Intshayelelo: Kutheni iPitch kunye neTermination zichaza uyilo lwakho lwePCB

Xa iinjineli zokuthenga kunye nabayili bePCB bekhangela umenzi webhloko yesiphelo se-pcb, abafuni nje umthengisi - basombulula umqobo woyilo ophakathi kwendlela yokusebenza kombane, ukuthembeka koomatshini, kunye noqoqosho lokudibanisa. Sichithe iminyaka engaphezu kwe-14 njengomvelisi weebhloko ze-terminal ze-pcb mount eNingbo, eTshayina, kwaye sibone impazamo efanayo iphindaphindwa kumawaka eeprojekthi: iinjineli zikhetha ibhloko yesiphelo ngokusekelwe kwixabiso lodwa, kodwa emva kweenyanga ezimbalwa zafumanisa ukuba iphimbo alihambelani noyilo lwebhodi, okanye indlela yokuphelisa ayinakujongana neemeko zokusingqongileyo zesicelo sokugqibela.

Masithethe ngqo: izigqibo ezimbini zobugcisa ezibalulekileyo xa kucaciswa ibhloko yesiphelo sendlela yokufakela i-PCB zezi ibala (isithuba esiphakathi ukusuka embindini ukuya embindini phakathi kweepali ezikufutshane) kunye indlela yokuphelisa (indlela ibhloko yesiphelo enamathela ngayo ngoomatshini nangombane kwi-PCB). Ezi parameter zimbini zilawula yonke into — umthamo wokuthwala umbane, ukumelana nombane, umgama wokukhula, inkqubo yokuhlanganisa, ukugcinwa kwentsimi, kunye neendleko zizonke zobunini. Ngenxa yokuba ezi ndlela zibaluleke kakhulu, ukuzifumanisa zingalunganga kuthetha ukuyila kwakhona i-PCB, ebiza kakhulu kuneebhloko zesiphelo ngokwazo.

Kweli nqaku, sithatha idatha yethu yomgangatho wefektri evela ekuveliseni ngaphezulu Iipali ezingama-50 ezigidi zeebhloko zesiphelo se-PCB ngonyaka ukuthelekisa i-pitch ye-2.54mm xa ithelekiswa ne-3.96mm, kunye nokupheliswa kwe-solder xa kuthelekiswa ne-screw. Siza kukunika idatha yobunjineli oyifunayo ukuze wenze umnxeba ochanekileyo - kwaye, inyanisekile, ukuze siphephe iintloko ezibuhlungu esizibukeleyo abathengi bethu benyamezela ngaphambi kokuba beze kuthi.

Iphimbo le-2.54mm vs 3.96mm: Uthelekiso olupheleleyo loBugcisa

Iphiko le-terminal block ye-PCB mount ayixhomekekanga kwi-intanethi — kuba iphimbo limisela ngokuthe ngqo amandla okumelana ne-voltage ngokusebenzisa imigama eqhekekayo kunye neyokususwa echazwe yi I-IEC 60947-7-4 kwaye UL 1059, ibhloko yepitch eyi-2.54mm isebenza ngokwemvelo kwi-voltage kunye nomsinga ophantsi kunebhloko yepitch eyi-3.96mm yoyilo olulinganayo.

Kutheni Ilizwi Libaluleke Ngaphezu Kokuba Ucinga

Xa siqeqesha iinjineli zethu ezintsha zezicelo eJ-Guang, isifundo sokuqala esizifundisayo zezi: i-pitch sisithintelo esisisiseko esilawula yonke iparameter yoyilo olusezantsi. I-pitch standard ye-0.1-intshi (2.54mm) ibuyela emva kwimihla yokuqala yoyilo lwe-PCB kwaye isasebenza kakhulu kwi-digital logic kunye nezicelo zesignali ezisebenzisa amandla aphantsi. I-pitch ye-0.156-intshi (3.96mm) yavela njengoko iimfuno zamandla zazikhula ngaphaya koko i-2.54mm yayinokukuthwala ngokukhuselekileyo.

