Ma Motherboard a Zamagetsi Ogwiritsa Ntchito Amafunika Ma Pin Header Okhazikika komanso Okhala Ndi Kachulukidwe Kakakulu — Ma configurations a 2.54mm ndi 1.27mm a Nyumba Zosonkhanitsira za PCB
- Ma motherboard amakono amagetsi ogwiritsidwa ntchito nthawi zambiri amaphatikiza ma 2.54mm standard-pitch ndi 1.27mm high-density pin headers pa bolodi lomwelo kuti awonjezere malo, kudalirika kwa ma signal, komanso kupanga bwino.
- Pitch ya 2.54mm ikadali njira yogwirira ntchito kwambiri pamakampani opanga mphamvu, mapulogalamu, ndi ma debug interfaces, pomwe pitch ya 1.27mm imagwira ntchito panjira zama siginecha othamanga kwambiri komanso malo okhala ndi bolodi laling'ono.
- Zosankha za zinthu ndi ma plating — tini, golide, kapena ma plating osankhidwa — zimakhudza mwachindunji mtengo, kuthekera kosokedwa, ndi kupirira kwa nthawi yokumana.
- Nyumba zomangira nyumba zimapindula pogula makampani onse awiri ogulitsa zinthu kuchokera kwa wopanga mmodzi kuti alimbikitse kuwongolera khalidwe, kuchepetsa zovuta za unyolo wogulira, komanso kuteteza mitengo yokwera.
Chifukwa Chake Zipangizo Zamagetsi Zamakono Zimafunikira Kuchulukana kwa Ma Pin Header Awiri
Tikayang'ana momwe ma motherboard amagwirira ntchito masiku ano — kuyambira ma smart home hubs ndi ma IoT gateways mpaka ma game accessibles ndi zida zamankhwala zonyamulika — mawonekedwe omveka bwino amaonekera. Opanga mapulogalamu sakusankhanso pakati pa ma standard-density ndi high-density connectors; akugwiritsa ntchito zonse pa PCB imodzi. Njira iyi ya dual-pitch yakhala njira yokhazikika ya bolodi lililonse lomwe liyenera kulinganiza bwino ndalama ndi zinthu zomwe zimachepetsa mawonekedwe.
Mphamvu yoyendetsera izi ndi yosavuta. Pamene zinthu zikuchulukirachulukira ndipo zizindikiro za bolodi zikuchepa, malo aliwonse a PCB amakhala ndi mtengo wake. Mutu wa 2.54mm pin umagwiritsa ntchito malo okwana kanayi kuposa malo okwana 1.27mm ofanana ndi omwewo. Komabe muyezo wa 2.54mm umakhalabe chifukwa umapereka mphamvu yamakina, kusintha kosavuta pamanja, kugwiritsa ntchito zida zonse, komanso kudalirika kwa nthawi yayitali pakutumiza magetsi komanso malo owongolera liwiro lotsika.
Nthawi yomweyo, kuchuluka kwa ma serial interfaces othamanga kwambiri monga MIPI, LVDS, ndi USB 3.x pama board a ogula kumafuna malo ocheperako a pini kuti asunge impedance yolamulidwa ndikuchepetsa kutalika kwa stub. Mutu wa pitch pin wa 1.27mm umakwaniritsa izi, kupereka kulumikizana kocheperako komwe kumathandizira zofunikira pakukhulupirika kwa chizindikiro pomwe kumakhalabe kogwirizana ndi njira zokhazikika za SMT assembly. Tawona kuwonjezeka kosalekeza kwa chiwerengero cha zolumikizira za 1.27mm m'mabilu azinthu zomwe timalandira kuchokera kwa makasitomala athu a assembly-house m'zaka zitatu zapitazi, ndipo tikuyembekeza kuti izi zipitilira.
