I have been seeing some research papers that place TVS diodes across MOSFETs for transient suppression. However when looking at the data sheets they seem to have a maximum voltage rating of around 100V ("Vr"). But the data sheet also says they are used in automotive and other sensitive applications, where I expect voltages would be more than 100V.
They also say they have protection "IEC-61000-4-2 ESD 15kV(Air), 8kV (Contact)" ... so I am unsure if I am misunderstanding the data sheets - what exactly is the maximum voltage that can be placed upon these devices? Is it the VR or is it the 8/15kV that is stated? I have only a basic idea of how these devices work so I could be easily misunderstanding, but for normal diodes the VR is the max voltage rating.
Data sheet: https://www.littelfuse.com/products/tvs-diodes/automotive-and-high-reliability-tvs/smcg-hr.aspx
They also say they have protection "IEC-61000-4-2 ESD 15kV(Air), 8kV (Contact)" ... so I am unsure if I am misunderstanding the data sheets - what exactly is the maximum voltage that can be placed upon these devices? Is it the VR or is it the 8/15kV that is stated? I have only a basic idea of how these devices work so I could be easily misunderstanding, but for normal diodes the VR is the max voltage rating.
Data sheet: https://www.littelfuse.com/products/tvs-diodes/automotive-and-high-reliability-tvs/smcg-hr.aspx