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The IA5 from Microsemi is a RF Transistor with Frequency 1000 MHz, Gain 9 dB, Power 0.5 W, Input Power 0.08 W, Supply Voltage 20 V. More details for IA5 can be seen below.
1805 to 1880 MHz, 89 W Airfast RF Power LDMOS Transistor
4500 to 5900 MHz GaN HEMT for C-Band Radar Systems
GaN HEMT Transistor 1.2 to 1.4 GHz
You can now find similar products from multiple companies on everything RF.