9MN8

High-mu triple triode for matrix-amplifier applications in color television receivers.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 3
Base: 12HU
Socket code: B12C
Base pins: 12
Nominal heater: 9.5 V / 600 mA

Description

High-mu triple triode for matrix-amplifier applications in color television receivers.

Socket description

Duodecar 12-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 12HU
Socket code: B12C
Base pins: 12
Nominal heater voltage: 9.5 V
Nominal heater current: 600 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

12HU - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

3 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 10000 Ω
Transconductance: 0.004 S
Amplification factor: 40
Max plate voltage: 330 V

Representative row for three identical triodes. Uploaded sheet is reference/equivalence-only: identical to 6MN8 except heater characteristics/ratings; promoted electrical values intentionally not inferred.

Section 2

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 10000 Ω
Transconductance: 0.004 S
Amplification factor: 40
Max plate voltage: 330 V

Physical triode restored from RCA triple-triode data.

Section 3

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 10000 Ω
Transconductance: 0.004 S
Amplification factor: 40
Max plate voltage: 330 V

Physical triode restored from RCA triple-triode data.

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

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Heater Voltage AC or DC#
95 V
GENERAL
Heater Cumment e e 0 6+
40 mA
GENERAL
Heater Warm-up Time average it
11 s
GENERAL
Heater voltage for a bogey tube at If
600 mA
GENERAL
The time required for the voltage across the heater to reach
80 %
GENERAL

Data set 02

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

O.'J
600 mA
Other
Published value
11 s
Other
Peak value
200 V
Other;PublishedValue1
Peak value
200 V
Other;PublishedValue2
Average value
100 V
Other;PublishedValue1
Average value
100 V
Other;PublishedValue2
Plate Voltage
330 V
MaximumRating
Grid Voltage, Positive-bias valu
0 V
MaximumRating
Maximum Plate Voltage
330 V
Section1

Capacitance

Grid to Plate
2.6 pF
Capacitance;PublishedValue1
Grid to Plate
2.6 pF
Capacitance;PublishedValue2
Grid to Plate
2.6 pF
Capacitance;PublishedValue3
Grid to Cathode and Heater
4.6 pF
Capacitance;PublishedValue1
Grid to Cathode and Heater
4.6 pF
Capacitance;PublishedValue2
Grid to Cathode and Heater
4.6 pF
Capacitance;PublishedValue3
Plate to Cathode and Heater
0.33 pF
Capacitance;PublishedValue1
Plate to Cathode and Heater
0.57 pF
Capacitance;PublishedValue2
Plate to Cathode and Heater
0.65 pF
Capacitance;PublishedValue3

Characteristic

Plate Voltage
125 V
Characteristic;PublishedValue1
Plate Voltage
200 V
Characteristic;PublishedValue2
Grid Voltage .
-1 V
Characteristic;PublishedValue1
Grid Voltage .
-4 V
Characteristic;PublishedValue2
Plate Resistance (Approx.)
6250 ohm
Characteristic;PublishedValue1
Plate Resistance (Approx.)
10000 ohm
Characteristic;PublishedValue2
Plate Current
11 mA
Characteristic;PublishedValue1
Plate Current
4.8 mA
Characteristic;PublishedValue2
Grid Voltage (Approx.) for plate current f
50 V
Characteristic;PublishedValue1
Grid Voltage (Approx.) for plate current f
-11 V
Characteristic;PublishedValue2
Plate Resistance
10000 ohm
Section1
Transconductance
4000 uS
Section1
Amplification Factor
40
Section1