Incazelo ye-PCB engu-94V-0: Isilinganiso Sokuvutha kanye Nokukhethwa Kwezinto

I-“94V-0 PCB” ivame ukubhekisela ebhodini noma ezintweni ezihlonzwe ngesigaba sokusha kwe-UL 94 V-0. Akuyona ikhemistri ye-laminate ehlukile, incazelo ephelele kagesi noma ubufakazi bokuthi umkhiqizo ohlanganisiwe uphephile kuzo zonke izinhlelo zokusebenza. Uma ucacisa ama-PCB , khomba izinto eziqondile kanye nezidingo zokwakha ngaphezu kwesigaba somlilo.

Kusho ukuthini ukuthi i-94V-0 ku-PCB?

I-UL 94 ihlola ukuziphatha kokushisa kusetshenziswa izivivinyo zelabhorethri ezithile. I-V-0 iwukuhlukaniswa okuvela ekuhlolweni kokushisa okuqondile; ibheka ukubonwa okungaphezu kokukodwa, okuhlanganisa ukuziphatha kwangemva komlilo nokuthi izinhlayiya ezivuthayo ziyayivuthela yini inkomba. Isitatimende esifushane esithi “kuyacima ngemizuzwana eyi-10” asichazi izindlela zokwamukela eziphelele.

Kumadizayini e-PCB , phatha ukumaka njengento eyodwa okufanele uyihlole. Qinisekisa irekhodi lokuqashelwa elifanele, ibanga lezinto ezibonakalayo, ukujiya kanye nokwakhiwa, kanye nezidingo zomkhiqizo wokugcina.

Lokho okungakumiseli isilinganiso

• I-voltage yokusebenza, amandla wamanje noma i-impedance.
• Izinga lokushisa eliphezulu lesevisi, impilo yokujikeleza kokushisa noma ukuqina komshini.
• Isimo sokungabi ne-halogen, ukuhambisana nemithi enqunyelwe, ubuthi bentuthu noma ukuphinde kusetshenziswe.
• Ukuhambisana nokuhlanganiswa okuphelele noma imishini eqediwe.

Ukuhlukaniswa kwe-UL 94 kanye nobubanzi bako

Ukuhlukaniswa okujwayelekile kwe-V-0, V-1 kanye ne-V-2 kusebenzisa isampula eqondile, kuyilapho i-HB isebenzisa ukuhlolwa okuvundlile. Ukuhlukaniswa kunezindlela ezahlukene zokwamukela. Ukuhlolwa kwe-5VA kanye ne-5VB kanye nokuhlukaniswa kwe-VTM kwezinto ezincane kusebenzisa ezinye izindlela; i-V-0 akuyona ukuhlukaniswa okuphezulu kakhulu kuzo zonke izindlela ze-UL 94.

I-UL ichaza lo mehluko ngokubuka kwayo izindlela zokuhlola ukusha . Ekukhiqizweni kwe-PCB , qinisekisa ukuthi izinto zokwakha kanye nokwakhiwa okwenziwe kuhlanganiswe yini yimibhalo edingekayo ye-oda.

Gcina Ukuvutha Kuhlukile Kwezinye Izidingo Zezinto Ezibalulekile

Ukuziphatha kwe-Glow-wire, inkomba yokulandelela okuqhathanisayo (i-CTI), ukuguga kokushisa kanye nokujikeleza kokushisa kuchaza izakhiwo noma ukuhlolwa okuhlukile. Akuzona izindlela ezishintshanayo zokwabela ukuhlukaniswa kwe-UL 94 V-0.

Bhala lezi zidingo ngokwehlukana. Cela ishidi ledatha elifanele, izimemezelo kanye nolwazi lokuqashelwa kunokuphatha uphawu lomlilo oluphrintiwe njengobufakazi bazo zonke.

Indlela Yokuhlola Irekhodi Lokuqashelwa Kwezinto Ezibalulekile Noma Lebhodi

Qala ngegama lomkhiqizi, inombolo yefayela kanye nencazelo yezinto noma ibhodi enikeziwe yephrojekthi. Buyekeza ububanzi kanye nemibandela yerekhodi lamanje, kufaka phakathi ukujiya okusebenzayo kanye nemikhawulo yokwakha. Ukuqashelwa kwezinto kanye nokuqashelwa kwebhodi elenziwe kuyizingxenye ezahlukene zobufakazi.

