20.500.12556/DKUM-60292 REŠITVE V PROIZVODNJI VARISTORJEV V OHIŠJU SMD PRODUCTION SOLUTIONS OF THE ENCAPSULATED SMD VARISTOR Varistor je pasivna elektronska komponenta z izrazito nelinearno karakteristiko U-I. V družbi Keko - Varicon ga izdelujemo na osnovi cinkovega oksida s tehnologijo suhega stiskanja in tehnologijo nalivanja. Rezultat tehnologije suhega stiskanja je disk varistor, ki ga poleg ožičevanja vgrajujemo (inkapsuliramo) v plastično SMD-ohišje. Družino teh varistorjev imenujemo PV-serija. Tok puščanja Idc je eden izmed ključnih parametrov, ki vpliva na življenjsko dobo varistorja in izgube v vezju. Po vgradnji s t. i. reflow spajkanjem se še poveča. Ena izmed možnosti odprave tega fenomena je pasiviranje robov varistorja s stekleno frito. Rešitev je zahtevala izdelavo stroja, ki omogoča nanos, pasiviranje robov, iskanje pravega profila žganja frite in vpeljavo tehnologije v proizvodnjo. Varistor is a passive electronic component with highly nonlinear U - I characteristics. Keko - Varicons' product is ceramic varistor based on zinc oxide by dry pressing technology and the technology of casting and printing. The result of dry pressing technology is disc varistor (singlelayer). Disk varistors can be wired (trough hole component) or encapsulated in a plastic SMD housing. Family of incapsulated varistors are called PV series. Leakage current IDC is varistors one of the key parameter, which affects the lifetime of the varistor and losses in the circuit. After reflow soldering leakage current is even higher. One of the possible solutions for eliminate this phenomena is glass pasivation. The solution required facility development, finding the right temperature profile and implementation in to the production line. varistor steklena pasivacija proizvodnja SMD varistor glass passivation manufacturing SMD true true false M. Majcen Slovenski jezik Angleški jezik Diplomsko delo 2016-06-13 17:38:42 2016-07-05 08:20:00 2022-06-23 03:09:56 2019-07-11 11:41:40 2016 0 [Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.316.938(043.2) 19815702 URN:SI:UM:DK:LTVBRKSR UN_Majcen_Marko_2016.pdf UN_Majcen_Marko_2016.pdf 1 B71509F4371C8258016E286D04BFF0A0 52e6f4976169aaca0bc22203f8b6eab3aa7f67ddab952d5c83b428c5b72e3ca8 b127c46c-7c0c-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=94376 Fakulteta za elektrotehniko, računalništvo in informatiko 0 0 0