12AX7
Sign in to saveAlso known as ECC83
12AX7 (also known as ECC83) is a miniature dual-triode vacuum tube with high voltage gain. Developed around 1946 by RCA engineers in Camden, New Jersey, under developmental number A-4522, it was released for public sale under the 12AX7 identifier on September 15, 1947.
Key facts
- Vacuum tube.image
- 12AX7 tube.jpg
- Vacuum tube.caption
- 12AX7
- Vacuum tube.classification
- Dual triode
- Vacuum tube.service
- Class-A amplifier
- Vacuum tube.height_in
- 2.2
- Vacuum tube.diameter_in
- 0.8
- Vacuum tube.cathode_type
- Indirectly heated
- Vacuum tube.heater_voltage
- 12.6 V (series)6.3 V (parallel)
- Vacuum tube.heater_current
- 150 mA (series)300 mA (parallel)
- Vacuum tube.max_dissipation
- 1 per section
- Vacuum tube.max_voltage
- 300 V
- Vacuum tube.pinout
- File:EIA-9A.png
- Vacuum tube.class_a_amplification_factor
- 100
- Vacuum tube.class_a_anode_voltage
- 250 V
- Vacuum tube.class_a_anode_current
- 1.2 mA
- Vacuum tube.class_a_bias_voltage
- −2 V
- Vacuum tube.class_a_anode_resistance
- 62.5 kΩ
- Vacuum tube.reference
- Sylvania 12AX7 datasheet
via Wikipedia infobox
Wikidata facts
- Image
- Electro-harmonix 12AX7EH.JPG
Show 2 more facts
- start time
- 1948-03-00
- Commons category
- 12AX7/ECC83
Sources (1)
via Wikidata · CC0
~6 min read
Article
8 sectionsContents
- History
- Application
- Similar twin-triode designs
- Manufacturers
- Gallery
- See also
- References
- External links
12AX7 (also known as ECC83) is a miniature dual-triode vacuum tube with high voltage gain. Developed around 1946 by RCA engineers in Camden, New Jersey, under developmental number A-4522, it was released for public sale under the 12AX7 identifier on September 15, 1947.
The 12AX7 was originally intended as replacement for the 6SL7 family of dual-triode amplifier tubes for audio applications. As a popular choice for guitar tube amplifiers, its ongoing use in such legacy equipment makes it one of the few small-signal vacuum tubes in continuous production since it was introduced.