Data set 01
1960 Mazda
Published operating points and test conditions from this source.
SECTION 1
Triode
Capacitance
Anode-cathode capacitance
0.6 pF
Grid-cathode capacitance
1 pF
Anode-grid capacitance
1.4 pF
Voltage - Triode (single) ·Triode
A40
Mazda acorn triode for detector or oscillator service at ultra-short wavelengths down to approximately 0.5 metre.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- ACORN5
- Base pins
- 5
- Nominal heater
- 4 V / 250 mA
Description
Mazda A40 is an acorn triode whose small electrode dimensions, short leads and compact bulb permit ordinary circuits to operate at wavelengths down to about 0.5 metre. The triode is intended for detector or oscillator service.
Socket description
Acorn 5-pin
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- ACORN5
- Base pins
- 5
- Nominal heater voltage
- 4 V
- Nominal heater current
- 250 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
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 2650 Ω
- Transconductance
- 0.00375 S
- Amplification factor
- 25
- Max plate voltage
- 200 V
Acorn triode.
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.