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.
1Ж29Б
High-Reliability Small Signal RF Pentode
- RF amplifier and oscillator 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 2000 hours
Interelectrode capacitances (with external shield)
| Input |
5 ± 0.6 |
pF |
| Output |
3 ± 0.4 |
pF |
| Transfer |
< 0.005 |
pF |
| Anode - Cathode |
< 0.028 |
pF |
Nominal electrical characteristics
| Filament voltage |
1.2 or 2.4 |
V |
| Anode voltage |
60 |
V |
| 2nd grid voltage |
45 |
V |
| Filament current |
62 or 30 |
mA |
| Anode current |
5.3 ± 1.7 |
mA |
| 2nd grid current |
< 0.5 |
mA |
| Transconductance |
2.5 ± 0.8 |
mS |
| Transconductance @ Vf 0.95 V |
> 1.2 |
mS |
| Equivalent noise resistance @ 30MHz |
< 7 |
kΩ |
| Input impedance @ 60 MHz |
> 55 |
kΩ |
| Reverse current when 1st grid at -1 V and 100 kΩ resistance |
< 0.5 |
μA |
| Microphonic noise @ anode load 10kΩ, vibration 50 Hz 10 G |
< 150 |
mV RMS |
Maximum ratings
| Maximum filament voltage |
1.4 or 2.8 |
V |
| Minimum filament voltage |
0.95 or 1.9 |
V |
| Anode voltage |
150 |
V |
| 2nd grid voltage |
120 |
V |
| Anode dissipation |
1.2 |
W |
| 2nd grid dissipation |
0.35 |
W |
| Cathode current |
8 |
mA |
| 1st grid resistance |
1 |
MΩ |
| 1st grid resistance |
105 |
°C |