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10LE8

Twin-pentode television tube used as a combined color demodulator and matrix amplifier in high-level color-demodulation systems.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: 9DP
Socket code: B9A
Base pins: 9
Nominal heater: 10 V / 450 mA

Description

Miniature type used as combined color demodulator and matrix amplifier in color television receivers utilizing high-level demodulation systems. Outlines section, 6G; requires miniature 9-contact socket. Types 10LE8 and 15LE8 are identical with type 6LE8 except 9QZ for heater ratings. 6LE8 10LE8 15LE8

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 9DP
Socket code: B9A
Base pins: 9
Nominal heater voltage: 10 V
Nominal heater current: 450 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

9DP - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN1D2	A	D2 — 2nd Dynode Original EIA label D2; manufacturer cross-check pending	Unverified EIA Base Connections, printed page 131, 9DP
PIN2D1	A	D1 — 1st Dynode Original EIA label D1; manufacturer cross-check pending	Unverified EIA Base Connections, printed page 131, 9DP
PIN3G3	A	G3 — Suppressor Grid Original EIA label G3; manufacturer cross-check pending	Unverified EIA Base Connections, printed page 131, 9DP
PIN4H	—	H — Heater Original EIA label H; manufacturer cross-check pending	Unverified EIA Base Connections, printed page 131, 9DP
PIN5G2	A	G2 — Screen GridGroup 9DP5 EIA source transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DP
PIN5IS	A	IS — Internal ScreenGroup 9DP5 EIA source transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DP
PIN5H	—	H — HeaterGroup 9DP5 Original EIA label H; manufacturer cross-check pending	Unverified EIA Base Connections, printed page 131, 9DP
PIN6G1	A	G1 — Control Grid EIA source transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DP
PIN7K	A	K — Cathode EIA source transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DP
PIN8P1	A	P — Plate (Anode) EIA source transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DP
PIN9P2	A	P — Plate (Anode) EIA source transcription; manufacturer confirmation pending	Unverified EIA Base Connections, printed page 131, 9DP

Section ratings

2 physical sections, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances

Plate resistance: 50000 Ω
Transconductance: 0.006 S
Max plate voltage: 300 V
Max screen voltage: 300 V
Max plate dissipation: 2.5 W

dual-control

Section 2

Pentode

X-ray radiationInterelectrode capacitances

Plate resistance: 50000 Ω
Transconductance: 0.006 S
Max plate voltage: 300 V
Max screen voltage: 300 V
Max plate dissipation: 2.5 W

dual-control; second physical pentode section added to align section 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

1971 RCA HB3 Binder 5 of 7

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Maximum Plate Voltage
300 V
Inherited from explicitly referenced 6-volt parent type
Maximum Screen Voltage
300 V
Inherited from explicitly referenced 6-volt parent type
Plate Dissipation
2.5 W
Inherited from explicitly referenced 6-volt parent type

Characteristics

Transconductance
6000 µS
Inherited from explicitly referenced 6-volt parent type

Data set 02

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristic

For grid-No
1.1 volts
Published value from supplied target entry
For grid-No
300 volts
Published value from supplied target entry
Grid-No
1
Published value from supplied target entry
# Pulse duration must not exceed
10
Published value from supplied target entry
Heater Voltage (ac/dc)
15 volts
Published value from supplied target entry
Heater Current
0.3 ampere
Published value from supplied target entry
Heater Warm-up Time (Average)
11 seconds
Published value from supplied target entry
Plate Voltage (Each Unit)
300 volts
Published value from supplied target entry
Grid-No
150 volts
Published value from supplied target entry
Plate Dissipation (Each Unit)
2 watts
Published value from supplied target entry
Grid-No
2 watts
Published value from supplied target entry
Plate Voltage
100 volts
Published value from supplied target entry
Grid-No
0 volts
Published value from supplied target entry
Grid-No
100 volts
Published value from supplied target entry
Grid-No.l (Control-Grid) Voltage, Negative-bias value
2.5 volts
Published value from supplied target entry
Transconductance (App
350
Published value from supplied target entry
Plate Resistance (Approx.)
50000 ohms
Published value from supplied target entry
Plate Current
7.6
Published value from supplied target entry
Grid-No
14.5
Published value from supplied target entry
Grid-No.l Voltage for plate current of
-7.2 volts
Published value from supplied target entry
Grid-No.l Voltage for plate current of
-6.3 volts
Published value from supplied target entry
Grid-No
-17.4 volts
Published value from supplied target entry
Grid-No
-16.5 volts
Published value from supplied target entry