Data set 01
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Heater voltage
12.6 V
Nominal
Heater current
450 mA
Nominal
Voltage - Dual Triode (similar) ·Triode-Triode
5687WA
Ruggedized high-perveance medium-mu twin triode intended for pulse, industrial, military airborne, and standby-trigger applications, with unusually high shock and acceleration ratings.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 12.6 V / 450 mA
Description
Ruggedized high-perveance medium-mu twin triode for pulse, industrial, military airborne, and standby-trigger applications.
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
- 9
- Nominal heater voltage
- 12.6 V
- Nominal heater current
- 450 mA
- Parallel heater voltage
- 6.3 V
- Parallel heater current
- 900 mA
- Series capable
- Yes
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
- 2000 Ω
- Transconductance
- 0.0085 S
- Amplification factor
- 17
- Max plate voltage
- 250 V
- Max plate dissipation
- 4.2 W
- Max cathode current
- 50 mA
Representative row for two ruggedized high-perveance triodes.
Section 2
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 2000 Ω
- Transconductance
- 0.0085 S
- Amplification factor
- 17
- Max plate voltage
- 250 V
- Max plate dissipation
- 4.2 W
- Max cathode current
- 50 mA
Second physical triode restored under current one-row-per-physical-section policy.
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
Triode
Other
Plate voltage
180 V
ClassA;EachSection
Grid voltage
-7 V
ClassA;EachSection
Plate current
23 mA
ClassA;EachSection
Maximum inverse plate voltage
1000 V
Pulse
Total plate dissipation both units
7.5 W
BothSections
Maximum shock
450 G
Ruggedized
Maximum uniform acceleration
1000 G
Ruggedized
Maximum vibrational acceleration
2.5 G
Ruggedized
Characteristic
Plate resistance
2000 ohm
ClassA;EachSection
Transconductance
8500 uS
ClassA;EachSection
Amplification factor
17
ClassA;EachSection
Capacitance
Grid-to-plate capacitance
4 pF
EachSection
Heater-to-cathode capacitance
7 pF
EachSection
Plate-to-plate capacitance
0.75 pF
BetweenSections