Kev tsim hluav taws xob luam tawm cov phiaj xwm hluav taws xob (tom ntej no hu ua PCB) cov khoom lag luam tau siv ua lag luam txij li xyoo 1948 thiab tau pib tshwm thiab tau siv dav hauv xyoo 1950. Kev lag luam PCB ib txwm yog kev lag luam siv zog thiab nws qhov kev siv zog qis dua li ntawm kev lag luam semiconductor. Txij li thaum xyoo 2000s, kev lag luam semiconductor tau maj mam txav los ntawm Asmeskas thiab Nyij Pooj mus rau Taiwan thiab Tuam Tshoj. Txog tam sim no, Tuam Tshoj tau dhau los ua tus tsim khoom lag luam PCB hauv ntiaj teb, suav txog ntau dua 60% ntawm lub ntiaj teb cov PCB tsim tawm.

Cov cuab yeej siv kho mob:

Kev nce qib niaj hnub no hauv kev tshawb fawb txog kev kho mob yog tag nrho vim kev txhim kho kev lag luam hluav taws xob sai. Feem ntau cov cuab yeej siv kho mob (piv txwv li, ntsuas ntsuas pH, ntsuas lub plawv, ntsuas ntsuas kub, ELECTROcardiogram/EEG, MRI cov cuab yeej, X-duab hluav taws xob, CT ntsuas, ntsuas ntshav siab, ntsuas ntshav qabzib ntsuas cov cuab yeej, lub tshuab ua pa, khoom siv microbiological, thiab lwm yam) yog pcBS -based rau kev siv tus kheej. Cov PCBS no feem ntau yog qhov me me thiab muaj qhov sib luag me me. Kev ntsuas qhov ntom ntom txhais tau tias tso cov khoom SMT me dua hauv PCB qhov me me. Cov cuab yeej siv kho mob no me dua, nqa tau yooj yim, sib zog thiab ua haujlwm tau yooj yim dua.

Muaj khoom siv.

PCBS kuj tseem siv dav hauv kev tsim khoom, chaw tsim khoom thiab cov nroj tsuag uas nyob ib sab. These industries have high-power machinery driven by high-power working circuits that require large current. Txhawm rau ua qhov no, txheej txheej saum toj kawg nkaus ntawm PCB tau txheej nrog txheej tuab ntawm tooj liab, uas, tsis zoo li cov tshuab PCBS nyuaj, nqa tam sim no txog li 100 amperes. Qhov no yog qhov tseem ceeb tshwj xeeb hauv kev siv xws li arc vuam, cov neeg tsav tsheb loj servo, cov roj teeb ua kua qaub, cov khoom paj rwb tsis meej rau kev lag luam tub rog thiab khaub ncaws.

Qhov kaj

Hauv kev teeb pom kev zoo, lub ntiaj teb tab tom txav mus rau kev daws teeb meem zoo. These halogen bulbs are rare now, but now we see LED lights and high-intensity leds around. Cov leds me me no muab lub teeb ci ci siab thiab tau teeb tsa ntawm txhuas raws PCBS. Aluminium muaj cov cuab yeej nqus cua sov thiab ua kom nws tawm mus rau saum huab cua. Yog li ntawd, vim yog lub zog loj, cov txhuas txhuas PCBS no feem ntau siv hauv cov teeb hluav taws xob LED ntawm cov nruab nrab thiab lub zog muaj zog LED ua hluav taws xob.

Automotive thiab aerospace

Another application of PCBS is in the automotive and aerospace industries. Ib qho xwm txheej ib txwm nyob ntawm no yog kev rov qab los ntawm kev txav lub dav hlau lossis tsheb. Yog li, txhawm rau kom ua tiav cov kev ua kom muaj zog loj, PCB tau hloov pauv.

Yog li, siv PCB hu ua Flex PCB. PCB yooj ywm tuaj yeem tiv taus kev co siab thiab lub cev hnyav, yog li txo qhov hnyav tag nrho ntawm lub dav hlau. Cov PCBS hloov pauv tau no tseem tuaj yeem hloov kho hauv qhov chaw nqaim, uas tseem yog qhov txiaj ntsig zoo. Cov PCBS hloov pauv no ua cov khoom sib txuas, cuam tshuam, thiab tuaj yeem sib sau ua ke hauv qhov chaw me me, xws li tom qab vaj huam sib luag, hauv qab dashboards, thiab lwm yam. Kev sib xyaw ntawm PCBS nruj thiab hloov tau kuj tseem tuaj yeem siv tau (txhav-hloov pauv tau PCBS).

Los ntawm kev faib cov ntawv thov kev lag luam, cov neeg siv khoom siv hluav taws xob suav rau feem ntau tshaj plaws, nce txog 39%; Khoos phis tawj suav txog 22%; Kev sib txuas lus 14%; Industrial controls and medical equipment accounted for 14 per cent; Automotive electronics accounted for 6%. Kev tiv thaiv thiab kev ya dav hlau suav txog 5%, kev siv dav hlau thiab kho mob thiab lwm yam kev lag luam muaj qhov xav tau siab rau PCB raug.

PCB tau siv dav vim tias nws muaj ntau qhov tshwj xeeb zoo, uas tuaj yeem suav nrog raws li hauv qab no.

1. High-density.

Nrog kev txhim kho ntawm kev sib koom ua ke kev sib txuas thiab kev teeb tsa thev naus laus zis, PCBS qhov siab tuaj yeem tsim kho.

2. Kev ntseeg siab

Los ntawm kev tshuaj xyuas ib zaug, kev tshuaj ntsuam xyuas thiab kev laus, PCB tuaj yeem lav tau ua haujlwm tau zoo nyob ntev.

3. Tsim tau.

Rau txhua yam ntawm PCB kev ua tau zoo (hluav taws xob, lub cev, tshuaj lom neeg, khoom siv hluav taws xob, thiab lwm yam) qhov xav tau, tuaj yeem ua tus qauv dhau los ntawm kev tsim qauv, kev tsim qauv thiab lwm txoj hauv kev kom ua tiav lub rooj tsav xwm tsim lub sijhawm luv, ua haujlwm tau zoo.

4. Ua tau zoo.

Los ntawm kev tswj hwm niaj hnub, kev tsim qauv, ntsuas (kom muaj nuj nqis), kev siv tshuab thiab lwm yam khoom lag luam tuaj yeem ua tiav kom ntseeg tau tias ua tau zoo ntawm cov khoom lag luam.

Testability.

Ib txoj hauv kev sim ua tiav, cov qauv ntsuas, ntau yam cuab yeej ntsuas thiab ntsuas tau tsim los ntsuas thiab txheeb xyuas cov khoom PCB kom ua tau zoo thiab ua haujlwm tau zoo.

6. Kev sib sau ua ke.

Cov khoom lag luam PCB tsis tsuas yog pab txhawb cov txheej txheem sib dhos ntawm ntau yam khoom siv, tab sis kuj pab txhawb kev siv lub tshuab thiab ntau lawm.

Nyob rau tib lub sijhawm, PCBS thiab cov khoom sib dhos ntawm ntau yam tuaj yeem sib sau ua ntu loj, cov tshuab, lossis txawm tias tag nrho cov tshuab.

7. Kev tuav tswj.

Cov khoom lag luam PCB thiab cov khoom sib dhos ua ke tau ua tus qauv vim tias lawv tau tsim thiab tsim tawm raws li tus qauv ntsuas.

Txoj hauv kev no, thaum lub kaw lus ua tsis tiav, nws tuaj yeem hloov pauv sai, yooj yim thiab hloov pauv tau, thiab rov ua haujlwm sai ntawm kev pabcuam.