Siqinisekisa inani lemali ngokubalulwa kwempahla nokulawulwa kwekhwalithi. Izindinganiso zethu zokulawula ikhwalithi ziqinile kunalezo zabanye abahlinzeki, futhi ziqinisekisa ukuthi imikhiqizo yethu ingadlala ngokugcwele ekusebenzeni okulindelekile.

Noma kungekho mehluko ekuboneni kokuqala, imikhiqizo esezingeni eliphakeme ekugcineni izobiza kakhulu

Kungobuso lapho sibona umehluko, obaluleke kakhulu ekuqineni nasekusebenzeni kwe- PCB empilweni yonke. Amakhasimende awahlali ewubona lo mehluko, kepha angaqiniseka ukuthi ama-PCB ahlinzekwayo ahlangabezana nezindinganiso eziqinile kakhulu zekhwalithi.

Kungakhathaliseki inqubo yokukhiqiza kanye inhlangano noma ukusetshenziswa ezingokoqobo, PCB kufanele babe ukusebenza okuthembekile, okuyinto ebaluleke kakhulu. Ngaphezu kwezindleko ezifanele, ukukhubazeka kwenqubo yokuhlangana kungalethwa kumkhiqizo wokugcina yi-PCB, futhi amaphutha angenzeka enqubeni yokusetshenziswa yangempela, okuholele kwizimangalo. Ngakho-ke, ngokwalokhu kubuka, akukuningi ukusho ukuthi izindleko ze-PCB esezingeni eliphakeme azinakulinganiswa.

Kuzo zonke izingxenye zemakethe, ikakhulukazi lezo ezikhiqiza imikhiqizo ezindaweni ezisemqoka zohlelo lokusebenza, imiphumela yokwehluleka okunjalo ayicabangakali.

These aspects should be kept in mind when comparing PCB prices. Although the initial cost of reliable, guaranteed and long-life products is high, they are worth it in the long run.

Ukucaciswa kwe-PCB kudlula izidingo ze-IPC class 2

Ibhodi lesifunda elinokwethenjelwa okuphezulu – izici eziyi-14 ezibaluleke kakhulu ezikhethwe kuzici eziyi-103

1. 25 micron imbobo udonga zethusi ukujiya

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Ukuthembela okuthuthukisiwe, kufaka phakathi ukumelana nokwandiswa okuthuthukile kwe-z-axis.

Ubungozi bokwenza lokho

Izinkinga zokuxhuma kagesi ngesikhathi sokushaywa komgodi noma kwe-degassing, ukuhlangana (ukwahlukaniswa kwesendlalelo sangaphakathi, ukuqhekeka kodonga lomgodi), noma amaphutha kungenzeka ngaphansi kwezimo zomthwalo ngesikhathi sokusetshenziswa kwangempela. I-IPC isigaba 2 (indinganiso eyamukelwe amafemu amaningi) idinga ukugoqwa kwethusi okungaphansi okungama-20%.

2. Akukho ukulungiswa kwe-welding noma ukulungiswa kwesifunda okuvulekile

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Perfect circuit can ensure reliability and safety, no maintenance and no risk

Ubungozi bokwenza lokho

Uma ingalungiswa kahle, ibhodi lesifunda lizoba yisifunda esivulekile. Noma ukulungiswa kulungile, kunengozi yokwehluleka ngaphansi kwezimo zomthwalo (ukudlidliza, njll.), Okungenzeka kusetshenziswe uqobo.

3. Ukudlula izidingo zokuhlanzeka kokucaciswa kwe-IPC

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Ukuthuthukisa inhlanzeko ye-PCB kungathuthukisa ukuthembeka.