Kumvetsetsa momwe mungatchulire, kupeza, ndi kusonkhanitsa mabanja onse awiri olumikizirana ndikofunikira kwambiri pa nyumba iliyonse yolumikizirana ya PCB yomwe imatumikira gawo la zamagetsi. Mu bukhuli, tikufotokoza zaukadaulo wa pitch iliyonse, kufotokozera kapangidwe kothandiza ndi njira zogulira, ndikugawana magawo owongolera khalidwe omwe timagwiritsa ntchito popanga zinthu zathu kuti tiwonetsetse kuti mutu uliwonse wa pini womwe timatumiza ukukwaniritsa miyezo yovuta ya mizere yodziyimira yokha.
Muyezo wa 2.54mm: Ntchito Yogwirizanitsa Ma PCB
Cholumikizira cha pin cha 2.54mm (0.100-inch) mwina ndicho cholumikizira cha board-to-board komanso board-to-waya chomwe chimagwiritsidwa ntchito kwambiri mumakampani amagetsi. Chiyambi chake chimachokera ku masiku oyamba opanga ma PCB, ndipo ngakhale kuti kwa zaka zambiri kwasintha kupita ku ukadaulo woyika pamwamba, 2.54mm pitch sinangopulumuka komanso yakula bwino. Timapanga mamiliyoni a ma pin headers a 2.54mm mwezi uliwonse ku Ningbo facility yathu, ndipo kufunikira kukupitirirabe kwakukulu pagulu lililonse lazinthu zomwe timapereka.
Zinthu zingapo zikufotokoza za kulamulira kwa phula ili. Choyamba, mtunda wa 2.54mm umapereka mpata waukulu pakati pa mapini oyandikana, zomwe zikutanthauza kuti pali kulekerera kwakukulu kwa kupanga. Makina olowetsa okha amatha kuyika zolumikizira izi pa liwiro lalikulu ndi zilema zochepa kwambiri, ndipo ngakhale kuyika pamanja panthawi yojambula kapena kukonzanso kumakhala kosavuta. Chachiwiri, gawo la pini la ma header a 2.54mm nthawi zambiri limakhala lalikulu 0.64mm, zomwe zimapangitsa pini iliyonse kukhala yolimba kwambiri komanso mphamvu yonyamula magetsi yomwe imayendetsa bwino njanji zamagetsi ndi I/O yogwiritsidwa ntchito nthawi zonse.
Mu ma motherboard amagetsi ogwiritsa ntchito, nthawi zonse timawona ma pin headers a 2.54mm omwe amagwiritsidwa ntchito pa ma JTAG debug interfaces, ma SPI ndi ma I2C programming headers, ma fan connectors, ma front-panel control signals, ndi ma assistant power distribution. Awa ndi ma interfaces komwe liwiro la ma signal ndi lochepa (nthawi zambiri pansi pa 50 MHz), kulimba kwa makina ndikofunikira, ndipo kuthekera kolumikiza ndikuchotsa ma test fixtures kapena ma cables pamanja ndikofunikira pakupanga. Muyezowu umathandizidwanso ndi chilengedwe: pafupifupi aliyense wopereka ma connector, ma cable assembling house, ndi PCB design tool amapereka zinthu ndi mapazi ogwirizana ndi 2.54mm.
Kuchokera ku nyumba yosonkhanitsira, phula la 2.54mm limapereka ubwino waukulu pa ntchito. Ma profiles a solder obwerezabwereza ndi abwino, chiopsezo cha kuyika miyala m'manda ndi chochepa chifukwa cha kuchuluka kwa pini, ndipo kuyang'ana m'maso ndikosavuta chifukwa phula lalikulu limapangitsa kuti fillets za solder zikhale zosavuta kuziyesa. Tikamakambirana nawo za phindu la makasitomala athu, ma board omwe ali ndi zolumikizira zambiri za 2.54mm nthawi zonse amawonetsa zolakwika zochepa pa mwayi wa miliyoni imodzi kuposa omwe ali ndi njira zina zochulukirapo. Mbiri yodalirika iyi ndichifukwa chake opanga ambiri amasunga mwadala ma interface amphamvu ndi olamulira pa gridi ya 2.54mm ngakhale akamasuntha njira zazizindikiro kupita ku ma pitches abwino.
