VACUUM TUBES

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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 Please call for Assistance, Support or Special Pricing!  Main - 781 294-4992

Please call for Assistance, Support or Special Pricing! Main - 781 294-4992

Please call for assistance, support or special pricing. Pages for this product line are constantly b..

$0.00

0A2 - RCA Cold Cathode Gas-Filled 150V Regulator 7-Pin Vintage Miniature Vacuum Tube NOS w/Box

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

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

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..

$4.50

0C2  -  RCA Cold Cathode Gas-Filled 75V Regulator 7-Pin Vintage Miniature Vacuum Tube NOS in Box

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

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

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  - TUNG-SOL High-Mu Triode 7-Pin Vintage Miniature Vacuum Tube NOS w/Box

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

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

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

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

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

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

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

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

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