Ngā Whakamahi Tuatahi o te Pūngao Uapu i roto i te Hanganga Ipurangi

Nga tono matua o te whakauru pai i te whakawhitiwhiti takea PCB

Te Whakapai Atu i ngā Hanganga (SMT) Ki runga i te Rā

He tūranga nui te pāhū whakapiri i te whakauru o ngā kōmponeta matua. Ko ia he mīhini whakapiri e noho ai ngā kōmponeta, ā, e whakamana ana i ngā hononga rīpea i te wā o te whakapiri. Ko te whakamahi i te pāhū whakapiri i roto i te SMT he painga nui, e āwhina ana ki te iti i ngā wā o te whakariterite, me te whakatipu hoki i ngā mahi, inā ka nui rawa te hiranga o ngā take whakauru, kei reira te tino hiranga o te tūpato kōmponeta. Nā ngā tatauranga o te whenua, ko te whakamahi i te pāhū whakapiri pai rawa e iti haere ana i ngā āhuatanga hereke, e whai take anō hoki i ngā taea kē. Ko te rangahau e tohua ana he 50% rānui te itinga o ngā āhuatanga hereke i te whakamahi i ngā pāhū whakapiri pai hanga, he whakaaro nui tēnei mo te whakatatū me ngā paihikara pai.

Te Whakapiri BGA me QFN Pakeke

Te whakauru pūtahi ki ngā tawhiti kōwhiri (BGAs) me ngā Quad Flat No-leads (QFNs) he hiahia nui ki te tino matatika, e mahi nei i te tāuru o te pūtahi whakauru hei mahi mīharo. Ko te pūtahi whakauru i tae noa atu, ka tiakina ngā hononga kino, ko te wehewehe i te take moe—a he take āniwaniwa mo enei momo kawe. Ki te whakapai i te wehenga o ngā hononga, ka whakamahi i ngā momo hangarau pūnaha, pērā i te aromatawai pūtahi whakauru me ngā porihinga whakawehewehe whakauru. He tohu ngā tikanga pai a te whenua, ko te whakamahi pai o te pūtahi whakauru ka whakapai i ngā paunga kua whiwhi, ka whakaaturia e ngā raraunga whakamātau; he whakapai nui i ngā tuhituhi o ngā hononga, ka riro mai ngā paanga wehewehe ki te takitoru 10% i te whakautu i ngā ture whakauru matatika.

Ngā Whakaaetanga me ngā Whakahoki Rautaki

Kei roto i te ao o te whakapuaki tēmama, e mōhio ana te pūngao whakapā ki te whai wāhi hei āwhina i ngā whakamatautau āwhiria o ngā huringa rīpoata. Kia whakatūria ai ngā wā kaweake, kei reira i whakaae ai ngā whakangungu me te whakarite anō i ngā huringa kua taea. Ahakoa, kei roto i ngā mahi whakahoki, e āwhina ana te pūngao whakapā i te whakatika matihiko me te whakahoki ano i ngā hanganga i te wā o te whakaora rānei, te whakamahi anō rānei. Kei whakapae ngā tohunga o te ao nei ko te pūngao whakapā he mea nui i enei tuhinga nā tana mohiotanga me tana tirotiro whenua. Hei tauira, ka taea e ana whakamahi i roto i te whakapuaki tēmama te iti iho i ngā wā o te kaupapa e 30%, whakamana i te urunga pai ki roto i ngā taiao mahi haere tonu.

Pūngao Whakapā i roto i ngā Raraunga me ngā Rīpoata LED

Whakahaere i te Hanganga Miniti Pūngao LED

Ko te pūhoro whakapā kēmu he mea nui i te hanganga o ngā tae mōhiti LED, whakamana ana i te hīnati ā-wāhi me te hīnati ā-hiko. E hango ana ngā tae mōhiti i enei rā kia noho kaha te pūkengenga a te pūhoro whakapā kēmu, me te āhuatanga pai ki te whakawhiti wāhi, e hiahiatia nei hei whakaiti i te wāhi i roto i ngā LED. Ko tēnei ka whakapai i te roa o ngā LED, ahakoa ko te whakahaere pai o te wāhi te mea e āheinga ki te paetanga o te mārama me te hīnati ā-enereti. Kei te whai take anō te whakaaro i te kāwanatanga o ngā LED i runga i te tonu whakamua o te tono mo ngā whakamahi whare, porihitanga, me ngā whakamahi īhātahi. Kia whai take tonu enei whakamātau i te hiahia mō ngā whakarau pai pūhoro whakapā kēmu e āhei ana ki ngā hiahia ā-mutunga o te hanga LED, pērā i te iti iho i ngā hapa me te pai ake i te whakapono katoa.

