TS5828 mount for S500 with heat sink and 30 mm cooling fan.

The fact that VTX nowadays are getting smaller, it means there is less surface area to let the heat go and often cause overheat issues. This is especially the case with high power units like the Eachine TS5828 600mW. Why is overheat bad?
Your VTX can burn out during FPV flights and cause crashes
Running at this high temperature while in contact with other electronics in your aircraft could damage them.
It affects your range and transmitter efficiency as they depend on the working temperature