Njira Yokhala ndi Kachulukidwe Kakakulu ka 1.27mm: Kusunga Malo ndi Kukhulupirika kwa Ma Signal
Ngakhale kuti pitch ya 2.54mm imagwira ntchito bwino kwambiri polumikizirana ndi anthu ambiri, imakhala vuto lalikulu pamene malo ogulitsa nyumba ndi ochepa ndipo ma signal frequency akukwera kuposa ma megahertz mazana angapo. Apa ndi pomwe mutu wa pinch wa 1.27mm (0.050-inch) umalowa pachithunzichi. Mwa kuchepetsa pakati pa pinch pakati, pitch ya 1.27mm imalola opanga kulongedza pafupifupi kanayi kuchuluka kwa kulumikizana m'mphepete mwa bolodi kapena malo omwewo.
Kusunga malo kumaonekera nthawi yomweyo tikayerekeza kukula kwa mapazi mbali imodzi. Mutu wa 2x25 pin pa 2.54mm pitch umafikira 63.5mm m'litali; kasinthidwe komweko ka 50-pin pa 1.27mm pitch kamafuna 31.75mm yokha. Pa chipangizo chogwiritsidwa ntchito ndi ogula chaching'ono - sipika yanzeru, chowongolera chovala, kapena HMI yaying'ono yamafakitale - kusiyana kumeneku kungakhale malire pakati pa kuyika kapangidwe kake mu malo otetezedwa kapena kufunikira kukonzanso bolodi kokwera mtengo.
Kupatula kusunga malo ofunikira, 1.27mm pitch imapereka ubwino wofunikira wa chizindikiro ndi mgwirizano. Kutalika kwa ma pin afupiafupi ndi kulumikizana kolimba pakati pa ma pin oyandikana kumachepetsa kulowetsedwa kwa ma parasitic, zomwe zimapangitsa kuti chizindikiro chikhale bwino kwambiri. Tikamagwira ntchito ndi makasitomala popanga ma board omwe amanyamula ma signal owonetsera a LVDS, ma interfaces a kamera ya MIPI, kapena njira za data za USB 3.2, amasankha kwambiri ma pin headers a 1.27mm panjira zofunika izi. Kutalika kwa pin kochepa kumachepetsanso chiopsezo cha kuwunikira komwe kumachitika chifukwa cha stub, nkhawa yomwe imakhala yayikulu kuposa pafupifupi 400 MHz.
Ndikofunikira kuzindikira kusiyana. Kuyimba kwa 1.27mm kumafuna kulekerera kolimba kwa kupanga - kulekerera kofanana kuyenera kulamulidwa mkati mwa 0.10mm, ndipo kulekerera kwa pin alignment kuli pafupifupi theka la komwe kumaloledwa pa 2.54mm. Zofunikira zokhazikika zokha zimawonjezeka, ndipo kuwunika kwa X-ray kapena AOI kungafunike kuti zitsimikizire mtundu wa solder joint pansi pa matupi a fine-pitch. Timathetsa mavutowa kudzera mu ma dies olondola, kuwunika kwa masomphenya pa mzere pa malo athu opangira, komanso kugwirizana kwambiri ndi magulu a akatswiri a njira zamakasitomala athu kuti atsimikizire kuti akugwirizana ndi kupanga zinthu zambiri asanayambe.
