HMC589 Obsolete
The HMC589ST89(E) is an InGaP HBT Gain Block MMIC SMT amplifier covering DC to 4 GHz and packaged in an industry standard SOT89. The amplifier can be used...
HMC589 on Analog.com

HMC589A Recommended for New Designs
The HMC589AST89E is an InGaP HBT Gain Block MMIC SMT amplifier covering DC to 4 GHz and packaged in an industry standard SOT89E. The amplifier can be used...
Datasheet
HMC589A on Analog.com