BD4
The BD-4, Tek part number 152-0070-00, is a 0.1 mA Germanium back diode. It is used in the HF-sync circuit of the 7S14.
- |General Electric BD1 to BD7 Datasheet (PDF)
- Tunnel diode switching circuits and the back diode. Service Scope No. 38, June 1966 and No. 39, August 1966