Like I have explained for LEDs , all diodes have a 25 deg C rating around 1 watt-ohm using continuous current ratings for low or reasonable temp rise and rated ESR +\-50%
This pin diode is rated at 2Ω into a 50Ω with 0.5dB insertion loss at 0dBm
Thus with 10mA bias current it becomes a 2Ω ESR switch, which with 1.5A max rating for RF coupled into diode.
Since the semiconductor material used has a extremely low threshold voltage unlike LEDs, it can saturate much more current when forward biased.
Think of it as a current controlled low ESR switch with extreme low near zero threshold voltage and high speed, 6GHz useful for Rx/Tx switching at front end of a sat. phone.