Data set 01
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Pentode
Application
Primary application
Video amplifier
Voltage Triode Pentode ·Pentode-Triode
8AL9
Compactron high-mu triode and sharp-cutoff pentode; the triode is general-purpose and the pentode serves as a video amplifier.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- 12HE
- Socket code
- B12C
- Base pins
- 12
- Nominal heater
- 8.6 V / 600 mA
Description
Compactron high-mu triode and sharp-cutoff pentode; triode is general-purpose and pentode is a video amplifier.
Socket description
Duodecar 12-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 12HE
- Socket code
- B12C
- Base pins
- 12
- Nominal heater voltage
- 8.6 V
- Nominal heater current
- 600 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
12HE - Terminal pinout
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
Section ratings
2 physical sections, each with unique specifications.
Section 1
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 40000 Ω
- Transconductance
- 0.03 S
- Max plate voltage
- 330 V
- Max screen voltage
- 200 V
- Max plate dissipation
- 1.5 W
- Max screen dissipation
- 1.5 W
Pentode section.
Section 2
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 9200 Ω
- Transconductance
- 0.0063 S
- Amplification factor
- 59
Triode section.
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
1968 General Electric Co
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
HeaterOrFilamentVoltageNominal
8.6 V
HeaterOrFilamentCurrentNominal
600 mA
Characteristic
PentodePlateResistance
40000 Ohm
Section1
PentodeTransconductance
30000 uS
Section1
SECTION 2
Triode
Characteristic
TriodeAmplificationFactor
59
Section2
TriodePlateResistance
9200 Ohm
Section2
TriodeTransconductance
6300 uS
Section2