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EY81

High-voltage damper diode for television horizontal-output circuits, rated around 5.6 kV peak inverse voltage and 150 mA average current for repetitive line-deflection recovery.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: Noval
Socket code: B9A
Base pins: 9
Nominal heater: 6.3 V / 810 mA

Description

Damper diode for television horizontal-output circuits, with a 5.6 kV peak-inverse-voltage rating.

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: Noval
Socket code: B9A
Base pins: 9
Nominal heater voltage: 6.3 V
Nominal heater current: 810 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

Noval - 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

Rectifier

X-ray radiationInterelectrode capacitances

Max plate voltage: 250 V
Max plate dissipation: 3.5 W
Max cathode current: 150 mA
Rectifier peak inverse voltage: 5600 V
Rectifier nominal output current: 150 mA
Rectifier peak forward current: 450 mA

Published ratings/characteristics promoted where clearly stated; repeated identical rectifier sections compressed to one section row.

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

1953 La Radiotechnique

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristics

Heater voltage
6.3 V
Published nominal value
Heater current
810 mA
Published nominal value

Capacitance

Anode capacitance
6.4 pF
Published
Cathode-heater capacitance
2.5 pF
Published

Data set 02

1953 RFT Rundfunk Technik

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

Inverse plate voltage maximum
4.5 kV
DC plate current maximum
150 mA
Peak plate current maximum
450 mA
Duty ratio maximum
1:5.5
Pulse duration maximum
18 µs

Data set 03

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

Peak inverse voltage maximum
5600 V
DamperDiode
Peak plate current maximum
450 mA
DamperDiode
Average plate current maximum
150 mA
DamperDiode
Application
Damper diode in horizontal output circuits of television receivers
Section1

Data set 04

1963 Philips Electron Tubes Handbook V1a

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Capacitance

Anode capacitance
6.4 pF
Cathode-to-heater capacitance
2.5 pF

Other

Maximum booster voltage
550 V
Maximum DC anode current
150 mA
Maximum peak anode current
450 mA
Maximum cathode-positive anode-cathode pulse voltage
5000 V
Pulse
Maximum heater-cathode pulse voltage
5000 V
Pulse

Data set 05

1972 Philips Receiving Tubes

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristics

Heater voltage
6.3 V
Published nominal value
Heater current
810 mA
Published nominal value

Data set 06

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristic

Published electrical datum
6.3 V
Heating : indirect; parallel supply Ve = 6,3 V
Published electrical datum
810 mA
Chauffage: indirect; alimentation paralléle Ip = 810 mA
Published electrical datum
6.4 pF
Capacitznces Ca = 6,4 pF
Published electrical datum
2.5 pF
Kapazitéiten Cuf = 2,5 pF
Published electrical datum
450 mA
Iap = max, 450 mA
Published electrical datum
5600 v
Vak, = mex. 5600 v%)?)
Published electrical datum
3800 v
Vaz, = maz., 3800 v%)6)
Published electrical datum
810 mA
Chauffage: indirect; alimentation paralléle Ir = 810 mA
Published electrical datum
6.4 pF
Capacitances Ca = 6,4 pF
Published electrical datum
-
) Maxé pulse duration 22 % of a cycle with a maXximum of
Published electrical datum
-
0 5 10 5 20 Va(V) 25

Other

Published electrical datum
4 µF
Chew at = max. 4 uF
Published electrical datum
600 V
Vit max. 600 V')
Published electrical datum
5000 V
Vai, = max., 5000 V?) [e—
Published electrical datum
3000 V
Vaz, = max. 3000 V%)
Published electrical datum
250 V
Vp = max. 250 V
Published electrical datum
3.5 W
Wa = max. 3,5 W
Published electrical datum
150 mA
Ia = max. 150 mA
Published electrical datum
450 mA
Iap = max. 450 mA
Published electrical datum
5000 V
Vakp = max. 5000 V ')2%)
Published electrical datum
5000 V
Verp = max. 5000 V ')
Published electrical datum
-
v entre filament et terre = max. 220
Published electrical datum
3.5 W
Wa = Mmax. 3,5 W
Published electrical datum
5000 v
Vakp = max. 5000 v 1)?)
Published electrical datum
5600 v
Vakp = max. 5600 v ')2)3)
Published electrical datum
5000 V
Vifp = max. 5000 V ')
Published electrical datum
-
v entre filament et terre = max. 220 Verr
Published electrical datum
-
2)Max. pulse duration 22% of a cycle with a meximum of
Published electrical datum
-
) Ma:;é pulse duration 22 % of a cycle with a maximum of
Heater voltage
6.3 V
Nominal heater rating
Heater current
810 mA
Nominal heater rating