Data set 01
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Heater voltage
6.3 V
Nominal
Heater current
150 mA
Nominal
Voltage Pentode ·Pentode
8517
Subminiature pentode designed for Class C oscillator and frequency-multiplier service. Manufacturer documentation emphasizes long life and severe-environment operation, making RF generation and multiplication its defining function rather than linear amplification.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- SUBMINIATURE8
- Base pins
- 8
- Nominal heater
- 6.3 V / 150 mA
Description
Subminiature pentode for Class C oscillator and frequency-multiplier service with emphasis on long life and severe-environment operation.
Socket description
Subminiature 8-lead base
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- SUBMINIATURE8
- Base pins
- 8
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 150 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
Pentode
X-ray radiationInterelectrode capacitances
- Max plate voltage
- 135 V
- Max screen voltage
- 100 V
- Max plate dissipation
- 0.8 W
- Max screen dissipation
- 0.55 W
- Max cathode current
- 16 mA
Class C oscillator/frequency-multiplier pentode.
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 4 of 4
Published operating points and test conditions from this source.
SECTION 1
Pentode
Other
Maximum plate voltage
165 V
Maximum screen voltage
155 V
Maximum plate dissipation
0.8 W
Maximum screen dissipation
0.55 W
Maximum cathode current
16 mA
Maximum envelope temperature
220 degC
Maximum altitude
60000 ft
Plate voltage
100 V
AverageCharacteristics
Screen voltage
100 V
AverageCharacteristics
Cathode resistor
150 ohm
AverageCharacteristics
Plate current
6.1 mA
AverageCharacteristics
Screen current
4.2 mA
AverageCharacteristics
Maximum heater-cathode voltage
200 V
Characteristic
Peak plate current triode-connected
48 mA
ClassCOscillatorSimulation