Ib tug tseem ceeb tivthaiv nyob rau hauv lub electronics kev lag luam yog hu ua luam Circuit Court board (PCB). Qhov no yog ib yam nkaus thiab yooj yim tivthaiv uas ua rau nws tsis yooj yim rau ntau tus neeg los piav txog saib tus PCB yog. Qhov tsab xov xwm no yuav piav nyob rau hauv kom meej cov qauv ntawm cov PCB thiab ib co ntawm cov nqe lus uas feem ntau siv rau hauv lub teb ntawm PCB.

Nyob rau hauv lub tom ntej no ob peb nplooj ntawv, peb yuav sib tham txog cov muaj pes tsawg leeg ntawm lub PCB, nrog rau tej terminology, ib tug nyuag los ua ke txoj kev, thiab ib qho taw qhia mus rau lub PCB tsim cov txheej txheem.

Yuav ua li cas yog ib tug PCB?

Sau Circuit Court board (PCB) yog ib qho ntawm feem ntau cov npe, thiab muaj peev xwm kuj yuav raug hu ua "sau xov boards" los yog "sau xov cards". Ua ntej lub PCB nyob, lub Circuit Court twb ua los ntawm point-to-point thaiv. Cov ntseeg ntawm cov qauv no yog heev tsawg, vim hais tias raws li cov Circuit Court muaj hnub nyoog, cov breakage ntawm txoj kab yuav ua ib qho qhib los yog luv luv Circuit Court ntawm txoj kab ntawm.

Winding tshuab yog ib tug loj nce qib nyob rau hauv Circuit Court technology tej lub durability thiab replaceability ntawm txoj kab los ntawm winding me me txoj kab uas hla ntawm tej ib ncig ntawm lub posts nyob rau ob leeg.

Raws li cov electronics kev lag luam tsiv los ntawm lub tshuab nqus tsev hlab thiab relays rau silicon semiconductors thiab kev circuits, qhov luaj li cas thiab tus nqi ntawm hluav taws xob Cheebtsam yog kuj koos. Hauv cov khoom muaj tshwm ntau thiab ntau nyob rau hauv tus neeg sector, prompting manufacturers mus nrhiav me me thiab ntau nqi-zoo dlaws. Yog li ntawd, cov PCB yug.

Muaj pes tsawg leeg

Cov PCB zoo li ib tug multi-layered ncuav mog qab zib los yog lasagna - ib tug txheej ntawm ntaub ntawv sib txawv nyob rau hauv lub ntau lawm, nias ua ke los ntawm tshav kub thiab nplaum.

FR4

Lub substrate ntawm lub PCB yog feem ntau iav fiber. Nyob rau hauv Feem ntau, lub fiberglass substrate ntawm ib tug PCB yog feem ntau xa mus rau raws li "FR4". Cov khoom cov ntaub ntawv uas "FR4" muab lub hardness thiab thickness ntawm lub PCB. Nyob rau hauv tas li ntawd mus rau lub FR4 substrate, muaj saj zawg zog Circuit Court laug cam ua rau saj zawg zog high-kub yas (polyimide los yog cov zoo li no) thiab cov zoo li.

Tej zaum koj yuav nrhiav tau PCBs ntawm txawv thicknesses; Txawm li cas los, lub thickness ntawm SparkFun cov khoom feem ntau yog 1.6mm (0.063 "). Muaj qee yam khoom kuj siv lwm yam thicknesses, xws li LilyPad thiab Arudino Pro Micro boards nrog ib tug tuab ntawm 0.8mm.

Pheej Yig PCBs thiab qhov daim hlau no yog ua los ntawm cov ntaub ntawv xws li epoxy los yog phenol, uas tsis muaj cov durability ntawm FR4, tab sis muaj ntau pheej yig dua. Thaum soldering yam li boards, koj yuav tsis hnov ​​tsw ib tug ntau ntawm tsw. Qhov no hom ntawm substrate yog feem ntau siv rau hauv heev low-end tej khoom noj khoom. Phenolic tshuaj muaj ib tug uas tsis muaj thermal decomposition kub, thiab qhov ntev vuam lub sij hawm ua decomposition thiab carbonization, thiab muab tawm ib unpleasant saj.

