Electronic tube and vacuum tube catalog

Base

4BU

Socket code

IO

Sections

1

Rectifier

75 mA

V Inverse

300 V

4 pins - IO - International Octal

Gas-filled half-wave rectifier with a starter anode for power supplies. It requires no conventional heater supply and is rated for approximately 300 V peak inverse voltage, 75 mA DC output, and 500 mA peak current.

Base

4BU

Socket code

IO

Sections

1

Rectifier

75 mA

V Inverse

300 V

4 pins - IO - International Octal

Gas-filled half-wave rectifier with a starter anode for electronic power supplies. It requires no conventional heater supply and is rated for approximately 300 V peak inverse voltage, 75 mA DC output, and 500 mA peak current.

Base

—

Socket code

—

Sections

2

V Drop

S1: 24 V · S2: 24 V

Cold-cathode gas-filled full-wave rectifier for DC power supplies, requiring no conventional heater or filament supply. Ionized-gas conduction gives a relatively low forward drop while two rectifier sections provide full-wave operation.

Base

4R

Socket code

IO

Sections

2

Ik max

S1: 75 mA

Rectifier

S1: 75 mA · S2: 75 mA

V Drop

S1: 24 V · S2: 24 V

V Inverse

S1: 1,000 V · S2: 1,000 V

4 pins - IO - International Octal

Gas-filled cold-cathode full-wave rectifier for power supplies without a heater or filament supply. Two rectifier sections provide full-wave operation with relatively low gas-discharge forward voltage.

Base

8XD

Socket code

IO

Sections

2

Rectifier

S1: 110 mA · S2: 110 mA

V Drop

S1: 24 V · S2: 24 V

V Inverse

S1: 880 V · S2: 880 V

8 pins - IO - International Octal

Gas-filled full-wave rectifier with an ionically heated cathode, intended particularly for vibrator-type power supplies. It requires no separate heater supply and provides substantial current from a compact dual-rectifier structure.

Base

4R

Socket code

IO

Sections

2

Ik max

S1: 75 mA

Rectifier

S1: 75 mA · S2: 75 mA

V Drop

S1: 24 V · S2: 24 V

V Inverse

S1: 1,000 V · S2: 1,000 V

4 pins - IO - International Octal

Gas-filled full-wave rectifier with an ionically heated common cathode, requiring no separate heater supply. Its dual rectifier sections provide full-wave power conversion with low gas-discharge forward voltage.

Base

—

Socket code

—

Sections

1

Heater

1.9 V / 2.8 A

Rectifier

100 mA

V Inverse

500 V

Directly heated Philips gas-filled industrial rectifier designed particularly for battery-charger service. Rated for approximately 500 V peak inverse voltage and 100 mA average output from an oxide-coated filament.

Base

Refer to variations

Socket code

IO

Sections

2

Rectifier

S1: 110 mA · S2: 110 mA

V Drop

S1: 24 V · S2: 24 V

V Inverse

S1: 880 V · S2: 880 V

8 pins - IO - International Octal

Gas-filled full-wave rectifier with an ionically heated cathode for vibrator-type power supplies. It operates without a separate heater supply and provides useful current with low gas-discharge forward voltage.

Base

—

Socket code

OCTAL5

Sections

2

Heater

1 V / 1.2 A

Rectifier

S1: 110 mA · S2: 110 mA

V Drop

S1: 24 V · S2: 24 V

V Inverse

S1: 1,200 V · S2: 1,200 V

5 pins - OCTAL5 - Small-wafer octal 5-contact base

Gas-filled full-wave rectifier for DC power-supply applications. Its two rectifier sections provide substantial current capability and relatively low forward voltage compared with conventional high-vacuum rectifiers.

Base

—

Socket code

J4

Sections

1

Heater

5 V / 6.5 A

Plate

60 W

Rectifier

100 mA

V Inverse

40,000 V

J4 - Jumbo 4-contact

Eimac high-vacuum half-wave rectifier for high-voltage power supplies. Rated for approximately 40 kV peak inverse voltage and 100 mA average plate current for industrial and transmitting applications.

Base

—

Socket code

—

Sections

1

Heater

1.9 V / 3.5 A

Rectifier

650 mA

V Drop

9 V

V Inverse

185 V

Directly heated Philips gas-filled industrial rectifier for charging lead-acid batteries. Rated for approximately 185 V peak inverse voltage, 650 mA average current, and 4 A peak current.

