PCB nau’in kariya

A cikin mafi sauƙi, ana iya bayyana riƙe PCB kamar haka:

An ƙera firam ɗin wayoyin hannu na PCB don abubuwan haɗin waje a wuraren da ba a kafa akan allon da’irar ba, inda alamun jan ƙarfe ko wasu abubuwan da ke cikin allon kewaye za su shiga ko ƙetare. Yankin na iya zama ko ya ƙunshi jan ƙarfe kuma yana iya zama kowane siffa.

A mafi yawan lokuta, ana amfani da wuraren riƙewa don kiyaye wasu wuraren allo nesa da sauran abubuwan don hana ko rage EMI. Koyaya, ana kuma amfani da su don ba da tazara don neman fitar da abubuwan da aka ɗora akan farfajiya. Misalai sune masu sarrafawa ko FPGas, waɗanda yawanci kimantawa da allon ci gaba na PCB ne. An jera wasu nau’ikan ajiyar wuri ɗaya a ƙasa.

Nau’in kariyar PCB

eriya

Wataƙila, mafi yawan nau’in ajiyar wuri shine a tanadi wani yanki na waya na jan ƙarfe a kusa da jirgi ko eriyar da aka haɗa don hana EMI shafar amincin amincin siginar da aka watsa ko karɓa. Ajiyar ajiya na iya ƙunsar siginar eriya zuwa wasu da’irori.

sassa

Hakanan ya zama gama gari don yin ɗaki don fan-outs kusa da abubuwan haɗin gwiwa (musamman radiators EM). Wannan gaskiya ne ga microprocessors, FPgas, AFE da sauran matsakaici zuwa babban adadin ƙididdigar fil (galibi ana amfani dashi don fakiti na faci).

Plate edge clearance area

Gyara gefen yana da matukar mahimmanci a masana’antu. Musamman, bangarori suna rarrabuwa cikin allon kowane mutum yayin taron PCB. Don yin wannan, dole ne a bar isasshen izini don wayoyi ko zira kwallo.

tracking

Wani lokaci yana iya zama da fa’ida don ayyana wuraren ajiyar wuri a kusa da alamomi. Wani lokaci ana amfani dashi don layin watsa shirye -shiryen ƙasa don cimma ƙarancin sarrafawa.

hakowa

Ana saka faranti da yawa ta hanyar sukurori ko kusoshi. A cikin waɗannan lokuta, yana da taimako a ayyana tazara tsakanin ramukan. Rashin isasshen tazara na iya shafar taro, katse aikin da’irar, har ma yana haifar da lalacewar hukumar kewaye. Don ramuka, yawanci kawai kuna bin ƙa’idodin DFM na CM.

mai haɗawa

Dangane da nau’in mai haɗawa dangane da shimfidawa da sanyawa, ƙirar allon ku na iya buƙatar yin la’akari da abubuwa biyu: sawun allon mai haɗawa da paneling. Yawancin lokaci, shimfidar mai haɗawa ko toshe ba ya haɗa da sarari don wayoyi na waje ko haɗin kebul. A cikin waɗannan lokuta, riƙe jihar yana da mahimmanci don tabbatar da cewa da’irar tana yin yadda ake tsammani.

canza

Wani amfani mai kyau na ajiyar wuri shine don samar da ɗaki don juyawa ko motsa juzu’in da aka ɗora a kwance.

Jerin da ke sama yana ba da wasu nau’ikan gama gari da amfani don riƙe PCB. A wasu lokuta, duk da haka, kuna iya buƙatar ayyana wuraren da aka keɓe. Misali, idan ƙirar ku tana amfani da abubuwan haɗin gwiwa; Misali, a cikin amplifiers na aiki, inda akwai babban rashin daidaituwa tsakanin shigarwa da fitarwa, da’irar na iya zama mai saukin kamuwa da raunin halin yanzu, don haka yana iya zama dole don samar da nau’in kariya ta gaba: zoben kariya na PCB. Kodayake ba a rarrabasu azaman yanki mai kariya ba, zoben kariya yana aiki azaman shinge na zahiri ga abubuwan waje da wayoyi, kuma yana hana halin yanzu daga barin yankin. Yanzu muna shirye don duba yadda za a tabbatar da cewa ajiyar ajiyar ta yi aikin su.

Ka nisanci matsala

Matakan riƙe PCB suna da tasiri ne kawai idan da gaske sun cimma burinsu. Wannan don samar da warewa a takamaiman yankunan hukumar daga duk wani abu na waje. Don cimma wannan, kuna buƙatar bin waɗannan kyawawan jagororin Keepout.

Ma’anar riƙewa ta PCB

Determine why retention is required

Determine how much space is needed according to usage

Use screen printing markers to identify reservation areas

Ensure that your design document contains retention information

Rike PCB abu ne mai mahimmanci ga ƙirar ku, yana tabbatar da cewa yana yin yadda ake tsammani. Ta bin waɗannan jagororin da cin cikakkiyar fa’ida daga gare su, zaku iya gujewa rikice -rikicen shimfidawa da inganta amincin PCBA bayan turawa.