Tiny Low Noise Amplifier 10-4000MHz. Wide 3.6V-24V supply; reverse polarity protected

Regular price $39.00


This is an ultra low noise PSA4-5043+ RF amplifier that provides excellent gain and noise figure. The LNA can be used in a number of different receiver applications such as Ham Radio, TV reception, etc. The product is ideally suited as a pre-amplifier. The noise figure of this LNA is only 0.65 dB at 100 MHz. The LNA includes pads for external power and supports a very wide input voltage range of +3.6 VDC to +24 VDC. The device also has reverse polarity protection.

The data sheet for the PSA4-5043+ amplifier can be found on the Mini-Circuits website.



  • Wideband LNA operates from 10 MHz to 4 GHz
  • Wide Input voltage range +3.6 VDC to +24 VDC
  • Reverse polarity protected 
  • 0.65 dB Noise Figure at 100 MHz 
  • LED Power Indicator
  • SMA-F connectors


Frequency      Gain

10 MHz           18 dB

100 MHz          23 dB

1 GHz              18 dB

2 GHz              12 dB

3 GHz                8 dB

4 GHz                5 dB

Output IP3 

+32 dBm

Supply Voltage

+3.6 VDC to +24 VDC 

Maximum RF Input Power

+17 dBm

Noise Figure

0.65 dB @ 100 MHz