Base

—

Socket code

—

Sections

1

Heater

1.8 V / 1.8 A

Rectifier

200 mA

V Drop

15 V

Directly heated Philips gas-filled rectifier intended for charging applications. It provides approximately 200 mA average output capability with a characteristic valve voltage drop around 15 V.

Base

—

Socket code

—

Sections

1

Heater

20 V / 19 A

Plate

750 W

V Drop

400 V

V Inverse

75,000 V

Machlett high-vacuum industrial rectifier for high-power applications such as electrostatic precipitation. Rated for approximately 75 kV peak inverse voltage and 750 mA peak anode current from a rugged tungsten filament.

Base

—

Socket code

—

Sections

1

Heater

10 V / 11.5 A

V Inverse

125,000 V

Machlett high-vacuum industrial rectifier for converting relatively small AC currents at extremely high voltage to DC. Rated for approximately 125 kV peak inverse voltage for demanding industrial power supplies.

Base

—

Socket code

—

Sections

1

Heater

1.9 V / 11 A

Rectifier

3 A

V Drop

9 V

V Inverse

185 V

Directly heated Philips mercury-vapour or gas-filled industrial rectifier for battery charging. Rated for approximately 185 V peak inverse voltage, 3 A average current, and 18 A peak current.

Base

—

Socket code

—

Sections

1

Heater

1.9 V / 20 A

Rectifier

7.5 A

V Drop

9 V

V Inverse

185 V

Directly heated Philips mercury-vapour or gas-filled industrial rectifier for high-current battery charging. Rated for approximately 185 V peak inverse voltage, 7.5 A average current, and 45 A peak current.

Base

—

Socket code

—

Sections

1

Heater

1.9 V / 7 A

Rectifier

3 A

V Inverse

185 V

Directly heated Philips gas-filled industrial rectifier for battery-charger service. Rated for approximately 185 V peak inverse voltage, 3 A average output, and 18 A peak current from an oxide-coated filament.

Base

—

Socket code

—

Sections

1

Heater

1.9 V / 25.5 A

Rectifier

12.5 A

V Drop

9 V

V Inverse

185 V

Directly heated Philips mercury-vapour or gas-filled industrial rectifier for high-current battery charging. Rated for approximately 185 V peak inverse voltage, 12.5 A average current, and 75 A peak current.

Base

—

Socket code

—

Sections

1

Heater

1.9 V / 44 A

Rectifier

12.5 A

V Inverse

150 V

Directly heated Philips mercury-vapour or gas-filled industrial rectifier designed specifically for welding power supplies. Rated for approximately 150 V peak inverse voltage, 12.5 A average current, and 75 A peak current.

Base

—

Socket code

—

Sections

1

Heater

1.9 V / 68 A

Rectifier

20 A

V Drop

9 V

V Inverse

150 V

Directly heated Philips mercury-vapour or gas-filled industrial rectifier for welding power supplies. Rated for approximately 150 V peak inverse voltage, 20 A average current, and 120 A peak current.

Base

—

Socket code

—

Sections

1

Heater

1.9 V / 40 A

Rectifier

20 A

V Inverse

185 V

Directly heated Philips mercury-vapour or gas-filled industrial rectifier for heavy-duty battery charging. Rated for approximately 185 V peak inverse voltage, 20 A average current, and 120 A peak current.

Base

—

Socket code

—

Sections

1

Heater

1.9 V / 7 A

Rectifier

2 A

V Inverse

700 V

Directly heated Philips mercury-vapour or gas-filled rectifier for industrial power conversion. Rated for approximately 700 V peak inverse voltage, 2 A average current, and 12 A peak current.

Base

—

Socket code

—

Sections

1

Heater

3.25 V / 70 A

Rectifier

30 A

V Drop

10 V

V Inverse

170 V

Directly heated Philips mercury-vapour or gas-filled industrial rectifier for heavy-duty welding service. Rated for approximately 170 V peak inverse voltage, 30 A average current, and 200 A peak current.

Base

—

Socket code

—

Sections

1

Heater

13 V / 12.5 A

V Inverse

140,000 V

Machlett high-vacuum industrial rectifier for extremely high-voltage power supplies. Rated for approximately 140 kV peak inverse voltage and 200 mA peak anode current, emphasizing exceptional inverse-voltage capability.

