How to obtain the chip area size of 200V series GaN devices

Designing with GaN FETs and ICs Modeling and Simulation
1

How to obtain the chip area size of 200V series GaN devices，I‘m tring to extract the relationship between specific ON-resistance R′ ds(Udc) and blocking voltage
image
.

2

Hello,
the die area of our devices is pretty straightforward to be obtained, since we either do not have a package (CSP = chip scal package products) or the die is exposed on top for the packaged parts. So, die size is reported in the machanical drawing.

Best regards