Njengesixhobo sokukhusela, iibhubhu zeTVS zinokuthintela ngokufanelekileyo ukuphuka kwe-electrostatic kunye nokukhusela iisekethe. Xa ukhetha iibhubhu zeTVS, ingqwalasela kufuneka ihlawulwe kwiiparameters zabo ezifanelekileyo, ngaphandle koko iingxaki ezingalindelekanga zingenzeka. I-VRWM, i-VBR, i-Vc, i-Ipp, i-Cd yimilinganiselo ebalulekileyo yokukhethwa kwesixhobo se-ESD/TVS
Ingcaciso:
I-VBR: Indawo apho i-voltage yokuwa @ IT-TVS ngokukhawuleza iba yi-impedance ephantsi
I-VRWM: Gcina i-voltage - i-TVS ikwimeko engaqhubiyo kweli nqanaba
I-VC: I-Clamping voltage @ Ipp - I-voltage yokulinganisa imalunga ne-1.3 * VBR
VF: Phambili conduction voltage @ IF - Ukuhla kwamandla ombane Phambili
Isazisi: Buyisa ukuvuza kwangoku @ VRWM
IT: Uvavanyo lwangoku lombane wokuwa
IPP: Incopho yokuqhuma yangoku
UKUBA: Ukuqhubela phambili komqhubi wangoku
Xa i-IPP yangoku ye-pulse kunye nobude be-20mS ihamba nge-TVS, i-voltage ye-pulse igxininiswe ngesixhobo sokukhusela i-ESD, kwaye i-voltage ephezulu ye-peak eyenzeka kuzo zombini iziphelo yi-VC. I-VC kunye ne-IPP ibonisa amandla okunciphisa ukunyuka kwe-TVS. (Qaphela: I-VC yi-voltage enikezelwa yi-diode kwimeko yokunqunyulwa, oko kukuthi, i-voltage nge-TVS ngexesha le-ESD impulse state. Ayinakuba mkhulu kunomlinganiselo ovumelekileyo wombane wesekethe ekhuselweyo, ngaphandle koko isixhobo sijongene nomngcipheko womonakalo.).
Ukuvuza okukhulu okuBuyisa uReverse kwangoku @ VRWM
I-VRWM ibonisa ukuba phantsi kwe-ID echaziweyo, ixabiso lombane kwiziphelo zombini zesixhobo se-TVS liba ngowona mbane uphezulu wokusebenza umva. Ngesiqhelo VRWM=(0.8~0.9) VBR. Kulo mbane, ukusetyenziswa kwamandla kwesixhobo kuncinci kakhulu. (Qaphela: Xa ukhetha uhlobo, iVrwm akufuneki ibe ngaphantsi kombane oqhelekileyo osebenzayo wesixhobo esikhuselweyo okanye isekethe. Ngokubanzi, iVopI-ONUizixhobo zidla ngokuba yi-12V, kwaye ityhubhu ye-TVS ikhethwa ngokubanzi ukulawula i-VC phakathi kwe-14V kunye ne-16V.
I-voltage apho i-transistor ye-TVS idlula khona uvavanyo oluchaziweyo lwangoku Yona, i-voltage ephawulweyo ebonisa ukuqhutyelwa kwe-TVS transistor, oko kukuthi, ukusuka kweli nqanaba, isixhobo singena kwi-avalanche breakdown. I-VBR ngowona mbane usezantsi wokuqhekeka kwe-TVS, kwaye kwi-25 ℃, i-TVS ayizukufumana ama-avalanche angaphantsi kwalo mbane. Xa i-TVS ihamba nge-1mA yangoku echaziweyo (IR), amandla ombane asetyenziswa kwiipali ezimbini ze-TVS bubuncinane bamandla ombane wokuqhawula i-VBR. Ukuze kuhlangatyezwane nomgangatho wamazwe ngamazwe we-IEC61000-4-2, ii-TVS diode kufuneka zikwazi ukusingatha ubuncinci be-8kV (uqhagamshelwano) kunye ne-15kV (umoya) iimpembelelo ze-ESD. Abanye abavelisi be-semiconductor basebenzise imigangatho ephezulu yokuchasa kwiimveliso zabo. Kusetyenziso lwesixhobo esiphathwayo esineemfuno ezizodwa, abaqulunqi banokukhetha izixhobo ngokweemfuno zabo.
Oku ngasentla kushwankathelo olufutshane lweeParamitha eziBalulekileyo zoKhetho lweTVS, enokusetyenziswa njengesalathiso. Inkampani yethu ineqela lobugcisa elomeleleyo kwaye inokubonelela ngeenkonzo zobugcisa kubathengi. Okwangoku, inkampani yethu ineemveliso ezahlukeneyo: ezikrelekrelewena, imodyuli yonxibelelwano yamehlo, imodyuli yefiber ebonakalayo, imodyuli ye-sfp optical,oltizixhobo, Ethernettshintshakunye nezinye izixhobo zenethiwekhi. Ukuba ufuna, unokuwaqonda nzulu.