I have a simple LED circuit (2 strings of 2 LEDs each with a ballast R). Input to the circuit is from LED driver (60mA). There is no protection diode at the input/output due to load voltage requirements. LED reverse protection is provided through voltage divider as max reverse voltage is -12V. The LED has a max reverse voltage of -6V. If a cap is put from driver input to ground, will the circuit survive a -300V pulse lasting 0.05ms or is a reverse protection diode needed? Thanks for the help.