Data set 01
1961 Ferranti Technical Handbook
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristics
Heater Voltage
7 V
Heater Current
300 mA
Maximum Intended Frequency
220 MHz
CascodeRFAmplifier
Voltage - Dual Triode (similar high frequency) ·Triode-Triode
PCC89
Variable-mu frame-grid double triode designed for gain-controlled cascode VHF television amplification to approximately 220 MHz.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- B9A
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 7.5 V / 300 mA
Description
DualTriode; electrical ratings and operating data extracted from the supplied Mullard datasheet.
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
- B9A
- Socket code
- B9A
- Base pins
- 9
- Nominal heater voltage
- 7.5 V
- Nominal heater current
- 300 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
B9A - 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
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 2900 Ω
- Transconductance
- 0.0123 S
- Amplification factor
- 36
- Max plate voltage
- 130 V
- Max plate dissipation
- 1.8 W
- Max cathode current
- 18 mA
Representative data apply to each triode section; identical-section compression used.
Section 2
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 2900 Ω
- Transconductance
- 0.0123 S
- Amplification factor
- 36
- Max plate voltage
- 130 V
- Max plate dissipation
- 1.8 W
- Max cathode current
- 18 mA
Second physical triode section; added to align rows with SectionCount.
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
1963 Mullard
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristic
HeaterOrFilamentVoltage
7.5 V
HeaterOrFilamentCurrent
300 mA
Plate Voltage
90 V
Plate Current
15 mA
Grid Voltage
-1.2 V
Transconductance
12.3 mA/V
Plate Resistance
2.9 kohm
Amplification Factor
36
MaximumOperatingFrequency
220 MHz
Data set 03
1967 Mullard Receiving and Amplifying Valves
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristic
Plate voltage
90 V
EachSection
Plate current
15 mA
EachSection
Grid voltage
-1.2 V
EachSection
Transconductance
12300 uS
EachSection
Plate resistance
2.9 kOhm
EachSection
Amplification factor
36
EachSection
Capacitance
Plate-grid capacitance
1.9 pF
GroundedCathode
Grid input capacitance
3.8 pF
GroundedCathode
Plate output capacitance
2.5 pF
GroundedCathode
Other
Maximum plate voltage
130 V
EachSection
Maximum plate dissipation
1.8 W
EachSection
Maximum cathode current
18 mA
EachSection
Data set 04
1973 Mazda Valves Binder 2
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristics
Heater voltage
7.5 V
Published nominal value
Heater current
300 mA
Published nominal value
Transconductance
12300 µS
Published operating characteristic
Other
Maximum plate dissipation
1.8 W
Published maximum rating