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The ATF-54143 from Avago Technologies is a RF Transistor with Frequency 450 to 6000 MHz, Noise Figure 0.5 dB, Supply Voltage 3V, Current 60 mA. More details for ATF-54143 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.