Njira Zokonzera Ma PCB Awiri Pa Nyumba Zosonkhanitsira
Kupanga bolodi la amayi lomwe lili ndi ma pin headers a 2.54mm ndi 1.27mm kumafuna kukonzekera mosamala kuti tipewe mavuto omwe amakumana nawo. Tathandizira mapangidwe mazana ambiri a bolodi la dual-pitch kwa zaka zambiri, ndipo njira zingapo zabwino zakhala zikutsimikizira kufunika kwake. Mfundo yoyamba ndi kusiyanitsa malo. Tikukulimbikitsani kuyika zolumikizira zonse za 2.54mm m'dera limodzi la bolodi ndi zolumikizira zonse za 1.27mm m'dera losiyana, makamaka m'mbali zosiyanasiyana za bolodi. Kulekanitsa kumeneku kumapangitsa kuti zida zikhazikike mosavuta panthawi yolumikizira yokha, kuchepetsa chiopsezo chosinthana ndi zigawo mwangozi, komanso kumapangitsa kuti kuwunika kwabwino kukhale kogwira mtima kwambiri.
Mfundo yachiwiri ndi yokhazikika pa malo olowera. Ma pin headers onse a pitch omwewo pa bolodi loperekedwa ayenera kukhala ndi malo ofanana poyerekeza ndi mzere woyambira wa bolodi. Kuchita izi kumachepetsa kuchuluka kwa kusintha kwa ma feeder ndi kuzungulira kwa nozzle komwe kumafunikira ndi makina osankha ndi kuyika, zomwe zimapangitsa kuti nthawi yozungulira ikhale yabwino komanso kuchepetsa zolakwika zoyika. Malinga ndi zomwe takumana nazo, ma board omwe amatsatira njira iyi amakwaniritsa kuchuluka kwa malo olowera mwachangu ndi 8 mpaka 12 peresenti kuposa omwe ali ndi malo olowera osiyanasiyana.
Kuyang'anira kutentha panthawi yobwezeretsanso mphamvu ndi chinthu china chofunikira kuganizira. Ma pin headers a 2.54mm ndi 1.27mm ali ndi ma thermal status osiyanasiyana, zomwe zikutanthauza kuti amayamwa ndi kutulutsa kutentha pamlingo wosiyana panthawi yobwezeretsanso mphamvu. Ngati mitundu yonse iwiri yolumikizira yayikidwa pa bolodi limodzi, reflow profile iyenera kukonzedwa kuti igwirizane ndi kutentha kwakukulu kwa thupi la 2.54mm popanda kutentha kwambiri ma pin 1.27mm ofooka kwambiri. Tikukulimbikitsani kusankha wogulitsa ma pin headers omwe angapereke malangizo atsatanetsatane a kutentha kutengera kuchuluka kwa ma pin ndi ma plating a zigawo zomwe zalamulidwa, zomwe gulu lathu la mainjiniya nthawi zonse limapereka kwa ogwirizana nawo a assembly-house.
Pomaliza, ganizirani za magawo ochotsera mapanelo ndi momwe angagwirire ntchito. Zolumikizira zazing'ono za 1.27mm zimakhala zosavuta kuwonongeka chifukwa cha kupindika kwa bolodi panthawi yochotsa mapanelo. Ngati zolumikizira za 1.27mm zili pafupi ndi m'mphepete mwa bolodi kapena m'mbali mwa ma tabu osweka, zowonjezera zothandizira kapena kusintha kwa kuya kwa V-score kungakhale kofunikira. Tikulangiza makasitomala athu kuti agawane nafe kapangidwe kawo ka mapanelo kumayambiriro kwa njira yopangira kuti tithe kuwonetsa madera omwe angakhale oopsa ndikupereka malingaliro osintha malo olumikizirana asanayambe kugwiritsa ntchito zida.
Zosankha Zazinthu ndi Zopangira: Tin, Golide, ndi Zopangira Zosankha
Kusankha zipangizo zomangira ma pin headers kumakhudza mwachindunji mtengo, kuthekera kosungunula, kukana kukhudzana, ndi moyo wa nthawi yokumana. Pa ma motherboard ogwiritsira ntchito zamagetsi, timapereka njira zitatu zomangira ma plating, komanso kumvetsetsa nthawi yoti titchule chilichonse kungathandize kusunga ndalama zambiri zogulira popanda kuwononga ubwino wa chinthu.
