详细参数请点击查看PDF文件：TJ FullMusic PX25/n.pdf  (4.62 M)

传统的PX25灯丝电压都是4V，这里的PX25/n灯丝有4V、5V两种，5V灯丝方便DIY制作且可与其他管子互换。您选购的时候请注明，默认发货是4V灯丝规格的。

Classification-Dome-type bulb of glass, a white ceramic base with four-prong bayonet gold pins, oxide coated filamentary, mesh plate triode.
Application-Audio frequency amplifier where power outputs of approximately 10 watts or less is required at relatively low plate voltages.
Dimensions-Dimensions, outline diagrams of the tube and bases, and the arrangement of electrode connections to the base terminals are shown in Figures 1,2.

Nominal operating conditions and parameters
Filament voltage............................4.0 V  or  5.0 V
Nominal filament current.............2 A  or 1.6 A
Plate voltage..................................400 V
Grid voltage....................................–30V
Plate current..................................62.5 mA
Impedance***...............................1265 ohm
Amplification factor***..................9.5
Mutual Conductance***...............7.5 mA/V
Grid current....................................0.05μA

*Alternating-current filament supply or Direct-current filament supply.
**Alternating-current filament supply is used. The grid and plate returns should be connected to a center tap on the secondary of the filament transformer.
***Direct-current filament supply is used. The grid and plate returns areconnected to the negative end of the filament.
*Measured at Va=100;Vg=0 

Characteristics-Average characteristics

Figure 3.shown typical curves of plate currents as a function of grid voltage for several values of plate voltages. It is alternating-current filament supply.

Fig.3

Limiting Operation Conditions for Safe Operation-nor simultaneous ratings
Maximum plate voltage ......................500 V
Maximum plate dissipation ...............30 W