yekumisikidza misiyano yekudzivirira mutsauko wekuwedzera iyo induces board twist. Shandisa symmetrical stack-up kuti uderedze bhodhi warpage panguva yenguva yakareba yekupisa kupisa, kuisa simba uye ndege dzepasi zvakaenzana nezvebhodhi centreline.

Kugadzira uye Kudzora Kwemhando yeBurn-in Board PCBs

Specialized Process Controls

Burn-in Board PCB kugadzira kunoda maitiro ekudzora anodarika zvakajairwa kugadzirwa zvinodiwa:

• Yakawedzerwa lamination cycles -Thermal exposure profiles inovimbisa kupora resin kupora uye kuderedza kusara kunetseka mubhodhi rakapera.
• Kubvisa unyoro – Post-assembly kubika pa120°C kwemaawa 4-8 kunoderedza hunyoro huri pasi pe0.2% kudzivirira delamination.
• Kudzorwa impedance verification -Kuyedza kunosimbisa kuti zvakatemwa zvinosangana mukati mese tembiricha yekushanda.
• Kuongororwa kwepamusoro-soro -Kusimbiswa kwekudzivirira kwekudzivirira pane tembiricha yakakwira inovimbisa kutendeseka kwedielectric.

Post-Manufacturing Inspection

Kuyedzwa kwemagetsi kunosimbisa inodzorwa impedance traces uye kuonana kuramba kuyerwa kunosimbisa kubatana kwakavimbika mabhodhi asati apinda basa. Kuongorora kwepashure-kupisa kunoongorora mabhodhi ekuchinja kwemavara, delamination, kana dimensional shanduko inoratidza kuparara kwezvinhu zvinoda kutsiviwa bhodhi.

Zvikumbiro zveBurn-in Board PCBs

Memory uye Logic Devices

Memory akasanganiswa maseketi anosanganisira DRAM neFlash zvishandiso zvinopinda mukutsva-mukuyedza kuti ive nechokwadi chekuchengeta data. Burn-in Board PCBs dzekuyedza ndangariro dzinowanzogara 64 kusvika 256 zvishandiso panguva imwe chete, zvinoda akaomesesa magetsi ekugovera network kuchengetedza tembiricha yakafanana pamabhodhi ane vanhu vakawanda.

Simba Semiconductors

Simba semiconductor midziyo yakadai seMOSFETs uye IGBTs inoda kupisa-mukuedzwa patembiricha yakakwira yekusangana uku uchiitisa maratidziro akayerwa. Aya maapplication anoda Burn-in Mabhodhi ane huremu hwakakura hwemhangura inobata simba rekubvisa kubva pa5W kusvika 50W pachinzvimbo chemudziyo.

Zvemotokari uye Aerospace Electronics

Mota uye aerospace zvemagetsi zvinorayira kuwedzera kupisa-mukuedza kusangana neAEC-Q100 uye MIL-STD-883 kuvimbika zvinodiwa zvekuchengetedza-akakosha maapplication. Aya maindasitiri anoshandisa Burn-in Board PCBs akagadzirirwa zviuru zvezviyero zvinopisa, zvichitsigira kuongororwa kwehunyanzvi mukati mehupenyu hwakawedzerwa hwekushanda.

Yakakwirira-Kuvimbika Industrial ICs

Yakakwirira-yakavimbika maindasitiri kudzora akabatanidzwa maseketi anopinzwa-mukuvheneka kuti awane kukundikana mitengo pazasi gumi FIT (kutadza munguva pabhirioni mudziyo-maawa). Iwo Burn-in Board PCBs anoshandiswa mune izvi maapplication anofanirwa kupa kugadzikana kwenguva refu kugadzikana mukati mekugadzira mijenya kunotora mwedzi kana makore.

mhedziso

Kubudirira Kupisa-muBhodhi PCB dhizaini inobatanidza kutungamira kwekupisa, kusarudzwa kwezvinhu, uye magetsi ekugadzira masisitimu akagadziridzwa kuti awedzere-tembiricha kushanda. Kusarudza akakodzera laminate zvinhu zvine humbowo hwekuchembera hunosimbisa hwaro hwekuita kwakavimbika, nepo simba rakasimba rekugovera magetsi uye masisitimu ekubatanidza anovimbisa kugadzikana kwemagetsi mukati mese kuenderera mberi kwekushanda.

Highleap Electronics Burn-in Board PCB Kugona

KuHighleap Electronics, tinopa akasarudzika ekugadzira mhinduro dzekuda kupisa-mukuyedza maapplication:

• High-tembiricha zvinhu unyanzvi -Polyimide uye yakakwira-Tg FR-408HR laminate process ine yakasimbiswa yekuchembera kwemafuta.
• Kuvaka mhangura inorema - 2-ounce kusvika 6-ounce huremu hwemhangura nehuremu hwekutsvaga hupamhi hwekugovera simba.
• Advanced surface finishes - ENIG uye yakaoma goridhe plating maitiro akagadziridzwa kuvimbika kwepamusoro-tembiricha.
• Thermal simulation rutsigiro - Pre-kugadzira dhizaini yekusimbisa kukwidziridza mashandiro ekupisa uye kuona zvinogona kuitika.
• Quality zvinyorwa -Yakazara zvinhu zvekuteedzera uye yekudziya yekuchembera bvunzo mishumo yeakakosha maapplication.

Bata timu yedu yeinjiniya kuti mukurukure zvinodiwa nemi pakuedza zvakanyanya uye kuti mudzidze kuti maitiro edu ekugadzira anogona sei kutsigira zvirongwa zvenyu zvekuvimbika kwesemiconductor.