Cov nram qab no yog ib tug heev nyias tooj liab ci txheej uas yog nias rau hauv lub substrate los ntawm tshav kub thiab nplaum thaum lub sij hawm lawm. Nyob rau hauv ob npaug rau-mog board, cov tooj liab ci yog nias rau pem hauv ntej thiab rov qab sab ntawm lub substrate. Nyob rau hauv ib co uas tsis muaj nqi ntawv, tooj liab ci tsuas yog nias rau ib sab ntawm lub substrate. Thaum peb xa mus rau "double-vaj huam sib luag" los yog "ob-txheej board", nws txhais tau hais tias yog ob tug khaubncaws sab nraud povtseg ntawm tooj liab ci rau peb lasagna. Ntawm cov hoob kawm, nyob rau hauv sib txawv PCB designs, tus xov tooj ntawm tooj liab ci khaubncaws sab nraud povtseg tej zaum yuav raws li me me raws li ib tug txheej los yog ntau tshaj 16 khaubncaws sab nraud povtseg.

Lub thickness ntawm cov tooj liab txheej yog tus loj thiab yog ntsuas nyob rau hauv ceeb thawj. Nws yog feem ntau qhia los ntawm cov niaj hnub luj ntawm ib tug square taw ntawm tooj liab (oz). Feem ntau cov PCBs muaj ib tug tooj liab thickness ntawm 1 oz, tab sis ib txhia high-power PCBs yuav siv 2 oz los yog 3 oz ntawm tooj liab. Hloov ounces (oz) ib square taw, uas yog hais txog 35um los yog 1.4mil tooj liab.

Soldermask

Saum toj no cov tooj liab txheej yog ib tug solder daim npog qhov ncauj. Cov txheej no ua rau cov PCB saib ntsuab (los yog SparkFun tus liab). Lub solder daim npog qhov ncauj yog siv lub ib co kua nplaum rau ntawm cov tooj liab txheej los mus tiv thaiv ib co kua nplaum rau ntawm tus PCB tuaj mus rau hauv kev sib cuag nrog lwm co, solder los yog lwm yam conductive khoom. Qhov kuaj pom ntawm ib tug solder daim npog qhov ncauj tso cai rau koj mus solder nyob rau hauv txoj cai qhov chaw thiab tiv thaiv kom txhob solder choj.

Silkscreen

Saum toj no lub solder daim npog qhov ncauj, muaj yog ib tug dawb txhob lo lo ntxhuav kev tshuaj ntsuam txheej. Cov tsiaj ntawv, cov xov tooj, thiab cov cim no yeej luam tawm nyob rau silkscreen ntawm lub PCB los pab txhawb los ua ke thiab coj koj mus rau to taub zoo dua cov tsim ntawm lub Rooj Tswjhwm Saib. Peb feem ntau siv lub silkscreen cim rau qhia tias cov nuj nqi ntawm tej yam pins los yog LEDs.

Feem ntau xim ntawm cov txhob lo lo ntxhuav kev tshuaj ntsuam txheej yog dawb. Ib yam li ntawd, cov txhob lo lo ntxhuav kev tshuaj ntsuam txheej yuav ua rau yuav luag txhua xim. Dub, grey, liab thiab txawm daj txhob lo lo ntxhuav ntxaij vab tshaus yog tsis yooj yim dua. Txawm li cas los, nws yog tsis tshua muaj pom ib tug ntau yam ntawm silkscreen xim rau ib tug hluas board.

Nyob rau hauv kev, solder qhov ncauj qhov ntswg yog ntsuab, tab sis yuav luag tag nrho cov xim muaj peev xwm yuav siv tau rau solder masking.

terminology

Tam sim no uas koj paub cov qauv ntawm cov PCB, cia wb mus saib lub PCB txog terminology.

Qhov nplhaib - Ib tug tooj liab nplhaib rau ib tug metallized qhov nyob rau hauv lub PCB.

