..1: Dhirowa dhiyabhorosi.
..2: Gadzira chikamu raibhurari.
..3: Gadzira hukama hwekubatanidza network pakati peiyo schematic diagram uye zvikamu pabhodhi rakadhindwa.
..4: Nzira uye kuiswa.
..5: Gadzira yakadhindwa bhodhi dhizaini yekushandisa data uye kuisa dhizaini yekushandisa data.
.. Mushure mekuona nzvimbo uye chimiro chezvikamu paPCB, funga marongerwo ePCB.
1. Nechinzvimbo chechikamu, wiring inoitwa maererano nechinzvimbo chechikamu.Icho chirevo chekuti wiring pabhodhi rakadhindwa ipfupi sezvinobvira.Iwo maronda mapfupi, uye chiteshi nenzvimbo inogarwa idiki, saka chiyero chekupfuura chichave chakakwira.Waya dzeiyo terminal yekupinza uye inobuda terminal paPCB board inofanirwa kuyedza kudzivirira kuti isave padhuze kune imwe neimwe yakafanana, uye zviri nani kuisa waya yepasi pakati petambo mbiri.Kuti udzivise kubatanidza mhinduro dzedunhu.Kana bhodhi rakadhindwa riri bhodhi re-multi-layer board, nzira yekufambisa yemutsara wechiratidzo chega yega yega yakasiyana neyoyo yebhodhi iri pedyo.Kune mamwe mitsara yakakosha yechiratidzo, iwe unofanirwa kusvika pachibvumirano nemugadziri wemutsara, kunyanya mitsara yekusiyanisa mitsetse, inofanirwa kufambiswa mumaviri maviri, edza kuita kuti ifanane uye ivhare, uye kureba hakuna kunyanya kusiyana.Zvese zvinoriumba paPCB zvinofanirwa kudzikisa nekupfupisa zvinotungamira uye zvinongedzo pakati pezvikamu.Hupamhi hudiki hwewaya muPCB inonyanya kutsanangurwa nesimba rekunamatira pakati pewaya uye insulating layer substrate uye kukosha kwazvino kuyerera kuburikidza navo.Kana kukora kwefoiri yemhangura kuri 0.05mm uye hupamhi huri 1-1.5mm, tembiricha haizove yakakwirira kudarika madhigirii matatu kana ikozvino ye2A yapfuura.Kana waya yakafara 1.5mm, inogona kusangana nezvinodiwa.Kwemaseketi akabatanidzwa, kunyanya maseketi edhijitari, 0.02-0.03mm inowanzosarudzwa.Zvechokwadi, chero bedzi ichibvumirwa, tinoshandisa waya dzakafara zvakanyanya sezvinobvira, kunyanya magetsi emagetsi uye waya pasi paPCB.Iyo yakaderera kureba pakati pewaya inonyanya kutsanangurwa nekushongedzwa kwekudzivirira uye kuputsa voltage pakati pewaya mune yakaipisisa kesi.
Kune mamwe maseketi akabatanidzwa (IC), gomba rinogona kuitwa diki pane 5-8mm kubva pakuona kwehunyanzvi.Iko kubhenda kwewaya yakadhindwa kazhinji idiki arc, uye kushandiswa kweasingasviki 90-degree mabhendi kunofanirwa kudzivirirwa.Iko kona yakarurama uye kona yakabatanidzwa ichakanganisa kushanda kwemagetsi mu-high-frequency circuit.Muchidimbu, wiring yebhodhi yakadhindwa inofanira kuva yakafanana, yakaoma uye inopindirana.Edza kudzivisa kushandiswa kwemavara makuru emhangura yemhangura munharaunda, kana zvisina kudaro, kana kupisa kunogadzirwa kwenguva yakareba panguva yekushandiswa, foil yemhangura ichawedzera uye inodonha nyore nyore.Kana chifukidzo chemhangura chakakura chichifanira kushandiswa, waya dzakaita segridi dzinogona kushandiswa.Iyo terminal yewaya ndiyo padhi.Gomba repakati pepedhi rakakura kudarika dhayamita yedhayamita inotungamira.Kana iyo padhi yakakura kwazvo, zviri nyore kuumba virtual weld panguva yekuputika.Iyo yekunze dhayamita D yepedhi kazhinji haisi pasi pe (d+1.2) mm, uko d ndiko kuvhura.Kune zvimwe zvikamu zvine density yakakwira, iyo shoma dhayamita yepedhi inodiwa (d+1.0) mm, mushure mekugadzirwa kwepadhi kwapera, chimiro chechidimbu chechishandiso chinofanira kudhonzwa chakatenderedza padhi rebhodhi rakadhindwa, uye zvinyorwa nemabhii zvinofanira kumakwa panguva imwe chete.Kazhinji, kureba kwechinyorwa kana furemu kunofanirwa kunge kuri kutenderedza 0.9mm, uye upamhi hwemutsara hunofanira kunge hwakatenderedza 0.2mm.Uye mitsetse yakaita semavara akamakwa uye mavara haafanire kudzvanywa padhi.Kana iri kaviri-layer board, iyo yepasi hunhu inofanirwa kuratidza iyo label.
