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PY500

High-current series-heater booster diode for color-television horizontal time-base circuits, designed for demanding line-deflection recovery and high repetitive inverse voltage.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: B9D
Socket code: B9D
Base pins: 9
Nominal heater: 42 V / 300 mA

Description

Efficiency diode for color-television horizontal time-base circuits.

Socket description

Magnoval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: B9D
Socket code: B9D
Base pins: 9
Nominal heater voltage: 42 V
Nominal heater current: 300 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

B9D - 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 dissipation: 11 W
Rectifier peak inverse voltage: 5600 V
Rectifier nominal output current: 440 mA
Rectifier peak forward current: 800 mA
Rectifier max heater-cathode voltage: 6300 V

Published ratings and characteristics promoted where clearly stated; identical repeated sections compressed when applicable.

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

1959 Telefunken

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

Mean Plate Current
440 mA
Peak Plate Current
800 mA
Pulse
Peak Plate-Cathode Reverse Voltage
5600 V
Pulse
Peak Heater-Cathode Voltage
6300 V
Pulse

Data set 02

1967 Mullard Receiving and Amplifying Valves

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristic

Heater voltage
42 V
SeriesHeater
Heater current
300 mA
SeriesHeater
Anode current
440 mA
Forward resistance
42 ohm

Capacitance

Anode-cathode capacitance
13.5 pF
Heater-cathode capacitance
3.7 pF

Other

Maximum anode dissipation
11 W
Peak inverse voltage
5.6 kV
Pulse22Percent

Data set 03

1972 Philips Receiving Tubes

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristics

Heater voltage
42 V
Published nominal value
Heater current
300 mA
Published nominal value

Other

Maximum plate dissipation
11 W
Published maximum rating
Maximum peak heater-cathode voltage
6.3 kV
Heater negative
Absolute maximum peak inverse voltage
7 kV
Published absolute maximum

Data set 04

1973 Mazda Valves Binder 2

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristics

Heater voltage
42 V
Published nominal value
Heater current
300 mA
Published nominal value

Other

Maximum plate dissipation
11 W
Published maximum rating
Maximum peak heater-cathode voltage
6.3 kV
Heater negative

Data set 05

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

Heater current If
300 mA
Heater current If 300 mA
Anode to cathode Cak
13 pF
Anode to cathode Cak 13 pF
Cathode to heater Ckf
3.7 pF
Cathode to heater Ckf 3.7 pF
Internal resistance (I
440 mA
Internal resistance (I = 440 mA) R; 45.5 Q
Anode dissipation Wo max
11 w
Anode dissipation Wo max. 11 w
Anode current, average Iy max
440 mA
Anode current, average Iy max. 440 mA
Cathode to heater voltage, peak kap max
6300 v
Cathode to heater voltage, peak kap max. 6300 v 1