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Buy 2 pieces, 4 pieces, 8 pieces = precision matching (matching group). No parameter drift. Regarding matching, all our tubes are matched in the factory production workshop. The match is accurate (not all tubes match). We have the conditions and advantages to match multiple pipes (four, eight, and ten) according to customer needs. The parameters of the two tubes are the same)
Filament heating:
UF: 2.5V
IF: 2.5A
Limit rating
Anode voltage: 300V
Anode dissipation power: 15W
Gate resistance
When self-biased: 0.5M ohm
When the bias is fixed: 0.05M ohm
Interelectrode capacitance
Input capacitance: 7.5PF
Output capacitance: 16.5PF
Trans-circuit capacitance: 5.5PF
Static parameters
Ua: 300V
-Ug:45V
Ia: 60mA
Gm: 5.25mA/V
ri: 0.8k ohms
u:4.2
Pout: 3.5W
high quality products. Exact match. One-year quality guarantee
Note: (After receiving the tube, please do not think it is a counterfeit or shoddy product).![](https://ae01.alicdn.com/kf/H5c9c0b0037c34b1db6eeb8d4145e96143.png)
![](https://ae01.alicdn.com/kf/Hd80ab301cf23426f87ec195424676b392.jpg)
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