75 Ohm Fixed Attenuators

The name JFW has been synonymous with 75 Ohm fixed attenuators since our inception in 1979.  JFW has the capabilities to match custom dB values with a variety of RF connector combinations to make a fixed attenuator for your specific application.

An attenuator is used to decrease the power level of a RF signal. A fixed attenuator is an attenuator that has a single fixed dB value.  When purchasing a fixed attenuator you have to specify which dB value you require.  Use our selection chart to look up your required dB value.

All of our standard attenuator models do attenuate at DC. If you require the DC signal to be passed through the attenuator without being attenuated, then select a model in the table that is listed as DC Passing.

Please contact JFW for recommendations or use our Inquiry Form.

JFW Model #	Impedance	Frequency Range	RF Input Power	Attenuation Values	RF Connectors
75F-XXX BNC	75 Ohm	DC-500 MHz	1 Watt	1-30 dB	BNC
75F-XXX N	75 Ohm	DC-1000 MHz	1 Watt	1-20 dB	N
75F-XXX TNC	75 Ohm	DC-1000 MHz	1 Watt	1-20 dB	TNC
75F-XXX-S F	75 Ohm	DC-1000 MHz	1 Watt	1-40 dB	F screw-on
75FHC-XXX-10	75 Ohm	DC-3000 MHz	10 Watt	3-30 dB	BNC, N
75FP-XXX-2G	75 Ohm	DC-2000 MHz	1 Watt	1-20 dB	BNC, F, N, TNC
75FP-XXX-3G	75 Ohm	DC-3000 MHz	0.5 Watt	1-30 dB	BNC, F, N

DC Passing Attenuators

DC passing attenuators will pass the DC signal through the attenuator without being attenuated.  They only attenuate over the specified frequency band.

JFW Model #	Impedance	Frequency Start	Frequency Stop	RF Input Power	Attenuation Values	RF Connectors
75FFB-XXX	75 Ohm	950 MHz	2150 MHz	1 Watt DC Passing	3-20 dB	BNC, F
75FFD-XXX	75 Ohm	450 MHz	2000 MHz	1 Watt DC Passing	3-20 dB	BNC, F