5876A

Coaxial pencil-type UHF power triode for RF amplification and oscillation. Its low-inductance construction supports full Class A and Class C ratings to roughly 1.7 GHz and operation at high altitude.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B7G
Base pins: 7
Nominal heater: 6.3 V / 135 mA

Description

Coaxial metal-glass pencil-type medium-mu UHF power triode for RF amplification, oscillation and power service through the microwave-region frequencies specified by the datasheet.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B7G
Base pins: 7
Nominal heater voltage: 6.3 V
Nominal heater current: 135 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

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 8615 Ω
Transconductance: 0.0065 S
Amplification factor: 56
Max plate voltage: 360 V
Max plate dissipation: 6.25 W
Max cathode current: 25 mA

Representative electrical section from supplied RCA data sheet.

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 01

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Triode

Capacitance

Grid To Plate
1.4 pF
Grid To Cathode
2.4 pF
Plate To Cathode
0.035 pF

Other

FrequencyForFullRatings
1700 MHz
Useful Power Output
3 W
500MHz;CathodeDrive

Data set 02

1966 Tung Sol Electronic Tubes 3 of 4

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Heater voltage
6.3 V
Heater current
135 mA
Maximum full-rating frequency
1700 MHz
ClassA RF
Maximum full-rating frequency
1700 MHz
ClassC RF
Maximum altitude at full ratings
60000 ft
Minimum preheat time
60 s
Maximum plate voltage
360 V
Maximum plate dissipation
6.25 W
Maximum cathode current
25 mA

Characteristic

Static plate voltage
250 V
Static cathode resistor
75 ohm
Static plate current
18 mA

Capacitance

Grid-to-plate capacitance
1.4 pF

Data set 03

1971 RCA HB3 Binder 6 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Heater/filament voltage nominal
6.3 V
WholeTube
Heater/filament current
135 mA
WholeTube
Voltage (AC or DC)
6.3 %
Published source row
Voltage (AC or DC) (value 2)
10 %
Published source row
Current at
6.3 V
Published source row
Current at (value 2)
0 V
Published source row
Current at (value 3)
135 V
Published source row
Amplification Factor
56
Published source row
DC PLATE VOLTAGE
300 V
Published source row
~ DC GRID VOLTAGE
-100 V
Published source row
DC PLATE CURRENT
25 mA
Published source row
PLATE DISSIPATION°
6 W
Published source row
PLATE DISSIPATION° (value 2)
25 W
Published source row
Grid-Circuit Resistance
0 Mohm
Published source row
Grid-Circuit Resistance (value 2)
5 Mohm
Published source row
DC PLATE VOLTAGE
360 V
Published source row
DC GRID VOLTAGE
-100 V
Published source row
DC PLATE CURRENT
25 mA
Published source row
DC GRID CURRENT
8 mA
Published source row
PLATE INPUT
9 W
Published source row
PLATE DISSIPATION°
6.25 W
Published source row
At frequency o} goo i~oo g0
0
Published source row
DC Plate-to-Grid Voltage
262 V
Published source row
DC Plate-to-Grid Voltage (value 2)
252 V
Published source row
DC Plate-to-Grid Voltage (value 3)
252 V
Published source row
DC Cathode-torrid Voltage9
12 V
Published source row
DC Cathode-torrid Voltage9 (value 2)
2 V
Published source row
DC Cathode-torrid Voltage9 (value 3)
2 V
Published source row
DC Plate Current
23 mA
Published source row
DC Plate Current (value 2)
23 mA
Published source row
DC Plate Current (value 3)
25 mA
Published source row
DC Grid Current (Approx.)
6 mA
Published source row
DC Grid Current (Approx.) (value 2)
4 mA
Published source row
Useful Power Output (Approx.)
3 W
Published source row
Useful Power Output (Approx.) (value 2)
0.75 W
Published source row
Useful Power Output (Approx.) (value 3)
0.1 W
Published source row
DC Plate-to-Grid Voltage
326 V
Published source row
DC Cathode-to-Grid Voltage9
51 V
Published source row
DC Plate Current
23 mA
Published source row
DC Grid Current (Approx.)
7 mA
Published source row
Driver Power Output (Approx.)
2 W
Published source row
Useful Power Output (Approx.)
5 W
Published source row
Grid-Circuit Resistance
0 Mohm
Published source row
Grid-Circuit Resistance (value 2)
1 Mohm
Published source row
DC PLATE VOLTAGE
275 V
Published source row
DC GRID VOLTAGE
-100 V
Published source row
/'~~ DC PLATE CURRENT
22 mA
Published source row
DC GRID CURRENT
8 mA
Published source row
PLATE INPUT
6 W
Published source row
PLATE DISSIPATION°
4.25 W
Published source row
Grid-Circuit Resistance
0 Mohm
Published source row
Grid-Circuit Resistance (value 2)
1 Mohm
Published source row
DC PLATE VOLTAGE
330 V
Published source row
DC GRID VOLTAGE
-100 V
Published source row
DC PLATE CURRENT
22 mA
Published source row
DC GRID CURRENT
8 mA
Published source row
PLATE INPUT
7 W
Published source row
PLATE INPUT (value 2)
5 W
Published source row
PLATE DISSIPATION
6.25 W
Published source row
~~ DC Plate-torrid Voltage
390 V
Published source row
~~ DC Plate-torrid Voltage (value 2)
370 V
Published source row
DC Cathode-to-Grid Voltage9
90 V
Published source row
DC Cathode-to-Grid Voltage9 (value 2)
70 V
Published source row
DC Plate Current
18 mA
Published source row
DC Plate Current (value 2)
17.3 mA
Published source row
DC Grid Current (Approx.)
6 mA
Published source row
DC Grid Current (Approx.) (value 2)
7 mA
Published source row
Driver Power Output (Approx.)
2.1 W
Published source row
Driver Power Output (Approx.) (value 2)
2 W
Published source row
Useful Power Output (Approx.)
2.1 W
Published source row
Useful Power Output (Approx.) (value 2)
2 W
Published source row
Grid-Circuat Resistance
0 Mohm
Published source row
Grid-Circuat Resistance (value 2)
1 Mohm
Published source row
Grid-Circuat Resistance (value 3)
0.1 Mohm
Published source row
the audio —frequency envelope does not exceetl
115
Published source row

Characteristic

Socket for Heater Pins. Grayhill No
22
Published source row
Socket for Heater Pins. Grayhill No (value 2)
-36
Published source row
Socket for Heater Pins. Grayhill No (value 3)
54
Published source row
Socket for Heater Pins. Grayhill No (value 4)
6325
Published source row
Heater Current
1 A
Published source row
Heater Current (value 2)
127 mA
Published source row
Heater Current (value 3)
143 mA
Published source row