Data set 01
1956 Western Electric Tubes
Published operating points and test conditions from this source.
SECTION 1
Diode
Characteristic
HeaterOrFilamentVoltage
4.5 V
HeaterOrFilamentCurrent
500 mA
Diode (NOT rectifier) ·Diode
704A
Western Electric special-purpose heater-cathode diode with a 1500-volt peak-inverse rating for specialized rectification service.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- 3
- Nominal heater
- 4.5 V / 500 mA
Description
Heater-cathode special-purpose diode with 1500 V peak inverse rating.
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- -
- Base pins
- 3
- Nominal heater voltage
- 4.5 V
- Nominal heater current
- 500 mA
- 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
Diode
X-ray radiationInterelectrode capacitances
- Rectifier peak inverse voltage
- 1500 V
- Rectifier nominal output current
- 10 mA
- Rectifier peak forward current
- 50 mA
Published ratings and characteristics promoted from the supplied Western Electric source.
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.