Chechipiri, kuitira kuti chigadzirwa chakagadzirwa chishande zviri nani uye zvinobudirira, PCB inofanira kufunga nezvekugona kwayo kupesana-kupindira mukugadzira, uye ine hukama hwepedyo nedunhu rakananga.
Kugadzirwa kwetambo yemagetsi uye mutsara wepasi mubhodhi redunhu inonyanya kukosha.Maererano nehukuru hwemazuva ano hunoyerera kuburikidza nemapuranga ematunhu akasiyana, hupamhi hwetambo yemagetsi inofanira kuwedzerwa zvakanyanya sezvinobvira kuderedza kupikisa kwechiuno.Panguva imwecheteyo, kutungamirirwa kwemutsara wemagetsi uye mutsara wepasi uye data Nzira yekufambisa inoramba yakafanana.Batsira mukusimudzirwa kweiyo anti-ruzha kugona kwedunhu.Kune ese ari maviri logic maseketi uye mutsara maseketi paPCB, kuitira kuti apatsanurwe zvakanyanya sezvinobvira.Iyo yakaderera-frequency yedunhu inogona kubatanidzwa mukufanana neinoti imwe chete.Iyo chaiyo wiring inogona kubatanidzwa munhevedzano uye yobva yabatanidzwa mukufanana.Iyo pasi waya inofanira kuva pfupi uye yakakora.Yakakura-nzvimbo yepasi foil inogona kushandiswa kumativi epamusoro-frequency components.Iyo yepasi waya inofanira kunge yakakura sezvinobvira.Kana tambo yepasi yakanyanya kutetepa, simba revhu richachinja neazvino, izvo zvinoderedza kurwisa-ruzha kuita.Nokudaro, tambo yepasi inofanira kusimbiswa kuitira kuti isvike ikozvino inobvumirwa pane bhodhi redunhu.Kana iyo yakagadzirwa inobvumira dhayamita yetambo yepasi kuti iwedzere kupfuura 2-3mm, mumagetsi edhijitari, tambo yepasi inogona kurongwa mukati. loop yekuvandudza anti-ruzha kugona.MuPCB dhizaini, yakakodzera decoupling capacitors inowanzo gadziridzwa muzvikamu zvakakosha zvebhodhi rakadhindwa.Iyo 10-100uF electrolytic capacitor yakabatanidzwa pamutsara pamagumo ekuisa simba.Kazhinji, 0.01PF magineti chip capacitor inofanirwa kurongeka padyo nepini yemagetsi yeiyo yakabatanidzwa yedunhu chip ine 20-30 pini.Kune machipisi akakura, kutungamira kwesimba Pachave nemapini akati wandei, uye zviri nani kuwedzera decoupling capacitor pedyo navo.Kune chip ine mapini anopfuura mazana maviri, wedzera anokwana maviri decoupling capacitor pamativi ayo mana.Kana gaka racho risina kukwana, 1-10PF tantalum capacitor inogonawo kurongwa pa 4-8 chips.Kune zvikamu zvine simba risina simba rinopesana nekupindira uye kuchinja kukuru kwemasimba, decoupling capacitor inofanira kubatanidzwa zvakananga pakati petambo yemagetsi uye mutsara wepasi wechikamu., Hazvina mhosva kuti ndeupi rudzi rwemutungamiri wakabatanidzwa kune capacitor kumusoro, hazvisi nyore kuva yakareba.
3. Mushure mekunge chikamu uye dhizaini yedhizaini yapedzwa, dhizaini yaro inofanirwa kutariswa inotevera, kuitira kubvisa marudzi ese ezvakaipa zvinhu zvisati zvatanga kugadzirwa, uye panguva imwechete, funga nezve manufacturability. bhodhi redunhu kuitira kugadzira zvigadzirwa zvemhando yepamusoro.uye kugadzirwa kwakawanda.
