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
2.5 A
Nominal
Power - Triode ·Triode-Triode
7802WB
High-transconductance dual power triode widely used as a series-pass element in regulated power supplies; multiple sections may be paralleled to obtain greater controlled output current.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- -
- Socket code
- IO
- Base pins
- 8
- Nominal heater
- 6.3 V / 2.5 A
Description
The 7802WB is widely used as a “passing” tube or series regulator tube in controlled power supplies because of its high transconductance at relatively low plate voltages. To provide the desired output current, many triode sections can be paralleled. If tube sections are to be paralleled however, the designer is strongly urged to use sufficient resistance in each cathode leg to equalize current division among the triode sections. Recommended values for various operating currents are shown on the plate characteristics curve. If the output current of the supply is not fixed, use the resistance indicated for the lowest current that approaches the
Socket description
International Octal
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- IO
- Base pins
- 8
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 2.5 A
- 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
2 physical sections, each with unique specifications.
Section 1
Triode
X-ray radiationInterelectrode capacitances
- Transconductance
- 0.02 S
- Amplification factor
- 8.5
- Max plate voltage
- 250 V
- Max plate dissipation
- 15 W
- Max cathode current
- 160 mA
Section 2
Triode
X-ray radiationInterelectrode capacitances
- Transconductance
- 0.02 S
- Amplification factor
- 8.5
- Max plate voltage
- 250 V
- Max plate dissipation
- 15 W
- Max cathode current
- 160 mA
Second identical 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.