how can I get leakage current in tlp?
The wavy VI curve is leakage but when Vmax is exceeded with sufficient time (ns) , then abrupt avalanche failure occurs followed by a short circuit with the max current dropping down vertically to 0V

These were tested with a fancy tester.
https://assets.thermofisher.com/TFS-Assets/CAD/Specification-Sheets/Celestron-Spec-Sheet-0215.pdf