Base

—

Socket code

—

Sections

1

Heater

1.9 V / 11 A

Rectifier

5 A

V Inverse

185 V

Directly heated Philips mercury-vapour or gas-filled industrial rectifier for battery-charger service. Rated for approximately 185 V peak inverse voltage, 5 A average output, and 30 A peak current.

Base

—

Socket code

—

Sections

1

Heater

1.9 V / 3.5 A

Rectifier

850 mA

V Drop

9 V

V Inverse

185 V

Directly heated Philips gas-filled industrial rectifier for charging lead-acid batteries. Rated for approximately 185 V peak inverse voltage, 850 mA average current, and 5 A peak current.

Base

—

Socket code

—

Sections

1

Heater

1.9 V / 5.5 A

Rectifier

1.5 A

V Drop

9 V

V Inverse

140 V

Directly heated Philips gas-filled industrial rectifier for charging batteries of up to about twelve lead-acid cells. Rated for approximately 140 V peak inverse voltage and 1.5 A nominal output.

Base

—

Socket code

—

Sections

1

Heater

1.9 V / 5.5 A

Rectifier

1.5 A

V Inverse

185 V

Directly heated Philips gas-filled industrial rectifier with oxide-coated filament for battery-charger service. Rated for approximately 185 V peak inverse voltage and 1.5 A nominal rectified output.

Base

GOLIATH

Socket code

—

Sections

1

Heater

2.5 V / 27 A

Rectifier

15 A

V Drop

10 V

V Inverse

275 V

Directly heated Philips mercury-vapour or gas-filled industrial rectifier for battery charging and cinema rectifier equipment. Rated for approximately 275 V peak inverse voltage and 15 A nominal output.

Base

—

Socket code

—

Sections

1

Heater

10 V / 11.5 A

V Inverse

125,000 V

Machlett directly heated high-vacuum industrial rectifier for very-high-voltage power supplies. Rated for approximately 125 kV peak inverse voltage for demanding industrial rectification and high-voltage electronic equipment.

Base

GOLIATH

Socket code

—

Sections

1

Heater

2.25 V / 17 A

Rectifier

6 A

V Drop

9 V

V Inverse

375 V

Directly heated Philips gas-filled industrial rectifier for charging batteries of up to about 36 lead-acid cells. Rated for approximately 375 V peak inverse voltage and 6 A nominal rectified output.

Base

GOLIATH

Socket code

—

Sections

1

Heater

2.5 V / 25 A

Rectifier

15 A

V Drop

10 V

V Inverse

225 V

Directly heated Philips mercury-vapour or gas-filled industrial rectifier for battery charging and cinema rectifier service. Rated for approximately 225 V peak inverse voltage and 15 A nominal output.

Base

SPECIAL 3P

Socket code

—

Sections

1

Heater

1.9 V / 13 A

Rectifier

4 A

V Drop

12 V

V Inverse

850 V

Directly heated Philips mercury-vapour or gas-filled industrial rectifier for large battery-charging installations up to about 110 lead-acid cells. Rated for approximately 850 V peak inverse voltage and 4 A output.

Base

SPECIAL 3P

Socket code

—

Sections

1

Heater

1.9 V / 18 A

Rectifier

6 A

V Drop

12 V

V Inverse

850 V

Directly heated Philips mercury-vapour or gas-filled industrial rectifier for large battery-charging installations up to about 110 lead-acid cells. Rated for approximately 850 V peak inverse voltage and 6 A output.

Base

SPECIAL

Socket code

—

Sections

1

Heater

1.9 V / 28 A

Rectifier

15 A

V Drop

12 V

V Inverse

850 V

Directly heated Philips mercury-vapour or gas-filled industrial rectifier for heavy battery-charging installations up to about 110 lead-acid cells. Rated for approximately 850 V peak inverse voltage and 15 A output.

Base

SPECIAL

Socket code

—

Sections

1

Heater

1.9 V / 45 A

Rectifier

25 A

V Drop

12 V

V Inverse

850 V

Directly heated Philips mercury-vapour or gas-filled industrial rectifier for very-high-current battery-charging installations up to about 110 lead-acid cells. Rated for approximately 850 V peak inverse voltage and 25 A output.

Base

4CB

Socket code

B7G

Sections

1

Heater

117 V / 40 mA

Rectifier

90 mA

V Drop

22.5 V

V Inverse

330 V

7 pins - B7G - Miniature 7-contact

Miniature cathode-type half-wave rectifier for three-way portable receivers. Its 117 V heater permits direct line-series operation while supplying modest DC current for portable receiver power supplies.

