Tepi yophimbaimagwiritsidwa ntchito makamaka mumakampani oyika zinthu zamagetsi. Imagwiritsidwa ntchito limodzi ndi tepi yonyamulira kunyamula ndikusunga zinthu zamagetsi monga zotsutsana, ma capacitor, ma transistors, ma diode, ndi zina zotero m'matumba a tepi yonyamulira.
Tepi yophimba nthawi zambiri imachokera ku filimu ya polyester kapena polypropylene, ndipo imaphatikizidwa kapena kuphimbidwa ndi zigawo zosiyanasiyana zogwirira ntchito (anti-static layer, adhesive layer, etc.). Ndipo imatsekedwa pamwamba pa thumba mu tepi yonyamulira kuti ipange malo otsekedwa, omwe amagwiritsidwa ntchito kuteteza zigawo zamagetsi ku kuipitsidwa ndi kuwonongeka panthawi yoyendera.
Pakuyika zida zamagetsi, tepi yophimba imachotsedwa, ndipo zida zoyikira zokha zimayika zidazo m'thumba kudzera m'bowo la tepi yonyamulira, kenako zimazitenga ndikuziyika pa bolodi lozungulira (PCB board) motsatizana.
Kugawa matepi ophimba
A) Malinga ndi m'lifupi mwa tepi yophimba
Kuti zigwirizane ndi m'lifupi mosiyanasiyana wa tepi yonyamulira, matepi ophimba amapangidwa m'lifupi mosiyanasiyana. M'lifupi mofala ndi 5.3 mm (5.4 mm), 9.3 mm, 13.3 mm, 21.3 mm, 25.5 mm, 37.5 mm, ndi zina zotero.
B) Ndi makhalidwe osindikiza
Malinga ndi makhalidwe a kugwirizana ndi kuchotsedwa kwa tepi yonyamulira, matepi ophimba akhoza kugawidwa m'mitundu itatu:tepi yophimba yomwe imayatsidwa ndi kutentha (HAA), tepi yophimba yomwe imayamwa mphamvu (PSA), ndi tepi yatsopano yophimba yomwe imayamwa mphamvu (UCT).
1. Tepi yophimba yomwe imayatsidwa ndi kutentha (HAA)
Kutseka tepi yophimba yomwe imayatsidwa ndi kutentha kumachitika chifukwa cha kutentha ndi kupanikizika kuchokera ku chipika chotseka cha makina otsekera. Pamene guluu wosungunuka wotentha umasungunuka pamwamba pa tepi yotsekera, tepi yophimba imapanikizidwa ndikutsekedwa ku tepi yonyamulira. Tepi yophimba yomwe imayatsidwa ndi kutentha ilibe kukhuthala kutentha kwa chipinda, koma imakhala yomata ikatenthedwa.
2. Guluu womvera kupanikizika (PSA)
Kutseka tepi yophimba yomwe imakhudzidwa ndi kupanikizika kumachitika ndi makina otsekera omwe amagwiritsa ntchito kupanikizika kosalekeza kudzera mu chozungulira cha kupanikizika, zomwe zimapangitsa kuti guluu wokhudzidwa ndi kupanikizika womwe uli pa tepi yophimbayo ugwirizane ndi tepi yonyamulira. Mbali ziwiri zomatira za tepi yophimba yomwe imakhudzidwa ndi kupanikizika zimakhala zomata kutentha kwa chipinda ndipo zingagwiritsidwe ntchito popanda kutentha.
3. Tepi Yatsopano Yophimba Zonse (UCT)
Mphamvu yoboola ya matepi ophimba omwe ali pamsika imadalira kwambiri mphamvu yoboola ya guluu. Komabe, guluu womwewo ukagwiritsidwa ntchito ndi zinthu zosiyanasiyana pamwamba pa tepi yonyamulira, mphamvu yoboola imasiyana. Mphamvu yoboola ya guluu imasiyananso malinga ndi kutentha kosiyanasiyana komanso nthawi yokalamba. Kuphatikiza apo, pakhoza kukhala kuipitsidwa kwa guluu wotsala panthawi yoboola.
Pofuna kuthetsa mavuto amenewa, mtundu watsopano wa tepi yophimba zinthu zonse wabweretsedwa pamsika. Mphamvu yochotsa zinthu sizidalira mphamvu yomatira ya guluu. M'malo mwake, pali mizere iwiri yozama yomwe imadulidwa pa filimu yoyambira ya tepi yophimba zinthu kudzera mu makina olondola.
Pochotsa tepi yophimba imang'ambika m'mipata, ndipo mphamvu yochotsa tepiyo siimakhudzana ndi mphamvu yomatira ya guluu, yomwe imakhudzidwa kokha ndi kuya kwa mipatayo ndi mphamvu ya makina a filimuyo, kuti zitsimikizire kuti mphamvu yochotsa tepiyo ndi yokhazikika. Kuphatikiza apo, chifukwa gawo lapakati la tepi yophimba ndi lomwe limachotsedwa pochotsa tepiyo, pomwe mbali zonse ziwiri za tepi yophimba zimakhalabe zomatira ku mzere wotsekera wa tepi yonyamulira, zimachepetsanso kuipitsidwa kwa guluu wotsalira ndi zinyalala ku zida ndi zigawo zake.
Nthawi yotumizira: Marichi-27-2024