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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12BE6  -  SYLVANIA Heptode Pentagrid 7-Pin Vintage Miniature Vacuum Tube NOS

12BE6 - SYLVANIA Heptode Pentagrid 7-Pin Vintage Miniature Vacuum Tube NOS

SYLVANIA 12BE6   Heptode Pentagrid The SYLVANIA 12BE6  is a miniature heptode pri..

$7.50

12BR7 - GE  High Mu Triode Duo Diode 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

12BR7 - GE High Mu Triode Duo Diode 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

GE 12BR7  Triode Duo Diode The GE 12BR7  is a 9-pin miniature high mu triode duo diod..

$7.50

12BY7A  -  Browning Laboratories miniature power pentode 9-Pin Vintage Miniature Vacuum Tube NOS

12BY7A - Browning Laboratories miniature power pentode 9-Pin Vintage Miniature Vacuum Tube NOS

Browning  12BY7A  Power Pentode The Browning 12BY7AManufactured for and used extensive..

$29.00

12BY7A  -  Browning Laboratories miniature power pentode 9-Pin Vintage Vacuum Tube PRE-OWNED

12BY7A - Browning Laboratories miniature power pentode 9-Pin Vintage Vacuum Tube PRE-OWNED

Browning  12BY7A  Power Pentode The Browning 12BY7AManufactured for and used extensive..

$19.00

12BY7A  -  General Electric miniature power pentode 9-Pin Vintage Vacuum Tube PRE-OWNED

12BY7A - General Electric miniature power pentode 9-Pin Vintage Vacuum Tube PRE-OWNED

GE  12BY7A  Power Pentode Pre-Owned The General Electric 12BY7Ais a 9 pin miniature po..

$4.50

12BZ6 - RCA Semi-Remote-Cutoff Pentode 7-Pin Vintage Miniature Vacuum Tube NOS w/Box

12BZ6 - RCA Semi-Remote-Cutoff Pentode 7-Pin Vintage Miniature Vacuum Tube NOS w/Box

RCA 12BZ6  Triode Pentode The RCA 12BZ6  is a 7-pin triode-pentode miniature The 12BZ..

$19.00

12JB6 - SYLVANIA Beam Powered Pentode 9-Pin Vintage Novar Vacuum Tube NOS w/Box

12JB6 - SYLVANIA Beam Powered Pentode 9-Pin Vintage Novar Vacuum Tube NOS w/Box

SYLVANIA 12JB6 Beam Powered Pentode The SYLVANIA 12JB6  is a 9-pin Novar type Beam Powered..

$49.00

13DE7 - SYLVANIA Double Triode 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

13DE7 - SYLVANIA Double Triode 9-Pin Vintage Miniature Vacuum Tube NOS w/Box

SYLVANIA 13DE7   Double Triode The SYLVANIA 13DE7  is a 9-pin miniature double t..

$9.00

25Z6GT  -  KEN-RAD Rectifier-Doublier 8-Pin Octal Vintage Dual Diode Vacuum Tube PRE-OWNED

25Z6GT - KEN-RAD Rectifier-Doublier 8-Pin Octal Vintage Dual Diode Vacuum Tube PRE-OWNED

25Z6GT  Rectifier-Doublier  Pre-Owned The KEN-RAD 25Z6GTis a 8-pin Octal base tube use..

$4.50

2E26 - RCA Beam Powered Pentode 8-Pin Octal Vintage Transmit Vacuum Tube Pre-Owned

2E26 - RCA Beam Powered Pentode 8-Pin Octal Vintage Transmit Vacuum Tube Pre-Owned

GE 2E26  Beam Powered Pentode The GE 2E26  is a Glass-octal heater-cathode type used ..

$7.50

35W4  - SYLVANIA Half-Wave Rectifier 7-Pin Vintage Miniature Vacuum Tube NOS w/Box

35W4 - SYLVANIA Half-Wave Rectifier 7-Pin Vintage Miniature Vacuum Tube NOS w/Box

SYLVANIA 35W4  Half-Wave Rectifier The SYLVANIA 35W4  is a Half-Wave Vacuum Rectifie..

$7.50

5651 - SYLVANIA 86 Volt Gas Filled Glow Discharge Diode 7-Pin Vintage Vacuum Tube NOS

5651 - SYLVANIA 86 Volt Gas Filled Glow Discharge Diode 7-Pin Vintage Vacuum Tube NOS

SYLVANIA 5651A  Gas Filled 86V Diode The SYLVANIA 5651  is a 7-pin miniature cold cat..

$7.50

5651A - RCA 86 Volt Gas Filled Glow Discharge Diode 7-Pin Vintage Vacuum Tube NOS

5651A - RCA 86 Volt Gas Filled Glow Discharge Diode 7-Pin Vintage Vacuum Tube NOS

RCA 5651A  Gas Filled 86V Diode The RCA 5651A  is a 7-pin miniature cold cathode, gas..

$7.50

5651A - Westinghouse 86 Volt Gas Filled Glow Discharge Diode 7-Pin Vintage Vacuum Tube NOS w/Box

5651A - Westinghouse 86 Volt Gas Filled Glow Discharge Diode 7-Pin Vintage Vacuum Tube NOS w/Box

Westinghouse 5651A  Gas Filled 86V Diode The Westinghouse 5651A  is a 7-pin miniature..

$7.50

6146A - RCA Beam Powered Pentode 8-Pin Octal Vintage Transmit Vacuum Tube

6146A - RCA Beam Powered Pentode 8-Pin Octal Vintage Transmit Vacuum Tube

RCA 6146A  Beam Powered Pentode The RCA 6146A  is a 8-pin Octal type Beam Power Trans..

$19.00

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