Sukhoi Su-30MKI

To add to this, let me say something which I admittedly don't know for a fact with regard to TRMs but from general knowledge regarding such parts as computer PSUs. Usage of GaN would have an effect on this, though I cannot be sure as to the extent & the specifics.

Besides what I've already stated in post #3257, there may be several reasons why you'd want to put TRMs rated for higher wattage on your radar, even if your cooling system is obviously not capable of dealing with a full array operating at peak transmitting power.

Take the example of a 20W-rated TRM. While 20W may be the peak transmitted power, the peak efficiency is likely to be achieved at somewhere between 50-80% of the rated power depending on component design. Efficiency meaning how much power you have to input in order to get a set output. Closer to the peak rating, the efficiency drops off drastically.

So getting a 20W TRM would be a good way to ensure that operation at somewhere around 10-15W is performed with superb efficienc
if we put full number of 3,665 T/R modules as @South block said, can these modules be wired to receive other modules signal like we use only 500 modules at a time to transmit and use full 3665 to receive?
for the next pulse use other set of 500 modules to transmit
like a time separation to limit power and heat.
also in emergency case we should be able to use all 3665 to transmit in a burst mode for few pulses to get max power.
how about using a RAT or pod to get more power
 
if we put full number of 3,665 T/R modules as @South block said,

Forget the 3665 number...it's not practically feasible. There's a reason why we limited the number at ~2500.

can these modules be wired to receive other modules signal like we use only 500 modules at a time to transmit and use full 3665 to receive?
for the next pulse use other set of 500 modules to transmit
like a time separation to limit power and heat.

Yes, all AESAs are capable of functioning like this.

also in emergency case we should be able to use all 3665 to transmit in a burst mode for few pulses to get max power.

I'm sure there is a set limit for how long the TRMs can function at peak output without damaging the cooling system. How many TRMs can be operated at peak power at the same time is not public knowledge.

how about using a RAT or pod to get more power

There are multiple ways of increasing input power, as long as your cooling system is capable of handling the increase in heat. If it's not, then there's no point in increasing input power.