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Specialized - Thyratron ·Thyratron

5557

Grid-controlled gas thyratron for industrial power control. Its trigger grid initiates gas-discharge conduction for controlled rectification and switching.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
B4
Base pins
4
Nominal heater
2.5 V / 5 A

Description

5557 is listed in the supplied Amperex material as a grid-controlled gas thyratron. Published ratings and operating characteristics were captured from the supplied table.

Socket description

European 4-pin base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B4
Base pins
4
Nominal heater voltage
2.5 V
Nominal heater current
5 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

Thyratron

X-ray radiationInterelectrode capacitances
Max plate voltage
2500 V
Max cathode current
500 mA

Thyratron section; published switching/rating data retained below.

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

1956 National Electronics Industrial Tubes

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Other

  • Maximum peak inverse voltage

    1250 V

    Published datasheet value

  • Maximum peak forward voltage

    1250 V

    Published datasheet value

  • Maximum DC output current

    1 A

    Published datasheet value

  • Maximum instantaneous output current

    3 A

    Published datasheet value

  • Maximum AC short-circuit current

    50 A

    Published datasheet value

Characteristics

  • Heating time

    5 s

    Published datasheet value

  • Typical arc drop

    15 V

    At stated peak current

  • Ionization time

    10 us

    Approximate

  • Deionization time

    1000 us

    Approximate

  • Anode-grid capacitance

    2 pF

    Published capacitance

Data set 02

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Characteristic

  • Filament voltage

    2.5 V

    ThyratronService

  • Filament current

    5 A

    ThyratronService

  • Filament heating time

    5 s

    ThyratronService

  • Tube voltage drop

    16 V

    ThyratronService

  • Deionization time

    10 us

    ThyratronService

Other

  • Maximum peak forward voltage

    2500 V

    ThyratronService

  • Maximum peak inverse voltage

    5000 V

    ThyratronService

  • Maximum peak anode current

    1 A

    ThyratronService

  • Maximum average anode current

    500 mA

    ThyratronService

  • Maximum grid voltage

    -500 V

    ThyratronService

Data set 03

1971 English Electric Valve

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Other

  • Peak forward anode voltage

    2.5 kV

  • Peak inverse anode voltage

    5 kV

  • Peak anode current

    2 A

  • Mean anode current

    500 mA

  • Filament preheating time

    10 s

Data set 04

1971 RCA HB3 Binder 2 of 7

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Characteristics

  • Voltage — published value 1

    2.38 V

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • Voltage — published value 2

    2.5 V

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • Voltage — published value 3

    2.62 V

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • Current at 2.5 volts — published value 1

    2.5 V

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • Current at 2.5 volts — published value 2

    5 V

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • Current at 2.5 volts — published value 3

    5.5 V

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • Ionization Time (Approx )

    10 s

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • Deionization Time (Approx )

    1000 s

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • Anode Voltage Drop (Approx.)

    16 V

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • ' Nitn filament volts ~ 2.38 and no neat—consery in9 enclosure

    2.38 V

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • For anode-suQply frequency of 6o cys

    6

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • Ep=2.3B VOLTS

    2.3 V

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • Ep=2.5 VOLTS AGt 5% — published value 1

    2.5 V

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • Ep=2.5 VOLTS AGt 5% — published value 2

    5 V

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • VOLTAGE 15 (+),

    15 V

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • GRID RESISTOR (OHMS)=1000

    1000 ohm

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • CONDENSED -MERCURY-TEMPERATURE RANGE=40 TO 80'C — published value 1

    40

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • CONDENSED -MERCURY-TEMPERATURE RANGE=40 TO 80'C — published value 2

    80

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • E{=2.5 VOLTS AC

    2.5 V

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • _GR D RESISTOR (OHMS) = O

    240 ohm

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • CONDENSED—MERGURY TEMPERATURE(`C)=40

    40

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • DC ANODE AMP.=0.25

    250 mA

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • Heater or filament voltage nominal

    2.5 V

    Nominal value from supplied datasheet.

  • Heater or filament current nominal

    5 A

    Nominal or average value from supplied datasheet.

Other

  • Forward — published value 1

    1250 V

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • Forward — published value 2

    2500 V

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • Forward — published value 3

    5000 V

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • Inverse — published value 1

    1250 V

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • Inverse — published value 2

    5000 V

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • Inverse — published value 3

    10000 V

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • tube conduction. -500 max. -500 max — published value 1

    -500 V

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • tube conduction. -500 max. -500 max — published value 2

    -500 V

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • tube conduction. -500 max. -500 max — published value 3

    -500 V

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • tube conduction — published value 1

    -10 V

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • tube conduction — published value 2

    -10 V

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • tube conduction — published value 3

    -10 V

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • Peak — published value 1

    3 mA

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • Peak — published value 2

    2 mA

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • Peak — published value 3

    1 mA

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • Average# — published value 1

    1 mA

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • Average# — published value 2

    0.5 mA

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • Average# — published value 3

    0.25 mA

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • maximum — published value 1

    40 mA

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • maximum — published value 2

    40 mA

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • maximum — published value 3

    40 mA

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • positive — published value 1

    0.05 mA

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • positive — published value 2

    0.05 mA

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

  • positive — published value 3

    0.05 mA

    Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.