Nantsi into esiyilinganisa imihla ngemihla kumgca wethu wemveliso:

Sibone utshintsho lwabathengi be-automation yemizi-mveliso yaseJamani ukusuka kwi-2.54mm ukuya kwi-3.96mm pitch emva kokuba umhloli wabo we-UL field ebonakalise umgama onganeleyo wokuqhekeka kwiprototype - utshintsho olubachithe iiveki ezisibhozo beyila kwakhona i-PCB. Loo mava asifundise, kwaye sinethemba lokuba aya kukufundisa: cacisa iphimbo ngokusekelwe kwiimfuno zevolthi kuqala, indawo yebhodi emva koko.

Ukukhetha nini i-2.54mm Pitch

Iphimbo le-2.54mm lolona khetho luchanekileyo xa izindlu zebhodi zikumgangatho ophezulu kwaye iimfuno zangoku/ze-voltage zincinci., kuba unyawo oluncinci luvumela uxinano oluphezulu lwepole kwi-PCB ngaphandle kokunciphisa ububanzi obuncinci bomkhondo obufunekayo ukuze isignali ihlale ithembekile.

Sicebisa i-pitch ye-2.54mm kwi:

• Izixhobo zesensor ze-IoT kunye nezixhobo zomphetho — apho imiqondiso yenqanaba le-logic ye-3.3V okanye ye-5V ilawula khona kwaye ireyithingi ye-6A igubungela kakuhle uhlahlo lwabiwo-mali lwamandla lwebhodi yonke.
• Izixhobo ze-elektroniki zabathengi ezinee-enclosures ezivaliweyo — apho utshintsho lwentambo yentsimi lunqabile kwaye ibhloko encinci yesiphelo inciphisa ubungakanani bemveliso iyonke, nto leyo enciphisa ngokuthe ngqo iindleko zezixhobo zokubumba ngenaliti kwindawo ebiyelweyo.
• Abaqhubi bezibane ze-LED — apho amandla e-12–24V DC angaphantsi kwe-5A aqhelekileyo kwaye ukupakisha okuncinci kukwahlulahlula okukhuphisanayo.
• Izixhobo zovavanyo kunye nokulinganisa — apho i-I/O yesignali enoxinano oluphezulu ifuna ukubekwa kweebhloko ezininzi zesiphelo ecaleni kwelinye icala lebhodi.

Kwifektri yethu, uthotho lwe-JG128-2.54 lusebenza ngobuninzi bemveliso obudlula iipali ezizigidi ezi-2 ngenyanga kwezi zicelo zichanekileyo. Umgca wemveliso ye-PCB screw terminal block ye-5.0mm ibonisa indlela usapho lwe-pitch ye-2.54mm olusasazeka ngayo ngokwendalo ukuya kwiindidi ze-pitch ephezulu xa abayili befuna ukunyusa umthamo wamandla wamandla ukuya phezulu.

Ukukhetha nini i-3.96mm Pitch

Iphimbo le-3.96mm liba yimfuneko xa usetyenziso lufuna usasazo lwamandla kwi-24V DC okanye ngaphezulu, okanye xa ibhloko yesiphelo kufuneka ihlale iphila ngokungcangcazela kunye nokujikeleza kobushushu kwinqanaba lemizi-mveliso ngaphandle kokonakala konxibelelwano.

Sicebisa i-pitch ye-3.96mm kwi:

• Iimodyuli ze-I/O ze-Industrial PLC kunye nolawulo lweemoto — apho imiqondiso yokulawula ye-24V DC kwi-8–12A iqhelekile kwaye iingcingo zasemabaleni ziphathwa rhoqo ziingcali zokulungisa ezinxibe iiglavu.
• Abalawuli bezixhobo ze-HVAC — apho imigca yolawulo lweenjini zecompressor kunye nezefeni zithwala imithwalo ye-inductive evelisa ii-voltage spikes ezidlula izilinganiso eziqhelekileyo.
• Iiyunithi zokubonelela ngombane kunye neenkqubo zolawulo lwebhetri — apho umlinganiselo ophezulu wamandla ususa imfuneko yee-conductors ezihambelanayo kwaye wenze lula i-bill yezinto.
• Ii-inverters zamandla avuselelekayo kunye nabalawuli betshaja — apho ukuvezwa ngaphandle kuthetha ukuba ibhloko yesiphelo kufuneka igcine indawo yayo yombane nokuba kukho uthuli oluninzi kunye nokufuma okujikelezayo.

