Data set 01
1953 La Radiotechnique
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Characteristic
Perveance
2.6 mA/V^1.5
Other
FilterCapacitorMaximum
50 uF
Rectifier - Half Wave ·Rectifier
UY42
Single-plate half-wave rectifier for series-heater power supplies. Its 31 V heater and moderate current capability suit transformerless electronic equipment.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B8A
- Base pins
- 8
- Nominal heater
- 31 V / 100 mA
Description
Single-plate half-wave rectifier for series-heater power supplies.
Socket description
Rimlock 8-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B8A
- Base pins
- 8
- Nominal heater voltage
- 31 V
- Nominal heater current
- 100 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
Rectifier
X-ray radiationInterelectrode capacitances
- Rectifier peak inverse voltage
- 700 V
- Rectifier nominal output current
- 100 mA
- Rectifier peak forward current
- 600 mA
- Rectifier max heater-cathode voltage
- 550 V
Single-anode half-wave vacuum rectifier.
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 02
1957 Philips Receiving and Amplifying Tubes
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Characteristic
Heater Voltage
31 V
Heater Current
100 mA
Data set 03
1963 Philips Electron Tubes Handbook V1
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Other
Maximum peak inverse voltage
700 V
HalfWave
Maximum DC output current
100 mA
HalfWave
Maximum peak cathode/anode current
600 mA
HalfWave
Maximum heater-cathode voltage
550 V
CathodePositive
Maximum filter capacitance
50 uF
CapacitorInputFilter
AC input voltage
110 V RMS
HalfWave
Minimum series resistance
0 ohm
HalfWave; ACInput=110V
DC output voltage
113 V
HalfWave; ACInput=110V
AC input voltage
127 V RMS
HalfWave
Minimum series resistance
0 ohm
HalfWave; ACInput=127V
DC output voltage
135 V
HalfWave; ACInput=127V
AC input voltage
220 V RMS
HalfWave
Minimum series resistance
160 ohm
HalfWave; ACInput=220V
DC output voltage
188 V
HalfWave; ACInput=220V
AC input voltage
250 V RMS
HalfWave
Minimum series resistance
210 ohm
HalfWave; ACInput=250V
DC output voltage
205 V
HalfWave; ACInput=250V
Data set 04
1968 Mazda Belvu
Published operating points and test conditions from this source.
SECTION 1
Rectifier
Other
AC Input Voltage
250 V
HalfWave
Application
Application
PowerSupplyRectifier text