Raws li cov cuab yeej tiv thaiv, TVS cov raj tuaj yeem tiv thaiv electrostatic tawg thiab tiv thaiv circuits.Thaum xaiv TVS cov raj, yuav tsum tau them nyiaj mloog rau lawv cov kev tsis sib xws, txwv tsis pub muaj teeb meem tshwm sim.VRWM, VBR, Vc, Ipp, Cd yog qhov tseem ceeb rau ESD / TVS ntaus ntawv xaiv
Kev piav qhia:
VBR: Lub ntsiab lus uas lub cev qhuav dej @ IT - TVS tam sim ntawd ua rau qis impedance
VRWM: Tswj voltage - TVS nyob rau hauv lub xeev uas tsis yog-conductive nyob rau theem no
VC: Clamping voltage @ Ipp - Clamping voltage yog kwv yees li 1.3 * VBR
VF: Forward conduction voltage @ IF - Forward voltage poob
ID: Reverse Leakage Current @ VRWM
IT: Ntsuas tam sim no rau kev sib tsoo voltage
IPP: Qhov siab tshaj plaws tam sim no
IF: Forward conduction tam sim no
Thaum lub pulse ncov tam sim no IPP nrog lub sij hawm ntawm 20mS ntws los ntawm TVS, lub mem tes voltage yog clamped los ntawm ESD tiv thaiv ntaus ntawv, thiab lub siab tshaj plaws voltage uas tshwm sim ntawm ob kawg yog VC.VC thiab IPP qhia txog qhov muaj peev xwm tiv thaiv tau ntawm TVS.(Nco tseg: VC yog qhov hluav taws xob muab los ntawm diode hauv lub xeev txiav tawm, uas yog, qhov hluav taws xob los ntawm TVS thaum ESD impulse xeev.Nws tsis tuaj yeem siab dua qhov tso cai txwv qhov hluav taws xob ntawm cov hluav taws xob tiv thaiv, txwv tsis pub lub cuab yeej ntsib qhov kev pheej hmoo ntawm kev puas tsuaj.).
Maximum Reverse Leakage Current @ VRWM
VRWM qhia tias nyob rau hauv tus ID teev, tus nqi hluav taws xob ntawm ob qho kawg ntawm TVS ntaus ntawv dhau los ua qhov siab tshaj plaws rov qab ua haujlwm voltage.VRWM = (0.8 ~ 0.9) VBR.Ntawm qhov hluav taws xob no, kev siv hluav taws xob ntawm lub cuab yeej yog me me heev.(Ceeb Toom: Thaum xaiv hom, Vrwm yuav tsum tsis txhob qis dua qhov ua haujlwm voltage ntawm cov cuab yeej tiv thaiv lossis Circuit Court. Feem ntau, VopONUCov khoom siv feem ntau yog 12V, thiab TVS raj feem ntau xaiv los tswj VC ntawm 14V thiab 16V.
Qhov hluav taws xob uas TVS transistor dhau qhov kev ntsuas tam sim no Nws, uas yog lub cim hluav taws xob uas qhia txog kev coj ua ntawm TVS transistor, piv txwv li, los ntawm qhov no, lub cuab yeej nkag mus rau qhov tawg tawg.VBR yog qhov tsawg kawg nkaus tawg voltage rau TVS, thiab ntawm 25 ℃, TVS yuav tsis muaj avalanches hauv qab no voltage.Thaum TVS ntws los ntawm 1mA tam sim no (IR), qhov hluav taws xob siv rau ob tug ncej ntawm TVS yog nws qhov tsawg kawg nkaus tawg voltage VBR.Yuav kom ua tau raws li tus qauv thoob ntiaj teb ntawm IEC61000-4-2, TVS diodes yuav tsum muaj peev xwm tswj tau qhov tsawg kawg nkaus ntawm 8kV (hu rau) thiab 15kV (cua) ESD cuam tshuam.Qee cov tuam txhab lag luam semiconductor tau siv cov qauv kev tiv thaiv siab dua ntawm lawv cov khoom.Rau qee qhov kev siv khoom siv portable nrog cov kev cai tshwj xeeb, cov neeg tsim qauv tuaj yeem xaiv cov khoom siv raws li lawv xav tau.
Cov saum toj no yog cov ntsiab lus luv luv ntawm Cov Txheej Txheem Tseem Ceeb ntawm Kev Xaiv TVS, uas tuaj yeem siv los ua ib qho kev siv.Peb lub tuam txhab muaj ib pab neeg ua haujlwm muaj zog thiab tuaj yeem muab cov kev pabcuam tshaj lij rau cov neeg siv khoom.Tam sim no, peb lub tuam txhab muaj ntau yam khoom: ntseonu, kev sib txuas lus kho qhov muag module, optical fiber module, sfp optical module, olt khoom, Ethernet hloov thiab lwm yam khoom siv network.Yog tias koj xav tau, koj tuaj yeem nkag siab lawv hauv qhov tob.