Test Accessories

  • Adapters

    Adapters (13)

    Coaxial RF adapters by JFW Industries, Inc.Adapters

    The RF adapter models listed below are 50 Ohm impedance coaxial RF adapters.  Whether you are working at a RF test bench or building a RF sub system, JFW has RF adapters for your application. RF Adapter Options:
    • Knurled models for test bench
    • Panel mount models available
    • 3 GHz, 6 GHz, 18 GHz ranges
    • Nickel or Gold Plating available
    • Brass or Stainless Steel bodies available
    • Reverse polarity available
    For your specific application, please contact JFW or use our Inquiry Form. [lt id="60"]
  • Bias Taps

    Bias Taps (13)

    Bias taps by JFW Industries, Inc.Bias Taps

    Bias taps (aka Bias tees) have been a staple product in JFW's line of quality RF test accessories for over 25 years.  They can be used to inject a DC Voltage onto a RF signal.
    • 50 Ohm and 75 Ohm Bias Taps
    • Low insertion loss
    • DC current handling up to 5 Amps
    • DC Voltage capacity up to 200 Volts
    • Any RF connector combination (BNC, SMA, N, TNC, 7/16)
    For specific applications, email JFW for assistance or use our Inquiry Form. [lt id="76"]
  • DC Blocks

    DC Blocks (12)

    DC Blocks by JFW Industries, Inc.DC Blocks

    DC blocks have been a staple product in JFW's line of quality RF test accessories for over 30 years.  These models block DC signals and pass RF signals with minimum loss.

    DC Block Options

    • 50 Ohm or 75 Ohm impedance
    • Multiple RF connectors available (BNC, SMA, N, TNC, 7/16, F, reverse polarity and more)
    • Breakdown Voltages up to 200 Vdc
    • Frequencies up to 50 GHz
    For your specific DC block application, please contact JFW for assistance or use our Inquiry Form.to send your exact specifications. [lt id="74"]
  • DC Cables

    DC Cables (6)

    DC Cable assemblies by JFW Industries, Inc. DC Cables

    JFW offers a line of DC cable assemblies.  These 4 pin, 9 pin, and 10 pin cable assemblies can be used to interface with many of JFW's programmable attenuators and RF switches.  If you have any questions about interfacing to a JFW RF component, please email our engineering department directly. For your specific application, please email JFW for assistance or use our Inquiry Form. [lt id="45"]
  • Feedthru Terminations

    Feedthru Terminations (4)

    50 Ohm feedthru termination with BNC male/female connectorsFeedthru Terminations

    The JFW feedthru termination has been a trusted component in RF laboratories for decades.  A feedthru termination is used to connect a low impedance coaxial RF cable to the high impedance inputs of test instruments (i.e. oscilloscope) and maintain proper impedance loading of the RF cable.  Use a 50 Ohm feedthru termination with 50 Ohm RF cables.  Use a 75 Ohm feedthru terminations with 75 Ohm RF cables. Please contact JFW for assistance or use our Inquiry Form. [lt id="73"]
  • Impedance Matching Pads

    Impedance Matching Pads (3)

    Impedance matching pad BNC male to F femaleImpedance Matching Pads

    JFW's online Impedance matching pad models are listed in the table below.  An impedance matching pad is designed using internal resistors configured to properly impedance match each side to a difference impedance.  The matching pad models listed below match a 50 Ohm impedance system to a 75 Ohm impedance system.  Resistive matching pads are wide-band devices that operate down to DC.  For 50 Ohm to 75 Ohm impedance matching, the internal resistors do create 5.7dB of attenuation loss.  If your impedance matching application must have minimum loss (i.e. < 1dB), then we recommend our impedance matching transformers instead.

    Impedance Matching Pad Options

    • Any RF connector combination (BNC, SMA, N, TNC, 7/16, F, reverse polarity, with bead-chains and more)
    • Any impedance matched (50 Ohm, 75 Ohm, 93 Ohm, 110 Ohm, 600 Ohm and many more)
    • Affordable custom models available upon request
    Frequently Asked Questions For your specific application, please contact JFW for assistance or use our Inquiry Form. [lt id="72"]
  • Impedance Matching Transformers

    Impedance Matching Transformers (8)

    Impedance matching transformer with BNC male/female RF connectorsImpedance Matching Transformers

    JFW's online impedance matching transformer models are listed in the table below.  An impedance matching transformer is a low loss device used to match two systems that have different impedance.  The models below are used to match a 50 Ohm system to a 75 Ohm system.  These models are bandwidth limited due to the internal reactive transformer designs.

