Kuedzwa kweMagetsi PCB Flying Probe vs ICT vs FCT

Mainjiniya ari kutsvaga mhinduro dzePCB dzekuyedza magetsi haawanzoda chinhu chimwe chete. Vamwe vari kusarudza pakati peflying probe neICT fixture. Vamwe vari kutsvaga mashoti mapfupi, ma opens, kana kuti impedance faults. Vamwe vanoda mugadziri wezvinhu anozvipira kuyedza magetsi zvizere nemagwaro ega ega. Vamwe vari kunyora specification yekuyedza uye vanoda kuziva chaizvo kuti ndeapi matanho uye nzira dzekutsanangura. Uye vamwe vanofanirwa kunzwisisa basa remainjiniya weCAM - nekuti sarudzo dzakaitwa bhodhi risati ratanga kushanda dzinoona kana chirongwa chekuyedza chichibata zvikanganiso chaizvo kana kuti chichiburitsa mishumo inopfuura isina zvikanganiso zvakakosha.

Tora PCB ne100% Magetsi Bvunzo

Kuedzwa kweMagetsi ePCB Asina Mhuno kana Kuedzwa kwePCB Yakaungana

Kuongororwa kwemagetsi kwePCB kunoitika pamatanho maviri akasiyana, uye kunobata mapoka akasiyana ezvikanganiso - hapana chimwe chinotsiva chimwe.

Kuedzwa kwemagetsi kwebhodhi risina chinhu kunoitwa zvinhu zvisati zvaiswa. Mambure ese anoedzwa kuti aone kana ari kuramba aripo (≤10Ω) uye kuti haasisina chinhu (≥10MΩ pa250VDC). Anobata zvikanganiso zvekugadzira: kuvhura maburi nemabhurugwa mapfupi, kunyoresa zvisizvo kwedhiri, kuburikidza nekuvhura maburi, uye mabhurugwa mapfupi ekubvisa maburi. Nzvimbo yebhodhi inosvikika zvizere, saka kufukidza maburi kunosvika 95–99%.

Kuyedzwa kwemagetsi mushure mekusangana kunoitwa mushure mekunamirwa. Kufukidza kunodonha nekuti zvikamu zvechinhu zvinovhara mukana wekupinda mumapedhi ari pasi. Pamabhodhi ane BGA anorema, kufukidza kunowanikwa kunowanzo derera kusvika 60–80%.

Chii Chinovimbiswa Ne "100% Kuedzwa Kwemagetsi"

Kana mugadziri wezvinhu akazvipira kuyedza magetsi zvizere, zvinoreva kuti bhodhi rega rega risina chinhu rinoedzwa risati ratumirwa — hapana sampuli. Rinovhara kuenderera mberi uye kupatsanurwa kwemambure ese. Hazvivimbise otomatiki kusimbiswa kweimpedance kana kuongororwa kwezvikamu zvakasiyana — izvo zvinoda kutsanangurwa kwakajeka.

KuHighleap, kuyedzwa kwemagetsi kwe100% pasina bhodhi paIPC-9252 ndiko kwakajairika paodha yega yega. Mishumo yekuyedzwa kwepa-lot inotumirwa nemabhodhi. Kumbira fomu remushumo usati waisa odha kana zvinodiwa pakutenga kwako zvichida humbowo hwakanyorwa hwebvunzo.