Ukupheliswa kweSolder vs Screw: Imbono yeNqanaba lokuVelisa

Umlinganiselo wesibini wesigqibo seenkcukacha- kunye nalowo sifumana imibuzo yobuchwephesha ngayo- kukuba sikhethe ukupheliswa kwe-solder okanye ukupheliswa kwe-screw kwi-PCB mount terminal block. Olu khetho alukho malunga nokuba yeyiphi indlela "engcono"- kuba zombini zenzelwe iiparadigms ezahlukeneyo zendibano kunye neenkonzo, ukhetho oluchanekileyo luxhomekeke ngokupheleleyo kwindlela imveliso yokugqibela eza kuveliswa, ifakwe, kwaye igcinwe ngayo ubomi bayo bonke.

Ukupheliswa kweSolder: Yintoni na kwaye nini xa iphumelela

Ukupheliswa kwe-solder kuthetha ukuba iiphini ze-terminal block zifakwa ngemingxuma efakwe kwi-PCB kwaye zibotshelelwe ngokusisigxina kusetyenziswa i-solder enyibilikisiweyo — ngokuqhelekileyo kwinkqubo ye-wave soldering okanye inkqubo ye-selective soldering. Oku kudala ikhonkco lesinyithi phakathi kwephini kunye nephedi yePCB, xa isetyenziswa ngokufanelekileyo, ibonisa ukumelana noqhagamshelwano ngaphantsi kwe-1 milliohm kwaye iphile imijikelo yobushushu engaphezu kwama-2,000 ukusuka kwi -40°C ukuya kwi +105°C ngaphandle kokonakala okunokulinganiswa., ngokusekelwe kwidatha yethu yovavanyo lobomi olukhawulezileyo lwangaphakathi.

Iingenelo zokupheliswa kweSolder

• Uqhagamshelo oluhlala luhleli, olungenagesi — i-solder alloy yenza i-intermetallic compound ene-copper pad kunye ne-brass pin, ithintela i-oxidation kwindawo yokudibanisa.
• Ukumelana nokungcangcazela okuphezulu — kuba akukho ndawo zokubambelela ngoomatshini ukuze kukhululeke, amalungu e-solder adlula kwiiprofayili zokungcangcazela zesitimela ze-IEC 61373 ezithi iziphelo zezikrufu zisoloko zingaphumeleli ngaphandle kwe-compound yokutshixa intambo.
• Ixabiso eliphantsi ngeyunithi nganye — ukususa isikrufu, ikheyiji yocingo, kunye ne-insert enemisonto kunciphisa iindleko zezinto zokwakha malunga ne-30–40% kwinqanaba le-component.
• Uxinano oluphezulu lweepali — ngaphandle kokuba intloko yesikrufu ithathe indawo yebhodi, iibhloko zesiphelo se-solder zifumana isithuba esiqinileyo phakathi kwepali nepali kwaye zingabekwa kufutshane nemiphetho yebhodi.