Kuyika zitini ndi njira yotsika mtengo kwambiri komanso ndiyo njira yokhazikika yopangira zinthu zomwe ogula amagula zomwe zimakhala ndi mtengo wotsika. Ma pin headers athu odziwika bwino okhala ndi zitini amagwiritsa ntchito matte-tin finish ya makulidwe a ma micrometer 3 mpaka 5 pamwamba pa nickel barrier layer. Matte tin ndi yabwino kuposa tin yowala yopangira reflow soldering chifukwa imapanga ma intermetallic bonds odalirika komanso imaletsa mapangidwe a tin-whisker. Pa ma interfaces omwe amawona mating cycles osakwana 50 pa moyo wonse wa malonda - omwe amaphimba ma debug headers ambiri, ma programming interfaces, ndi ma board-to-board connections amkati - tin plating ndi yokwanira ndipo imayimira mtengo wabwino kwambiri.
Kuphimba golide pamwamba pa nickel kumatchulidwa ngati pakufunika kudalirika kwambiri kapena kupirira kwakukulu kwa nthawi yokumana. Timayika wosanjikiza wagolide wa ma micrometer 0.76 mpaka 1.27 (ma micro-inchi 30 mpaka 50) pamwamba pa chotchinga cha nickel cha ma micrometer 1.27 mpaka 2.54. Zolumikizira zophimbidwa ndi golide zimasunga kukana kokhazikika kwa kulumikizana mkati mwa nthawi 500 kapena kuposerapo zokumana ndipo zimapewa kukhuthala ndi dzimbiri m'malo onyowa. Izi zimapangitsa kuti golide ukhale chisankho chokhazikika cha zolumikizira zakunja, zolumikizira zoyesera ndi kuyeza, ndi ntchito iliyonse komwe cholumikizira chingakhale chosasunthika kwa nthawi yayitali musanagwiritse ntchito.
Kusankha ma plating kumayimira malo apakati omwe ali ndi mtengo wabwino kwambiri. Munjira iyi, malo olumikizirana ndi pini amalandira golide pomwe mchira wa solder umasunga chitsulo. Njira iyi imayang'ana kwambiri ndalama zokonzera ma plating pomwe ndizofunikira kwambiri - pa malo olumikizirana - pomwe ndalama zogulira solder zimakhala zochepa. Tikuwona kusankha ma plating komwe kumafotokozedwa kwambiri mu zamagetsi apakatikati, komwe ziyembekezo zodalirika za malonda zikukwera koma kukakamizidwa kwa mtengo wa zinthu kumakhalabe kwakukulu. Njira zathu zonse zokonzera ma plating zimagwirizana ndi zofunikira za kukula ndi magwiridwe antchito zomwe zafotokozedwa mu IEC 60603-2, kuonetsetsa kuti makina olumikizirana amagwirizana bwino padziko lonse lapansi.
Kuwongolera Ubwino: Kugwirizana, Mphamvu Yosungira Pin, ndi Kutha Kugulitsa
Kuwongolera khalidwe pakupanga ma pin header sikofunikira — ndi maziko omwe kuchuluka kwa zokolola ndi kudalirika kwa zinthu zomaliza kumadalira. Timakhala ndi njira yowunikira magawo ambiri yomwe imaphimba magawo onse ofunikira kuyambira pa satifiketi ya zinthu zopangira mpaka kulongedza komaliza. Kwa nyumba zosonkhanitsira za PCB zomwe zimayesa ogulitsa ma pin header, miyezo itatu yofunika kwambiri yowunikira ndi coplanarity, mphamvu yosungira ma pin, ndi kuthekera kogulitsa.
