Description
Hewlett-Packard’s AT-42000 is a general purpose NPN bipolar transistor chip that offers excellent high frequency performance. The 4 micron emitter-to-emitter pitch enables this transistor to be used in many different functions. The 20 emitter finger interdigitated geometry yields a medium sized transistor with impedances that are easy to match for low noise and medium power applications.
   
Features
• High Output Power:
    21.0 dBm Typical P1 dB at 2.0␣ GHz
    20.5 dBm Typical P1 dB at 4.0␣ GHz
• High Gain at 1 dB
    Compression:
    15.0 dB Typical G1 dB at 2.0␣ GHz
    10.0 dB Typical G1 dB at 4.0␣ GHz
• Low Noise Figure: 1.9 dB
    Typical NFO at 2.0 GHz
• High Gain-Bandwidth
    Product: 9.0 GHz Typical fT