VACUUM TUBES

A vacuum tube consists of two or more electrodes in a vacuum inside an airtight envelope. Most tubes have glass envelopes with a glass-to-metal seal based on kovar sealable borosilicate glasses, though ceramic and metal envelopes (atop insulating bases) have been used. The electrodes are attached to leads which pass through the envelope via an airtight seal.
Most vacuum tubes have a limited lifetime, due to the filament or heater burning out or other failure modes, so they are made as replaceable units; the electrode leads connect to pins on the tube's base which plug into a tube socket. The tubes in this section are NOS (new old stock) from the 1980s and 1990s and are mostly brand new. Those that are used will be noted as such and have been tested as "GOOD" on a tube tester.
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$0.00
0A2 - GE Cold Cathode Gas-Filled 150V Regulator 7-Pin Vintage Miniature Vacuum Tube NOS w/Box
GE 0A2 Gas-Filled 150V Regulator The GE 0A2 is a 7 pin cold cathode, gas-filled dio..
$14.00
0A2 - RCA Cold Cathode Gas-Filled 150V Regulator 7-Pin Vintage Miniature Vacuum Tube NOS w/Box
RCA 0A2 Gas-Filled 150V Regulator The RCA 0A2 is a 7 pin cold cathode, gas-filled d..
$14.00
0B2 - SYLVANIA Cold Cathode Gas-Filled 108V Regulator 7-Pin Vintage Miniature Vacuum Tube NOS w/Box
SYLVANIA 0B2 Gas-Filled 108V Regulator The SYLVANIA 0B2 is a 7 pin cold cathode, ga..
$4.50
0B2 - Raytheon Cold Cathode Gas-Filled 108V Regulator 7-Pin Vintage Miniature Vacuum Tube NOS w/Box
Raytheon 0B2 Gas-Filled 108V Regulator The Raytheon 0B2 is a 7 pin cold cathode, ga..
$0.00
0C2 - RCA Cold Cathode Gas-Filled 75V Regulator 7-Pin Vintage Miniature Vacuum Tube NOS in Box
RCA 0C2 Gas-Filled 75V Regulator The RCA 0C2 is a 7 pin cold cathode, gas-filled diode of ..
$19.00
5U4GB - GE Full-Wave Twin Diode Rectifier 8-Pin (5 Used) Vintage Octal Vacuum Tube NOS w/Box 5AS4A
GE 5U4GB Full-Wave Rectifier The General Electric 5U4GB / 5AS4A is a filamentary tw..
$39.00
5U4GB - SYLVANIA Full-Wave Twin Diode Rectifier 8-Pin (5 Used) Vintage Octal Vacuum Tube NOS w/Box 5AS4A
SYLVANIA 5U4GB Full-Wave Rectifier The SYLVANIA 5U4GB / 5AS4A is a filamentary twin..
$39.00
6AB4 - RCA High-Mu Triode 7-Pin Vintage Miniature Vacuum Tube NOS w/Box
RCA 6AB4 High-Mu Triode The RCA 6AB4 is a 7-pin miniature High-Mu Triode used as ca..
$19.00
6AB4 - TUNG-SOL High-Mu Triode 7-Pin Vintage Miniature Vacuum Tube NOS w/Box
TUNG-SOL 6AB4 High-Mu Triode The TUNG-SOL 6AB4 is a 7-pin miniature High-Mu Triode ..
$19.00
6AC10 - GE Compactron High-Mu Triple Triode Duodecar 12-Pin Vintage Vacuum Tube NOS w/Box
GE 6AC10 Compactron Triple Triode The GE 6AC10 is a 12-pin compactron containing a ..
$39.00
6AF11 - GE Compactron Dual Triode Pentode 12-Pin Vintage Miniature Vacuum Tube NOS w/Box
GE 6AF11 Compactron Triode Pentode The GE 6AF11 is a 12-pin compactron contai..
$9.00
6AG5 - SYLVANIA Sharp Cutoff Pentode 7-Pin Vintage Miniature Vacuum Tube NOS
SYLVANIA 6AG5 Sharp Cutoff Pentode The SYLVANIA 6AG5 is a 7-pin miniature sharp-cut..
$4.50
6AH6 - RCA Sharp Cutoff Pentode 7-Pin Vintage Miniature Vacuum Tube NOS
RCA 6AH6 Sharp Cutoff Pentode The RCA 6AH6 is a 7-pin miniature sharp-cutoff pentod..
$7.50
6AK5 - SYLVANIA Sharp Cut Off RF Pentode 7-Pin Vintage Miniature Vacuum Tube NOS w/Box EF95
SYLVANIA 6AK5 RF Pentode The SYLVANIA 6AK5 / EF95 is a 7-pin miniature sharp cut of..
$19.00
6AL5 - GE Twin Diode High-Perveance 7-Pin Vintage Miniature Vacuum Tube NOS w/Box CK6663
GE 6AL5 Twin Diode The GE 6AL5 / CK6663 is a 7-pin miniature Twin Diode high-pervea..
$7.50
6AL5 - Raytheon Twin Diode High-Perveance 7-Pin Vintage Miniature Vacuum Tube NOS w/Box CK6663
Raytheon 6AL5 Twin Diode The Raytheon 6AL5 / CK6663 is a 7-pin miniature Twin Diode..
$9.00
6AS5 - GE Beam Power Pentode 7-Pin Vintage Miniature Vacuum Tube NOS w/Box
GE 6AS5 Beam Power Pentode The GE 6AS5 is a 7-pin miniature Beam Power Pentode Tube..
$9.00
6AS6 - GE Sharp Cut-Off Pentode 7-Pin Vintage Miniature Vacuum Tube NOS w/Box
GE 6AS6 Sharp Cut-Off Pentode The GE 6AS6 is a 7-pin miniature sharp-cut-off pentod..
$4.50
6AS11 - GE Compactron Dual Triode Sharp-Cutoff Pentode Duodecar 12-Pin Vintage Vacuum Tube NOS w/Box
GE 6AS11 Compactron Triode Pentode The GE 6AS11 is a 12-pin compactron contai..
$9.00