Data set 01
1954 STC Brimar
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Other
Power output
5.5 W
ClassA
Power - Beam (NOT sweep) ·BeamPower
9BW6
Series-heater beam-power audio-output tube delivering roughly 4.5–5.5 W Class-A output, with a 9.45 V, 300 mA heater suited to receiver heater strings.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- 9AM
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 9.45 V / 300 mA
Description
The BRIMAR 9BW6 is a 9 V heater miniature output beam tetrode; its source refers to 6BW6.
Socket description
Small-button Noval 9-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 9AM
- Socket code
- B9A
- Base pins
- 9
- Nominal heater voltage
- 9.45 V
- Nominal heater current
- 300 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
9AM - Terminal pinout
Electrical assignments shared by every tube using this base designation.
| Terminal | Section | Connection | Evidence |
|---|---|---|---|
| PIN1Pin 1 | — | IC | Verified 6BW6 9AM manufacturer basing, GE/Brimar |
| PIN2Pin 2 | A | G1 — Control Grid | Verified 6BW6 9AM manufacturer basing, GE/Brimar |
| PIN3Pin 3 | A | K — Cathode | Verified 6BW6 9AM manufacturer basing, GE/Brimar |
| PIN4Pin 4 | — | H — Heater | Verified 6BW6 9AM manufacturer basing, GE/Brimar |
| PIN5Pin 5 | — | H — Heater | Verified 6BW6 9AM manufacturer basing, GE/Brimar |
| PIN6Pin 6 | — | NC | Verified 6BW6 9AM manufacturer basing, GE/Brimar |
| PIN7Pin 7 | A | P — Plate (Anode) | Verified 6BW6 9AM manufacturer basing, GE/Brimar |
| PIN8Pin 8 | A | G2 — Screen Grid | Verified 6BW6 9AM manufacturer basing, GE/Brimar |
| PIN9Pin 9 | A | G3 — Suppressor Grid | Verified 6BW6 9AM manufacturer basing, GE/Brimar |
Section ratings
1 physical section, each with unique specifications.
Section 1
Beam Power
X-ray radiationInterelectrode capacitances
- Plate resistance
- 52000 Ω
- Transconductance
- 0.00375 S
- Max plate voltage
- 315 V
- Max screen voltage
- 285 V
- Max plate dissipation
- 12 W
- Max screen dissipation
- 2 W
Published source values promoted where applicable.
Source-dependent data
Operating conditions by source
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 02
195X General Electric Essential Characteristics
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Other
Maximum plate voltage
315 V
Published handbook rating
Maximum screen voltage
285 V
Published handbook rating
Plate voltage
250 V
ClassA
Screen voltage
250 V
ClassA
Control-grid bias
12.5 V
ClassA
Plate current
45 mA
ClassA
Screen current
4.5 mA
ClassA
Load resistance
5000 ohm
ClassA
Power output
4.5 W
ClassA
Characteristic
Plate resistance
52000 ohm
Published handbook characteristic
Transconductance
4100 µS
Published handbook characteristic
Heater/filament voltage
9.45 V
Published heater/filament rating
Heater/filament current
300 mA
Published heater/filament rating