Iingxaki zokupheliswa kweSolder

• Akukho kuphinda kusetyenziswe intambo kwi-field — utshintsho ngalunye lwentambo lufuna ukususwa kwe-solder kunye nokufakelwa kwakhona kwe-solder, into engenakwenzeka kwiimveliso ezibonelelwayo entsimini.
• Ukuxhomekeka kulawulo lwenkqubo — iindawo ezibandayo zokudibanisa i-solder, ukugcwaliswa kwemingxunya enganeleyo, kunye nokudibanisa i-solder zonke ziindlela zokusilela ezifuna ulawulo lwenkqubo olucwangcisiweyo kunye nokuhlolwa, ngokwe IPC-A-610 Iikhrayitheriya zokwamkelwa zeKlasi yesi-2 okanye yesi-3.
• Uxinzelelo lobushushu kwi-PCB — umjikelo ngamnye wokunyibilikisa ibhodi ubeka ibhodi kumaqondo obushushu angama-250–260°C, kwaye imijikelo yokuphinda uguqule kwakhona inokubangela ukuba ii-FR-4 substrates zingabi nanto yakwenza ukuba ixesha lokuhlala alilawulwa ngononophelo.

Ukupheliswa kweScrew: Yintoni na kwaye nini iphumelela

Ukuphelisa izikrufu kusebenzisa intsimbi efakwe ngentambo ebunjiweyo kwindawo yokugcina iibhloko. Intambo ehlutyiweyo ifakwa kwindawo evulekileyo yesiphelo, kwaye isikrufu esibambekileyo siyaqiniswa ukuze sibambe intambo kwikheyiji yoqhagamshelwano lwesinyithi — akukho mfuneko yokudibanisa i-PCB kwicala lentambo lonxibelelwano. Izikhonkwane zecala le-PCB zisadityaniswa, kodwa icala lokungena kwentambo lisebenza ngoomatshini kuphela.

Ngokunyaniseka sikhetha ukuphelisa izikrufu kwiintlobo ngeentlobo zezicelo zemizi-mveliso esizixhasayo. Isizathu siyasebenza: xa imodyuli ye-PLC I/O ingaphumeleli ngo-3:00 AM kumzi-mveliso eStuttgart, ingcali yokulungisa ayinayo intsimbi yokunyibilikisa — kodwa inaso isikrufu esinentloko ethe tyaba. Iindleko zexesha lokungasebenzi kwimveliso eyahlukeneyo ziphakathi kwe-$260,000 ngeyure ngokutsho kophando lwemizi-mveliso olwenziwe yi- I-Siemens, ngoko ke ukukwazi ukutshintsha ucingo ngemizuzwana endaweni yemizuzu kuthetha ukuba ukonga okusebenzayo kungaphezulu kwe-$0.05–$0.10 ngepali nganye yokuphelisa isikrufu.

Iingenelo zokuphelisa i-screw

• Ucingo lwentsimi olungenazixhobo okanye olusebenzisa isixhobo esinye — isixhobo esiqhelekileyo se-flathead okanye i-Phillips screwdriver sesona sixhobo sifunekayo, okwenza iibhloko ze-screw terminal zibe lukhetho oluqhelekileyo lwezixhobo ezilungiselelwa ukusebenza ebaleni.
• Akukho xinzelelo lobushushu ngexesha lokufakelwa kweentambo — i-PCB ayivezwa kubushushu obunyibilikayo ngexesha lokufakwa, nto leyo esusa umngcipheko wokuphakanyiswa kwephedi okanye umonakalo we-substrate ngenxa yokutshintshwa okuphindaphindiweyo.
• Ukuqinisekiswa okubonakalayo konxibelelwano — iingcali zinokubona ukuba ucingo lufakwe ngokupheleleyo na kwaye isikrufu siqinisiwe, ngokungafaniyo nejoyinti yesolder enomgangatho ofihliweyo ngaphantsi komphezulu.
• Ukuhambelana nentambo eqinileyo neyomeleleyo — ii-screw terminals zamkela zombini iintlobo zentambo ngaphandle kweengxaki zokuqhawula kunye nokuqhekeka kwentambo ezenza ukuba i-soldering stranded wire ibe yingxaki.