Flying Probe vs. ICT Fixture: Mutengo, Kufukidzwa, uye Nguva yekushandisa Imwe Neimwe

Nguva Yokushandisa Imwe neimwe

• Mabhodhi / mienzaniso yemuenzaniso pasi pe100: Kuongorora kwemhepo nguva dzose. Mari inoshandiswa mukugadzira zvinhu haina kururama; kugadziriswa kunotarisirwa.
• Mabhodhi zana kusvika mazana mashanu: Chinoongorora bhodhi risina chinhu. ICT chete kana marongerwo acho achitsigira uye dhizaini yacho yakagadzikana.
• Mabhodhi 500–5,000 pagore: Ongorora zvichienderana nezvinodiwa pakuburitsa zvinhu. Mari ye $1,000 pa500 units = $2 pabhodhi — inowanzokosha kana nguva yekutenderera ichikosha.
• >5,000 mabhodhi pagore: chigadzirwa cheICT chekushandisa throughput; flying probe yemambure asingasvikwe chete.
• HDI ine microvias: Chinobhururuka chinobata ma microvia pads zviri nani. Hybrid inoshanda: ICT yemambure makuru, chinobhururuka chinobhururuka mambure e microvia chete.
• Kugadziriswa kwakawanda / kwakajairika: Chinobhururuka chinoongorora zvinhu chinoita kuti zvisashande — hapana chikonzero chekugadzira patsva kana bhodhi rachigadzirisa.

Nei Kufukidzwa kweBGA Kuchidzika Pasi pe70%

Mapakeji eBGA, QFN, uye LGA ari pamusoro pemajoini avo ekutengesa — maprobe haakwanise kusvika kwavari kubva kunze. Pabhodhi rine maBGA matatu makuru, 30–40% yemambure anogona kunge asina nzvimbo inosvikika yeprobe kumativi ese ebhodhi. Mhinduro: wedzera ma test vias emambure akakosha eBGA panguva yekurongeka; shandisa boundary scan (JTAG) pamaIC anoenderana nemutemo; kana kufukidza subsystems dzisingasvikike ne functional test.

Mitemo yePCB Test Point Design yeKufukidza Kwakazara

Kufukidzwa kwebvunzo kunoonekwa panguva yekurongwa kwePCB — kwete neinjiniya webvunzo mushure mekunge mabhodhi agadzirwa. Mitemo iyi inofanira kushandiswa usati wapedza kuronga.

Zvinodiwa paKugadzirisa ICT

• Dhayamita yepad yekuyedza: 1.0mm inosarudzwa, 0.80mm zvachose yakaderera
• Kubviswa kwechinhu mumuviri: 2.5mm zvishoma
• Nzvimbo yekuyera padhi: 2.54mm inosarudzwa; 1.27mm iri pasi. Pasi pe1.27mm inoda zvinhu zvakagadzirwa nemaoko pamutengo wakakwira zvikuru
• Kuiswa kwedivi rimwe chete: Inoderedza mutengo wezvishandiso ne40–60% nekubvisa ndiro yechipiri yezvishandiso
• Chinangwa chekufukidza: Nzvimbo imwe chete yekuyedza pamutengo wepasi; imwe chete pamutengo wepasi kuti ikwanise kupatsanura zvikanganiso

Zvinodiwa paFlying Probe

• Pedhi diki: 0.30mm — hapana grid inodziviswa, mativi ese ari maviri anowanikwa, ma microvia land pads anowanikwa
• Hapana mhando yeprobe inogona kusvika kumambure isina pad inosvikika pamusoro. Mambure ari pasi peBGA anotoda nzira dzekuwedzera pasinei nesarudzo yeprobe.

Kusiya nzvimbo dzekuyedza kuti uchengetedze nzvimbo yebhodhi kunogara kuchiguma nemigumisiro yakafanana: probe inobhururuka zvishoma nezvishoma isina kuvharwa zvakakwana, chigadzirwa cheICT chine 50–60% chekuvharwa chinopa chivimbo chenhema, kana kusaedza otomatiki PCB electrical testing zvachose. Mhangura yekuyedza haina mari pakugadzira.

