The S19G6F is a special quality indirectly heated half wave rectifier with flying leads intended for high voltage power supplies. The design is optimised for long life under rugged service conditions.
The CV4042 on the reverse indicates equivalence with the commercial type.
The anode has side fins for extra heat radiation ability. The ceramic spacers are present for additional insulation. The mica discs are doubled and this greatly improves vibration resistance.
The thin glass tube envelope is 18 mm in diameter and, excluding the base wires, is 51 mm tall.
Reference: Data-sheet. Type S19G6F was first introduced in 1961. See also1961 adverts.
