Kev xaiv ntawmluam tawm cov boardCov ntaub ntawv txiav txim siab cov khoom lag luam. Shenzhen luam tawm hluav taws xob board cov tuam ntxhab cia siab rau ntawm lawv cov kev txawj nplua nuj thiab kev txawj ntse, txhawm rau kom sib ntsib ntau yam kev xav tau.
1, substrate cov khoom siv: tus tsim ntawm kev ua haujlwm theem pib
(1) Fr-4Substrate: Kev xaiv thoob ntiaj teb
Fr - 4 yog ib hom kev ua yeeb yam ib txwm ua los ntawm impregnating ntaub fiberglass nrog epoxy cob thiab kho nws ntawm qhov kub. Nws muaj cov rwb thaiv tsev zoo thiab muaj zog thev naus laus zis, muaj tus nqi nruab nrab, thiab yog siv dav hauv cov liaj teb ntawm cov neeg siv khoom hluav taws xob thiab kev tswj hwm. Nws dielectric tas li yog hais txog 4.0 {}}}}} 4.5, thiab qhov ploj yog tsawg, uas tuaj yeem ua tau raws li cov kev xav tau ntawm cov phiajcim teeb liab. Txawm li cas los xij, hauv cov xwm txheej siab thiab cov xwm txheej ceev, xws li 5g RF cov txiaj ntsig tau ua rau muaj kev ncua sij hawm qeeb tuaj yeem ua rau lawv muaj feem xyuam.
(2) Siab ntauThiab siab - ceev substrate: ib tug tho kev sib kis
Ntsib nrog qhov kev thov rau siab - zaus thiab siab} nrawm thiab siab} ceev} nrawm substrates xws li Rogers Ro4000 series. Cov khoom siv no muaj DK ntawm txog 3.0 {}}} 3.5 thiab ib qho qis qis, uas tuaj yeem txo cov cim kev sib kis qeeb thiab poob. Nyob rau hauv high - nrawm digital thiab rf circuits digital thiab kis tau zoo, ua kom tau zoo antenna kis thiab kev txais tos tus kav hlau txais khoom thiab kev txais tos tus kav hlau txais kev ua tau zoo. Txawm li cas los xij, nws tus nqi siab thiab me ntsis tsis muaj zog tshuab zog muaj zog xav tau kev lag luam-tawm hauv kev lag luam rhiab lossis muaj kev siv zog txhua yam.
(3) Hlau raws li cov txheej txheem: cov cuab yeej muaj zog rau cov khoom tsis txaus thiab lub zog nqa
Rau cov khoom siv nrog lub zog loj thiab muaj kub disspation yuav tsum muaj, xws li cov zog hluav taws xob, xws li cov hluav taws xob ua haujlwm (Txhuas raws li, tooj liab raws li qhov kev xaiv zoo tshaj plaws. Siv txhuas ua piv txwv, lub phaj aluminium yog them nrog cov txheej txheem hluav taws xob txheej, tuaj yeem txhawb nqa lub neej kub, thiab tseem tuaj yeem txhawb nqa siab {}} fais fab circuits. Tab sis nws yog qhov nyuaj rau cov txheej txheem, hnyav, thiab txwv hauv cov khoom siv portable.
2, tooj liab ntawv ci khoom: ib qho tseem ceeb ntawm cov condier
(1) Txheem tooj liab ntawv nyiaj: lub mainstay ntawm cov ntawv thov sib xyaw
Txheem tooj liab ntawv ci yog cov khoom tseem ceeb tau tshaj tawm Circuit Court Circuit Court Board Cegrees, nrog cov lus qhia xws li 1 ooj thiab 0.5 ooj. Hauv cov ntawv luam tawm hluav taws xob tsim qauv tsim qauv, nws tuaj yeem ua tau raws li qhov kev coj ua ntawm feem ntau cov voj voog, nrog kev ua haujlwm zoo thiab kev ua haujlwm zoo. Nyob rau hauv cov neeg siv khoom lag luam hluav taws xob luam cov khoom lag luam hluav taws xob, lub zog ruaj khov tuaj yeem ua tiav, thiab cov kev ncaj ncees thiab qhov tseeb ntawm Circuit Court tuaj yeem lav thaum ua tiav. Tab sis nrog kev kawm miniaturization thiab kev ua tau zoo ntawm cov khoom siv hluav taws xob, nws yuav tsis txaus thaum ntsib kev kub siab tam sim no lossis ultra {5} {{5} {{5} {{5} Cov voj voog zoo.
