Diode - Sharp-Cutoff Pentode
The 1S5 vacuum tube is a miniature type used in
lightweight, compact, portable, battery-operated
receivers as a combined detector and AF voltage
amplifier. They require a miniature 7-contact socket and
may be mounted in any position.
Electrical Data:
Filament Voltage ..................... 1.4 DC V
Filament Current ....................... 0.05 A
Substitutes ............................. 1H2