Coplanarity imatanthauza momwe mapini onse mu cholumikizira amakhalira pamalo amodzi. Pa malo okhazikika a SMT, coplanarity iyenera kuyendetsedwa mkati mwa 0.10mm pa ma header a 2.54mm pitch ndi mkati mwa 0.08mm pa ma header a 1.27mm pitch. Ngati coplanarity ikupitirira kulekerera kumeneku, mapini ena sangagwirizane bwino ndi solder paste panthawi yoyika, zomwe zimapangitsa kuti solder ilowe kapena kuzizira pambuyo pobwezeretsanso. Timayesa coplanarity pa malo aliwonse opangira pogwiritsa ntchito optical flat comparators ndikupereka mapepala a data ndi kutumiza kulikonse.
Mphamvu yosungira ma pin — mphamvu yofunikira pochotsa pini kuchokera ku insulator holo — ndi muyeso wa kulimba kwa makina. Pa ma pin a 2.54mm, timatchula mphamvu yosungira osachepera 0.5 kgf; pa ma pin a 1.27mm, mphamvu yocheperako ndi 0.3 kgf, kuwonetsa malo ocheperako olumikizirana. Ma pin omwe amalephera kuyesa mphamvu yosungira akhoza kuchotsedwa panthawi yogwira ntchito pa bolodi, kuyesa kokha, kapena ntchito ya m'munda. Chilichonse chomwe timatumiza chimayesedwa kuti chitsimikizire kuti chikutsatira miyezo iyi.
Kuthekera kwa kugulitsa kumayesedwa malinga ndi IPC-A-610 njira zovomerezeka. Timachita mayeso onyowa ndi kuwunikira ma pini a zitsanzo kuchokera pakupanga kulikonse kuti titsimikizire kuti plating imapereka chitetezo chokhazikika komanso chopanda kanthu cha solder. Pa ma pini ophimbidwa ndi tin, timachitanso mayeso okalamba mwachangu pa kutentha kwakukulu ndi chinyezi kuti titsimikizire kuthekera kwa solder kwa nthawi yayitali. Mndandanda wathu wonse wa zinthu za mutu wa pini imapangidwa motsatira miyezo iyi, ndipo timalandira kuwunika kwa anthu ena pa njira zathu zabwino nthawi iliyonse.
Zofunika Kuganizira Zogula Zambiri pa Nyumba Zosonkhanitsira za PCB
Kugula ma pin header ambiri opangira zamagetsi kumafuna zambiri osati kungoyerekeza mitengo ya mayunitsi okha. Timagwira ntchito limodzi ndi magulu ogula zinthu kuti tikonze bwino mtengo wonse wogulira zinthu, ndipo zinthu zingapo zimasiyanitsa nthawi zonse unyolo wa ma pin header womwe umayendetsedwa bwino ndi womwe umagwira ntchito.
Choyamba chomwe tiyenera kuganizira ndi kuphatikiza. Kupeza ma pin header a 2.54mm ndi 1.27mm kuchokera kwa wopanga m'modzi — m'malo mogawa voliyumu pakati pa ogulitsa angapo — kumabweretsa zabwino zenizeni: zolemba zabwino zogwirizana, malo amodzi olumikizirana kuti asinthe mainjiniya, kutumiza pamodzi komwe kumachepetsa ndalama zotumizira katundu, komanso kuthekera kokambirana bwino pamitengo ya voliyumu. Timapereka njira zolipirira mitengo zomwe zimapatsa mphoto ma oda ogwirizana m'mabanja osiyanasiyana komanso ma connector configurations.
