I-PCB (iBhodi yeSekethe eShicileleyo) idlala indima ebalulekileyo kubomi banamhlanje.Sisiseko kunye nohola wendlela yamacandelo e-elektroniki.Kulo mba, umgangatho wePCB ubalulekile.
Ukujonga umgangatho we-PCB, iimvavanyo ezininzi zokuthembeka kufuneka zenziwe.Le mihlathi ilandelayo yintshayelelo yovavanyo.
1. Uvavanyo longcoliseko lwe-Ionic
Injongo: Ukujonga inani leeyoni kumphezulu webhodi yesekethe ukujonga ukuba ucoceko lwebhodi yesekethe lufanelekile.
Indlela: Sebenzisa i-75% yepropanol ukucoca indawo yesampuli.I-Ions inokunyibilika kwipropanol, itshintshe i-conductivity yayo.Utshintsho kwi-conductivity lurekhodwa ukumisela i-ion concentration.
Umgangatho: ngaphantsi okanye ulingana no-6.45ug.NaCl/sq.in
2. Uvavanyo lokumelana neekhemikhali zemaski ye-solder
Injongo: Ukujonga ukuxhathisa kweekhemikhali kwimaski ye-solder
Indlela: Yongeza i-qs (i-quantum yanelisekile) i-dichloromethane eyehlayo kumphezulu wesampulu.
Emva kwexesha, sula i-dichloromethane ngekotoni emhlophe.
Jonga ukuze ubone ukuba umqhaphu unebala kwaye ukuba imaski ye-solder iyanyibilika.
Umgangatho: Akukho dayi okanye ukunyibilika.
3. Uvavanyo lobulukhuni bemaski ye-solder
Injongo: Jonga ubulukhuni bemaski ye-solder
Indlela: Beka ibhodi kwindawo ethe tyaba.
Sebenzisa ipeni yovavanyo oluqhelekileyo ukukrwela uluhlu lobulukhuni kwisikhephe de kungabikho mikrwelo.
Rekhoda obona bunzima buphantsi bepensile.
Umgangatho: Ubuncinci ubunzima kufuneka bube phezulu kune-6H.
4. Uvavanyo lwamandla okuhlubula
Injongo: Ukukhangela amandla anokuqhawula iingcingo zobhedu kwibhodi yesekethe
Izixhobo: I-Peel Strength Tester
Indlela: Hlubula ucingo lobhedu ubuncinane be-10mm ukusuka kwelinye icala le-substrate.
Beka ipleyiti yesampuli kwi-tester.
Sebenzisa amandla amileyo ukuhluba ucingo oluseleyo lobhedu.
Amandla okurekhoda.
Umgangatho: Amandla kufuneka adlule i-1.1N / mm.
5. Uvavanyo lwe-Solderability
Injongo: Ukukhangela ukuthengiswa kweepads kunye nemingxuma ebhodini.
Izixhobo: umatshini wokuthambisa, i-oveni kunye nexesha.
Indlela: Bhaka ibhodi kwi-oven kwi-105 ° C ngeyure eli-1.
Dip flux.Beka ibhodi ngokuqinileyo kumatshini we-solder kwi-235 ° C, kwaye uyikhuphe emva kwemizuzwana emi-3, ukhangele indawo ye-pad efakwe kwi-tin.Beka ibhodi ngokuthe nkqo kumatshini we-solder kwi-235 ° C, yikhuphe emva kwemizuzwana emi-3, kwaye ukhangele ukuba umngxuma onqumlayo ufakwe kwi-tin.
Umgangatho: Ipesenti yendawo kufuneka ibengaphezulu kwama-95. Yonke imingxunya kufuneka ifakwe etotini.
6. Uvavanyo lweHipot
Injongo: Ukuvavanya amandla ombane okumelana nebhodi yesekethe.
Isixhobo: Hipot tester
Indlela: Iisampuli ezicocekileyo nezomileyo.
Qhagamshela ibhodi kumvavanyi.
Yandisa i-voltage ukuya kwi-500V DC (ngokuthe ngqo) ngesantya esingekho phezulu kune-100V / s.
Yibambe kwi-500V DC imizuzwana engama-30.
Umgangatho: Akufuneki kubekho iimpazamo kwisekethe.
7. Uvavanyo lobushushu benguqu yeglasi
Injongo: Ukujonga ubushushu beglasi yokutshintsha kwepleyiti.
Izixhobo: DSC (Differential Scanning Calorimeter) tester, oven, dryer, electronic scales.
Indlela: Lungiselela isampuli, ubunzima bayo kufuneka bube yi-15-25mg.
Iisampuli zabhaka kwi-oven kwi-105 ° C kwiiyure ze-2, kwaye emva koko zipholile kwiqondo lokushisa lokushisa kwi-desiccator.
Beka isampuli kwisigaba sesampulu somhloli we-DSC, kwaye usethe izinga lokushisa kwi-20 °C / min.
Skena kabini kwaye urekhode Tg.
Umgangatho: Tg kufuneka ibengaphezulu kwe-150°C.
8. Uvavanyo lwe-CTE (i-coefficient yokwandiswa kwe-thermal).
Ithagethi: CTE yebhodi yovavanyo.
Izixhobo: TMA (uhlalutyo lwe-thermomechanical) umhloli, i-oven, isomisi.
Indlela: Lungiselela isampuli kunye nobukhulu be-6.35 * 6.35mm.
Iisampuli zabhaka kwi-oven kwi-105 ° C kwiiyure ze-2, kwaye emva koko zipholile kwiqondo lokushisa lokushisa kwi-desiccator.
Beka isampuli kwisigaba sesampula somhloli we-TMA, setha izinga lokushisa kwi-10 ° C / min, kwaye usethe ubushushu bokugqibela kwi-250 ° C.
Rekhoda ii-CTEs.
9. Uvavanyo lokumelana nobushushu
Injongo: Ukuvavanya ukumelana nobushushu kwebhodi.
Izixhobo: TMA (uhlalutyo lwe-thermomechanical) umhloli, i-oven, isomisi.
Indlela: Lungiselela isampuli kunye nobukhulu be-6.35 * 6.35mm.
Iisampuli zabhaka kwi-oven kwi-105 ° C kwiiyure ze-2, kwaye emva koko zipholile kwiqondo lokushisa lokushisa kwi-desiccator.
Beka isampuli kwisigaba sesampula somhloli we-TMA, kwaye usethe izinga lokushisa kwi-10 °C / min.
Ubushushu besampulu bunyuswe ukuya kuma-260°C.
Chengyuan Industry Professional Coating Machine Manufacturer
Ixesha lokuposa: Mar-27-2023