Knowles Precision Devices makes Multilayer, High Reliability, Single Layer and Precision Variable Capacitors, EMI Filters and Thin Film Devices. The company was formed by combining Dielectric Laboratories, Johanson Manufacturing, Novacap, Syfer and Voltronics, each well-established specialty capacitor makers with a combined history of over 175 years, into a single organization.

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Select a brand below to view products from Knowles Precision Devices companies:

Dielectric Laboratories Products include:

  • Hi-Q, Low ESR RF/Microwave MLCCs and Broadband Blocks
  • Single Layer Capacitors
  • Bandpass, Lowpass RF Thin Film Filters
  • Gain Equializers
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Johanson Manufacturing Products include:

  • Trimmer/Variable Capacitors
  • Variable Inductors
  • Air Trimmers
  • Giga Trim – Sapphire Trimmers
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Novacap Products include:

  • MLCCs - High Voltage, High Temperature
  • Hi-Rel MLCCs
  • MLCCs - High Voltage, High Temperature
  • Hi-Rel MLCCs
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Syfer Products include:

  • MLCCs - Power Supplies, Lighting, Hi-Voltage, Hi-Q and Low ESR
  • StackiCap™
  • Hi-Rel MLCCs
  • Panel Mount and SMD EMI Filters
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Voltronics Products include:

  • Trimmer/Variable Capacitors
  • Non-Magnetic Trimmer Capacitors
  • Non-Magnetic SMT/Leaded MLCCs
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