Key Specifications. Design Continuously Variable Maximum Frequency 4 GHz Impedance 50 Ohm Power Maximum 5 Watt VSWR Maximum 1.5:1 Connector Series 1 SMA Connector Gender 1 Female Connector Series 2 SMA Connector Gender 2 Female Minimum Attenuation 0 dB Maximum Attenuation 5 dB. 0 to 5 dB Variable Attenuator, SMA Female to SMA Female Rated to 5 Watts from 2.5 GHz to 4 GHz. PE7431-5 is a variable attenuator from Pasternack. This SMA microwave attenuator is a continuously variable attenuator design. Our coaxial 50 Ohm adjustable attenuator is precision manufactured to RF and microwave industry specifications. The Pasternack variable RF attenuator has a female gender for connector 1 and a SMA female for connector 2. PE7431-5 variable attenuator has a minimum attenuation of 0 dB and a maximum attenuation of 5 dB. This microwave variable attenuator has frequency range of 2.5 GHz to 4 GHz and a maximum VSWR of 1.5:1. Our continuously variable attenuator is rated to 5 Watt at the stated attenuation. Our variable attenuator PE7431-5 is shipped same day as purchased from Pasternack's facility certified to ISO 9001:2015. This attenuator is part of over 40,000 RF, microwave and millimeter wave products that ship the same day worldwide, including custom cable assemblies.