Kufukidzwa kwebvunzo dzePCB: Maitiro Ekuverenga Kurongwa Kusati Kwapera

Kufukidza Kwese vs. Kufukidza KweNode

"100% electric test" zvinoreva kuti 100% yemambure ane kanenge imwe nzvimbo yekuyedza inowanikwa - kwete kuti node yega yega inoongororwa yega. Net ine mafundo mashanu inoongororwa kubva pamagumo ayo inosiya mafundo matatu epakati akasimbiswa nekufungidzira. Joint inotonhora iri panode yepakati ine resistance ye7Ω pa threshold ye10Ω inopfuura isina kuonekwa.

Zviyero zvitatu zvinokosha:

• Kufukidzwa kweInternet: % yemambure ese ane kanenge nzvimbo imwe chete inowanikwa. Tarisa 100% pabhodhi risina chinhu.
• Kufukidzwa kwenzvimbo: % yenzvimbo dzese dzema net nodes (ma pads, junctions, vias) dzakaongororwa zvakananga. >80% yakasimba; <60% inoda magwaro uye kuderedzwa.
• Kufukidzwa kwezvikanganiso: % yemhando dzese dzezvikanganiso dzinogona kuonekwa nechirongwa chekuyedza — nhamba ine zvazvinoreva zvakanyanya uye yakanyanya kuoma kuyera pasina maturusi ekuyedza.

Kuverenga Kufukidza Usati Wapedzisa Kuronga

1. Tumira runyorwa rwakazara rwemawebhusaiti nenhamba yemanode kubva kuPCB CAD tool yako
2. Isa chiratidzo panet yega yega: ine pad imwe chete inowanikwa nyore here (≥1.0mm yechinhu chinobatidza, ≥0.30mm yekuongorora mafambiro emhepo)?
3. Mambure akafukidzwa ÷ mambure ese × 100 = kuvharwa kwakafungidzirwa
4. Kana iri pasi pe85%: wedzera ma test vias kana ma pads izvozvi, usati wapedzisa kuronga.

Mwero Wekutiza Zvikanganiso Nemaitiro Ekuyedza

Kuedza kweImpedance, Hipot, uye RF Bvunzo dzeHigh-Speed ​​PCBs

Kusimbiswa kweTDR Impedance

Kuyedzwa kwekuenderera mberi kwakajairwa kunosimbisa kuti pane chisaririra chiripo — haitsigire kupindira kwacho. Chisaririra chakatetepa ne3µm kupfuura chakagadzirwa chinoyera kuramba kwakakodzera paDC asi chingave 53Ω pachinzvimbo che50Ω — dambudziko rekuvimbika kwechiratidzo risingaonekwe nekuyedzwa kwemagetsi kwePCB kwakajairwa.

TDR (time-domain reflectometry) inopinza mupendero wemagetsi unokurumidza uye inoyera waveform inoratidzwa. Kugamuchirwa kwakajairika: ±10% yezita; magadzirirwo akasimba anoratidza ±5%. Kuti izvi zvigoneke kugadzirwa, taura kuponi yeTDR mupaneri: trace ine geometry yakafanana inomhanya pamupendero wepaneri, ine layer, reference planes, trace width, target impedance, uye tolerance zvakanyorwa muzvinyorwa zvekugadzira. Kuponi imwe chete papaneri pa impedance specification. Pasina izvi, hauna humbowo hwe impedance chaiyo.

Kune maPCB ane impedance inodzorwa — DDR5, PCIe, USB 3.x, RF — TDR haisi sarudzo.

Kuedzwa kweHipot

Hipot inoshandisa voltage yakakwira pakati pemambure akaparadzana kuti ione kuti hapana nzira yekupwanyika iripo pavoltage yekushanda. Peya inoratidza 10MΩ pa250VDC inogona kuramba ichipwanyika pa500V kana paine gomba remask kana nzira yekusvibiswa. Zvinodiwa pamidziyo yekurapa (IEC 60601: 1,500–4,000V), magetsi emagetsi emotokari anopfuura 48V (500–1,000V), kupatsanurwa kwemaini emuindasitiri (IEC 61010: 1,000–1,500V), uye kutevedzera mitemo yemagetsi (IEC 62368: 1,500–3,000V). Mutengo: $0.20–$0.80/bhodhi. Inoshandiswa 100% muClass 3 uye mapurogiramu ekurapa.

