Pcb ibhodi prototype isigamu izimbobo ENIG surface TG150
Ukucaciswa komkhiqizo:
Izinto eziyisisekelo: | FR4 TG150 |
Ubukhulu be-PCB: | 1.6+/-10%mm |
Ukubalwa Kwesendlalelo: | 4L |
Ukuqina Kwethusi: | 1/1/1/1 oz |
Ukwelashwa kwendawo: | ENIG 2U” |
Imaski ye-solder: | Okuluhlaza okucwebezelayo |
Isikrini sikasilika: | Emhlophe |
Inqubo ekhethekile : | Izimbobo eziyingxenye ye-Pth emaphethelweni |
Isicelo
Inani le-TG libhekisela kuzinga lokushisa lokushintsha kwengilazi (Tg), okuyipharamitha ebalulekile yokuzinza okushisayo nokumelana nokushisa kwamabhodi e-PCB. Amabhodi e-PCB anamanani ahlukene e-TG anezakhiwo ezihlukene nezimo zohlelo lokusebenza. Nansi eminye yemibono evamile:
1. Ukuphakama kwevelu ye-Tg, kuba ngcono ukumelana nezinga lokushisa eliphezulu kwebhodi le-PCB, elifanele izimo zohlelo lokusebenza ezindaweni ezishisa kakhulu, ezifana nogesi wezimoto, ukulawulwa kwezimboni nezinye izinkambu.
2. Lapho inani le-Tg liphakeme, kuba ngcono izici zomshini zebhodi le-PCB, futhi izinkomba zamandla njengokugoba, ukuqina, nokugunda zingcono kunezo zebhodi le-PCB elinenani eliphansi le-Tg. Ifanele izinsimbi ezinembayo nemishini edinga ukuzinza okuphezulu.
3. Izindleko zamabhodi e-PCB anevelu ye-Tg ephansi ziphansi uma kuqhathaniswa, ezifanele ezinye izimo zohlelo lokusebenza ezinezidingo eziphansi zokusebenza kanye nokulawulwa kwezindleko okuqinile, okufana nogesi wabathengi. Kafushane, ukukhetha ibhodi le-PCB elifanele isimo sakho sohlelo lokusebenza kuzosiza ukuthuthukisa ikhwalithi yomkhiqizo nokuzinza futhi kunciphise izindleko zokukhiqiza.
4. Ibhodi lesifunda eliphrintiwe le-tg150 lisho ibhodi lesifunda elakhiwe ngebhodi le-tg150. I-TG ivamise ukusho izinga lokushisa lengilazi elishintshashintshayo, elisho ushintsho olungaguquguquki olungaguquki lwento e-amorphous ukusuka esimweni esiqinile “nesengilazi” ukuya esimweni senjoloba nesibukekayo lapho kufakwa amazinga okushisa angaphezulu kwalindelekile. Ngenkathi i-TG ivame ukufakazela ukuthi iphansi kunezinga lokushisa elincibilikayo lesimo se-crystalline esihambisanayo.
5. Izinga lokushisa elishintshashintshayo lengilazi livame ukuza njengento engashi, ehlanekezela/encibilika kumazinga okushisa athile. I-tg150 PCB iza njengempahla ye-TG emaphakathi ngoba iwela ngaphezu kobubanzi obungu-130 degrees Celsius ukuya ku-140 degrees Celsius kodwa ibe ngaphansi kuka-170 degree Celsius okulingana noma ngaphezulu. Sicela uqaphele ukuthi ukuphakama kwe-TG ye-substrate (imvamisa i-epoxy), kuyanda ukuzinza kwebhodi lesifunda eliphrintiwe.
Imibuzo Evame Ukubuzwa
Ukushisa okudingekayo kokuqina kwe-PREPREG kufanele kusetshenziswe ngaphandle kokudlula i-FR4 Tg ukuze kulondolozwe ukuzinza kwe-PCB. I-FR4 Tg ejwayelekile iphakathi kuka-130 – 140°C, i-Median Tg ingu-150 °C kanti i-Tg ephakeme ingaphezu kuka-170°C.
I-Standard Tg ihlala ngaphezu kuka-130℃ kuyilapho i-Tg iphezulu ngaphezu kuka-170℃ kanye ne-Tg emaphakathi ngaphezu kuka-150℃. Uma kukhulunywa ngezinto zama-PCB, kufanele kukhethwe i-Tg ephezulu, okufanele ibe phezulu kunokusebenza kwamanje kwezinga lokushisa.
I-tg150 PCB iza njengempahla ye-TG emaphakathi ngoba iwela ngaphezu kobubanzi obungu-130 degrees Celsius ukuya ku-140 degrees Celsius kodwa ibe ngaphansi kuka-170 degree Celsius okulingana noma ngaphezulu. Sicela uqaphele ukuthi ukuphakama kwe-TG ye-substrate (imvamisa i-epoxy), iphakamisa ukuzinza kwebhodi lesifunda eliphrintiwe.
Isici esikhulu sokucabangela ukuthi ukusetshenziswa kwe-150 noma 170 Tg PCB yizinga lokushisa elisebenzayo. Uma ingaphansi kuka-130C/140C, khona-ke okokusebenza kwe-Tg 150 kulungile ku-PCB yakho; kodwa uma izinga lokushisa lokusebenza lizungeze i-150C, kufanele ukhethe i-170 Tg.
I-Tg PCB ephezulu iqukethe isistimu ye-resin edizayinelwe ukuthi imelane nokusoda okungenamthofu futhi inike amandla amandla omshini aphezulu ezindaweni zokushisa ezinokhahlo, eziphakeme. I-resin ibhekisela kunoma iyiphi into ephilayo eqinile noma e-semisolid evame ukusetshenziswa kumapulasitiki, amavanisha, njll.