Base

—

Socket code

B7G

Sections

1

Heater

117 V / 40 mA

Rectifier

90 mA

V Drop

22.5 V

V Inverse

350 V

7 pins - B7G - Miniature 7-contact

Single-plate half-wave rectifier for line-operated electronic supplies. Its 117 V heater construction supports direct series operation from mains-powered equipment with modest DC output requirements.

Base

5AA

Socket code

IO

Sections

1

Heater

117 V / 40 mA

Rectifier

90 mA

V Drop

22.5 V

V Inverse

350 V

6 pins - IO - International Octal

Indirectly heated half-wave rectifier for three-way portable receiver supplies. Its 117 V heater is designed for line-series operation while providing modest rectified DC output.

Base

—

Socket code

—

Sections

2

Heater

117 V / 75 mA

Rectifier

S1: 60 mA · S2: 60 mA

V Drop

S1: 15.5 V · S2: 15.5 V

V Inverse

S1: 700 V · S2: 700 V

Base

1Q

Socket code

IO

Sections

2

Heater

117 V / 75 mA

Rectifier

S1: 60 mA · S2: 60 mA

V Drop

S1: 15.5 V · S2: 15.5 V

V Inverse

S1: 700 V · S2: 700 V

8 pins - IO - International Octal

High-vacuum dual rectifier for conventional full-wave and voltage-doubler power supplies. Its 117 V low-current heater makes it particularly useful in transformerless mains-operated equipment.

Base

—

Socket code

—

Sections

1

Heater

13 V / 12.5 A

V Inverse

140,000 V

Machlett directly heated high-vacuum industrial rectifier for extremely high-voltage supplies, providing approximately 140 kV peak inverse-voltage capability for demanding professional rectification.

Base

—

Socket code

—

Sections

1

Heater

10 V / 11.5 A

V Inverse

140,000 V

Machlett directly heated high-vacuum industrial rectifier for extremely high-voltage power supplies, with approximately 140 kV peak inverse-voltage capability for specialized industrial equipment.

Base

9CB

Socket code

Refer to variations

Sections

1

Heater

12.6 V / 600 mA

Plate

6 W

Rectifier

175 mA

V Drop

7 V

V Inverse

5,000 V

9 pins

Indirectly heated diode designed for television horizontal-deflection damper service, with high heater-cathode insulation, roughly 5 kV peak-inverse capability, and substantial pulse-current handling.

Base

12BE

Socket code

B12C

Sections

1

Heater

12.6 V / 600 mA

Plate

5.3 W

Rectifier

165 mA

V Drop

32 V

V Inverse

5,000 V

12 pins - B12C - Duodecar 12-contact

High-voltage television damper diode designed for horizontal-deflection circuits, with approximately 5 kV peak-inverse rating, high pulse current, and controlled heater warm-up.

Base

—

Socket code

IO

Sections

1

Heater

12.6 V / 600 mA

Rectifier

125 mA

V Inverse

4,000 V

IO - International Octal

Half-wave vacuum rectifier designed primarily as a television horizontal-deflection damping diode, providing high inverse-voltage capability for sweep-circuit energy recovery.

Base

4CG

Socket code

IO

Sections

1

Heater

12.6 V / 600 mA

Rectifier

125 mA

V Drop

32 V

V Inverse

4,400 V

8 pins - IO - International Octal

Television horizontal-deflection damping diode with controlled heater warm-up, a heater-voltage variant of the corresponding 6AX4 family.

Base

4CG

Socket code

—

Sections

1

Heater

12.6 V / 600 mA

Plate

5.3 W

Rectifier

165 mA

V Drop

32 V

V Inverse

5,000 V

8 pins

High-voltage television horizontal-deflection damper diode with approximately 5 kV peak-inverse capability, high pulse current, and controlled heater warm-up.

Base

9HP

Socket code

Refer to variations

Sections

1

Heater

12.6 V / 600 mA

9 pins

12.6-volt heater variant of the 6AY3 half-wave vacuum rectifier, explicitly intended for television horizontal-deflection damper service.

Base

9HP

Socket code

—

Sections

1

Heater

12.6 V / 600 mA

Rectifier

175 mA

V Drop

32 V

V Inverse

5,000 V

9 pins

Novar half-wave vacuum rectifier designed as a damper tube in television horizontal-deflection circuits, with controlled warm-up and high inverse-voltage capability.