Kuongorora RF Network Pamusoro pe1 GHz

Pakuyedzwa kweRF PCB pamusoro pe1 GHz, kuongorora kwevector network (VNA) kunoyera maS-parameter — kurasikirwa kwekuisa, kurasikirwa kwekudzoka, uye kupatsanurwa kweport — kuburikidza nefrequency. Inoshandiswa pakuongorora nyaya yekutanga uye kuyera nhamba. Inodiwa kumaRF modules, antenna circuits, uye filter networks pamusoro pe1 GHz.

AOI, X-Ray, uye Kuongororwa Kwebasa Mushure meKuungana

AOIs

Kuongorora kwe otomatiki kwe optical kunoitika mushure meSMT reflow yega yega pamasekonzi 30-120 pabhodhi rega rega, 100% yemapaneru. Inobata zvinhu zvisipo, reversed polarity, tombstoned passives, visible solder bridges, uye BGA placement misalignment. Haikwanise kuona pasi pema package bodies, cold joints dzinoita sedzakarurama, dzisiri dzevalue, kana solder voids mukati mema joints.

X-Ray

Mifananidzo yeX-ray inosanganisa majoini ekutengesa pasi peBGA, QFN, uye LGA package — ichiona mabhiriji ari mukati mebhora, inovhurika, uye inobuda isina chinhu pamusoro pe25% yenzvimbo yebhora. Shandisa 100% pazvigadzirwa zvinovimbika zvakanyanya uye kugadzirisa kwese kweBGA; chinyorwa chekutanga pamwe nesampuru yehuwandu hwezvigadzirwa.

Functional Circuit Test

Kuedza kwesekitori inoshanda kunoita kuti bhodhi rishande uye rinoita basa raro chairo. Kunobata zvinhu zvisingakwanise kuitwa nekuyedza kwemagetsi: mabhodhi ane zvikamu zvakanaka uye kubatanidzwa kwakachena asi zvichiri kukanganisa zvinodiwa — firmware isiriyo, marginal timing, marginal-related escapes. Mutengo wekugadzirisa zvinhu wakasiyana: $5,000–$50,000+. Zvakarurama pamusoro peizvi zvingangoita mayuniti chiuru pagore kana mari yekudzoka kwemumunda ichidarika kugadzirwa kwekugadzirisa zvinhu.

Maitiro anoita Injiniya weCAM pakugadzira Chirongwa cheKuedza Magetsi

Mainjiniya mazhinji anoona bvunzo dzemagetsi dzePCB sechinhu chinoitika kubhodhi rakapedzwa. Muchokwadi, sarudzo dzinoona mhando yebvunzo dzinoitwa kare - neinjiniya weCAM, kugadzirwa kusati kwatanga.

Zvinhu Zvina Zvinoitwa Neinjiniya weCAM Bhodhi Rekutanga Risati Ratanga

Kubviswa kweNetlist uye kusimbiswa kwayo. Mainjiniya weCAM anobvisa copper netlist kubva mumafaira ako eGerber kana ODB++ uye anoienzanisa neIPC-356 design netlist yako. Kusiyana - mapedhi ari padanho risiri iro, connections dzisipo, connections dzekuwedzera - zvinobatwa bhodhi risati ragadzirwa. Pasina faira reIPC-356, chirongwa chekuyedza chinovakwa kubva kuGerber geometry chete, zvichireva kuti chero musiyano weGerber-to-design hauonekwe kusvika bhodhi rakundikana.

