Cov ntawv luam tawm hluav taws xob siv niaj hnub no thiab cov khoom siv hluav taws xob muaj ntau yam khoom siv hluav taws xob compactly mounted. Qhov no yog qhov tseem ceeb ntawm kev muaj tiag, vim tias cov khoom siv hluav taws xob ntawm cov ntawv luam tawm tau nce ntxiv, yog li qhov loj ntawm lub rooj tsav xwm Circuit Court. Txawm li cas los xij, extrusion luam tawm Circuit Board loj, BGA pob yog tam sim no siv.

Nov yog qhov tseem ceeb ntawm pob BGA uas koj yuav tsum paub txog qhov no. Yog li, saib cov ntaub ntawv hauv qab no:

1. BGA soldered pob nrog siab ceev

BGAs yog ib qho kev daws teeb meem zoo tshaj plaws rau cov teeb meem ntawm kev tsim cov pob me me rau kev sib xyaw ua ke zoo uas muaj ntau tus pins. Dual in-line nto mount thiab pin grid array tej pob khoom raug tsim los ntawm kev txo cov voids Ntau pua tus pins nrog qhov chaw nruab nrab ntawm cov pins.

Thaum qhov no yog siv los coj cov qib siab ceev, qhov no ua rau cov txheej txheem ntawm cov pins nyuaj los tswj. Qhov no yog vim qhov kev pheej hmoo ntawm kev sib tsoo ntawm lub taub hau-rau-header pins nce ntxiv vim qhov chaw ntawm tus pins txo qis. Txawm li cas los xij, BGA Soldering lub pob tuaj yeem daws qhov teeb meem no zoo dua.

2. Thaum tshav kub kub conduction

Ib qho txiaj ntsig zoo tshaj plaws ntawm BGA pob yog qhov txo qis thermal kuj ntawm PCB thiab pob. Qhov no tso cai rau cov cua sov tsim tawm hauv lub pob kom ntws zoo dua nrog rau kev sib xyaw ua ke. Ntxiv mus, nws tseem yuav tiv thaiv lub nti los ntawm overheating nyob rau hauv txoj kev zoo tshaj plaws.

3. Tsawg inductance

Zoo heev, luv luv hluav taws xob conductors txhais tau tias qis inductance. Inductance yog tus yam ntxwv uas tuaj yeem ua rau tsis xav hloov pauv ntawm cov teeb liab hauv kev kub ceev hluav taws xob. Txij li thaum BGA muaj qhov ncua deb ntawm PCB thiab pob, nws muaj cov hlau lead hauv qis, yuav muab kev ua tau zoo dua rau cov khoom siv pin.