Ubungozi bokwenza lokho

Insalela nokuqoqana kwe-solder ebhodini lesifunda kuzoletha ubungozi kusendlalelo se-anti welding, futhi izinsalela ze-ion zizoholela engcupheni yokugqwala nokungcoliswa ebusweni be-welding, okungaholela ezinkingeni zokuthembeka (ukungasebenzi kahle kwe-solder joint / kagesi) , futhi ekugcineni kwandise amathuba okwehluleka kwangempela.

4. Vikela ngokuqinile impilo yesevisi yokwelashwa ngakunye kwendawo

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Ukuqina, ukuthembeka, nokunciphisa ubungozi bokungena komswakama

Ubungozi bokwenza lokho

Ngenxa yezinguquko ze-metallographic ekwelashweni komhlaba kwamabhodi wesifunda amadala, izinkinga ze-solder zingavela, futhi ukungena komswakama kungaholela ekuhlukanisweni, ungqimba lwangaphakathi nokwehlukaniswa kodonga lomgodi (isekhethi evulekile) kwinqubo yomhlangano kanye / noma ekusetshenzisweni kwangempela.

5. Sebenzisa ama-substrates aziwa umhlaba wonke – ungasebenzisi “imikhiqizo yasendaweni” noma imikhiqizo engaziwa

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Thuthukisa ukuthembeka nokusebenza okwaziwayo

Ubungozi bokwenza lokho

Ukusebenza kabi kwemishini kusho ukuthi ibhodi lesifunda alikwazi ukwenza njengokulindelekile ngaphansi kwezimo zomhlangano. Isibonelo, ukusebenza okuphezulu kokunwetshwa kuzoholela ku-delamination, isekethe evulekile kanye ne-warpage. Ukubuthakathaka kwezici zikagesi kungaholela ekusebenzeni kabi kwe-impedance.

6. Ukubekezelelana kwe-laminate egqoke ithusi kuzohlangabezana nezidingo ze-ipc4101 class B / L

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Strictly controlling the thickness of dielectric layer can reduce the deviation of expected value of electrical performance.

Ubungozi bokwenza lokho

Ukusebenza kukagesi kungahle kungazifezi izidingo ezibekiwe, futhi kuzoba nomehluko omkhulu ekuphumeni / ekusebenzeni kwenqwaba efanayo yezingxenye.

7. Chaza izinto zokumelana nesoder ukuqinisekisa ukuhambisana nezidingo ze-ipc-sm-840 class T

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Bona inki “enhle kakhulu”, qaphela ukuphepha kukayinki, futhi uqinisekise ukuthi i-solder imelana noyinki ihlangabezana nezindinganiso ze-UL.

Ubungozi bokwenza lokho

Ama-inki wekhwalithi empofu angadala ukunamathela, ukumelana nokugeleza nezinkinga zobulukhuni. Zonke lezi zinkinga zizoholela ekwehlukaneni kwe-solder resist kusuka ebhodini lesifunda futhi ekugcineni kuholele ekugqoleni kwesifunda sethusi. Izici ezingezinhle zokuhlukanisa zingadala amasekethe amafushane ngenxa yokuxhunywa / ukugoqwa kukagesi okungalindelekile.

8. Chaza ukubekezelelana kwezimo, izimbobo nezinye izinto ezenziwa ngomshini

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Ukulawulwa kokubekezelelana okuqinile kungathuthukisa ikhwalithi yobukhulu bemikhiqizo – kuthuthukise ukulingana, ukuma nokusebenza

Ubungozi bokwenza lokho

Izinkinga ngesikhathi somhlangano, njengokuqondanisa / ukulingana (inkinga yenaliti yokulingana yabezindaba izotholakala kuphela ngemuva kokuqedwa komhlangano). Ngaphezu kwalokho, kuzoba nezinkinga ekufakeni isisekelo ngenxa yokwanda kokuchezuka kobukhulu.

9. Kushiwo ubukhulu be-solder resist, yize kungacacisiwe ku-IPC

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Izakhiwo ezithuthukisiwe zokufakwa kukagesi zinciphisa ubungozi bokuxebuka noma ukulahleka kokunamathela futhi kuthuthukise ikhono lokumelana nomthelela womshini – lapho kwenzeka khona umthelela womshini!

