Data set 01
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Other
Peak Cathode Current
800 mA
HorizontalDeflection
Characteristic
Transconductance
9100 uS
Typical
Power - TV Horizontal Output (sweep) ·BeamPower
21HB5
Compactron beam pentode designed specifically for television horizontal-deflection amplifier service.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B9A
- Base pins
- 12
- Nominal heater
- 21 V / 450 mA
Description
Compactron beam pentode designed for television horizontal-deflection amplifier service.
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
- -
- Socket code
- B9A
- Base pins
- 12
- Nominal heater voltage
- 21 V
- Nominal heater current
- 450 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
Terminal pinout
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
Section ratings
1 physical section, each with unique specifications.
Section 1
Beam Power
X-ray radiationInterelectrode capacitances
- Plate resistance
- 18000 Ω
- Transconductance
- 0.0091 S
- Amplification factor
- 4.4
- Max plate voltage
- 770 V
- Max screen voltage
- 220 V
- Max plate dissipation
- 18 W
- Max screen dissipation
- 3.5 W
- Max cathode current
- 230 mA
- Rectifier max heater-cathode voltage
- 200 V
- Rectifier warm-up time
- 11 s
Published promoted fields populated by printed ratings/characteristics headings.
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
1966 Tung Sol Electronic Tubes 3 of 4
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Other
DC plate-supply voltage
550 V
HorizontalDeflection
Peak positive pulse plate voltage
6500 V
HorizontalDeflection
Peak negative pulse plate voltage
-1500 V
HorizontalDeflection
Maximum grid #2 voltage
175 V
HorizontalDeflection
Peak negative grid #1 voltage
-300 V
HorizontalDeflection
Average cathode current
110 mA
HorizontalDeflection
Peak cathode current
400 mA
HorizontalDeflection
Plate voltage
250 V
AverageCharacteristics
Grid #2 voltage
150 V
AverageCharacteristics
Plate current
65 mA
AverageCharacteristics
Grid #2 current
1.8 mA
AverageCharacteristics
Characteristic
Plate resistance
18000 ohm
AverageCharacteristics
Transconductance
7300 uS
AverageCharacteristics
Triode amplification factor
4.3
TriodeConnection
Capacitance
Grid #1-to-plate capacitance
0.4 pF
Input capacitance
16 pF
Output capacitance
7 pF