Type HG capacitors are excellent radio frequency current and pulse forming network capacitors. Geometric design factors are such that a minimum of inductance is assured.
Case is heavy wall glass pillar prepared with fused silver bands. A non-magnetic metal ferrule is soldered on each end of the glass tube, producing a vacuum tight assembly.
Vibration. All units three inches or less in length will pass the MIL-C-25D vibration test supported on one end. Units seven inches or less in length must be supported on both ends. Units longer than seven inches may or may not pass the 10G vibration test.
Impregnant. Type HG units are silicon fluid filled and impregnated.