MOS Transistor Selector Characteristics: ◆Test parameters and ranges: threshold voltage UGS(th): 0.1~9.9V; internal resistance RDS: 0.1~ 9.9Ω; transconductance gm: 0.30~5.00S; withstand voltage U(BR)DS: 50~650V ◆Freely setting limit of qualification judgement, automatically saving in case of any power cut, and alarming when measured value exceeds limit