Miniature heater-cathode type twin diode designed for full-wave rectifier operation in compact power supplies. MFR: RCA SKU: 6X4 New old stock * No longer available for export. NOTE: Picture for reference only. Brand may vary.
Designed for use as a detector and intermediate-frequency or audio-frequency amplifier. MFR: RCA, Tung-Sol SKU: 6SF7 New old stock * No longer available for export.
Designed for service as a diode detector, AVC rectifier, and as a high gain resistance coupled amplifier in AC and DC operated receivers. MFR: Sylvania, CBS, RCA, GE SKU: 6Q7 New old stock * No longer available for export.
Designed for service as a high gain audio-frequency amplifier and is especially useful in resistance-coupled amplifier circuits in AC or DC operated equipment.
New old stock * No longer available for export. MFR: GE, Tung-Sol, Ken-Rad, RCA, Sylvania, Westinghouse SKU: 6SF5
Designed to be used as the vertical deflections amplifier in TV receivers. MFR: GE, RCA, Sylvania SKU: 6S4A New old stock * No longer available for export.
Designed for use as a high-gain radio-frequency or intermediate-frequency amplifier. MFR: RCA, GE, Sylvania, National Union SKU: 6SH7 New old stock * No longer available for export.
