Non-Magnetic Variable Inductors

Knowles Johanson Manufacturing's non-magnetic variable inductors combine small size with high-performance

Image of Knowles Johanson's Non-Magnetic Variable InductorsKnowles Johanson Manufacturing's non-magnetic variable inductors combine small size and high performance with non-magnetic properties. Inductors and variable inductors are necessary elements of many RF products. They are used for matching and loading low noise amplifiers, power amplifiers, and mixers, as well as for providing frequency in selective resonant circuits in variable frequency oscillators.

The overall height of only 9 mm (0.35 in.) in SMD, vertical SMD, and through-hole versions make these inductors ideal for applications consistent with MRI/NMR systems, radios and jammers, power amplifiers, radar, avionics instrumentation, and test equipment applications where higher power handling and high-Q values are essential.

The coils and PTFE cores have a patented, precision-machined design to guarantee a constant winding pitch and consistent relationship to the printed circuit board. Tuning is done by means of threaded PTFE and non-magnetic copper alloy core. They have superb shock, vibration, and thermal tolerances and operate over the temperature band -40°C to +85°C. Catalog parts have nominal values of 33 nH to 118 nH, 2 to 7 turns with Q as high as 121 @ 100 MHz, SRF 0.7 GHz to 1.2 GHz with customized versions available for non-cataloged values. All parts are RoHS compliant.

Applications
  • MRI/NMR systems
  • Radios and jammers
  • Power amplifiers
  • Radar
  • Avionics instrumentation and test equipment

Non-Magnetic Variable Inductors

ImageManufacturer Part NumberDescriptionToleranceMounting TypeAvailable QuantityView Details
ADJUSTABLE INDUCTOR 30NH SMDJLC02E030TRSMADJUSTABLE INDUCTOR 30NH SMD-Surface Mount77 - ImmediateView Details
ADJUSTABLE INDUCTOR 48NH SMDJLC03E048TRSMADJUSTABLE INDUCTOR 48NH SMD-Surface Mount349 - ImmediateView Details
ADJUSTABLE INDUCTOR 60NH SMDJLC04E065TRSMADJUSTABLE INDUCTOR 60NH SMD-Surface Mount139 - ImmediateView Details
ADJUSTABLE INDUCTOR 74NH SMDJLC05E088TRSMADJUSTABLE INDUCTOR 74NH SMD-Surface Mount104 - ImmediateView Details
ADJUSTABLE INDUCTOR 74NH SMDJLC05E088TRVSMADJUSTABLE INDUCTOR 74NH SMD-Surface Mount285 - ImmediateView Details
ADJUSTABLE INDUCTOR 88NH SMDJLC06E110TRSMADJUSTABLE INDUCTOR 88NH SMD-Surface Mount268 - ImmediateView Details
Published: 2018-09-27