About PIN switch
I want use SMT PIN diode to buildup a RF switch. But I am not sure how many RF power it can hold. I hope it can hole 10W. The PIN diode is SMP1321. Can anyone tell me! Thanks.
For a PIN diode switch small and large-signal simulation, use the link below. You can download a trial copy at http://www.pedasoft.com/
http://www.pedasoft.com/PedaSoftEMS.pdf
RF PIN Switch and Power Amplifier Simulation
It would be pretty unlikely to be able to handle 10 watts. The package style is the problem. Those package types have very poor thermal resistance. So when you try to pass 10 watts thru the chip, some of the microwave energy is dissipated in the diodes series resistance. That heat makes the junction temperature rise. When the junction temperature gets above 150 deg C, the silicon and metal start to melt/diffuse, and you quickly have a failed diode.
Other than that, the chip you mentioned would be able to handle the 10 watts. It has a 100V breakdown, and less than 1 ohm series resistance at 100 mA bias.
Try to find a similar chip in a package with a good heat sink stud right on the bottom of it.
Rich