Mepu yekusvika panzvimbo yekuyedza. Mambure ese anotaridzwa zvichienderana nenzvimbo dzekusvika dzekuongorora dziripo. Mambure asina nzvimbo yekusvikira anotaridzwa zviri pamutemo seasingaedzwe. Mainjiniya weCAM anosvetuka chinyararire mambure asingasvikike anogadzira mushumo unoratidza 100% yemambure akaedzwa achipfuura - nepo chikamu chakakosha chisina kumboedzwa. Musiyano uyu ndiwo musiyano uripo pakati pemushumo wekufukidza nechikumbiro chekufukidza.

Kugoverwa kweThreshold ne kirasi yenet. Magetsi emagetsi, ma signal nets, ma high-voltage isolation nets, uye ma RF nets ese ane zvinodiwa zvakasiyana zvekuenderera mberi uye isolation. Mainjiniya weCAM anopa thresholds net-by-net zvichienderana nezvaunoda. Kana ukangotsanangura "IPC-9252" chete, anoshandisa standard defaults, izvo zvingasaenderana nezvinodiwa chaizvo zvedhizaini yako.

Kugadzirisa nzira yekuongorora inobhururuka. Mainjiniya weCAM anoronga kutevedzana kwekuongorora - achibatanidza nzvimbo dzekuyedza dziri pedyo kuti aderedze kufamba kwemaoko. Kugadzirisa nzira zvisina kunaka kunowedzera 20-40% yenguva yekuyedza pabhodhi rega rega pamagadzirirwo akaomarara.

Maitiro Ekugadzira Unyanzvi Hwekuedza CAM Husina Simba

• Mishumo yebvunzo inoratidza kuti vakapasa 100% pasina huwandu hweongororo husingaedzwe hwakaburitswa pachena
• Mapurogiramu ekuyedza akavakwa kubva kuGerber chete, pasina kuenzanisa dhizaini netlist
• Muganho mumwe chete we10Ω wekuenderera mberi unoshandiswa kune mambure ese zvisinei nebasa
• Hapana vimbiso ye impedance yakabatidzwa high-speed PCB magadzirirwo nekuti hapana akabvunza

Paunenge uchiongorora mutengesi wePCB wemagetsi anoedza, bvunza kuti: "Munobata sei mambure pasina nzvimbo yekuyedza inowanikwa, uye izvozvo zvinoratidzwa sei mumushumo wekuyedza?" Mhinduro yacho inoratidza kana maitiro avo eCAM achiburitsa data rechokwadi rekufukidza kana kufukidza kunotaridzika kunge kwakakwana chete.

Gara Uchisanganisira Faira reIPC-356 Netlist

IPC-356 ifomati yakajairika yenetlist inotumirwa kunze kwenyika kubva kumidziyo yakawanda yePCB EDA. Inonyora mambure ese nezita nepad yega yega uye kuburikidza nenyika yayo. Kunyangwe ichigonesa mainjiniya weCAM kuti asimbise Gerber netlist zvichienderana nechinangwa chekugadzira, kupa net-specific thresholds nezita kwete negeometry inference, uye kugadzira named-net coverage report iyo vagadziri vanogona kuverenga. Pasina iyo, mambure ese haana zita uye chirongwa chekuyedza chakavakwa kubva pageometry chete. Zvinotora masekondi makumi matatu kutumira kunze kwenyika uye zvinodzivirira kusanzwisisika kunokonzera kuti bvunzo dzisabude.

Kuongororwa kweMagetsi ePCB: Zvaunofanira Kuda Kubva Kumugadziri Wako

"100% bvunzo yemagetsi kuIPC-9252" inyaya yekutarisa nzira - kwete zvirevo. Mutemo uyu unopa hurongwa; unofanira kutsanangura kukosha kwekugamuchirwa. Tsanangudzo yakazara inosanganisira:

