トップ - 自分用メモ - ソ連製SMT管
This was translated by me who doesn't understand Russian at all and hasn't been formally educated in vacuum tubes using machine translation. There may be mistranslations.
1Ж24Б
High-Reliability Small Signal RF Pentode
- RF amplifier for battery powered equipment up to 60 MHz.
- Directly heated oxide cathode
- For use in any orientation
- Manufactured in miniature glass package
- Lifetime of at least 5000 hours
Interelectrode capacitances (with external shield)
| Input |
3.6 ± 0.4 |
pF |
| Output |
2.95 ± 0.45 |
pF |
| Transfer |
< 0.008 |
pF |
| Anode - Cathode |
< 0.025 |
pF |
Nominal electrical characteristics
| Filament voltage |
1.2 |
V |
| Filament current |
13 ± 2 |
mA |
| Anode voltage |
60 |
V |
| 2nd grid voltage |
45 |
V |
| 1st grid bias voltage |
0 |
V |
| Anode current |
0.95 ± 0.45 |
mA |
| 2nd grid current |
< 0.1 |
mA |
| Transconductance |
0.9 ± 0.3 |
mS |
| Transconductance @ Vf 0.95 V |
> 0.48 |
mS |
| Input impedance @ 60 MHz |
> 100 |
kΩ |
| Equivalent noise resistance @ 30MHz |
< 6 |
kΩ |
| Reverse current when 1st grid at -1 V and 0.5 MΩ resistance |
< 0.1 |
μA |
| Microphonic noise @ anode load 10kΩ, vibration 50 Hz 10 G |
< 50 |
mV RMS |
Maximum ratings
| Maximum filament voltage |
1.4 |
V |
| Minimum filament voltage |
0.95 |
V |
| Anode voltage |
120 |
V |
| 2nd grid voltage |
90 |
V |
| Anode dissipation |
0.12 |
W |
| Cathode current |
1.6 |
mA |
| 1st grid resistance |
2.2 |
MΩ |
| Cylinder temperature |
105 |
°C |