Ubungozi bokwenza lokho

Isendlalelo sokumelana nomzimba omncane kungadala ukunamathela, ukumelana nokucindezela nezinkinga zobulukhuni. Zonke lezi zinkinga zizoholela ekwehlukaneni kwe-solder resist kusuka ebhodini lesifunda futhi ekugcineni kuholele ekugqoleni kwesifunda sethusi. Izici ezingezinhle zokwehlukanisa ngenxa yesendlalelo sokushisela esincane sokumelana kungadala ukujikeleza okufushane ngenxa yokuqhuba ngephutha / i-arc.

10. Izidingo zokubukeka nokulungisa ziyachazwa, yize zingachazwanga yi-IPC

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Enqubeni yokukhiqiza, ukunakekelwa nokunakekelwa ngokucophelela kudala ukuphepha.

Ubungozi bokwenza lokho

Imihuzuko ehlukahlukene, ukulimala okuncane, ukulungisa nokulungisa – amabhodi wesekethe ayasebenza kepha awabukeki emuhle. Ngaphezu kwezinkinga ezingabonakala phezulu, yiziphi izingozi ezingabonakali, umthelela emhlanganweni kanye nezingozi ekusetshenzisweni kwangempela?

11. Izidingo zokujula komgodi wepulagi

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Izimbobo ze-plug zekhwalithi ephezulu zizonciphisa ubungozi bokuhluleka ngesikhathi somhlangano.

Ubungozi bokwenza lokho

Izinsalela zamakhemikhali enqubeni yezimvula zegolide zingahlala emigodini enezimbobo zamapulaki ezinganele, okuholele ezinkingeni ezinjenge-weldability. Ngaphezu kwalokho, ubuhlalu bethini bungafihlwa emgodini. Ngesikhathi somhlangano noma ukusetshenziswa kwangempela, ubuhlalu bethini bungaphuma buze bube yisifunda esifushane.

12. UPeters sd2955 ucacisa uhlobo nemodeli yeglue eluhlaza okwesibhakabhaka

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Ukuqokwa kwe-glue eluhlaza okwesibhakabhaka kungagwema ukusetshenziswa kwemikhiqizo “yasendaweni” noma eshibhile.

Ubungozi bokwenza lokho

Iglu engaphucukile noma eshibhile engabhebheka ingabhampa, incibilike, iqhekeze noma isethwe njengokhonkolo ngesikhathi sokuhlangana, ukuze ingcina ekwazi ukuhlahlazeka ingakwazi ukukhunyulwa / ingasebenzi.

13. Yenza izinqubo ezithile zokuvunywa noku-oda nge-oda ngalinye lokuthenga

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Ukwenziwa kwale nqubo kuqinisekisa ukuthi yonke imininingwane iqinisekisiwe.

Ubungozi bokwenza lokho

Uma ukucaciswa komkhiqizo kungaqinisekisiwe ngokucophelela, ukuphambuka okuholelwayo kungatholakali kuze kube umhlangano noma umkhiqizo wokugcina, bese kwephuze kakhulu.

14. Amapuleti ashubile anezinyunithi ezilahliwe akamukelekile

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Ukungasebenzisi umhlangano oyingxenye kungasiza amakhasimende athuthukise ukusebenza kahle.

Ubungozi bokwenza lokho

Umbiko Test

Izinqubo ezikhethekile zomhlangano ziyadingeka kumabhodi ashubile anephutha. Uma ibhodi leyunithi elahliwe (i-x-out) lingamakiwe kahle noma lihlukanisiwe nebhodi eligcotshiwe, kungenzeka ukuhlanganisa leli bhodi elibi elaziwayo, ngaleyo ndlela kuchithe izingxenye nesikhathi.