1404-C
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The General Radio 1404-C Reference Standard Capacitor were introduced in Catalog T (1968) and remained available through Catalog 1978.
The Type 1404-C capacitor is designed as primary reference standards of capacitance with which working standards can be compared. The capacitor plates are constructed of Invar and assembled in a sealed container with dry nitrogen under pressure slightly above atmospheric. This type of construction is less affected by external atmospheric conditions making increased stability. Each capacitor is shipped with a calibration certificate with specifications for that particular instrument.
Specifications
- Capacitance: 10 pF
- Stability: 20 parts per million per year
- Temperature Coefficient of Capacitance: 2 ±2 ppm/°C from -20°C to +65°C.
- Dissipation Factor: less than .00005 at 1 kHz
- Maximum Voltage: 750 volts
- Terminals: two locking GR874 coaxial connectors
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