    Impedance Matching Transformer Options

    • Any RF connector combination (BNC, SMA, N, TNC, 7/16, F, reverse polarity, with bead-chains and more)
    • Any impedance matched (50 Ohm, 75 Ohm, 93 Ohm, 100 Ohm, 125 Ohm and many more)
    • Affordable custom models available upon request
    Frequently Asked Questions For your specific application, please contact JFW for assistance or use our Inquiry Form. [lt id="70"]
  • RF Cables

    RF Cables (6)

    RF Cables by JFW Industries, Inc.RF Cables

    JFW offers a line of semi-rigid coaxial RF cable assemblies.  Contact the factory for additional connector combinations.
    • RG-402 type semi-rigid RF cable
    • RF cable assemblies are fully tested from DC to 6 GHz
    • RF cable assemblies available with any combination of SMA or N connectors
    • Choose any cable length you require
    • Cable lengths are specified in inches
    Click the column headers to sort our online models. For your specific application, please email JFW for assistance or use our Inquiry Form. [lt id="46"]
  • RF Couplers

    RF Couplers (12)

    RF CouplersResistive Coupler with 50 Ohm N female

    Couplers can be used to monitor a RF signal while adding very little insertion loss to the RF path.  JFW offers resistive couplers and directional couplers.  Resistive couplers are wideband, operate at DC and couple in both directions.  Directional couplers work over a defined frequency band and couple the RF signal in only one direction.  For your specific application, please contact JFW or use our Inquiry Form.

    Directional Couplers

    • Reactive design
    • Couples in only one direction
    • Provides isolation from reverse RF signals to coupled port
    • Functions at specified frequency band (not at DC)
    [lt id="129"]

    Resistive Couplers

    • Resistive design
    • Couples in both directions
    • Functions for both DC and RF signals
    [lt id="75"]
  • RF Detectors

    RF Detectors (5)

    JFW RF Detector Output Voltage

    RF Detectors

    JFW's online RF detector models are listed in the table below.  Our RF detectors use a circuit with a zero-biased Schottky detector diode to convert the RF input signal into a DC output signal.  As the amount of RF input power varies so does the DC output signal level. RF detectors are typically used for RF detection on a RF path.  Insert a directional coupler into the RF path with the RF detector on the coupled port.  The coupled RF signal will be converted to a DC signal by the RF detector.  The DC signal can then be used by a microprocessor to determine whether RF is present on the RF path based on the amplitude of the DC signal level.
    • RF Detectors available with positive or negative DC outputs
    • 50 Ohm and 75 Ohm impedance models available
    • Various connector combinations available (i.e. N/SMA, SMA/BNC)
    For your specific application, please contact JFW for assistance or use our Inquiry Form. [lt id="69"]
  • RF Fuse Holders

    RF Fuse Holders (2)

    RF Fuse Holder with 50 Ohm BNC male to BNC female connectorsRF Fuse Holders

    RF fuse holders are designed to protect costly RF components and systems.  These models are available with several different fusing levels (1/16A up to 1.0A).  The fuses are field replaceable.  The fuses are rated for 4 hours @ 100% current rating and 1 second maximum @ 200% current rating. For your specific application, please contact JFW for assistance or use our Inquiry Form. [lt id="68"] Fuse Rating at 100% rated current: 4 hours minimum Fuse Rating at 200% rated current: 1/16 A fuse  @ 0.015 seconds typical 1/8 A fuse  @ 0.04 seconds typical 1/4 A fuse  @ 0.1 seconds typical 3/8 A fuse  @ 0.1 seconds typical 1/2 A fuse  @ 0.1 seconds typical 3/4 A fuse  @ 0.1 seconds typical 1.0 A fuse  @ 0.1 seconds typical