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Voltage - Triode (single high frequency) ·Triode

6HA5S

Electrically equivalent 6HA5-S miniature triode for RF amplification in VHF television tuners.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
7GM
Socket code
B7G
Base pins
7
Nominal heater
6.3 V / 180 mA

Description

Miniature type used as rf-amplifier tube in vhf tele- vision tuners. Outlines section, 5B; requires miniature 7-contact socket. Type 6HA5-S is electrically identical 7GM with type 6HM5/6HA5. For replacement use type 6HB6/6HA6.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
7GM
Socket code
B7G
Base pins
7
Nominal heater voltage
6.3 V
Nominal heater current
180 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

7GM - Terminal pinout

Electrical assignments shared by every tube using this base designation.

TerminalSectionConnectionEvidence
PIN1G1AG1 — Control Grid

EIA transcription; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 7GM

PIN2KAK — Cathode

EIA transcription; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 7GM

PIN3H—H — Heater

EIA transcription; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 7GM

PIN4H—H — Heater

EIA transcription; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 7GM

PIN5PAP — Plate (Anode)

EIA transcription; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 7GM

PIN6ISAIS — Internal Screen

EIA transcription; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 7GM

PIN7KAK — Cathode

EIA transcription; independent manufacturer confirmation pending

Unverified

EIA Base Connections, printed page 129, 7GM

Section ratings

1 physical section, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
4600 Ω
Transconductance
0.015 S
Amplification factor
72
Max plate voltage
220 V
Max plate dissipation
2.6 W
Max cathode current
22 mA

Electrical values completed from supplied 6HM5.pdf because the supplied 6HA5S.pdf explicitly states 6HA5-S is electrically identical with 6HM5/6HA5.

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

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Peak Heater-Cathode Voltage ±

    110 volts

    Peak Heater-Cathode Voltage ±110 max ±110 max ±110 max ±110 max volts [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Grid to Plate

    0.36 PF

    Grid to Plate 0.36 PF [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Grid to Cathode, Heater, Internal Shield, and External Shield

    4.3 PF

    Grid to Cathode, Heater, Internal Shield, and External Shield 4.3 PF [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Cathode to Plate

    2.9 PF

    Cathode to Plate 2.9 PF [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Cathode to Heater, Grid, Internal Shield, and External Shield

    3.1 PF

    Cathode to Heater, Grid, Internal Shield, and External Shield 3.1 PF [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Heater to Cathode

    2.3 PF

    Heater to Cathode 2.3 PF [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Heater to Grid

    0.07 PF

    Heater to Grid 0.070 max PF [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Plate Dissipation

    2.6 watts

    Plate Dissipation 2.6 watts [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Heater Warm-up Time (Average)

    11 seconds

    Heater Warm-up Time (Average) .11 11 11 seconds [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Peak Heater-Cathode Voltage .... ±

    100 volts

    Peak Heater-Cathode Voltage .... ±100 max tlOO max ±100 max ±100 max volts [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Grid to Plate

    0.52 PF

    Grid to Plate 0.52 PF [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Grid to Cathode, Heater, and Internal Shield

    5 PF

    Grid to Cathode, Heater, and Internal Shield 5 PF [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Plate to Cathode, Heater, and Internal Shield

    3.5 PF

    Plate to Cathode, Heater, and Internal Shield 3.5 PF [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Heater to Cathode

    2.5 PF

    Heater to Cathode 2.5 PF [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Plate Dissipation

    2.5 watts

    Plate Dissipation 2.5 watts [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Grid No

    2

    Grid No.2 (Beam Plate) Connected to cathode at socket [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Plate Dissipation

    30 watts

    Plate Dissipation 30 watts [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

Characteristic

  • DC Plate Voltage

    220 volts

    DC Plate Voltage 220 volts [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • DC Plate Supply Voltage

    600 volts

    DC Plate Supply Voltage 600 volts [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Grid Voltage

    -50 volts

    Grid Voltage -50 volts [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Cathode Current

    22 mA

    Cathode Current 22 mA [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • DC Plate Supply Voltage

    135 volts

    DC Plate Supply Voltage 135 135 135 135 volts [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Internal-Shield Voltage

    0 volts

    Internal-Shield Voltage 0 0 0 0 volts [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • DC Grid Voltage

    -2.7 volts

    DC Grid Voltage -1 -2.7 volts [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Amplification Factor

    72

    Amplification Factor 72 80 72 [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Transconductance

    14500

    Transconductance 14500 1500 20000 14500 /imhos [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Plate Current

    11.5 mA

    Plate Current 11.5 19 11.5 mA [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • DC Grid Current

    10 MA

    DC Grid Current 10 MA [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Grid-No

    1

    Grid-No. 1 Voltage for one-per-cent [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • transconductance

    -8.1 volts

    transconductance -5.3 -8.1 volts [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Plate Voltage

    200 volts

    Plate Voltage 200 volts [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Grid Voltage, Negative-bias Value

    50 volts

    Grid Voltage, Negative-bias Value 50 volts [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Cathode Current

    22 mA

    Cathode Current 22 mA [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Plate Voltage

    135 volts

    Plate Voltage 135 volts [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Grid Voltage

    -1 volt

    Grid Voltage -1 volt [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Amplification Factor

    78

    Amplification Factor 78 [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Plate Resistance

    5400 ohms

    Plate Resistance 5400 ohms [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Transconductance

    15000

    Transconductance 15000 /imhos [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Plate Current

    11.5 mA

    Plate Current 11.5 mA [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Input Resistance**

    275 ohms

    Input Resistance** 275 ohms [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Grid Voltage (Approx.) for transconductance of

    -4.2 volts

    Grid Voltage (Approx.) for transconductance of 150 /imhos -4.2 volts [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Grid Voltage (Approx.) for transconductance of

    -2.5 volts

    Grid Voltage (Approx.) for transconductance of 1500 ftmhos -2.5 volts [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Grid-Circuit Resistance, for cathode-bias operation

    1 megohm

    Grid-Circuit Resistance, for cathode-bias operation 1 megohm [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Pulse Plate Voltage*

    3500 volts

    Pulse Plate Voltage* 3500 volts [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Grid- Voltage, Negative-bias value

    4.4

    Grid- Voltage, Negative-bias value 4.4 vo]ts [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Peak Plate Current

    300 mA

    Peak Plate Current 300 mA [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Amplification Factor

    300

    Amplification Factor 300 [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Transconductance

    65000

    Transconductance +200 65000 jumhos [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Plate Resistance (Approx.)

    4600 ohms

    Plate Resistance (Approx.) 4600 ohms [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Grid Voltage (Approx.) for plate current of

    -13 mA

    Grid Voltage (Approx.) for plate current of 1 mA -13 volts [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Peak Plate Voltage*

    5500 volts

    Peak Plate Voltage* 5500 volts [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Peak Plate Current

    325 mA

    Peak Plate Current 325 mA [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

  • Grid-Circuit Resistance*

    0.1 megohm

    Grid-Circuit Resistance* 0.1 megohm [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]

Capacitance

  • Input Capacitance**

    11.2 pF

    Input Capacitance** 11.2 pF [Cross-reference: 6HA5-S electrically identical with 6HM5/6HA5.]