Iingxaki zokuphelisa i-screw

• Ukuxhomekeka kwi-torque — ukuqina okungaphelelanga kubangela ukumelana okuphezulu kokuthintana kunye noqhagamshelwano olungenaziphazamiso; ukuqina kakhulu kunokukrazula imisonto okanye kutyumze umqhubi wentambo. I-IEC 60947-7-4 umgangatho ucacisa uluhlu lwe-torque oluyi-0.4–0.5 N·m kwiiskrufu ze-M2.5, kwaye siqinisekisa ukuthotyelwa kwe-torque kwi-100% yeendawo zokuvelisa.
• Imfuneko yokubuyisela i-torque rhoqo — kwiindawo ezinokungcangcazela kakhulu ezifana nesitokhwe sikaloliwe okanye oomatshini abanzima, ii-screw terminals zingafuna ukulungiswa kwakhona ngamaxesha okulungiswa acwangcisiweyo, oko kongeza kwixabiso lilonke lobunini.
• Imvulophu enkulu ebonakalayo — indlela yokwenza izikrufu ithatha malunga ne-40% yomthamo ophezulu kunebhloko yesiphelo se-solder elinganayo, nto leyo ebalulekileyo kwiindlela zoyilo ezixineneyo kakhulu.

Kubathengi bethu abavavanya olu tshintshiselwano, sigcina uthelekiso oluneenkcukacha kuxwebhu lwemveliso yethu I-PCB screw terminal block 301 series, olu luhlu lwethu lwemveliso yokuphelisa izikrufu oluphezulu kakhulu kwaye lubonisa iiparameter zombane nezoomatshini esiziqinisekisileyo ngovavanyo lomntu wesithathu.

I-Decision Matrix: Ngowuphi uMdibaniso weSicelo sakho?

Ukuze sidibanise olu hlalutyo lube sisakhelo sesigqibo esisebenzisekayo, sakhe le matrix ilandelayo ngokusekelwe kwiminyaka eli-14 yamava obunjineli bezicelo kunye neengxoxo zeprojekthi zabathengi abangaphezu kwama-500. Yisebenzise njengendawo yakho yokuqala - kodwa qhagamshelana neqela lethu lobunjineli ukuba isicelo sakho sidlula kwiindidi ezahlukeneyo.

Umgangatho Wokuvelisa: Oko Ufanele Ukukufune Kumvelisi Wakho We-PCB Mount Terminal Block

Ayizizo zonke abavelisi beebhloko zesiphelo se-pcb abasebenza kwinqanaba elifanayo lomgangatho — kwaye ngenxa yokuba iibhloko zesiphelo zizinto ezibalulekileyo kukhuseleko apho ukusilela kwazo kunokubangela umlilo, umonakalo kwizixhobo, okanye ukwenzakala kwabasebenzi, inkqubo yomgangatho womenzi ibaluleke kakhulu njengenkcazo yemveliso.

Nantsi into esikholelwa ukuba wonke umthengi ufanele ayiqinisekise ngaphambi kokuba afake iodolo yokuthenga kuyo nayiphi na inkampani evelisa iibhloko zesiphelo sendlela ye-pcb:

1. Ukulandeleka kwezixhobo eziluhlaza

Apha e-J-Guang, sigcina ukulandeleka kwinqanaba leqela kumthengisi we-resin (sifumana kuphela kwiiklasi ze-Dupont kunye ne-BASF) ukuya kwi-terminal block egqityiweyo, kwaye sinikezela ngeziqinisekiso zezinto ezithunyelwayo kuyo yonke imithwalo.

2. Ubukhulu bokuQokelela koQhagamshelo

I-nickel plating kwiikhonkco zebronze isebenza njengesithintelo sokugqwala kunye nomphezulu ongenakugugiswa. Ubukhulu beplati engaphantsi kwe-2μm abuniki ukhuseleko olwaneleyo kuvavanyo lokutshiza ityuwa olusebenza iiyure ezingama-96 kwi-IEC 60068-2-11, nto leyo elinganisa iindawo zokusasazwa konxweme kunye neendawo ezinomswakama ophezulu. Sivavanya ubukhulu beplati kwi-XRF kuyo yonke inguqu yemveliso kwaye sipapashe iziphumo kwiingxelo zethu zokuhlolwa kwebhetshi - into abambalwa kakhulu abavelisi kwicandelo lethu lamaxabiso abazimisele ukuyenza.

