12B4
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The 12B4(A) (P/N 154-044, 154-0044-00) is a power triode vacuum tube with a B9A (Noval) miniature 9-pin base. It has 5.5 W maximum plate dissipation, 1000 V peak plate voltage, and and 105 mA peak cathode current.
The 12B4 is used in the 126, 551, and 555, and as a pass tube in the power supply of the 513, 581/585, and 570.
The 12B4A (154-0044-00) is similar except for the controlled heater warm-up, suitable for use in conjunction with other 600 mA types.
Data
- General Electric 12B4A data sheet
- 12B4 / 12B4A @ radiomuseum.org
Pictures
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12B4 Tube
Used in
Some instruments using part 12B4
| Instrument | Manufacturer | Class | Model | Description | Introduced |
|---|---|---|---|---|---|
| 126 | Tektronix | Plug-in | 126 | Power Supply Module | 1952 |
| 310 | Tektronix | Oscilloscope | 310A | 4 MHz oscilloscope | 1955 |
| 310A | Tektronix | Oscilloscope | 310A | 4 MHz oscilloscope | 1959 |
| 316 | Tektronix | Oscilloscope | 316 | 10 MHz 3" tube scope | 1959 |
| 317 | Tektronix | Oscilloscope | 317 | 10 MHz 3" tube scope | 1959 |
| 502 | Tektronix | Oscilloscope | 502 | 1 MHz dual beam differential scope | 1958 |
| 502A | Tektronix | Oscilloscope | 502A | 1 MHz dual beam differential scope | 1963 |
| 513 | Tektronix | Oscilloscope | 513 | 18 MHz scope | 1950 |
| 524 | Tektronix | Oscilloscope | 524AD | TV waveform monitoring scope | 1953 |
| 526 | Tektronix | Audio/Video | 526 | NTSC Vectorscope | 1959 |
| 535 | Tektronix | Oscilloscope | 535 | 10 (15) MHz dual-timebase scope | 1954 |
| 541 | Tektronix | Oscilloscope | 541 | 30 MHz oscilloscope | 1955 |
| 545 | Tektronix | Oscilloscope | 545 | 30 (33) MHz oscilloscope | 1955 |
| 545A | Tektronix | Oscilloscope | 545A | 30 (33) MHz oscilloscope | 1959 |
| 546 | Tektronix | Oscilloscope | 546 | 50 MHz oscilloscope | 1964 |
| 547 | Tektronix | Oscilloscope | 547 | 50 MHz oscilloscope | 1964 |
| 549 | Tektronix | Oscilloscope | 549 | 30 MHz storage oscilloscope | 1965 |
| 551 | Tektronix | Oscilloscope | 551 | 27 MHz scope | 1958 |
| 555 | Tektronix | Oscilloscope | 555 | Dual beam 30 MHz scope | 1959 |
| 570 | Tektronix | Curve Tracer | 570 | Curve tracer for tubes | 1955 |
| 581 | Tektronix | Oscilloscope | 581 | 100 (95) MHz oscilloscope | 1959 |
| 581A | Tektronix | Oscilloscope | 581A | 85 MHz oscilloscope | 1963 |
| 585 | Tektronix | Oscilloscope | 585 | 100 (95) MHz oscilloscope | 1959 |
| 585A | Tektronix | Oscilloscope | 585 | 85 MHz oscilloscope | 1963 |
| Keithley 610 | Keithley | Multimeter | 610 | Electrometer | 1960 |