Cov kev qhia tshwj xeeb rau cov khoom siv hluav taws xob semiconductor ua raws li cov lus qhia tsim los ntawm International Organization for Standardization (ISO), yog li ua kom muaj kev cuam tshuam thoob ntiaj teb. Qhov dav dav dav tshaj plaws suav nrog 8mm, 12mm, 16mm, 24mm, 32mm, 44mm, thiab 56mm, nrog rau qhov dav 12mm thiab 24mm yog siv dav tshaj plaws. Pocket pitch feem ntau ntsuas 2mm, 4mm, lossis 8mm, thaum lub hnab ntim qhov tob yog tsim los ua kom haum rau cov tuab tshwj xeeb ntawm cov khoom nqa. Cov cab kuj daim kab xev tuab feem ntau yog li ntawm 0.2mm txog 0.5mm, sib txawv raws li qhov hnyav thiab qhov ntev ntawm cov khoom nws txhawb.
EIA-481 tus qauv qhia txog qhov tseem ceeb ntawm qhov ntev thiab qhov yuav tsum tau ua siab ntev rau cov cab cab cab, suav nrog qhov tsis tseem ceeb xws li hnab tshos qhov tseeb qhov tseeb thiab qhov ntev ntawm qhov sprocket. JEDEC cov qauv, hloov pauv, tsim cov kab xev tshwj xeeb tshwj xeeb uas haum rau ntau hom pob khoom. Cov qauv tsim qauv no ua kom muaj kev sib haum xeeb ntawm cov cab kuj thiab cov cuab yeej siv tshuab nto-mount, yog li txhim kho kev tsim khoom. Tsis tas li ntawd, qhov ntsuas qhov ntsuas qhov ntsuas tau ua kom yooj yim ntawm kev tswj hwm tsev khaws khoom thiab kev lag luam logistics.
