The HF is a single capacitor employing the APC rotor and stator design. An extra long sleeve bearing and positive contact nickel-plated phosphor bronze wiper make this unit ideally suited to high frequency applications. The HF capacitors may be mounted by the 5/16 threaded bushing or the mounting bracket in grounded rotor applications. In isolated rotor applications, the HF capacitors may be mounted with spacers and screws through the two 1/8″ diameter holes in the steatite panel. Spacers and screws are not supplied.
The HF capacitors have a nominal air gap of 0.015″. The wide spaced HF-X capacitors have a nominal air gap of 0.045″. Capacitance values and dimensions are shown in the table.
The HFA capacitors are similar to the HF series in that larger rotor and stator plates are used. This provides means to secure the same maximum capacitance values with larger air gaps. Mounting is by the 3/8-32 threaded bushing, by base mounting brackets (supplied), or by spacers and screws (not supplied) through the three 1/8″ diameter holes in the steatite panel. Capacitance values, dimensions and air gaps for the HF series are shown in the HFA table.