• Muganho wekuenderera mberi: ≤10Ω default. Simba kana mambure ane simba rakawanda: ≤5Ω kana kuti akamanikana. Taura nekirasi yenet, kwete kukosha kumwe chete kwebhodhi rese.
• Muganho wekuparadzanisa: ≥10MΩ pa250VDC default. Analog yeHigh-impedance: ≥500MΩ pamhando dzakasiyana dzema net pairs.
• Test voltage: 250VDC standard. Taura 500V+ yezvinodiwa zvemagetsi ekushanda akakwira kana kuti zvinodzora kupatsanurwa kwemagetsi.
• Kusimbiswa kweImpedance: Maitiro ekukopana eTDR, chinangwa, kushivirira, uye kushuma kwepagoho rega rega. Kana zvikasashandiswa, hapana humbowo hwekuti pane kupindirana kwegoho rakasiyana.
• Nzira yekuedza uye kufukidza: Chinoongorora kana chinhu chinobhururuka; mambure asina kutorwa uye chikonzero; chikamu chidiki chekuvhara chinogamuchirika.
• Kuongorora mushure mekuungana: Chikero cheAOI (100% kana chakatorwa sampuli); Chikero cheX-ray; Kugadziridzwa kwechirongwa cheICT; kuongorora nyaya yekutanga zvinodiwa.
• Kugadzirisa kukundikana: Kubvisa, kugadzirisa patsva, kana kugamuchira zvine mirau — nezvinodiwa zvemagwaro emhedzisiro yega yega.
• Kuchengetwa kwezvinyorwa: Magadzirirwo emushumo webvunzo pachikamu chimwe nechimwe, nguva yekuchengetedza, uye nzira yekuwana ongororo yekukundikana kwemunda.

Zvikanganiso Zvitatu Zvinogadzira Njodzi Yemhando Yakavanzika

• Hapana kukosha kwekugamuchirwa: "IPC-9252" chete zvinoreva kuti mugadziri anoshandisa maitiro ake ekugadzira, ayo angasaenderana nedhizaini yako.
• Hapana TDR pamabhodhi anodzorwa-impedance: Pasina kutsanangurwa kwe coupon, hauna humbowo hwekugadzira hunoratidza kuti impedance iri mukati me spec - chete nhamba dzemaitiro emugadziri.
• Kutsvaga kufukidza kwakazara pasina kuongorora: Mipata yekuvhara BGA isingazivikanwe inoita kuti pave nenzira dzekubuda dzisina kunaka dzinoita sedzinogamuchirwa papepa uye dzinokundikana mubasa.

Kugona Kwekuongorora Magetsi eHighleap's PCB

Highleap Electronics inosanganisira kuyedzwa kwemagetsi kwe100% seyakajairika pane yega yega odha isina chinhu:

• Chinoongorora kubhururuka: Masisitimu mana, ±15µm kurongeka — 100% kufukidza kwese kwese panel, prototype kuburikidza nekugadzirwa
• Vayedzi vegridi yemagetsi ese: Kune maodha ehuwandu hwakawanda anopfuura 500 mabhodhi pabhechi rimwe nerimwe
• Kuvharirwa kweTDR: ±5% kushivirira; mushumo we waveform wakanyatsotsanangurwa unosanganisirwa nezvose PCB inodzorwa ne impedance maodha pasina muripo wekuwedzera
• Hipot: Kusvika ku3,000VDC yekushandiswa kwekurapa uye high-voltage isolation applications
• AOI mushure mekuungana: 100% mushure mega rega reflow pass
• X-ray: Kusimbiswa kwe2D ne2.5D BGA neQFN — 100% kana kuti sampuli zvichienderana nezvinodiwa
• Kushanda bvunzo: Chigadzirwa chakagadzirwa nehurongwa uye kugadzirwa kwechirongwa chine kutevedza nhamba dze serial payuniti imwe neimwe
• Magwaro ebvunzo: Mishumo yekuedza magetsi pamutengo wega wega, zvinyorwa zveTDR, mapakeji echinyorwa chekutanga — zvinounzwa zvakajairika, kwete zvekuwedzera

Tora PCB ine bvunzo yemagetsi 100% inosanganisirwa