.. Paunenge uchitaura pamusoro pekugadzika uye wiring yezvikamu, zvimwe zvikamu zvemaitiro ebhodhi redunhu zvakabatanidzwa.Iyo dhizaini yedhizaini dhizaini inonyanya kuunganidza bhodhi redunhu uye zvikamu zvatakagadzira kuburikidza neSMT yekugadzira mutsara, kuitira kuti tiwane yakanaka yekubatanidza magetsi uye kuzadzisa chinzvimbo chezvigadzirwa zvedu zvakagadzirirwa.Pad dhizaini, wiring uye anti-kupindira, nezvimwe zvinodawo kufunga kuti bhodhi ratakagadzira iri nyore kugadzira, ringave rinogona kuunganidzwa neazvino gungano tekinoroji-SMT tekinoroji, uye panguva imwe chete, zvakakosha kusangana ne mamiriro ekusabvumira zvigadzirwa zvakakanganisika kugadzirwa panguva yekugadzirwa.high.Kunyanya, pane zvinotevera zvikamu:
1: Mitsetse yekugadzira yakasiyana yeSMT ine mamiriro ekugadzira akasiyana, asi maererano nehukuru hwePCB, saizi imwe yebhodhi yePCB haisi pasi pe200 * 150mm.Kana rutivi rwakareba rwakanyanya kudiki, kuiswa kunogona kushandiswa, uye reshiyo yehurefu kusvika pahupamhi i3:2 kana 4:3.Kana saizi yebhodhi redunhu yakakura kupfuura 200 × 150mm, iyo mechanical simba redunhu bhodhi inofanira kutariswa.
2: Kana saizi yebhodhi redunhu iri diki zvakanyanya, zvakaoma kune yese SMT mutsara wekugadzira nzira, uye hazvisi nyore kugadzira mumabheti.Nzira yakanakisisa ndeyokushandisa fomu yebhodhi, iyo yekubatanidza 2, 4, 6 uye mamwe mapuranga ega ega maererano nehukuru hwebhodhi.Yakasanganiswa pamwe chete kuti iumbe bhodhi rose rakakodzera kugadzirwa kwakawanda, saizi yebhodhi rose inofanirwa kuenderana nehukuru hweiyo inonamira renji.
3: Kuti uenderane nekuiswa kwemutsara wekugadzira, vheji inofanira kusiya huwandu hwe3-5mm pasina chero zvikamu, uye pani inofanira kusiya 3-8mm process edge.Kune mhando nhatu dzekubatanidza pakati peiyo process edge nePCB: A isina kupindirana, Pane tangi yekuparadzanisa, B ine divi uye tangi yekuparadzanisa, uye C ine divi uye haina tangi yekuparadzanisa.Yakashongedzerwa ne punching process equipment.Zvinoenderana nechimiro chePCB board, kune akasiyana mafomu ejigsaw board, akadai saYoutu.Iyo nzira yePCB ine nzira dzakasiyana dzekumisa zvinoenderana nemhando dzakasiyana, uye mamwe ane maburi ekumisikidza padivi rekuita.Iyo dhayamita yegomba ndeye 4-5 cm.Zvichireva kutaura, iyo yekumisikidza kurongeka kwakakwira kupfuura iyo yedivi, saka kune Iyo modhi ine gomba yekumisikidza inofanirwa kupihwa maburi ekumisikidza panguva yePCB kugadzirisa, uye dhizaini yegomba inofanirwa kuve yakajairwa kudzivirira kusagadzikana kwekugadzira.
4: Kuti uve nenzvimbo iri nani uye uwane kukwira kwepamusoro kurongeka, zvinodikanwa kuseta chinongedzo chePCB.Kunyangwe paine chinongedzo chekutarisa uye kuti iyo yekumisikidza yakanaka here kana kwete ichakanganisa zvakananga kugadzirwa kwakawanda kweiyo SMT yekugadzira mutsara.Chimiro chechiratidzo chetauro chinogona kuva mativi mana, denderedzwa, katatu, etc. Uye dhayamita inofanira kunge iri mukati mehupamhi hwe 1-2mm, uye yakapoteredza nzvimbo yekutarisa inofanira kunge iri mukati mehupamhi hwe 3-5mm, pasina chero zvikamu uye inotungamira.Panguva imwecheteyo, nzvimbo yekutarisa inofanira kunge yakatsetseka uye yakatsetseka pasina kusvibiswa.Iyo dhizaini yereferensi point haifanirwe kunge iri pedyo zvakanyanya kumucheto kwebhodhi, panofanira kunge paine chinhambwe che3-5mm.
5: Kubva pamaonero ehurongwa hwese hwekugadzira, chimiro chebhodhi chiri nani chakaita sepitch-shaped, kunyanya kune wave soldering.Rectangular kuitira nyore kutumira.Kana paine groove isipo paPCB board, iyo groove isipo inofanira kuzadzwa muchimiro chemupendero wegadziriro, uye imwe SMT board inotenderwa kuve nekushaikwa groove.Asi iyo groove yakashaikwa haisi nyore kuve yakakura uye inofanirwa kuve isingasviki 1/3 yehurefu hwedivi.
Nguva yekutumira: Chivabvu-06-2023