High Reliability Semiconductor Testers. Counterfeit Detection for Discrete Components. Lorlin measures screens grades, sorts, characterizes and classifies the critical parameters of semiconductors with repeatability and accuracy including Power FETs, MOSFETs, JFETs, IGBTs, Transistors, Diodes, Bridges, Zeners, Rectifiers, SCRs, rectifers, triacs, optos, Hybrids and most other small signal and power semiconductor components.