scope:

This specification covers the general requirements for fixed or variable, vacuum or gas dielectric capacitors which are intended for use in high voltage applications in military equipment and are rated for use over the temperature range of −55°C to +85°C, −55°C to +100°C, −55°C to +125°C, or 0°Cto+85°C, as applicable (see 3.1).

The type designation shall be in the following form, and as specified (see 3.1 and 6.2):

The style is identified by the two letter symbol "CG" followed by a two digit number; the letters identify vacuum or gas dielectric, fixed or variable capacitors; the number identifies general shape of the case. Each style designation may include a family of case sizes.

The voltage rating, expressed in kilovolts (kV), is identified by a single letter in accordance with table I. The kilovolt rating is the peak value of voltage at 60 Hz unless otherwise specified (see 3.1). * TABLE I. Peak rated voltage.

Symbol Voltage Symbol Voltage Symbol Voltage Symbol Voltage ------------------------------------------------------------------------------------- kV kV kV kV B - - - 2 G - - - 10 N - - - 30 T - - - 55 C - - - 3 H - - - 12.5 P - - - 35 U - - - 40 E - - - 5 J - - - 15 R - - - 45 V - - - 6 F - - - 7.5 L - - - 20

The nominal capacitance of fixed capacitors expressed in picofarads (pF) has a tolerance of ±10 percent and is identified by a three-digit number; the first two digits represent significant figures and the last digit specifies the number of zeros to follow.

The capacitance range expressed in picofarads is identified by two three-digit numbers separated by a dash. The first number identifies the low end of the capacitance range which may be less than, or equal to, the value indicated. The second number identifies the upper end of the capacitance range which may be greater than, or equal to, the value indicated. Both numbers are in accordance with 1.2.1.3.1.

The maximum current, expressed in amperes, for which a unit is rated, is identified by a single letter in accordance with table II. The current rating is given as a root mean square (rms) value of a sinusoidal waveform and rated at 16 MHz unless otherwise specified (see 3.1). TABLE II. Current rating.

Symbol Current Symbol Current ----------------------------------------- Amperes Amperes A - - 10 M - - 60 C - - 20 N - - 75 E - - 30 P - - 100 G - - 40 Q - - 125 H - - 42 R - - 45 K - - 50 S - - 150