Whakauru Pūhiko Hiko

Kei roto i te hākinakina pūraha, he mea nui te hunga pūhoro mō te whakariterite i ngā mōhiohio pūraha, kei runga i tērā te whakaū whakapono i ngā wā e hihiko ana. Me tutuki ki te hunga pūhoro ēnei take pūnaha, inaianei ko te kaiwhakahaere ā-wero pai, hei whakamahere i te tirotiro hoki o te hā ki te waho, me te iti i te uiui i te hapa pūraha. Ki te whakatangitangi i te roanga o ngā mōhiohio pūraha, ka tautoko te hunga pūhoro i te rauora me te whakaū o ngā mōhiohio pūraha. Nā ngā raraunga whakamahi, ka taea te whakatīngae pai o te hunga pūhoro ki te whakatīngae i te roanga o ngā pūraha, me te iti i te hiahia mō ngā whakahoutanga anō, me te whakapai hoki i ngā whenua katoa o ēnei rākau.

Ngā Whakaritenga Pūhoro Pūhoro Mō te Hanganga Pūraha

Te Hunga Pūhoro Sn60Pb40 Mō Te Wāhanga Hei Tioriori Mō ngā PCB SMD

Kua whakatūhia te pēpeke Sn60Pb40 mo ngā tono mahi e hiahia ana ki te whakaiti i ngā wāhi wehe ā-wera. Kua hangaia tēnei toiora iti-ā-wera hei tiaki i te mana o ngā kōmponenti whawhai ki te wera, me te whakaiti i te paku o te mate wera. Ki te whakaiti i te whakapakari o te wera, ka tautoko ia i te whakawehi tōnui me te roanga o ngā huinga matihiko. Kua tohua e ngā rorohiko ka taea te whakapai i ngā mahi māroki, inā kē he whare taonga ki te paunga i ngā wāhi wehe ā-wera, e noho nei i ngā rīpoata. Ko tēnei kei te whakaatu he tino whanonga pai te pēpeke Sn60Pb40 mo ngā manene matihiko e hiahia ana ki te whakapai i te tahuhu i waenganui i te mahi māroki me te haumaru.

Wera iti Tītoko Tin lead Tītoko Pēke Sn60Pb40 mō PCB SMD

Ki te whakauru i tētahi whakariterite matua o 60% uku me 40% pirima, ka whakaiti te pēpeke Sn60Pb40 i ngā wāhi wehe o te pēpeke. He pai ki ngā wā e hiahia ana ki te whakaiti i ngā take wera, ka tiakina e ia te tūmanako o ngā rīpoata matihiko, ēngari i runga anake i ngā PCB ngaro me ngā whakauru pūkaha.

Sn55Pb45 Toiora mo ngā Papanui LED

Ko te whakahaere ā-wāhi me te pūnaha rīpeka e taea ana te mōhiohio pai o te kaiwhakapu Sn55Pb45, nā tēnei ka hua he taumata ki te whakamahi i a ia hei whiriwhiringa mo ngā papa hapori LED. Kia whakapuia ai te wāhi me te āhuatanga rīpeka, ko tēnei mahi tino pai hei tiaki i ngā haurongo me te roa o ngā LED. Heoi, ko ngā herenga me te whakahaere ā-wāhi o te kaiwhakapu Sn55Pb45 he momo whakarite tino whakamahia, e hiahiatia ana ngā take nei hei whakatika i ngā mahi whakapu. Ko te whakaaro mō te whakamahi o te kaiwhakapu Sn55Pb45 kei roto i te ao LED, he mea nui tērā ki te tiaki i te haumanu ā-wāhi, ā, e tutuki ana i ngā take rīpeka, e whakaatu ana ngā whakamārama ā-matua me ngā raraunga kāwanatanga i tana whakamahi nui i ngā matihiko LED o nāianei.

