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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.
450 Watt, 50 Volt, 3.1 to 3.5 GHz, GaN RF IMFET
15 Watt, 50 Volt, DC to 4 GHz, GaN RF Transistor
15W, 300 MHz to 1.215 GHz, GaN RF Input-Matched Transistor
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