DRC - Tsim txoj cai checking. Ib tug kev pab cuam uas cov tshev mis yog hais tias tus tsim muaj uas tsis, xws li shorted ib co kua nplaum, ib yam nkaus thiab nyias ib co kua nplaum, los yog ib yam nkaus thiab qhov me me.

Laum Qhov Hit - Siv los qhia tias qhov hloov tus nqi ntawm qhov yuav tsum tau drilling txoj hauj lwm thiab lub sij drilling txoj hauj lwm nyob rau hauv lub tsim. Tsis yog drilling chaw zov me nyuam los ntawm blunt laum khoom yog ib qho teeb meem nyob rau hauv PCB raug.

(Kub) Ntiv tes - A liab qab hlau ncoo nyob rau sab ntawm lub Rooj Tswjhwm Saib uas yog feem ntau siv rau txuas ob boards. Xws li lub ntug ntawm lub computer expansion module, cov memory stick thiab cov laus kev ua si card.

Stamp Holes - Nyob rau hauv tas li ntawd mus V-Ntuag, muaj ib tug lwm txoj txoj kev ntawm lub rooj tsavxwm tsim. Los ntawm txoj kev tsis muaj zog sib koom ntawm ib co tas mus li qhov, nws yog ib qho yooj yim cais lub Rooj Tswjhwm Saib ntawm lub imposition.

Ncoo - Ib feem ntawm cov hlau raug nyob rau hauv qhov chaw ntawm lub PCB uas yog siv los solder lub ntaus ntawv.

Jigsaw - Ib tug loj board ua los ntawm ntau me me, loj tsawv boards. Suab Circuit Court board khoom siv feem ntau muaj teeb meem thaum ua me me boards, thiab combining ob peb me me boards yuav kom ntau lawm.

Stencil - Ib tug nyias hlau formwork (kuj muaj raws li yas) uas yog muab tso rau hauv PCB tso cai rau solder rau kis tau los ntawm tej qhov chaw thaum lub sij hawm los ua ke.

De-thiab-qhov chaw - Ib tug tshuab los yog txheej txheem uas muab Cheebtsam ntawm lub Rooj Tswjhwm Saib.

Dav hlau - Ib tug tas mus li daim tooj liab rau lub Rooj Tswjhwm Saib. Nws yog feem ntau txhais los ntawm ib thaj tsam, tsis yog paths. Tsis tas li ntawd lub npe hu ua "Tooj Tooj"

Metalized ntawm - Ib qhov nyob rau hauv lub PCB uas muaj lub qhov nplhaib thiab cov Plated qhov phab ntsa. Lub metallized ntawm tej zaum yuav kev twb kev txuas taw tes rau ib plug-nyob rau hauv, cov txheej ntawm lub teeb liab, los yog ib tug mounting qhov.

Lub plated qhov phab ntsa tso cai rau cov nyob ntawm tej rau ob tog ntawm lub PCB yuav tsum tau koom ua ke.

Reflow soldering - thaw cov tshuaj lo yog li ntawd lub pawm no ntau npau (SMD) thiab ntaus pins yog kev cob cog rua ua ke.

Silkscreen - cov tsiaj ntawv, cov xov tooj, cov cim, los yog graphics rau ib tug PCB. Yeej muaj no tsuas muaj ib xim rau txhua board thiab cov kev daws teeb meem yog kuj tsis tshua muaj.

Slotting - hais txog tej qhov nyob rau hauv lub PCB uas yog tsis yeej. Slotting yuav Electroplated los yog tsis. Txij li thaum slotting yuav tsum tau ntxiv tej lub sij hawm, nws tej zaum yuav tsub tus nqi ntawm lub Rooj Tswjhwm Saib.

Solder Paste Txheej - Ib tug txheej ntawm solder muab tshuaj txhuam ntawm ib tug tej tuab tsim nyob rau pawm no ntau npau ntawm tus nto mount ntaus ntawv los ntawm ib tug Stencil ua ntej ib tse nrog koj Cheebtsam ntawm lub PCB. Thaum lub sij hawm reflow txheej txheem, cov tshuaj lo muab tshuaj txhuam melts thiab tsim ib tug txhim khu kev qha hluav taws xob thiab cov neeg kho tshuab kev twb kev txuas ntawm lub ncoo thiab lub ntaus ntawv pins.