(2) ultra nyias tooj liab ntawv nyiaj: ib qho adapter rau cov voj voog zoo
Lub thickness ntawm ultra - rein nyias tooj liab ntawv ci tuaj yeem yog li 0.25 ooj lossis txawm yoog raws li cov qauv ntawm cov ntawv luam tawm. Lub luag haujlwm tseem ceeb hauvHDI printed Circuita BoardKev tsim kho yog kom ua tiav txoj kab nqaim dav thiab kev sib cuam tshuam ntawm kev sib cuam tshuam nrog kev sib cuam tshuam nrog kev cuam tshuam nrog kev cuam tshuam nrog kev cuam tshuam nrog kev cuam tshuam nrog kev cuam tshuam nrog kev cuam tshuam nrog kev cuam tshuam nrog kev cuam tshuam nrog kev cuam tshuam nrog kev cuam tshuam nrog kev cuam tshuam nrog hluav taws xob. Zoo li lub smartphone motherboard, nws tuaj yeem sib ntsib thaj chaw thiab kev ua tau zoo. Txawm li cas los xij, nws lub zog zog yog tsis muaj zog, thiab kev ceev faj yuav tsum tau coj los ua kom tiv thaiv kev puas tsuaj rau lub voj voog.
3, cov khoom siv kho kom zoo: lav ntawm weldability thiab kev tiv thaiv
(1) Tshuaj Nickel Kub Plating (ENIG): Xaiv Zoo Saib Xyuas Cov Kev Ua Haujlwm
Cov elec elec electroless npib kub plating cov txheej txheem ib qho npib tsib xee kub kub txheej ntawm cov npoo ntawm cov ntawv luam tawm. Lub npib tsib xee muab cov tiaj nciab thiab tawv tawv, txhim kho kev coj tawm thiab corrosion tsis kam thiab ua rau lub hauv paus rau cov nplaum ntawm cov txheej kub. Txheej kub tau zoo weldability thiab oxidation tiv thaiv, kom tiv thaiv cov hluav taws xob sib xyaw ntawm cov hluav taws xob soldering, tiv thaiv cov oxidation thiab corrosion thiab kev tswj hwm kev sib txuas hluav taws xob. Commonly used in products such as computer motherboards and high-end communication equipment that require high soldering and stability. Tab sis tus nqi yog qhov siab thiab muaj ib qho "dub disk" teeb meem, xav tau kev tswj hwm nruj nruj ntawm cov txheej txheem thiab kev sim.
(2) organic soldability tiv thaiv tus neeg sawv cev (wm): Ntsuas kev tiv thaiv ib puag ncig thiab tus nqi
Wm yog ib puag ncig phooj ywg thiab qis - tus nqi kho deg. It forms an organic protective film on the surface of the printed circuit board, which protects the copper foil from oxidation during storage and assembly, and decomposes during soldering to facilitate soldering. Haum rau nqi cov khoom rhiab uas tsis yog kev sib tw soldering, xws li qee tus neeg siv khoom lag luam hluav taws xob luam tawm. Txawm li cas los xij, cov yeeb yaj kiab nyias muaj kev tiv thaiv tsis muaj zog thiab siv tau oxidation thaum muaj kev kub ntxhov thiab av noo. Nws muaj sijhawm luv luv thiab xav tau welded thiab sib sau ua ke raws sijhawm.