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Voltage - Triple Triode ·Triode-Triode-Triode

7690

Medium-mu triple triode designed for high-reliability instrumentation service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
3
Base
E12-66 / 12BA
Socket code
B12C
Base pins
12
Nominal heater
6.3 V / 450 mA

Description

Medium-mu triple triode for high-reliability instrumentation service.

Socket description

Duodecar 12-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
E12-66 / 12BA
Socket code
B12C
Base pins
12
Nominal heater voltage
6.3 V
Nominal heater current
450 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

E12-66 / 12BA - 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
15000 Ω
Transconductance
0.004 S
Amplification factor
60
Max plate voltage
330 V
Max plate dissipation
2.8 W

Promoted from 250 V characteristic point; identical sections.

Section 2

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
15000 Ω
Transconductance
0.004 S
Amplification factor
60
Max plate voltage
330 V
Max plate dissipation
2.8 W

Physical triode section added to align rows with SectionCount.

Section 3

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
15000 Ω
Transconductance
0.004 S
Amplification factor
60
Max plate voltage
330 V
Max plate dissipation
2.8 W

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.

Data set 01

1960 CBS Hytron

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Plate voltage

    100 V

    ClassA

  • Plate resistance

    15000 Ohm

    ClassA;Va=100V

  • Transconductance

    4000 uS

    ClassA;Va=100V

  • Amplification factor

    60 ratio

    ClassA

  • Plate current

    3.7 mA

    ClassA;Va=100V

  • Plate voltage

    250 V

    ClassA

  • Plate current

    10 mA

    ClassA;Va=250V