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Sealed Sapphire Trimmer Capacitors(Sapphire Trimmers)
  Friday, December 23, 2005
  Friday, April 7, 2017

Product Ref No: 42
Order No/Series: n/a

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Sealed Sapphire Trimmer Capacitors(Sapphire Trimmers)

Voltronics "P" line of sapphire subminiature trimmer capacitors is a unique design.

The trimmers have high Q, zero temperature coefficient, and are internally O-ring sealed to keep out flux and cleaning fluid. Yet, sizes are the same as the MIL unsealed styles.

The tuning screw does not move in and out, and RF current does not run along it.

Sapphire is ideal for precision trimmer capacitors. Its dielectric constant does not change with frequency, and its loss constant is extremely stable, measuring below 0.0003 up to 10 GHz. Sapphire is chemically inert, totally moisture resistant, and mechanically strong.

  • High Q, low temperature coefficient, and internal seal
  • Low self-inductance for use to 10 GHz
  • Interchangeability with unsealed designs
  • Long life, no measurable tuning noise
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