Y540

High-voltage planar triode for series-regulator, switch, radar, and nanosecond pulse service, with 150-watt plate dissipation.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 1.3 A

Description

The EIMAC Y540 is a high-voltage planar triode for switch, series-regulator, radar, and nanosecond pulse service.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: -
Nominal heater voltage: 6.3 V
Nominal heater current: 1.3 A
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

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

Triode

X-ray radiationInterelectrode capacitances

Transconductance: 0.03 S
Amplification factor: 145
Max plate voltage: 10000 V
Max plate dissipation: 150 W
Max grid dissipation: 1.5 W
Max cathode current: 150 mA

Promoted from printed planar-triode general characteristics and pulsed/CW maximum ratings.

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

1962 Eimac

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Amplification factor
145
Transconductance
30000 uS

Other

Maximum plate voltage
10000 V
Maximum plate dissipation
100 W
Maximum grid dissipation
1.5 W
Maximum pulse cathode current
7.5 A

Data set 02

1975 Eimac Tube Manual

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Heater voltage nominal
6.3 V
Heater current nominal
1.3 A
Transconductance
30000 uS
Amplification factor
145
Cut-off mu
110

Capacitance

Input/grid-cathode capacitance
9.5 pF
Output/plate-cathode capacitance
0.06 pF
Grid-plate/feedback capacitance
1 pF

Other

Maximum plate voltage
12000 V
Maximum plate dissipation
150 W
Maximum grid dissipation
1.5 W
Maximum cathode or pulse plate current
7.5 A
Maximum rated frequency
3 GHz
DC plate voltage
10000 V
PulseModulator
Peak plate voltage
12000 V
PulseModulator
Pulse cathode current
7.5 A
DC plate current
150 mA
DC grid current
45 mA
Conduction/convection plate dissipation
10 W
Forced-air plate dissipation
150 W
Pulse duration
6 us
Duty factor
0.0033

Data set 03

1976 Eimac Tube Manual

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Heater voltage nominal
6.3 V
Heater current nominal
1.3 A
Transconductance
30000 uS
Amplification factor
145
Cut-off mu
110

Capacitance

Input/grid-cathode capacitance
9.5 pF
Output/plate-cathode capacitance
0.06 pF
Grid-plate/feedback capacitance
1 pF

Other

Maximum plate voltage
12000 V
Maximum plate dissipation
150 W
Maximum grid dissipation
1.5 W
Maximum cathode or pulse plate current
7.5 A
Maximum rated frequency
3 GHz
DC plate voltage
10000 V
PulseModulator
Peak plate voltage
12000 V
PulseModulator
Pulse cathode current
7.5 A
DC plate current
150 mA
DC grid current
45 mA
Conduction/convection plate dissipation
10 W
Forced-air plate dissipation
150 W
Pulse duration
6 us
Duty factor
0.0033