1401

The General Radio 1401 Series Standard Air Capacitors was introduced in Catalog M (1951) and remained available through Catalog S (1965).

The Type 1401 series are two terminal air capacitors designed as laboratory reference or working capacitance standards. They features all aluminum construction with shielded covers. Connections are Type 274 plugs spaced ¾ inches on center. This spacing matches the Type 716-C making them useful as balancing capacitors when performing substitution measurements. The Type 1401 series is comprised of four capacitor types 1401-A, 1401-B, 1401-C, and 1401-D.

Specifications

• Stability: Capacitance change is less than 0.05% per year
• Residual Impedances: The series inductance of all units is approximately 0.05 μH
• Temperature Coefficient of Capacitance: Typically 10 to 20 ppm/C° between 20° and 70°C.
• Terminals: Type 274 plugs, spaced ¾ inch on centers, to plug into Type 938 binding posts

Links

Type 1401 Series of Standard Air Capacitors

Type	Insertion Capacitance	Initial Accuracy	Peak Volts	Dissipation Factor	Catalog Number
1401-A	100 pF	0.2%	1500 V	0.0001	1401-9701
1401-B	200 pF	0.15%	1200 V	0.00005	1401-9702
1401-C	500 pF	0.12%	900 V	0.00002	1401-9703
1401-D	1000 pF	0.1%	700 V	0.00001	1401-9704

Photos

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• File:GR 1401-D Front.jpg