Data set 01
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Heater voltage
6.3 V
Nominal
Heater current
450 mA
Nominal
Voltage - Dual Triode (similar) ·Triode-Triode
7892
High-reliability subminiature twin triode designed for pulse and control applications, with compact construction and electrical characteristics suited to fast transient service.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 6.3 V / 450 mA
Description
The 7892 is a medium mu, high perveyance, twin triode intended only for pulse amplifier and oscillator service. Each triode section is electrically independent, although the two heaters have a common connection permitting either 6.3 Volt or 12.6 Volt heatexr operation. MECHANICAI, DATA Cathode Coated Unipotential Outline drawing JEDEC 6~-2
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
- 6.3 V
- Nominal heater current
- 450 mA
- Parallel heater voltage
- 6.3 V
- Parallel heater current
- 450 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
- Max plate voltage
- 330 V
- Max plate dissipation
- 4.2 W
- Max grid dissipation
- 1 W
Tung-Sol 7892 pulse-only dual triode: maximum plate dissipation 4.2 W per plate, with 7.5 W maximum combined dissipation; maximum grid dissipation 1.0 W per grid. 330 V is pulse plate-cathode voltage amplitude, not an unrestricted DC rating. Series heater voltage/current remain held pending verification.
Section 2
Triode
X-ray radiationInterelectrode capacitances
- Max plate voltage
- 330 V
- Max plate dissipation
- 4.2 W
- Max grid dissipation
- 1 W
Tung-Sol 7892 pulse-only dual triode: maximum plate dissipation 4.2 W per plate, with 7.5 W maximum combined dissipation; maximum grid dissipation 1.0 W per grid. 330 V is pulse plate-cathode voltage amplitude, not an unrestricted DC rating. Series heater voltage/current remain held pending verification.
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.