Kuyang'anira nthawi yotsogolera ndi chinthu chachiwiri chofunikira kwambiri. Ma configurations wamba a 2.54mm amatumizidwa kuchokera ku nyumba yathu yosungiramo katundu ya Ningbo mkati mwa masiku atatu mpaka asanu ogwira ntchito. Kuwerengera ma pin, ma plating apadera, kapena mitundu ya 1.27mm kumafuna masiku 15 mpaka 25 ogwira ntchito kutengera kuchuluka kwa zinthu. Timasunga mapangano achitetezo ndi makasitomala athu okhazikika, ndikusunga zinthu zomwe zingathe kuyimitsidwa pakangopita nthawi yochepa kuti zikwaniritse kukwera kwa zinthu popanda mtengo wowonjezera wa zinthu zomwe zili m'nyumba yosonkhanitsira.
Zikalata ndi kutsatira malamulo siziyenera kunyalanyazidwa. Kutumiza kulikonse komwe timatumiza kumaphatikizapo ziphaso zosonyeza kutsata malamulo, malipoti owunikira, zotsatira za mayeso a makulidwe a plating, ndi zilengezo za RoHS/REACH. Kwa nyumba zosonkhanitsira zomwe zimatumikira misika yolamulidwa monga zida zamankhwala kapena zinthu zogulira zamagalimoto pafupi, titha kupereka zilengezo zakuthupi mu mtundu wa IPC-1752 ndikuthandizira kuwunika kwa fakitale pansi pa mapulogalamu oyenerera makasitomala. Kukhazikitsa maziko a zilengezo izi kumayambiriro kwa ubale wa ogulitsa kumachotsa kuchedwa panthawi yowunikira yomwe ikubwera ndikufulumizitsa nthawi yopangira mapangidwe atsopano a bolodi.
Mafunso Ofunsidwa Kawirikawiri
Kodi kusiyana pakati pa ma pin headers a 2.54mm ndi 1.27mm ndi kotani?
Kusiyana kwakukulu ndi pitch — mtunda wa pakati ndi pakati pakati pa ma pins oyandikana. Pini ya 2.54mm imagwiritsa ntchito pitch ya 0.100-inch yomwe yakhala ikugwiritsidwa ntchito kuyambira nthawi yopanga ma PCB, yomwe imapereka mphamvu yamphamvu yamakina komanso kusweka kosavuta pamanja. Pini ya 1.27mm imadula pakati pa mtunda umenewo, zomwe zimapangitsa kuti pini ikhale yocheperako kuwirikiza kanayi pa malo aliwonse. Mtundu wa 1.27mm ndi woyenera kwambiri pakugwiritsa ntchito ma signal routing othamanga kwambiri, zamagetsi ang'onoang'ono, komanso mapangidwe omwe malo ogulitsa nyumba ndi apamwamba kwambiri. Mitundu yonseyi imapezeka mu mawonekedwe owongoka, a right-angle, komanso a SMD ochokera ku NBGJGE.
Kodi ndingagwiritse ntchito ma pin headers a 1.27mm ngati njira yosinthira mwachindunji ma headers a 2.54mm pamapangidwe a PCB omwe alipo?
Ayi, ma pin header a 1.27mm si olowa m'malo mwa ma header a 2.54mm. Kupinga kosiyana kumatanthauza kuti mapazi a PCB, mapangidwe a mabowo, ndi njira zoyendetsera zonse ziyenera kukonzedwanso. Kuyesa kusintha chimodzi m'malo mwa china kumabweretsa kusakhazikika bwino komanso kulephera kwa kusonkhana. Komabe, ngati mukupanga bolodi latsopano kapena kukonzekera kusintha, kusintha njira zofunika kwambiri za chizindikiro kukhala 1.27mm pomwe mukusunga ma power ndi mapulogalamu pa 2.54mm ndi njira yotsimikizika yomwe nyumba zambiri zosonkhanitsira zimagwiritsa ntchito kuti zigwirizane ndi kuchulukana ndi kupanga.
Kodi ndi njira ziti zokonzera ma pin headers zomwe zimagwiritsidwa ntchito pa zamagetsi?