Sn55pb45 Tin Lead mō Pcb Led LED Strip Mānawa 500g Tītoko Pēke

Hei whakawhanake i te 55% pūoro me te 45% pūoro, ka taea e te poraka whakapu Sn55Pb45 te whakahaere pai o te wāhi mō ngā whakapuakitanga LED. Ko ōna hononga pūnaha tino whakatōpū hei tiaki i te whakapono, he mea nui ki te tiaki i te kawe mārama me te tono ēneiti ki ngā rauemi LED me ngā papa.

Whakatipu i te Pānga Whakapu ki te Aroturuki Pai

Te Kaitohu Hōia Tika mō te Whakapāpaki

Ko te whiriwhiri i te hōia tika tūtika hei whakatipu i ngā pūmau whakapāpaki, nā tēnei e whakatūhia ana te whakarite i runga i te pūhanga whakapāpaki. Ko te hōia he kaiwhakahoki karu e tango ana i ngā raraunga oksida me te whakapai i ngā āhuatanga whakamahana, e whakaaroaro ana ki te tohu whakapāpaki. He iti whenua ngā momo hōia whakapāpaki, ina: hōia rosin-tūtohu, hōia wai-tukutuku, me te hōia kāore-kīwai. E tika ana ina ia momo ki ngā tūranga īmene. Hei tauira, ko te hōia rosin e pai ana mō ngā kaupapa īmene e kore e hiahia ana ki te whanaketanga tuatahi, nō reira ko te hōia wai-tukutuku e whakanui ana ki ngā hiahia whakamahana. Ko ngā paerewa whakahaere i roto i ngā marae āhua, pēnei i ēnei mai i te IPC (Tauwhiro Kaupapa me ngā Pūnaha Rorohiko), ka tautoko i te whakamātau hōia i runga i te tūranga hei whakatūhia i ngā mahi whakapāpaki tūtika me te pai o te taonga matua.

Ngā Whakaaro mō te Pūhanga Kupuware me te Pūhanga Kaiwhakapūmau

Te whakamahere i te huringa mai i te pūhoro whatu whati ki te pūhoro whatu kore-a-lead kei te whakaatu i ngā hanga whaimana me ngā tūmomo taiao. Ko ngā pūhoro kore-a-lead, e āhei ana ki te whai i te whakaaetanga o ngā ture taiao pēnei i te RoHS (Restriction of Hazardous Substances), ka whakaaro he pai ki te whai ake i te whaihere i ngā tikanga taiao mō te hanga rorohiko. Ko ngā matatika whakatau e whakaatu ana ko te mea nui, ahakoa kua tēnā ngā tohu kore-a-lead kia hirikiri ngā wāhi whakawhitinga anō, ka mahi pai tonu rātou i runga i ngā tūranga whakamātau, whakatatū i te whanaketanga me te wharauranga. Ko ngā ture whakahaere, pēnei i te RoHS, e whakaputa ana i te whakamahi i ngā tahuhu kore-a-lead, e whakahīkari ana i ngā whiringa pūhoro kia tae atu ki ngā whakaaetanga me ngā paerewa mahi.

Ngā Tautoko Matihiko me ngā Tūtohetanga Tika

Te whakamana pai o te rohe me te tūtohu o te pāpate uku he mea nui mō te whakarite i ana hiranga me te roa o tana whakahaere. Me whakaaetia te pāpate uku i roto i tētahi taiao whakaputau, ingoa atu i waenganui i te 0-10°C, kia kaua e puta mai te tahuri rānei me te whakarerekē i te wā. He mea nui kia whakarereke te pāpate uku ki te wāhi maru o te whare i mua i te whakamahi, hei tiaki i ngā take e pā ana ki te kohu. Nga tikanga pai mō te tūtohu ka whakaae ki te wā o te noho, kia whakatipu nga kaiwhakahoki i muri i te whakamahi, me te tiaki i te āhua o te uru whenua i te wā o te whakamahi. Ka tuku ngā kaiwhakawehewehe tonu ētahi arataki mō ēnei tikanga, ka taea ai te tiaki i ngā āhuatanga rheological o te pāpate uku me te whakamahere i tētahi mahi uku kore-kaweake.