Ufakelo oluchanekileyo lwamacandelo endibano yomphezulu kwindawo emiselweyo ye-PCB yeyona njongo iphambili ye-SMT patch processing, kwinkqubo yokwenziwa kwepatch iya kubonakala ngokuqinisekileyo ezinye iingxaki zenkqubo ezichaphazela umgangatho wepatch, ezifana nokufuduswa kwamacandelo.
Ngokubanzi, ukuba kwinkqubo yokulungiswa kwe-patch, ukuba kukho utshintsho lwamacandelo, yingxaki efuna ukuqwalaselwa, kwaye ukubonakala kwayo kunokuthetha ukuba kukho ezinye iingxaki ezininzi kwinkqubo ye-welding.Ke yintoni isizathu sokufuduswa kwamacandelo ekusetyenzweni kwetshiphu?
Izizathu eziqhelekileyo zezizathu ezahlukeneyo zokutshintsha iphakheji
(1) Isantya somoya we-welding welding sikhulu kakhulu (ikakhulukazi senzeka kwiziko le-BTU, amacandelo amancinci naphezulu kulula ukuwatshintsha).
(2) Ukungcangcazela komzila kaloliwe wothutho, kunye nentshukumo yothutho lwesixhobo sokuxhomisa (amacandelo anzima)
(3) Uyilo lwephedi luyi-asymmetrical.
(4) Ukuphakanyiswa kwephedi yobungakanani obukhulu (SOT143).
5Ukunyamezela izinto ezinjalo, ezifana neeSIM khadi, iipads okanye steel mesh Windows kufuneka ibe ngaphantsi kobubanzi bepin yecandelo kunye ne-0.3mm.
(6) Imilinganiselo yeziphelo zombini zamacandelo yahlukile.
(7) Amandla angalinganiyo kumalungu, anje ngepakethe yokuchasa ukumanzisa, umngxuma wokumisa okanye ufakelo lwekhadi lokufakela.
(8) Ecaleni kwamacandelo athanda ukukhupha, njenge tantalum capacitors.
(9) Ngokuqhelekileyo, i-solder paste enomsebenzi onamandla akulula ukuyitshintsha.
(10)Nayiphi na into enokubangela ikhadi elimileyo liya kubangela ukufuduswa.
Thetha ngezizathu ezithile
Ngenxa ye-welding reflow, icandelo libonisa imeko edadayo.Ukuba indawo echanekileyo iyafuneka, lo msebenzi ulandelayo kufuneka wenziwe:
(1)Ushicilelo lwe-solder paste kufuneka luchaneke kwaye ubukhulu befestile yentsimbi yomnatha akufunekanga bube ngaphezu kwe-0.1mm ububanzi kunephini lecandelo.
(2) Yila ngokufanelekileyo ipad kunye nendawo yokufakela ukuze amacandelo alungelelaniswe ngokuzenzekelayo.
(1) Xa kuyilwa, umsantsa phakathi kwamalungu olwakhiwo kwaye kufuneka lwandiswe ngokufanelekileyo.
Okungasentla ngumba obangela ukususwa kwamalungu kuqhubekeko lwepetshi, kwaye ndiyathemba ukukunika ireferensi ethile ~
Ixesha lokuposa: Nov-24-2023