Pa ma motherboard amagetsi a ogula, timapereka njira zitatu zokhazikika zokonzera: tin plating (yotsika mtengo, yoyenera kugwiritsa ntchito kwambiri pamitengo yotsika mtengo yokhala ndi mating cycles osakwana 50), golide plating pamwamba pa nickel barrier (0.76 mpaka 1.27 micrometers golide makulidwe, ovoteledwa pa mating cycles opitilira 500, okondedwa pa mating applications odalirika komanso opitilira ma frequency), ndi kusankha ma plating komwe dera lolumikizana limalandira golide pomwe mchira wa solder umalandira tin. Selective plating imakonza mtengo poyerekeza ndi magwiridwe antchito. Zosankha zonse zimagwirizana ndi IEC 60603-2 dimensional ndi electrical specifications.
Kodi nyumba zosonkhanitsira za PCB zimatsimikiza bwanji ubwino wa mutu wa pini musanayike?
Nyumba zosonkhanitsira zinthu nthawi zambiri zimatsimikiza magawo atatu ofunikira a khalidwe: coplanarity (mapini onse ayenera kukhala mkati mwa 0.10mm kuchokera pa malo owonetsera kuti akhazikike okha), mphamvu yosungira mapini (pini iliyonse iyenera kupirira mphamvu yocheperako yotulutsa, nthawi zambiri 0.5 kgf ya 2.54mm ndi 0.3 kgf ya 1.27mm, kuti zitsimikizire kuti makina ndi olimba panthawi yogwira ntchito), komanso kuyesa kuthekera kosokera malinga ndi miyezo ya IPC-A-610. Timapereka deta yowunikira kutumiza ndi ziphaso zosonyeza kuti tikutsatira dongosolo lililonse lazinthu, kuphatikiza malipoti amitundu ndi miyeso ya makulidwe a plating.
Kodi nthawi yopezera zinthu zambiri komanso kuchuluka kwa zinthu zochepa zomwe zimaperekedwa pa maoda a mutu wa pini yochuluka ndi ziti?
Ma pin header a 2.54mm omwe ali ndi mawonekedwe ofanana (1x40, 2x20, 2x25) amapezeka m'masitolo okhala ndi nthawi yoyambira ya masiku atatu mpaka asanu ogwira ntchito. Kuwerengera ma pin, ma plating osakhazikika, kapena mitundu ya 1.27mm yokhala ndi kuchuluka kwakukulu nthawi zambiri kumafuna masiku 15 mpaka 25 ogwira ntchito kutengera kuchuluka ndi mawonekedwe. Kuchuluka kwa oda yathu yocheperako kumayambira pa zidutswa 1,000 pazinthu wamba ndi zidutswa 5,000 pazokonzedwa mwamakonda. Timasunga zinthu zotetezeka kwa makasitomala obwerezabwereza ndipo timapereka mapulogalamu okonzekera otumizira nyumba zosonkhanitsira zomwe zikupitilira kupanga.
Kodi mumapereka chithandizo chaukadaulo pa kapangidwe ka PCB footprint ndi kapangidwe ka dual-pitch?
Inde, timapereka chithandizo chaukadaulo chokwanira kwa mainjiniya a mapangidwe a PCB. Izi zikuphatikizapo zojambula zoyendetsedwa ndi mapazi mu mawonekedwe a DXF ndi Gerber a mitundu yonse ya ma pin header, mitundu ya 3D STEP yotsimikizira kuchotsedwa kwa makina, ndi zolemba za ntchito zomwe zikufotokoza njira zabwino kwambiri zoyikira bolodi la dual-pitch. Gulu lathu la mainjiniya likhozanso kuwonanso mafayilo anu opanga ndikupangira makonzedwe abwino kwambiri a ma pin header kutengera zoletsa zanu zosonkhanitsira, mbiri yanu yobwezeretsanso, ndi zofunikira za chinthu chomaliza. Lumikizanani nafe kudzera patsamba lathu kuti mupemphe zikalata zothandizira kapangidwe.