3. Uvavanyo loMbane oluyi-100%

Ipali nganye yebhloko nganye yesiphelo esiyithumelayo idlula kuvavanyo lwe-100% continuity kunye ne-hipot kwi-voltage ye-1.5× rated ngaphambi kokuba ipakishwe. Kuba ixabiso loqhagamshelo olunye olungenaxesha kwimveliso egqityiweyo yomthengi lidlula kakhulu ixabiso lovavanyo olupheleleyo., sityale imali kwizixhobo zovavanyo ezizenzekelayo ezilandelanisa yonke ipali kwibhloko nganye yesiphelo kwimizuzwana engaphantsi kwemithathu. Ukuba uthenga kumvelisi owenza isampuli yezibalo kuphela, zibuze ukuba umngcipheko wokusilela kwentsimi ufanelekile na kwiipeni ezigciniweyo.

4. Uzinzo olunemilinganiselo

Ukunyamezelana kwepitshi kubaluleke kakhulu kwi-PCB assembly ezenzekelayo. Ukunyamezelana kwethu nendawo yepini yi-±0.05mm xa kuthelekiswa ne-housing datum — kuba i-pin offset ye-0.15mm nangaphezulu iya kubangela ukungaphumeleli kokufakwa kwimigca yokukhetha kunye nendawo kunye ne-wave soldering ezenzekelayo, nto leyo ekhokelela ekumisweni kwemigca ebiza abadibanisi bePCB amakhulu eedola ngeyure. Siqinisekisa oku kunyamezeleka kumatshini wokulinganisa olungelelanisiweyo (CMM) kutshintsho ngalunye lwesikhunta kunye neyure nganye ngexesha lokwenziwa kwemveliso.

Isiphelo: Qala ngeSicelo, Hayi ngeNkcazelo

Ukuba singakushiya nento enye esiyifundileyo kwiminyaka yethu eli-14 sisebenza umenzi webhloko yesiphelo se-pcb, ingaba yile: Eyona nkcazelo yebloko yesiphelo sendlela ilungileyo yile ihambelana neemeko zokwenyani zokusetyenziswa, hayi leyo ibukeka intle kakhulu kuthelekiso lwedatha. Sibukele iinjineli zichaza ngokugqithisileyo iibhloko zesiphelo se-screw ze-3.96mm kwi-node ye-sensor ye-5V, zichitha indawo yebhodi kunye nohlahlo-lwabiwo mali, kwaye sibukele iinjineli ezinetalente efanayo zichaza ngokugqithisileyo iibhloko ze-solder ze-2.54mm kwi-24V motor controller, nto leyo edale ukusilela kwentsimi okufihlakeleyo okuvele kwiinyanga ezili-18 emva kokusetyenziswa.

Icebiso lethu lilula. Hlola iimfuno zombane, umbane, okusingqongileyo, kunye neenkonzo zesicelo sakho ngaphambi kokuba uvule ikhathalogu okanye uthumele i-RFQ. Emva koko fumana i- umenzi webhloko yesiphelo se-pcb ngubani oza kukubuza loo mibuzo ifanayo— kuba umenzi ongabuziyo ngesicelo sakho akanandaba nokuba imveliso yakhe iyasebenza na kuso.

Kwi-Ningbo J-Guang Electronics, senza yonke i-pitch kunye ne-termination combination ekuxoxwe ngayo kweli nqaku phantsi kophahla olunye, ngenkqubo enye esemgangathweni, kunye nomgangatho omnye woxanduva. Nokuba ufuna iibhloko zesiphelo se-solder ze-2.54mm zesixhobo esinxitywayo ngumthengi okanye iibhloko zesiphelo se-screw ze-3.96mm zesilawuli sokuzenzekela kwefektri, sinezinto zokusebenza, iziseko zovavanyo, kunye namava okusetyenziswa ukuxhasa iprojekthi yakho ukusuka kwi-prototype ukuya kwimveliso yevolumu.