Uwukhetha njani uMphezulu wokuGqibela kuYilo lwePCB yakho
---IsiKhokelo seNgcali kwi-PCB Surface Finishes
Ⅰ Yintoni kwaye njani
ithunyelwe:NgoNovemba15, 2022
Iindidi: Iiblogi
Iithegi: pcb,pcba,indibano yepcb,umenzi we-pcb, ukwenziwa kwepcb
Xa kufikwa kumphezulu ogqityiweyo, kukho iindlela ezahlukeneyo onokukhetha kuzo, umz. HASL, OSP, ENIG, ENEPIG, Hard Gold, ISn, IAg, njl. Kwezinye iimeko, kunokuba lula ukwenza isigqibo, njengokudityaniswa komphetho kuya kunzima igolide;I-HASL okanye i-HASL-free ikhethwa ngokubekwa kwezixhobo ezinkulu ze-SMT.Nangona kunjalo, kunokuba luqili ukukhetha enye igqibezela kuwe iibhodi ze-HDI ezine-Ball Grid Arrays (BGAs) ukuba akukho minye imikhondo.Kukho izinto ezifana nohlahlo lwabiwo-mali lwale projekthi, iimfuno zokuthembeka okanye imiqobo yexesha lokusebenza kufuneka iqwalaselwe phantsi kweemeko ezithile.Uhlobo ngalunye lokugqitywa komphezulu lwe-PCB lunoncedo kunye nokubi, lunokubhida abaqulunqi be-PCB ukuba bagqibe ukuba yeyiphi efanelekileyo kwiibhodi zakho zePCB.Silapha ukukunceda ukuba uzibonele ngamava ethu eminyaka emininzi njengomvelisi.
1. Yintoni PCB umphezulu ukugqiba
Ukusebenzisa ukugqiba umphezulu (unyango lomphezulu / ukugquma komhlaba) lelinye lamanyathelo okugqibela okwenza iiPCB.Isiphelo somphezulu senza ujongano olubalulekileyo phakathi kwebhodi yePCB engenanto kunye namacandelo, esebenza ngeenjongo ezimbini ezibalulekileyo, ukubonelela ngomphezulu othengiswayo kwindibano yePCB kunye nokukhusela ubhedu obusele buveziwe kubandakanya umkhondo, iipads, imingxuma kunye neenqwelomoya zomhlaba ukusuka kwi-oxidation okanye ungcoliseko, ngelixa imaski ye-solder igubungela uninzi lweesekethe.
Imiphetho yale mihla yomphezulu ayinalothe, ngokuhambelana neMiqathango yoMnyino wezinto eziNcincisayo (i-RoHS) kunye neNkunkuma yoMbane kunye neZixhobo zoMbane (WEEE).Iinketho zangoku ze-PCB zokugqiba umphezulu ziquka:
- ● I-LF-HASL (iNqanaba lokuNganisa iSoda yoMoya oshushu yasimahla)
- ● I-OSP (i-Organic Solderability Preservatives)
- ● ENIG (Electroless Nickel Immersion Gold)
- ● ENEPIG (Electroless Nickel Electroless Palladium Immersion Gold)
- ● Electrolytic Nickel/Gold - Ni/Au (Hard/Soft Gold)
- ● Ukuntywiliselwa kwesilivere, IAg
- ●Itoti emhlophe okanye iTin yokuntywiliselwa, ISn
2. Ungakhetha njani ukugqiba komphezulu kwiPCB yakho
Uhlobo ngalunye lokugqitywa komphezulu lwe-PCB lunoncedo kunye nokubi, lunokubhida abaqulunqi be-PCB ukuba bagqibe ukuba yeyiphi efanelekileyo kwiibhodi zakho zePCB.Ukukhetha echanekileyo kuyilo lwakho kufuna ukuba uthathele ingqalelo izinto ezininzi njengoku kulandelayo.
- ★ Budge
- ★ Iibhodi zesekethe indawo yokugqibela yesicelo (umzekelo ubushushu, ukungcangcazela, iRF).
- ★ Iimfuno zoMceli sicelo ongahlawulelwayo, zilungele ukusingqongileyo.
- ★ Ukuthembeka okufunekayo kwibhodi yePCB.
- ★ Uhlobo lwezixhobo, ubuninzi okanye iimfuno zokudityaniswa umz. ukudibanisa ucinezelo, i-SMT, ukudityaniswa kweengcingo, ukudityaniswa komngxuma, njl.
- ★ Iimfuno zomgangatho othe tyaba we SMT pads ze BGA isicelo.
- ★ Iimfuno zobomi beShelf kunye nokusebenza kwakhona kokugqiba komphezulu.
- ★ Ukothuka / ukuchasana nokuwa.Umzekelo, i-ENIG ayifanelanga i-smart phone kuba i-smart phone ifuna iibhondi ze-tin-copper ukothuka okuphezulu kunye nokumelana nokulahla endaweni yeebhondi ze-nickel.
- ★ Ubungakanani kunye nesiphumo.Ngomthamo omkhulu wePCBs, inkonkxa yokuntywiliselwa inokuba lukhetho oluthembekileyo nolunexabiso elithe kratya kune-ENIG kunye neSilivere yokuntywila kunye nokungcolisa imiba yobuntununtunu inokuthintelwa.Ngokuchasene noko, isilivere yokuntywiliselwa ingcono kune-ISn kwibhetshi encinci.
- ★ Ukuba sesichengeni sokudleka okanye ukosulela.Umzekelo, ukuntywiliselwa ukugqiba kwesilivere kuthande ukukhasa.Zombini i-OSP kunye netoti yokuntywiliselwa zinovakalelo ekuphatheni umonakalo.
- ★ Ubuhle bebhodi, njl.
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Ixesha lokuposa: Nov-15-2022