Soldering rauv - Ib cub tawg rau soldering inserts. Feem ntau, yog ib tug me me npaum li cas ntawm molten solder rau hauv, thiab lub Rooj Tswjhwm Saib sai sai dhau los ntawm, yog li ntawd lub raug pins yuav soldered.

Solder Daim npog qhov ncauj - Yuav kom tiv thaiv luv luv circuits, corrosion, thiab lwm yam teeb meem, cov tooj liab yog them nrog ib tug tiv thaiv zaj duab xis. Cov kev tiv thaiv zaj duab xis yog feem ntau ntsuab los yog tej zaum nws yuav lwm yam xim (SparkFun Liab, Arduino Blue, los yog kua dub). Feem ntau xa mus rau raws li "tsis kam soldering."

Lianxi - Lub ob kev cob cog rua pins ntawm tus dais no yog incorrectly kev cob cog rua ntawm ib tug me me nco solder.

Deg Mounting - Ib txoj kev los ua ke qhov twg tus ntaus ntawv tsuas xav tau kev pab yuav tsum tau muab tso rau hauv lub Rooj Tswjhwm Saib tsis muaj qhov yuav tsum tau rau txoj kev tus ntaus ntawv pins los ntawm lub vias rau lub Rooj Tswjhwm Saib.

Thermal ncoo - hais txog ib tug luv luv qhov cim tseg ntawm qhov kev twb kev txuas ntaub qhwv to rau lub dav hlau. Yog hais tias lub ncoo yog tsis zoo tsim rau thaum tshav kub kub dissipation, nws yog ib qhov nyuaj los ua cua sov rau ncoo mus rau ib tug txaus soldering kub thaum lub sij hawm soldering. Kev thermal ncoo tsim yuav ua lub ncoo ntau nplaum thiab reflow soldering lub sij hawm yog tus ntev.

Lw - Ib feem nruam txoj kev ntawm tooj liab rau lub Rooj Tswjhwm Saib.

V-tau - Ib tug tsis tiav txiav ntawm lub Rooj Tswjhwm Saib uas lov cov board los ntawm no kab.

Ntawm - Ib qhov nyob rau hauv lub Rooj Tswjhwm Saib uas yog feem ntau siv rau hloov Pib ntsais koj teeb los ntawm ib tug txheej mus rau lwm lub. Lub plug qhov hais txog lub dhau-qhov yuav tsum vov lub solder daim npog qhov ncauj kom tiv thaiv tau nws los ntawm raug soldered. Connector los yog ntaus ntawv pin ntawm, vim hais tias plugging yog tsis yuav tsum tau vim hais tias soldering yog yuav tsum tau.

Wave soldering - ib txoj kev soldering plug-nyob rau hauv pab kiag li lawm. Lub Rooj Tswjhwm Saib yog dhau ntawm qhov ceev los ntawm ib tug molten solder tshuab cua sov uas ua ib tug ruaj khov ncov, thiab cov tshuaj lo peaks solder lub ntaus ntawv pins thiab raug pawm no ntau npau ua ke.

YMS yog ib tug High-Tech PCB liab qab board kev pab cuam enterprise thoob ntiaj teb. Los ntawm ntau tshaj 10 xyoo 'dag zog, YMS tau tsim rau hauv ib tug High tech enterprise.

Nrog ib lub chaw cheeb tsam ntawm ntau tshaj li 10,000 tus square meters, nws muaj peev xwm yuav tsim dua 300,000 square meters hauv ib xyoos, uas nws PCB khoom li ntawm 2 mus rau 20 khaubncaws sab nraud povtseg, xws li 1Layer PCB , 2Layer PCB, Mutilayer PCB thiab lwm yam

Txais tos rau ceev tig PCB Tuam Tshoj.