1. Qondanisa umhlinzeki kanye nezinga nebhili lezinto ezikhishwe noma i-stackup.
2. Hlola ukuthi ukujiya okuphakanyisiwe kanye nokwakhiwa kuwela yini ngaphakathi kwerekhodi elifanele.
3. Hlola ukushisela kwe-assembly kanye nezimo zokushisa nokusebenza lapho kufanele khona.
4. Qinisekisa ukuthi imaski yokusongelwa, izembozo noma ezinye izinto ezizoshintshwa azilethi ushintsho lokwakhiwa olungakabuyekezwa.
5. Gcina amadokhumenti adingekayo yiphrojekthi yomkhiqizo wokugcina.

I-UL ichaza ukuhlolwa okuhlukile kwebhodi eliphrintiwe ngezintambo ngaphansi kwe-UL 796 kanye ne-UL 796F . Uphawu olungenalutho oluthi “94V-0” aluthathi indawo yokuhlonza ibhodi langempela kanye nezimo ezifanele.

Izidingo Zesicelo Ngaphesheya Kwesilinganiso Somlilo

Imikhiqizo yabathengi, yezimboni, yezimoto kanye neyezokwelapha ingaba nezidingo zezinto ezibonakalayo zokusha, kodwa ezinye izidingo zayo ziyahluka. Ukuhlukaniswa kwamalangabi akumiseli ukufaneleka kwemoto ethile, idivayisi yezokwelapha noma uhlelo lwezindiza.

Ukuze uthole ugesi, buyekeza ukufudumala, isikhala, izinga lokushisa kanye nezimo zamaphutha ngaphansi kwezidingo zomkhiqizo ezifanele. Ukuze uthole isekethe eguquguqukayo ehambayo, buyekeza ukwakhiwa kwemishini kanye nokugoba ngokwehlukana. Ukuze uthole umkhiqizo olawulwayo, faka ithimba elinomthwalo wemfanelo lokuphepha komkhiqizo noma lokuthobela imithetho ecacisiwe. Khetha izinto ezizungeze ukusetshenziswa okuphelele kunegama lomlilo kuphela.

Ulwazi Okufanele Luhlinzekwe Ngokubukezwa Kwezinto Ze-Highleap PCB

Thumela imininingwane ye-stackup noma yezinto, ubukhulu obuqediwe, izidingo zethusi kanye nenqubo yokuhlanganisa ehlosiwe. Faka phakathi ukuhlukaniswa komlilo okudingekayo, noma yikuphi ukuhlonza kwefayela le-UL okudingekayo, izidingo zomkhiqizo wokugcina ezisebenzayo kanye nemibhalo elindelekile ngokulethwa.

Hlukanisa ukuhlukaniswa kwelangabi ezidingweni zikagesi, ezishisayo kanye nezemvelo ekucacisweni kwezinto ze-PCB . Uma kuphakanyiswa enye into, dinga ukuqhathanisa okubhaliwe kanye nokuvunyelwa ngaphambi kokukhishwa. Cela i-Highleap Electronics ukuthi iqinisekise ukwakhiwa okucashuniwe, ukutholakala kwezinto kanye nobufakazi obudingekayo be-oda elithile.

Lapho iphrojekthi idinga ukwakhiwa okuqashelwayo, lungisa ububanzi bayo kanye nemibandela ngaphambi kokukhiqiza. Lokhu kuvimbela incazelo yezinto ezibonakalayo ekhangayo ekubeni ukungafani phakathi kwekhotheshini, ukumakwa kwebhodi kanye nesidingo somkhiqizo.

Imibuzo ye-PCB engu-94V-0

Ingabe i-94V-0 isho ukuthi i-FR-4?

Cha. I-FR-4 ichaza isigaba sezinto; i-V-0 ichaza ukusha ngaphansi kokuhlolwa okuthile. Cacisa futhi uqinisekise kokubili izinto kanye nokuhlukaniswa okudingekayo.

Ingabe i-V-0 isho ukuthi ayinayo i-halogen, ayinabo ubuthi obuphansi noma ihambisana nemvelo?

Cha. Labo badinga ulwazi lwabo oluphathekayo kanye nezimemezelo ezifanele.

Ingabe i-V-0 isho ukuthi izinto azikwazi ukusha?

Cha. Ichaza ukuziphatha ngaphansi kokuhlolwa okulawulwayo. I-UL ichaza imikhawulo yokuhumusha izilinganiso ze-UL 94 ; isilinganiso asisona isiqinisekiso esijwayelekile ngokumelene nomlilo.

Yini okufanele ihlanganiswe yincazelo yokuthenga?

Khomba izinto zokwakha kanye nokwakhiwa, ukuhlukaniswa kwamalangabi okudingekayo kanye nemibhalo, kanye nezidingo zikagesi, zokushisa, zokuhlanganisa kanye nezomkhiqizo wokugcina ezisebenzayo.